1efb80947Sahrens /* 2efb80947Sahrens * CDDL HEADER START 3efb80947Sahrens * 4efb80947Sahrens * The contents of this file are subject to the terms of the 5efb80947Sahrens * Common Development and Distribution License (the "License"). 6efb80947Sahrens * You may not use this file except in compliance with the License. 7efb80947Sahrens * 8efb80947Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9efb80947Sahrens * or http://www.opensolaris.org/os/licensing. 10efb80947Sahrens * See the License for the specific language governing permissions 11efb80947Sahrens * and limitations under the License. 12efb80947Sahrens * 13efb80947Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14efb80947Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15efb80947Sahrens * If applicable, add the following below this CDDL HEADER, with the 16efb80947Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17efb80947Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18efb80947Sahrens * 19efb80947Sahrens * CDDL HEADER END 20efb80947Sahrens */ 21efb80947Sahrens /* 22dc7cd546SMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23ec5cf9d5SAlexander Stetsenko * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24ca0cc391SMatthew Ahrens * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 25a2afb611SJerry Jelinek * Copyright (c) 2014, Joyent, Inc. All rights reserved. 26e77d42eaSMatthew Ahrens * Copyright 2014 HybridCluster. All rights reserved. 27880094b6SAndrew Stormont * Copyright 2016 RackTop Systems. 28*c3d26abcSMatthew Ahrens * Copyright (c) 2014 Integros [integros.com] 29ec5cf9d5SAlexander Stetsenko */ 30efb80947Sahrens 31efb80947Sahrens #include <sys/dmu.h> 32efb80947Sahrens #include <sys/dmu_impl.h> 33efb80947Sahrens #include <sys/dmu_tx.h> 34efb80947Sahrens #include <sys/dbuf.h> 35efb80947Sahrens #include <sys/dnode.h> 36efb80947Sahrens #include <sys/zfs_context.h> 37efb80947Sahrens #include <sys/dmu_objset.h> 38efb80947Sahrens #include <sys/dmu_traverse.h> 39efb80947Sahrens #include <sys/dsl_dataset.h> 40efb80947Sahrens #include <sys/dsl_dir.h> 4192241e0bSTom Erickson #include <sys/dsl_prop.h> 42efb80947Sahrens #include <sys/dsl_pool.h> 43efb80947Sahrens #include <sys/dsl_synctask.h> 44efb80947Sahrens #include <sys/zfs_ioctl.h> 45efb80947Sahrens #include <sys/zap.h> 46efb80947Sahrens #include <sys/zio_checksum.h> 47dc7cd546SMark Shellenbaum #include <sys/zfs_znode.h> 48cde58dbcSMatthew Ahrens #include <zfs_fletcher.h> 499e69d7d0SLori Alt #include <sys/avl.h> 508e714474SLori Alt #include <sys/ddt.h> 51c99e4bdcSChris Kirby #include <sys/zfs_onexit.h> 523b2aab18SMatthew Ahrens #include <sys/dmu_send.h> 533b2aab18SMatthew Ahrens #include <sys/dsl_destroy.h> 545d7b4d43SMatthew Ahrens #include <sys/blkptr.h> 5578f17100SMatthew Ahrens #include <sys/dsl_bookmark.h> 565d7b4d43SMatthew Ahrens #include <sys/zfeature.h> 57a2cdcdd2SPaul Dagnelie #include <sys/bqueue.h> 58efb80947Sahrens 5919b94df9SMatthew Ahrens /* Set this tunable to TRUE to replace corrupt data with 0x2f5baddb10c */ 6019b94df9SMatthew Ahrens int zfs_send_corrupt_data = B_FALSE; 61a2cdcdd2SPaul Dagnelie int zfs_send_queue_length = 16 * 1024 * 1024; 62a2cdcdd2SPaul Dagnelie int zfs_recv_queue_length = 16 * 1024 * 1024; 63880094b6SAndrew Stormont /* Set this tunable to FALSE to disable setting of DRR_FLAG_FREERECORDS */ 64880094b6SAndrew Stormont int zfs_send_set_freerecords_bit = B_TRUE; 6519b94df9SMatthew Ahrens 663cb34c60Sahrens static char *dmu_recv_tag = "dmu_recv_tag"; 679c3fd121SMatthew Ahrens const char *recv_clone_name = "%recv"; 683cb34c60Sahrens 69a2cdcdd2SPaul Dagnelie #define BP_SPAN(datablkszsec, indblkshift, level) \ 70a2cdcdd2SPaul Dagnelie (((uint64_t)datablkszsec) << (SPA_MINBLOCKSHIFT + \ 71a2cdcdd2SPaul Dagnelie (level) * (indblkshift - SPA_BLKPTRSHIFT))) 72a2cdcdd2SPaul Dagnelie 739c3fd121SMatthew Ahrens static void byteswap_record(dmu_replay_record_t *drr); 749c3fd121SMatthew Ahrens 75a2cdcdd2SPaul Dagnelie struct send_thread_arg { 76a2cdcdd2SPaul Dagnelie bqueue_t q; 77a2cdcdd2SPaul Dagnelie dsl_dataset_t *ds; /* Dataset to traverse */ 78a2cdcdd2SPaul Dagnelie uint64_t fromtxg; /* Traverse from this txg */ 79a2cdcdd2SPaul Dagnelie int flags; /* flags to pass to traverse_dataset */ 80a2cdcdd2SPaul Dagnelie int error_code; 81a2cdcdd2SPaul Dagnelie boolean_t cancel; 829c3fd121SMatthew Ahrens zbookmark_phys_t resume; 83a2cdcdd2SPaul Dagnelie }; 84a2cdcdd2SPaul Dagnelie 85a2cdcdd2SPaul Dagnelie struct send_block_record { 86a2cdcdd2SPaul Dagnelie boolean_t eos_marker; /* Marks the end of the stream */ 87a2cdcdd2SPaul Dagnelie blkptr_t bp; 88a2cdcdd2SPaul Dagnelie zbookmark_phys_t zb; 89a2cdcdd2SPaul Dagnelie uint8_t indblkshift; 90a2cdcdd2SPaul Dagnelie uint16_t datablkszsec; 91a2cdcdd2SPaul Dagnelie bqueue_node_t ln; 92a2cdcdd2SPaul Dagnelie }; 93a2cdcdd2SPaul Dagnelie 94efb80947Sahrens static int 954e3c9f44SBill Pijewski dump_bytes(dmu_sendarg_t *dsp, void *buf, int len) 96efb80947Sahrens { 979c3fd121SMatthew Ahrens dsl_dataset_t *ds = dmu_objset_ds(dsp->dsa_os); 98efb80947Sahrens ssize_t resid; /* have to get resid to get detailed errno */ 99fb09f5aaSMadhav Suresh ASSERT0(len % 8); 100efb80947Sahrens 1014e3c9f44SBill Pijewski dsp->dsa_err = vn_rdwr(UIO_WRITE, dsp->dsa_vp, 102efb80947Sahrens (caddr_t)buf, len, 103efb80947Sahrens 0, UIO_SYSSPACE, FAPPEND, RLIM64_INFINITY, CRED(), &resid); 1044e3c9f44SBill Pijewski 1054e3c9f44SBill Pijewski mutex_enter(&ds->ds_sendstream_lock); 1064e3c9f44SBill Pijewski *dsp->dsa_off += len; 1074e3c9f44SBill Pijewski mutex_exit(&ds->ds_sendstream_lock); 1084e3c9f44SBill Pijewski 1094e3c9f44SBill Pijewski return (dsp->dsa_err); 110efb80947Sahrens } 111efb80947Sahrens 11298110f08SMatthew Ahrens /* 11398110f08SMatthew Ahrens * For all record types except BEGIN, fill in the checksum (overlaid in 11498110f08SMatthew Ahrens * drr_u.drr_checksum.drr_checksum). The checksum verifies everything 11598110f08SMatthew Ahrens * up to the start of the checksum itself. 11698110f08SMatthew Ahrens */ 11798110f08SMatthew Ahrens static int 11898110f08SMatthew Ahrens dump_record(dmu_sendarg_t *dsp, void *payload, int payload_len) 11998110f08SMatthew Ahrens { 12098110f08SMatthew Ahrens ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 12198110f08SMatthew Ahrens ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); 12298110f08SMatthew Ahrens fletcher_4_incremental_native(dsp->dsa_drr, 12398110f08SMatthew Ahrens offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 12498110f08SMatthew Ahrens &dsp->dsa_zc); 12598110f08SMatthew Ahrens if (dsp->dsa_drr->drr_type != DRR_BEGIN) { 12698110f08SMatthew Ahrens ASSERT(ZIO_CHECKSUM_IS_ZERO(&dsp->dsa_drr->drr_u. 12798110f08SMatthew Ahrens drr_checksum.drr_checksum)); 12898110f08SMatthew Ahrens dsp->dsa_drr->drr_u.drr_checksum.drr_checksum = dsp->dsa_zc; 12998110f08SMatthew Ahrens } 13098110f08SMatthew Ahrens fletcher_4_incremental_native(&dsp->dsa_drr-> 13198110f08SMatthew Ahrens drr_u.drr_checksum.drr_checksum, 13298110f08SMatthew Ahrens sizeof (zio_cksum_t), &dsp->dsa_zc); 13398110f08SMatthew Ahrens if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0) 13498110f08SMatthew Ahrens return (SET_ERROR(EINTR)); 13598110f08SMatthew Ahrens if (payload_len != 0) { 13698110f08SMatthew Ahrens fletcher_4_incremental_native(payload, payload_len, 13798110f08SMatthew Ahrens &dsp->dsa_zc); 13898110f08SMatthew Ahrens if (dump_bytes(dsp, payload, payload_len) != 0) 13998110f08SMatthew Ahrens return (SET_ERROR(EINTR)); 14098110f08SMatthew Ahrens } 14198110f08SMatthew Ahrens return (0); 14298110f08SMatthew Ahrens } 14398110f08SMatthew Ahrens 14468ecb2ecSPaul Dagnelie /* 14568ecb2ecSPaul Dagnelie * Fill in the drr_free struct, or perform aggregation if the previous record is 14668ecb2ecSPaul Dagnelie * also a free record, and the two are adjacent. 14768ecb2ecSPaul Dagnelie * 14868ecb2ecSPaul Dagnelie * Note that we send free records even for a full send, because we want to be 14968ecb2ecSPaul Dagnelie * able to receive a full send as a clone, which requires a list of all the free 15068ecb2ecSPaul Dagnelie * and freeobject records that were generated on the source. 15168ecb2ecSPaul Dagnelie */ 152efb80947Sahrens static int 1534e3c9f44SBill Pijewski dump_free(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset, 154efb80947Sahrens uint64_t length) 155efb80947Sahrens { 1564e3c9f44SBill Pijewski struct drr_free *drrf = &(dsp->dsa_drr->drr_u.drr_free); 1579e69d7d0SLori Alt 1582f3d8780SMatthew Ahrens /* 1592f3d8780SMatthew Ahrens * When we receive a free record, dbuf_free_range() assumes 1602f3d8780SMatthew Ahrens * that the receiving system doesn't have any dbufs in the range 1612f3d8780SMatthew Ahrens * being freed. This is always true because there is a one-record 1622f3d8780SMatthew Ahrens * constraint: we only send one WRITE record for any given 1639c3fd121SMatthew Ahrens * object,offset. We know that the one-record constraint is 1642f3d8780SMatthew Ahrens * true because we always send data in increasing order by 1652f3d8780SMatthew Ahrens * object,offset. 1662f3d8780SMatthew Ahrens * 1672f3d8780SMatthew Ahrens * If the increasing-order constraint ever changes, we should find 1682f3d8780SMatthew Ahrens * another way to assert that the one-record constraint is still 1692f3d8780SMatthew Ahrens * satisfied. 1702f3d8780SMatthew Ahrens */ 1712f3d8780SMatthew Ahrens ASSERT(object > dsp->dsa_last_data_object || 1722f3d8780SMatthew Ahrens (object == dsp->dsa_last_data_object && 1732f3d8780SMatthew Ahrens offset > dsp->dsa_last_data_offset)); 1742f3d8780SMatthew Ahrens 175534029e5SSimon Klinkert if (length != -1ULL && offset + length < offset) 176534029e5SSimon Klinkert length = -1ULL; 177534029e5SSimon Klinkert 1789e69d7d0SLori Alt /* 1799e69d7d0SLori Alt * If there is a pending op, but it's not PENDING_FREE, push it out, 1809e69d7d0SLori Alt * since free block aggregation can only be done for blocks of the 1819e69d7d0SLori Alt * same type (i.e., DRR_FREE records can only be aggregated with 1829e69d7d0SLori Alt * other DRR_FREE records. DRR_FREEOBJECTS records can only be 1839e69d7d0SLori Alt * aggregated with other DRR_FREEOBJECTS records. 1849e69d7d0SLori Alt */ 1854e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE && 1864e3c9f44SBill Pijewski dsp->dsa_pending_op != PENDING_FREE) { 18798110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 188be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 1894e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 1909e69d7d0SLori Alt } 1919e69d7d0SLori Alt 1924e3c9f44SBill Pijewski if (dsp->dsa_pending_op == PENDING_FREE) { 1939e69d7d0SLori Alt /* 1949e69d7d0SLori Alt * There should never be a PENDING_FREE if length is -1 1959e69d7d0SLori Alt * (because dump_dnode is the only place where this 1969e69d7d0SLori Alt * function is called with a -1, and only after flushing 1979e69d7d0SLori Alt * any pending record). 1989e69d7d0SLori Alt */ 1999e69d7d0SLori Alt ASSERT(length != -1ULL); 2009e69d7d0SLori Alt /* 2019e69d7d0SLori Alt * Check to see whether this free block can be aggregated 2029e69d7d0SLori Alt * with pending one. 2039e69d7d0SLori Alt */ 2049e69d7d0SLori Alt if (drrf->drr_object == object && drrf->drr_offset + 2059e69d7d0SLori Alt drrf->drr_length == offset) { 2069e69d7d0SLori Alt drrf->drr_length += length; 2079e69d7d0SLori Alt return (0); 2089e69d7d0SLori Alt } else { 2099e69d7d0SLori Alt /* not a continuation. Push out pending record */ 21098110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 211be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 2124e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 2139e69d7d0SLori Alt } 2149e69d7d0SLori Alt } 2159e69d7d0SLori Alt /* create a FREE record and make it pending */ 2164e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 2174e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_FREE; 2189e69d7d0SLori Alt drrf->drr_object = object; 2199e69d7d0SLori Alt drrf->drr_offset = offset; 2209e69d7d0SLori Alt drrf->drr_length = length; 2214e3c9f44SBill Pijewski drrf->drr_toguid = dsp->dsa_toguid; 2229e69d7d0SLori Alt if (length == -1ULL) { 22398110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 224be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 2259e69d7d0SLori Alt } else { 2264e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_FREE; 2279e69d7d0SLori Alt } 228efb80947Sahrens 229efb80947Sahrens return (0); 230efb80947Sahrens } 231efb80947Sahrens 232efb80947Sahrens static int 2335d7b4d43SMatthew Ahrens dump_write(dmu_sendarg_t *dsp, dmu_object_type_t type, 2348e714474SLori Alt uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data) 235efb80947Sahrens { 2364e3c9f44SBill Pijewski struct drr_write *drrw = &(dsp->dsa_drr->drr_u.drr_write); 2379e69d7d0SLori Alt 2382f3d8780SMatthew Ahrens /* 2392f3d8780SMatthew Ahrens * We send data in increasing object, offset order. 2402f3d8780SMatthew Ahrens * See comment in dump_free() for details. 2412f3d8780SMatthew Ahrens */ 2422f3d8780SMatthew Ahrens ASSERT(object > dsp->dsa_last_data_object || 2432f3d8780SMatthew Ahrens (object == dsp->dsa_last_data_object && 2442f3d8780SMatthew Ahrens offset > dsp->dsa_last_data_offset)); 2452f3d8780SMatthew Ahrens dsp->dsa_last_data_object = object; 2462f3d8780SMatthew Ahrens dsp->dsa_last_data_offset = offset + blksz - 1; 2478e714474SLori Alt 2489e69d7d0SLori Alt /* 2499e69d7d0SLori Alt * If there is any kind of pending aggregation (currently either 2509e69d7d0SLori Alt * a grouping of free objects or free blocks), push it out to 2519e69d7d0SLori Alt * the stream, since aggregation can't be done across operations 2529e69d7d0SLori Alt * of different types. 2539e69d7d0SLori Alt */ 2544e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) { 25598110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 256be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 2574e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 2589e69d7d0SLori Alt } 25998110f08SMatthew Ahrens /* write a WRITE record */ 2604e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 2614e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_WRITE; 2629e69d7d0SLori Alt drrw->drr_object = object; 2639e69d7d0SLori Alt drrw->drr_type = type; 2649e69d7d0SLori Alt drrw->drr_offset = offset; 2659e69d7d0SLori Alt drrw->drr_length = blksz; 2664e3c9f44SBill Pijewski drrw->drr_toguid = dsp->dsa_toguid; 267b5152584SMatthew Ahrens if (bp == NULL || BP_IS_EMBEDDED(bp)) { 2685d7b4d43SMatthew Ahrens /* 269b5152584SMatthew Ahrens * There's no pre-computed checksum for partial-block 270b5152584SMatthew Ahrens * writes or embedded BP's, so (like 271b5152584SMatthew Ahrens * fletcher4-checkummed blocks) userland will have to 272b5152584SMatthew Ahrens * compute a dedup-capable checksum itself. 2735d7b4d43SMatthew Ahrens */ 2745d7b4d43SMatthew Ahrens drrw->drr_checksumtype = ZIO_CHECKSUM_OFF; 2755d7b4d43SMatthew Ahrens } else { 2765d7b4d43SMatthew Ahrens drrw->drr_checksumtype = BP_GET_CHECKSUM(bp); 27745818ee1SMatthew Ahrens if (zio_checksum_table[drrw->drr_checksumtype].ci_flags & 27845818ee1SMatthew Ahrens ZCHECKSUM_FLAG_DEDUP) 2795d7b4d43SMatthew Ahrens drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP; 2805d7b4d43SMatthew Ahrens DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp)); 2815d7b4d43SMatthew Ahrens DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp)); 2825d7b4d43SMatthew Ahrens DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp)); 2835d7b4d43SMatthew Ahrens drrw->drr_key.ddk_cksum = bp->blk_cksum; 2845d7b4d43SMatthew Ahrens } 285efb80947Sahrens 28698110f08SMatthew Ahrens if (dump_record(dsp, data, blksz) != 0) 287be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 288efb80947Sahrens return (0); 289efb80947Sahrens } 290efb80947Sahrens 2915d7b4d43SMatthew Ahrens static int 2925d7b4d43SMatthew Ahrens dump_write_embedded(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset, 2935d7b4d43SMatthew Ahrens int blksz, const blkptr_t *bp) 2945d7b4d43SMatthew Ahrens { 2955d7b4d43SMatthew Ahrens char buf[BPE_PAYLOAD_SIZE]; 2965d7b4d43SMatthew Ahrens struct drr_write_embedded *drrw = 2975d7b4d43SMatthew Ahrens &(dsp->dsa_drr->drr_u.drr_write_embedded); 2985d7b4d43SMatthew Ahrens 2995d7b4d43SMatthew Ahrens if (dsp->dsa_pending_op != PENDING_NONE) { 30098110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 3015d7b4d43SMatthew Ahrens return (EINTR); 3025d7b4d43SMatthew Ahrens dsp->dsa_pending_op = PENDING_NONE; 3035d7b4d43SMatthew Ahrens } 3045d7b4d43SMatthew Ahrens 3055d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); 3065d7b4d43SMatthew Ahrens 3075d7b4d43SMatthew Ahrens bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 3085d7b4d43SMatthew Ahrens dsp->dsa_drr->drr_type = DRR_WRITE_EMBEDDED; 3095d7b4d43SMatthew Ahrens drrw->drr_object = object; 3105d7b4d43SMatthew Ahrens drrw->drr_offset = offset; 3115d7b4d43SMatthew Ahrens drrw->drr_length = blksz; 3125d7b4d43SMatthew Ahrens drrw->drr_toguid = dsp->dsa_toguid; 3135d7b4d43SMatthew Ahrens drrw->drr_compression = BP_GET_COMPRESS(bp); 3145d7b4d43SMatthew Ahrens drrw->drr_etype = BPE_GET_ETYPE(bp); 3155d7b4d43SMatthew Ahrens drrw->drr_lsize = BPE_GET_LSIZE(bp); 3165d7b4d43SMatthew Ahrens drrw->drr_psize = BPE_GET_PSIZE(bp); 3175d7b4d43SMatthew Ahrens 3185d7b4d43SMatthew Ahrens decode_embedded_bp_compressed(bp, buf); 3195d7b4d43SMatthew Ahrens 32098110f08SMatthew Ahrens if (dump_record(dsp, buf, P2ROUNDUP(drrw->drr_psize, 8)) != 0) 3215d7b4d43SMatthew Ahrens return (EINTR); 3225d7b4d43SMatthew Ahrens return (0); 3235d7b4d43SMatthew Ahrens } 3245d7b4d43SMatthew Ahrens 3250a586ceaSMark Shellenbaum static int 3264e3c9f44SBill Pijewski dump_spill(dmu_sendarg_t *dsp, uint64_t object, int blksz, void *data) 3270a586ceaSMark Shellenbaum { 3284e3c9f44SBill Pijewski struct drr_spill *drrs = &(dsp->dsa_drr->drr_u.drr_spill); 3290a586ceaSMark Shellenbaum 3304e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) { 33198110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 332be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3334e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 3340a586ceaSMark Shellenbaum } 3350a586ceaSMark Shellenbaum 3360a586ceaSMark Shellenbaum /* write a SPILL record */ 3374e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 3384e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_SPILL; 3390a586ceaSMark Shellenbaum drrs->drr_object = object; 3400a586ceaSMark Shellenbaum drrs->drr_length = blksz; 3414e3c9f44SBill Pijewski drrs->drr_toguid = dsp->dsa_toguid; 3420a586ceaSMark Shellenbaum 34398110f08SMatthew Ahrens if (dump_record(dsp, data, blksz) != 0) 344be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3450a586ceaSMark Shellenbaum return (0); 3460a586ceaSMark Shellenbaum } 3470a586ceaSMark Shellenbaum 348efb80947Sahrens static int 3494e3c9f44SBill Pijewski dump_freeobjects(dmu_sendarg_t *dsp, uint64_t firstobj, uint64_t numobjs) 350efb80947Sahrens { 3514e3c9f44SBill Pijewski struct drr_freeobjects *drrfo = &(dsp->dsa_drr->drr_u.drr_freeobjects); 3529e69d7d0SLori Alt 3539e69d7d0SLori Alt /* 3549e69d7d0SLori Alt * If there is a pending op, but it's not PENDING_FREEOBJECTS, 3559e69d7d0SLori Alt * push it out, since free block aggregation can only be done for 3569e69d7d0SLori Alt * blocks of the same type (i.e., DRR_FREE records can only be 3579e69d7d0SLori Alt * aggregated with other DRR_FREE records. DRR_FREEOBJECTS records 3589e69d7d0SLori Alt * can only be aggregated with other DRR_FREEOBJECTS records. 3599e69d7d0SLori Alt */ 3604e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE && 3614e3c9f44SBill Pijewski dsp->dsa_pending_op != PENDING_FREEOBJECTS) { 36298110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 363be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3644e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 3659e69d7d0SLori Alt } 3664e3c9f44SBill Pijewski if (dsp->dsa_pending_op == PENDING_FREEOBJECTS) { 3679e69d7d0SLori Alt /* 3689e69d7d0SLori Alt * See whether this free object array can be aggregated 3699e69d7d0SLori Alt * with pending one 3709e69d7d0SLori Alt */ 3719e69d7d0SLori Alt if (drrfo->drr_firstobj + drrfo->drr_numobjs == firstobj) { 3729e69d7d0SLori Alt drrfo->drr_numobjs += numobjs; 3739e69d7d0SLori Alt return (0); 3749e69d7d0SLori Alt } else { 3759e69d7d0SLori Alt /* can't be aggregated. Push out pending record */ 37698110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 377be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3784e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 3799e69d7d0SLori Alt } 3809e69d7d0SLori Alt } 3819e69d7d0SLori Alt 382efb80947Sahrens /* write a FREEOBJECTS record */ 3834e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 3844e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_FREEOBJECTS; 3859e69d7d0SLori Alt drrfo->drr_firstobj = firstobj; 3869e69d7d0SLori Alt drrfo->drr_numobjs = numobjs; 3874e3c9f44SBill Pijewski drrfo->drr_toguid = dsp->dsa_toguid; 3889e69d7d0SLori Alt 3894e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_FREEOBJECTS; 390efb80947Sahrens 391efb80947Sahrens return (0); 392efb80947Sahrens } 393efb80947Sahrens 394efb80947Sahrens static int 3954e3c9f44SBill Pijewski dump_dnode(dmu_sendarg_t *dsp, uint64_t object, dnode_phys_t *dnp) 396efb80947Sahrens { 3974e3c9f44SBill Pijewski struct drr_object *drro = &(dsp->dsa_drr->drr_u.drr_object); 3989e69d7d0SLori Alt 3999c3fd121SMatthew Ahrens if (object < dsp->dsa_resume_object) { 4009c3fd121SMatthew Ahrens /* 4019c3fd121SMatthew Ahrens * Note: when resuming, we will visit all the dnodes in 4029c3fd121SMatthew Ahrens * the block of dnodes that we are resuming from. In 4039c3fd121SMatthew Ahrens * this case it's unnecessary to send the dnodes prior to 4049c3fd121SMatthew Ahrens * the one we are resuming from. We should be at most one 4059c3fd121SMatthew Ahrens * block's worth of dnodes behind the resume point. 4069c3fd121SMatthew Ahrens */ 4079c3fd121SMatthew Ahrens ASSERT3U(dsp->dsa_resume_object - object, <, 4089c3fd121SMatthew Ahrens 1 << (DNODE_BLOCK_SHIFT - DNODE_SHIFT)); 4099c3fd121SMatthew Ahrens return (0); 4109c3fd121SMatthew Ahrens } 4119c3fd121SMatthew Ahrens 412efb80947Sahrens if (dnp == NULL || dnp->dn_type == DMU_OT_NONE) 4134e3c9f44SBill Pijewski return (dump_freeobjects(dsp, object, 1)); 414efb80947Sahrens 4154e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) { 41698110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 417be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 4184e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 4199e69d7d0SLori Alt } 4209e69d7d0SLori Alt 421efb80947Sahrens /* write an OBJECT record */ 4224e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 4234e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_OBJECT; 4249e69d7d0SLori Alt drro->drr_object = object; 4259e69d7d0SLori Alt drro->drr_type = dnp->dn_type; 4269e69d7d0SLori Alt drro->drr_bonustype = dnp->dn_bonustype; 4279e69d7d0SLori Alt drro->drr_blksz = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT; 4289e69d7d0SLori Alt drro->drr_bonuslen = dnp->dn_bonuslen; 4299e69d7d0SLori Alt drro->drr_checksumtype = dnp->dn_checksum; 4309e69d7d0SLori Alt drro->drr_compress = dnp->dn_compress; 4314e3c9f44SBill Pijewski drro->drr_toguid = dsp->dsa_toguid; 4329e69d7d0SLori Alt 433b5152584SMatthew Ahrens if (!(dsp->dsa_featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 434b5152584SMatthew Ahrens drro->drr_blksz > SPA_OLD_MAXBLOCKSIZE) 435b5152584SMatthew Ahrens drro->drr_blksz = SPA_OLD_MAXBLOCKSIZE; 436b5152584SMatthew Ahrens 43798110f08SMatthew Ahrens if (dump_record(dsp, DN_BONUS(dnp), 43898110f08SMatthew Ahrens P2ROUNDUP(dnp->dn_bonuslen, 8)) != 0) { 439be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 44098110f08SMatthew Ahrens } 441efb80947Sahrens 4422f3d8780SMatthew Ahrens /* Free anything past the end of the file. */ 4434e3c9f44SBill Pijewski if (dump_free(dsp, object, (dnp->dn_maxblkid + 1) * 4442f3d8780SMatthew Ahrens (dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT), -1ULL) != 0) 445be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 4463b2aab18SMatthew Ahrens if (dsp->dsa_err != 0) 447be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 448efb80947Sahrens return (0); 449efb80947Sahrens } 450efb80947Sahrens 4515d7b4d43SMatthew Ahrens static boolean_t 4525d7b4d43SMatthew Ahrens backup_do_embed(dmu_sendarg_t *dsp, const blkptr_t *bp) 4535d7b4d43SMatthew Ahrens { 4545d7b4d43SMatthew Ahrens if (!BP_IS_EMBEDDED(bp)) 4555d7b4d43SMatthew Ahrens return (B_FALSE); 4565d7b4d43SMatthew Ahrens 4575d7b4d43SMatthew Ahrens /* 4585d7b4d43SMatthew Ahrens * Compression function must be legacy, or explicitly enabled. 4595d7b4d43SMatthew Ahrens */ 4605d7b4d43SMatthew Ahrens if ((BP_GET_COMPRESS(bp) >= ZIO_COMPRESS_LEGACY_FUNCTIONS && 4615d7b4d43SMatthew Ahrens !(dsp->dsa_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4))) 4625d7b4d43SMatthew Ahrens return (B_FALSE); 4635d7b4d43SMatthew Ahrens 4645d7b4d43SMatthew Ahrens /* 4655d7b4d43SMatthew Ahrens * Embed type must be explicitly enabled. 4665d7b4d43SMatthew Ahrens */ 4675d7b4d43SMatthew Ahrens switch (BPE_GET_ETYPE(bp)) { 4685d7b4d43SMatthew Ahrens case BP_EMBEDDED_TYPE_DATA: 4695d7b4d43SMatthew Ahrens if (dsp->dsa_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) 4705d7b4d43SMatthew Ahrens return (B_TRUE); 4715d7b4d43SMatthew Ahrens break; 4725d7b4d43SMatthew Ahrens default: 4735d7b4d43SMatthew Ahrens return (B_FALSE); 4745d7b4d43SMatthew Ahrens } 4755d7b4d43SMatthew Ahrens return (B_FALSE); 4765d7b4d43SMatthew Ahrens } 4775d7b4d43SMatthew Ahrens 478a2cdcdd2SPaul Dagnelie /* 479a2cdcdd2SPaul Dagnelie * This is the callback function to traverse_dataset that acts as the worker 480a2cdcdd2SPaul Dagnelie * thread for dmu_send_impl. 481a2cdcdd2SPaul Dagnelie */ 482a2cdcdd2SPaul Dagnelie /*ARGSUSED*/ 483a2cdcdd2SPaul Dagnelie static int 484a2cdcdd2SPaul Dagnelie send_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 485a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *zb, const struct dnode_phys *dnp, void *arg) 486a2cdcdd2SPaul Dagnelie { 487a2cdcdd2SPaul Dagnelie struct send_thread_arg *sta = arg; 488a2cdcdd2SPaul Dagnelie struct send_block_record *record; 489a2cdcdd2SPaul Dagnelie uint64_t record_size; 490a2cdcdd2SPaul Dagnelie int err = 0; 491efb80947Sahrens 4929c3fd121SMatthew Ahrens ASSERT(zb->zb_object == DMU_META_DNODE_OBJECT || 4939c3fd121SMatthew Ahrens zb->zb_object >= sta->resume.zb_object); 4949c3fd121SMatthew Ahrens 495a2cdcdd2SPaul Dagnelie if (sta->cancel) 496a2cdcdd2SPaul Dagnelie return (SET_ERROR(EINTR)); 497a2cdcdd2SPaul Dagnelie 498a2cdcdd2SPaul Dagnelie if (bp == NULL) { 499a2cdcdd2SPaul Dagnelie ASSERT3U(zb->zb_level, ==, ZB_DNODE_LEVEL); 500a2cdcdd2SPaul Dagnelie return (0); 501a2cdcdd2SPaul Dagnelie } else if (zb->zb_level < 0) { 502a2cdcdd2SPaul Dagnelie return (0); 503a2cdcdd2SPaul Dagnelie } 504a2cdcdd2SPaul Dagnelie 505a2cdcdd2SPaul Dagnelie record = kmem_zalloc(sizeof (struct send_block_record), KM_SLEEP); 506a2cdcdd2SPaul Dagnelie record->eos_marker = B_FALSE; 507a2cdcdd2SPaul Dagnelie record->bp = *bp; 508a2cdcdd2SPaul Dagnelie record->zb = *zb; 509a2cdcdd2SPaul Dagnelie record->indblkshift = dnp->dn_indblkshift; 510a2cdcdd2SPaul Dagnelie record->datablkszsec = dnp->dn_datablkszsec; 511a2cdcdd2SPaul Dagnelie record_size = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT; 512a2cdcdd2SPaul Dagnelie bqueue_enqueue(&sta->q, record, record_size); 513a2cdcdd2SPaul Dagnelie 514a2cdcdd2SPaul Dagnelie return (err); 515a2cdcdd2SPaul Dagnelie } 516a2cdcdd2SPaul Dagnelie 517a2cdcdd2SPaul Dagnelie /* 518a2cdcdd2SPaul Dagnelie * This function kicks off the traverse_dataset. It also handles setting the 519a2cdcdd2SPaul Dagnelie * error code of the thread in case something goes wrong, and pushes the End of 520a2cdcdd2SPaul Dagnelie * Stream record when the traverse_dataset call has finished. If there is no 521a2cdcdd2SPaul Dagnelie * dataset to traverse, the thread immediately pushes End of Stream marker. 522a2cdcdd2SPaul Dagnelie */ 523a2cdcdd2SPaul Dagnelie static void 524a2cdcdd2SPaul Dagnelie send_traverse_thread(void *arg) 525a2cdcdd2SPaul Dagnelie { 526a2cdcdd2SPaul Dagnelie struct send_thread_arg *st_arg = arg; 527a2cdcdd2SPaul Dagnelie int err; 528a2cdcdd2SPaul Dagnelie struct send_block_record *data; 529a2cdcdd2SPaul Dagnelie 530a2cdcdd2SPaul Dagnelie if (st_arg->ds != NULL) { 5319c3fd121SMatthew Ahrens err = traverse_dataset_resume(st_arg->ds, 5329c3fd121SMatthew Ahrens st_arg->fromtxg, &st_arg->resume, 5339c3fd121SMatthew Ahrens st_arg->flags, send_cb, st_arg); 5349c3fd121SMatthew Ahrens 535a2cdcdd2SPaul Dagnelie if (err != EINTR) 536a2cdcdd2SPaul Dagnelie st_arg->error_code = err; 537a2cdcdd2SPaul Dagnelie } 538a2cdcdd2SPaul Dagnelie data = kmem_zalloc(sizeof (*data), KM_SLEEP); 539a2cdcdd2SPaul Dagnelie data->eos_marker = B_TRUE; 540a2cdcdd2SPaul Dagnelie bqueue_enqueue(&st_arg->q, data, 1); 541a2cdcdd2SPaul Dagnelie } 542a2cdcdd2SPaul Dagnelie 543a2cdcdd2SPaul Dagnelie /* 544a2cdcdd2SPaul Dagnelie * This function actually handles figuring out what kind of record needs to be 545a2cdcdd2SPaul Dagnelie * dumped, reading the data (which has hopefully been prefetched), and calling 546a2cdcdd2SPaul Dagnelie * the appropriate helper function. 547a2cdcdd2SPaul Dagnelie */ 548efb80947Sahrens static int 549a2cdcdd2SPaul Dagnelie do_dump(dmu_sendarg_t *dsa, struct send_block_record *data) 550efb80947Sahrens { 551a2cdcdd2SPaul Dagnelie dsl_dataset_t *ds = dmu_objset_ds(dsa->dsa_os); 552a2cdcdd2SPaul Dagnelie const blkptr_t *bp = &data->bp; 553a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *zb = &data->zb; 554a2cdcdd2SPaul Dagnelie uint8_t indblkshift = data->indblkshift; 555a2cdcdd2SPaul Dagnelie uint16_t dblkszsec = data->datablkszsec; 556a2cdcdd2SPaul Dagnelie spa_t *spa = ds->ds_dir->dd_pool->dp_spa; 557efb80947Sahrens dmu_object_type_t type = bp ? BP_GET_TYPE(bp) : DMU_OT_NONE; 558efb80947Sahrens int err = 0; 559efb80947Sahrens 560a2cdcdd2SPaul Dagnelie ASSERT3U(zb->zb_level, >=, 0); 561efb80947Sahrens 5629c3fd121SMatthew Ahrens ASSERT(zb->zb_object == DMU_META_DNODE_OBJECT || 5639c3fd121SMatthew Ahrens zb->zb_object >= dsa->dsa_resume_object); 5649c3fd121SMatthew Ahrens 565b24ab676SJeff Bonwick if (zb->zb_object != DMU_META_DNODE_OBJECT && 566b24ab676SJeff Bonwick DMU_OBJECT_IS_SPECIAL(zb->zb_object)) { 56714843421SMatthew Ahrens return (0); 56843466aaeSMax Grossman } else if (BP_IS_HOLE(bp) && 56943466aaeSMax Grossman zb->zb_object == DMU_META_DNODE_OBJECT) { 570a2cdcdd2SPaul Dagnelie uint64_t span = BP_SPAN(dblkszsec, indblkshift, zb->zb_level); 57188b7b0f2SMatthew Ahrens uint64_t dnobj = (zb->zb_blkid * span) >> DNODE_SHIFT; 572a2cdcdd2SPaul Dagnelie err = dump_freeobjects(dsa, dnobj, span >> DNODE_SHIFT); 57343466aaeSMax Grossman } else if (BP_IS_HOLE(bp)) { 574a2cdcdd2SPaul Dagnelie uint64_t span = BP_SPAN(dblkszsec, indblkshift, zb->zb_level); 575a2cdcdd2SPaul Dagnelie uint64_t offset = zb->zb_blkid * span; 576a2cdcdd2SPaul Dagnelie err = dump_free(dsa, zb->zb_object, offset, span); 57788b7b0f2SMatthew Ahrens } else if (zb->zb_level > 0 || type == DMU_OT_OBJSET) { 57888b7b0f2SMatthew Ahrens return (0); 57988b7b0f2SMatthew Ahrens } else if (type == DMU_OT_DNODE) { 580efb80947Sahrens int blksz = BP_GET_LSIZE(bp); 5817adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 58288b7b0f2SMatthew Ahrens arc_buf_t *abuf; 583efb80947Sahrens 584a2cdcdd2SPaul Dagnelie ASSERT0(zb->zb_level); 585a2cdcdd2SPaul Dagnelie 5861b912ec7SGeorge Wilson if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf, 5871b912ec7SGeorge Wilson ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, 5881b912ec7SGeorge Wilson &aflags, zb) != 0) 589be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 59088b7b0f2SMatthew Ahrens 591a2cdcdd2SPaul Dagnelie dnode_phys_t *blk = abuf->b_data; 592a2cdcdd2SPaul Dagnelie uint64_t dnobj = zb->zb_blkid * (blksz >> DNODE_SHIFT); 593a2cdcdd2SPaul Dagnelie for (int i = 0; i < blksz >> DNODE_SHIFT; i++) { 594a2cdcdd2SPaul Dagnelie err = dump_dnode(dsa, dnobj + i, blk + i); 5953b2aab18SMatthew Ahrens if (err != 0) 596efb80947Sahrens break; 597efb80947Sahrens } 59888b7b0f2SMatthew Ahrens (void) arc_buf_remove_ref(abuf, &abuf); 5990a586ceaSMark Shellenbaum } else if (type == DMU_OT_SA) { 6007adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 6010a586ceaSMark Shellenbaum arc_buf_t *abuf; 6020a586ceaSMark Shellenbaum int blksz = BP_GET_LSIZE(bp); 6030a586ceaSMark Shellenbaum 6041b912ec7SGeorge Wilson if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf, 6051b912ec7SGeorge Wilson ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, 6061b912ec7SGeorge Wilson &aflags, zb) != 0) 607be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 6080a586ceaSMark Shellenbaum 609a2cdcdd2SPaul Dagnelie err = dump_spill(dsa, zb->zb_object, blksz, abuf->b_data); 6100a586ceaSMark Shellenbaum (void) arc_buf_remove_ref(abuf, &abuf); 611a2cdcdd2SPaul Dagnelie } else if (backup_do_embed(dsa, bp)) { 6125d7b4d43SMatthew Ahrens /* it's an embedded level-0 block of a regular object */ 613a2cdcdd2SPaul Dagnelie int blksz = dblkszsec << SPA_MINBLOCKSHIFT; 614a2cdcdd2SPaul Dagnelie ASSERT0(zb->zb_level); 615a2cdcdd2SPaul Dagnelie err = dump_write_embedded(dsa, zb->zb_object, 6165d7b4d43SMatthew Ahrens zb->zb_blkid * blksz, blksz, bp); 617a2cdcdd2SPaul Dagnelie } else { 618a2cdcdd2SPaul Dagnelie /* it's a level-0 block of a regular object */ 6197adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 62088b7b0f2SMatthew Ahrens arc_buf_t *abuf; 621a2cdcdd2SPaul Dagnelie int blksz = dblkszsec << SPA_MINBLOCKSHIFT; 622b5152584SMatthew Ahrens uint64_t offset; 62388b7b0f2SMatthew Ahrens 62478f17100SMatthew Ahrens ASSERT0(zb->zb_level); 6259c3fd121SMatthew Ahrens ASSERT(zb->zb_object > dsa->dsa_resume_object || 6269c3fd121SMatthew Ahrens (zb->zb_object == dsa->dsa_resume_object && 6279c3fd121SMatthew Ahrens zb->zb_blkid * blksz >= dsa->dsa_resume_offset)); 6289c3fd121SMatthew Ahrens 6291b912ec7SGeorge Wilson if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf, 6301b912ec7SGeorge Wilson ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, 6311b912ec7SGeorge Wilson &aflags, zb) != 0) { 63219b94df9SMatthew Ahrens if (zfs_send_corrupt_data) { 63319b94df9SMatthew Ahrens /* Send a block filled with 0x"zfs badd bloc" */ 63419b94df9SMatthew Ahrens abuf = arc_buf_alloc(spa, blksz, &abuf, 63519b94df9SMatthew Ahrens ARC_BUFC_DATA); 63619b94df9SMatthew Ahrens uint64_t *ptr; 63719b94df9SMatthew Ahrens for (ptr = abuf->b_data; 63819b94df9SMatthew Ahrens (char *)ptr < (char *)abuf->b_data + blksz; 63919b94df9SMatthew Ahrens ptr++) 6408c76e076SBrian Behlendorf *ptr = 0x2f5baddb10cULL; 64119b94df9SMatthew Ahrens } else { 642be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 64319b94df9SMatthew Ahrens } 64419b94df9SMatthew Ahrens } 64588b7b0f2SMatthew Ahrens 646b5152584SMatthew Ahrens offset = zb->zb_blkid * blksz; 647b5152584SMatthew Ahrens 648a2cdcdd2SPaul Dagnelie if (!(dsa->dsa_featureflags & 649b5152584SMatthew Ahrens DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 650b5152584SMatthew Ahrens blksz > SPA_OLD_MAXBLOCKSIZE) { 651b5152584SMatthew Ahrens char *buf = abuf->b_data; 652b5152584SMatthew Ahrens while (blksz > 0 && err == 0) { 653b5152584SMatthew Ahrens int n = MIN(blksz, SPA_OLD_MAXBLOCKSIZE); 654a2cdcdd2SPaul Dagnelie err = dump_write(dsa, type, zb->zb_object, 655b5152584SMatthew Ahrens offset, n, NULL, buf); 656b5152584SMatthew Ahrens offset += n; 657b5152584SMatthew Ahrens buf += n; 658b5152584SMatthew Ahrens blksz -= n; 659b5152584SMatthew Ahrens } 660b5152584SMatthew Ahrens } else { 661a2cdcdd2SPaul Dagnelie err = dump_write(dsa, type, zb->zb_object, 662b5152584SMatthew Ahrens offset, blksz, bp, abuf->b_data); 663b5152584SMatthew Ahrens } 66488b7b0f2SMatthew Ahrens (void) arc_buf_remove_ref(abuf, &abuf); 665efb80947Sahrens } 666efb80947Sahrens 667efb80947Sahrens ASSERT(err == 0 || err == EINTR); 668efb80947Sahrens return (err); 669efb80947Sahrens } 670efb80947Sahrens 6714445fffbSMatthew Ahrens /* 672a2cdcdd2SPaul Dagnelie * Pop the new data off the queue, and free the old data. 673a2cdcdd2SPaul Dagnelie */ 674a2cdcdd2SPaul Dagnelie static struct send_block_record * 675a2cdcdd2SPaul Dagnelie get_next_record(bqueue_t *bq, struct send_block_record *data) 676a2cdcdd2SPaul Dagnelie { 677a2cdcdd2SPaul Dagnelie struct send_block_record *tmp = bqueue_dequeue(bq); 678a2cdcdd2SPaul Dagnelie kmem_free(data, sizeof (*data)); 679a2cdcdd2SPaul Dagnelie return (tmp); 680a2cdcdd2SPaul Dagnelie } 681a2cdcdd2SPaul Dagnelie 682a2cdcdd2SPaul Dagnelie /* 683a2cdcdd2SPaul Dagnelie * Actually do the bulk of the work in a zfs send. 684a2cdcdd2SPaul Dagnelie * 685a2cdcdd2SPaul Dagnelie * Note: Releases dp using the specified tag. 6864445fffbSMatthew Ahrens */ 6873b2aab18SMatthew Ahrens static int 688a2cdcdd2SPaul Dagnelie dmu_send_impl(void *tag, dsl_pool_t *dp, dsl_dataset_t *to_ds, 6899c3fd121SMatthew Ahrens zfs_bookmark_phys_t *ancestor_zb, 6909c3fd121SMatthew Ahrens boolean_t is_clone, boolean_t embedok, boolean_t large_block_ok, int outfd, 6919c3fd121SMatthew Ahrens uint64_t resumeobj, uint64_t resumeoff, 6929c3fd121SMatthew Ahrens vnode_t *vp, offset_t *off) 693efb80947Sahrens { 6943b2aab18SMatthew Ahrens objset_t *os; 695efb80947Sahrens dmu_replay_record_t *drr; 6964e3c9f44SBill Pijewski dmu_sendarg_t *dsp; 697efb80947Sahrens int err; 6983cb34c60Sahrens uint64_t fromtxg = 0; 6995d7b4d43SMatthew Ahrens uint64_t featureflags = 0; 7009c3fd121SMatthew Ahrens struct send_thread_arg to_arg = { 0 }; 701efb80947Sahrens 702a2cdcdd2SPaul Dagnelie err = dmu_objset_from_ds(to_ds, &os); 7033b2aab18SMatthew Ahrens if (err != 0) { 7043b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 7053b2aab18SMatthew Ahrens return (err); 7063b2aab18SMatthew Ahrens } 707efb80947Sahrens 708efb80947Sahrens drr = kmem_zalloc(sizeof (dmu_replay_record_t), KM_SLEEP); 709efb80947Sahrens drr->drr_type = DRR_BEGIN; 710efb80947Sahrens drr->drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC; 7119e69d7d0SLori Alt DMU_SET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo, 7129e69d7d0SLori Alt DMU_SUBSTREAM); 713dc7cd546SMark Shellenbaum 714dc7cd546SMark Shellenbaum #ifdef _KERNEL 7153b2aab18SMatthew Ahrens if (dmu_objset_type(os) == DMU_OST_ZFS) { 716dc7cd546SMark Shellenbaum uint64_t version; 7173b2aab18SMatthew Ahrens if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &version) != 0) { 7184e3c9f44SBill Pijewski kmem_free(drr, sizeof (dmu_replay_record_t)); 7193b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 720be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 7214e3c9f44SBill Pijewski } 7223b2aab18SMatthew Ahrens if (version >= ZPL_VERSION_SA) { 7235d7b4d43SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_SA_SPILL; 724dc7cd546SMark Shellenbaum } 725dc7cd546SMark Shellenbaum } 726dc7cd546SMark Shellenbaum #endif 727dc7cd546SMark Shellenbaum 728ca0cc391SMatthew Ahrens if (large_block_ok && to_ds->ds_feature_inuse[SPA_FEATURE_LARGE_BLOCKS]) 729b5152584SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_LARGE_BLOCKS; 7305d7b4d43SMatthew Ahrens if (embedok && 7315d7b4d43SMatthew Ahrens spa_feature_is_active(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) { 7325d7b4d43SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_EMBED_DATA; 7335d7b4d43SMatthew Ahrens if (spa_feature_is_active(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 7345d7b4d43SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_EMBED_DATA_LZ4; 7355d7b4d43SMatthew Ahrens } 7365d7b4d43SMatthew Ahrens 7379c3fd121SMatthew Ahrens if (resumeobj != 0 || resumeoff != 0) { 7389c3fd121SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_RESUMING; 7399c3fd121SMatthew Ahrens } 7409c3fd121SMatthew Ahrens 7415d7b4d43SMatthew Ahrens DMU_SET_FEATUREFLAGS(drr->drr_u.drr_begin.drr_versioninfo, 7425d7b4d43SMatthew Ahrens featureflags); 7435d7b4d43SMatthew Ahrens 744efb80947Sahrens drr->drr_u.drr_begin.drr_creation_time = 745a2cdcdd2SPaul Dagnelie dsl_dataset_phys(to_ds)->ds_creation_time; 7463b2aab18SMatthew Ahrens drr->drr_u.drr_begin.drr_type = dmu_objset_type(os); 74778f17100SMatthew Ahrens if (is_clone) 7483cb34c60Sahrens drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CLONE; 749a2cdcdd2SPaul Dagnelie drr->drr_u.drr_begin.drr_toguid = dsl_dataset_phys(to_ds)->ds_guid; 750a2cdcdd2SPaul Dagnelie if (dsl_dataset_phys(to_ds)->ds_flags & DS_FLAG_CI_DATASET) 751ab04eb8eStimh drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CI_DATA; 752880094b6SAndrew Stormont if (zfs_send_set_freerecords_bit) 753880094b6SAndrew Stormont drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_FREERECORDS; 754ab04eb8eStimh 755a2cdcdd2SPaul Dagnelie if (ancestor_zb != NULL) { 756a2cdcdd2SPaul Dagnelie drr->drr_u.drr_begin.drr_fromguid = 757a2cdcdd2SPaul Dagnelie ancestor_zb->zbm_guid; 758a2cdcdd2SPaul Dagnelie fromtxg = ancestor_zb->zbm_creation_txg; 75978f17100SMatthew Ahrens } 760a2cdcdd2SPaul Dagnelie dsl_dataset_name(to_ds, drr->drr_u.drr_begin.drr_toname); 761a2cdcdd2SPaul Dagnelie if (!to_ds->ds_is_snapshot) { 76278f17100SMatthew Ahrens (void) strlcat(drr->drr_u.drr_begin.drr_toname, "@--head--", 76378f17100SMatthew Ahrens sizeof (drr->drr_u.drr_begin.drr_toname)); 7643b2aab18SMatthew Ahrens } 7653cb34c60Sahrens 7664e3c9f44SBill Pijewski dsp = kmem_zalloc(sizeof (dmu_sendarg_t), KM_SLEEP); 7674e3c9f44SBill Pijewski 7684e3c9f44SBill Pijewski dsp->dsa_drr = drr; 7694e3c9f44SBill Pijewski dsp->dsa_vp = vp; 7704e3c9f44SBill Pijewski dsp->dsa_outfd = outfd; 7714e3c9f44SBill Pijewski dsp->dsa_proc = curproc; 7723b2aab18SMatthew Ahrens dsp->dsa_os = os; 7734e3c9f44SBill Pijewski dsp->dsa_off = off; 774a2cdcdd2SPaul Dagnelie dsp->dsa_toguid = dsl_dataset_phys(to_ds)->ds_guid; 7754e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 7765d7b4d43SMatthew Ahrens dsp->dsa_featureflags = featureflags; 7779c3fd121SMatthew Ahrens dsp->dsa_resume_object = resumeobj; 7789c3fd121SMatthew Ahrens dsp->dsa_resume_offset = resumeoff; 7794e3c9f44SBill Pijewski 780a2cdcdd2SPaul Dagnelie mutex_enter(&to_ds->ds_sendstream_lock); 781a2cdcdd2SPaul Dagnelie list_insert_head(&to_ds->ds_sendstreams, dsp); 782a2cdcdd2SPaul Dagnelie mutex_exit(&to_ds->ds_sendstream_lock); 7834e3c9f44SBill Pijewski 784a2cdcdd2SPaul Dagnelie dsl_dataset_long_hold(to_ds, FTAG); 785de8d9cffSMatthew Ahrens dsl_pool_rele(dp, tag); 786de8d9cffSMatthew Ahrens 7879c3fd121SMatthew Ahrens void *payload = NULL; 7889c3fd121SMatthew Ahrens size_t payload_len = 0; 7899c3fd121SMatthew Ahrens if (resumeobj != 0 || resumeoff != 0) { 7909c3fd121SMatthew Ahrens dmu_object_info_t to_doi; 7919c3fd121SMatthew Ahrens err = dmu_object_info(os, resumeobj, &to_doi); 7929c3fd121SMatthew Ahrens if (err != 0) 7939c3fd121SMatthew Ahrens goto out; 7949c3fd121SMatthew Ahrens SET_BOOKMARK(&to_arg.resume, to_ds->ds_object, resumeobj, 0, 7959c3fd121SMatthew Ahrens resumeoff / to_doi.doi_data_block_size); 7969c3fd121SMatthew Ahrens 7979c3fd121SMatthew Ahrens nvlist_t *nvl = fnvlist_alloc(); 7989c3fd121SMatthew Ahrens fnvlist_add_uint64(nvl, "resume_object", resumeobj); 7999c3fd121SMatthew Ahrens fnvlist_add_uint64(nvl, "resume_offset", resumeoff); 8009c3fd121SMatthew Ahrens payload = fnvlist_pack(nvl, &payload_len); 8019c3fd121SMatthew Ahrens drr->drr_payloadlen = payload_len; 8029c3fd121SMatthew Ahrens fnvlist_free(nvl); 8039c3fd121SMatthew Ahrens } 8049c3fd121SMatthew Ahrens 8059c3fd121SMatthew Ahrens err = dump_record(dsp, payload, payload_len); 8069c3fd121SMatthew Ahrens fnvlist_pack_free(payload, payload_len); 8079c3fd121SMatthew Ahrens if (err != 0) { 8084e3c9f44SBill Pijewski err = dsp->dsa_err; 8094e3c9f44SBill Pijewski goto out; 810efb80947Sahrens } 811efb80947Sahrens 812a2cdcdd2SPaul Dagnelie err = bqueue_init(&to_arg.q, zfs_send_queue_length, 813a2cdcdd2SPaul Dagnelie offsetof(struct send_block_record, ln)); 814a2cdcdd2SPaul Dagnelie to_arg.error_code = 0; 815a2cdcdd2SPaul Dagnelie to_arg.cancel = B_FALSE; 816a2cdcdd2SPaul Dagnelie to_arg.ds = to_ds; 817a2cdcdd2SPaul Dagnelie to_arg.fromtxg = fromtxg; 818a2cdcdd2SPaul Dagnelie to_arg.flags = TRAVERSE_PRE | TRAVERSE_PREFETCH; 819a2cdcdd2SPaul Dagnelie (void) thread_create(NULL, 0, send_traverse_thread, &to_arg, 0, curproc, 820a2cdcdd2SPaul Dagnelie TS_RUN, minclsyspri); 821a2cdcdd2SPaul Dagnelie 822a2cdcdd2SPaul Dagnelie struct send_block_record *to_data; 823a2cdcdd2SPaul Dagnelie to_data = bqueue_dequeue(&to_arg.q); 824a2cdcdd2SPaul Dagnelie 825a2cdcdd2SPaul Dagnelie while (!to_data->eos_marker && err == 0) { 826a2cdcdd2SPaul Dagnelie err = do_dump(dsp, to_data); 827a2cdcdd2SPaul Dagnelie to_data = get_next_record(&to_arg.q, to_data); 828a2cdcdd2SPaul Dagnelie if (issig(JUSTLOOKING) && issig(FORREAL)) 829a2cdcdd2SPaul Dagnelie err = EINTR; 830a2cdcdd2SPaul Dagnelie } 831a2cdcdd2SPaul Dagnelie 832a2cdcdd2SPaul Dagnelie if (err != 0) { 833a2cdcdd2SPaul Dagnelie to_arg.cancel = B_TRUE; 834a2cdcdd2SPaul Dagnelie while (!to_data->eos_marker) { 835a2cdcdd2SPaul Dagnelie to_data = get_next_record(&to_arg.q, to_data); 836a2cdcdd2SPaul Dagnelie } 837a2cdcdd2SPaul Dagnelie } 838a2cdcdd2SPaul Dagnelie kmem_free(to_data, sizeof (*to_data)); 839a2cdcdd2SPaul Dagnelie 840a2cdcdd2SPaul Dagnelie bqueue_destroy(&to_arg.q); 841a2cdcdd2SPaul Dagnelie 842a2cdcdd2SPaul Dagnelie if (err == 0 && to_arg.error_code != 0) 843a2cdcdd2SPaul Dagnelie err = to_arg.error_code; 844a2cdcdd2SPaul Dagnelie 845a2cdcdd2SPaul Dagnelie if (err != 0) 846a2cdcdd2SPaul Dagnelie goto out; 847efb80947Sahrens 8484e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) 84998110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 850be6fd75aSMatthew Ahrens err = SET_ERROR(EINTR); 8519e69d7d0SLori Alt 8523b2aab18SMatthew Ahrens if (err != 0) { 8533b2aab18SMatthew Ahrens if (err == EINTR && dsp->dsa_err != 0) 8544e3c9f44SBill Pijewski err = dsp->dsa_err; 8554e3c9f44SBill Pijewski goto out; 856efb80947Sahrens } 857efb80947Sahrens 858efb80947Sahrens bzero(drr, sizeof (dmu_replay_record_t)); 859efb80947Sahrens drr->drr_type = DRR_END; 8604e3c9f44SBill Pijewski drr->drr_u.drr_end.drr_checksum = dsp->dsa_zc; 8614e3c9f44SBill Pijewski drr->drr_u.drr_end.drr_toguid = dsp->dsa_toguid; 862efb80947Sahrens 863a2cdcdd2SPaul Dagnelie if (dump_record(dsp, NULL, 0) != 0) 8644e3c9f44SBill Pijewski err = dsp->dsa_err; 865efb80947Sahrens 8664e3c9f44SBill Pijewski out: 867a2cdcdd2SPaul Dagnelie mutex_enter(&to_ds->ds_sendstream_lock); 868a2cdcdd2SPaul Dagnelie list_remove(&to_ds->ds_sendstreams, dsp); 869a2cdcdd2SPaul Dagnelie mutex_exit(&to_ds->ds_sendstream_lock); 8704e3c9f44SBill Pijewski 871efb80947Sahrens kmem_free(drr, sizeof (dmu_replay_record_t)); 8724e3c9f44SBill Pijewski kmem_free(dsp, sizeof (dmu_sendarg_t)); 873efb80947Sahrens 874a2cdcdd2SPaul Dagnelie dsl_dataset_long_rele(to_ds, FTAG); 8753b2aab18SMatthew Ahrens 8764e3c9f44SBill Pijewski return (err); 877efb80947Sahrens } 878efb80947Sahrens 87919b94df9SMatthew Ahrens int 8803b2aab18SMatthew Ahrens dmu_send_obj(const char *pool, uint64_t tosnap, uint64_t fromsnap, 881b5152584SMatthew Ahrens boolean_t embedok, boolean_t large_block_ok, 882b5152584SMatthew Ahrens int outfd, vnode_t *vp, offset_t *off) 8833b2aab18SMatthew Ahrens { 8843b2aab18SMatthew Ahrens dsl_pool_t *dp; 8853b2aab18SMatthew Ahrens dsl_dataset_t *ds; 8863b2aab18SMatthew Ahrens dsl_dataset_t *fromds = NULL; 8873b2aab18SMatthew Ahrens int err; 8883b2aab18SMatthew Ahrens 8893b2aab18SMatthew Ahrens err = dsl_pool_hold(pool, FTAG, &dp); 8903b2aab18SMatthew Ahrens if (err != 0) 8913b2aab18SMatthew Ahrens return (err); 8923b2aab18SMatthew Ahrens 8933b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, tosnap, FTAG, &ds); 8943b2aab18SMatthew Ahrens if (err != 0) { 8953b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 8963b2aab18SMatthew Ahrens return (err); 8973b2aab18SMatthew Ahrens } 8983b2aab18SMatthew Ahrens 8993b2aab18SMatthew Ahrens if (fromsnap != 0) { 90078f17100SMatthew Ahrens zfs_bookmark_phys_t zb; 90178f17100SMatthew Ahrens boolean_t is_clone; 90278f17100SMatthew Ahrens 9033b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, fromsnap, FTAG, &fromds); 9043b2aab18SMatthew Ahrens if (err != 0) { 9053b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9063b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 9073b2aab18SMatthew Ahrens return (err); 9083b2aab18SMatthew Ahrens } 90978f17100SMatthew Ahrens if (!dsl_dataset_is_before(ds, fromds, 0)) 91078f17100SMatthew Ahrens err = SET_ERROR(EXDEV); 911c1379625SJustin T. Gibbs zb.zbm_creation_time = 912c1379625SJustin T. Gibbs dsl_dataset_phys(fromds)->ds_creation_time; 913c1379625SJustin T. Gibbs zb.zbm_creation_txg = dsl_dataset_phys(fromds)->ds_creation_txg; 914c1379625SJustin T. Gibbs zb.zbm_guid = dsl_dataset_phys(fromds)->ds_guid; 91578f17100SMatthew Ahrens is_clone = (fromds->ds_dir != ds->ds_dir); 91678f17100SMatthew Ahrens dsl_dataset_rele(fromds, FTAG); 917b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone, 9189c3fd121SMatthew Ahrens embedok, large_block_ok, outfd, 0, 0, vp, off); 91978f17100SMatthew Ahrens } else { 920b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE, 9219c3fd121SMatthew Ahrens embedok, large_block_ok, outfd, 0, 0, vp, off); 9223b2aab18SMatthew Ahrens } 92378f17100SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 92478f17100SMatthew Ahrens return (err); 9253b2aab18SMatthew Ahrens } 9263b2aab18SMatthew Ahrens 9273b2aab18SMatthew Ahrens int 9289c3fd121SMatthew Ahrens dmu_send(const char *tosnap, const char *fromsnap, boolean_t embedok, 9299c3fd121SMatthew Ahrens boolean_t large_block_ok, int outfd, uint64_t resumeobj, uint64_t resumeoff, 9309c3fd121SMatthew Ahrens vnode_t *vp, offset_t *off) 9313b2aab18SMatthew Ahrens { 9323b2aab18SMatthew Ahrens dsl_pool_t *dp; 9333b2aab18SMatthew Ahrens dsl_dataset_t *ds; 9343b2aab18SMatthew Ahrens int err; 93578f17100SMatthew Ahrens boolean_t owned = B_FALSE; 9363b2aab18SMatthew Ahrens 93778f17100SMatthew Ahrens if (fromsnap != NULL && strpbrk(fromsnap, "@#") == NULL) 938be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 9393b2aab18SMatthew Ahrens 9403b2aab18SMatthew Ahrens err = dsl_pool_hold(tosnap, FTAG, &dp); 9413b2aab18SMatthew Ahrens if (err != 0) 9423b2aab18SMatthew Ahrens return (err); 9433b2aab18SMatthew Ahrens 94478f17100SMatthew Ahrens if (strchr(tosnap, '@') == NULL && spa_writeable(dp->dp_spa)) { 94578f17100SMatthew Ahrens /* 94678f17100SMatthew Ahrens * We are sending a filesystem or volume. Ensure 94778f17100SMatthew Ahrens * that it doesn't change by owning the dataset. 94878f17100SMatthew Ahrens */ 94978f17100SMatthew Ahrens err = dsl_dataset_own(dp, tosnap, FTAG, &ds); 95078f17100SMatthew Ahrens owned = B_TRUE; 95178f17100SMatthew Ahrens } else { 95278f17100SMatthew Ahrens err = dsl_dataset_hold(dp, tosnap, FTAG, &ds); 95378f17100SMatthew Ahrens } 9543b2aab18SMatthew Ahrens if (err != 0) { 9553b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 9563b2aab18SMatthew Ahrens return (err); 9573b2aab18SMatthew Ahrens } 9583b2aab18SMatthew Ahrens 9593b2aab18SMatthew Ahrens if (fromsnap != NULL) { 96078f17100SMatthew Ahrens zfs_bookmark_phys_t zb; 96178f17100SMatthew Ahrens boolean_t is_clone = B_FALSE; 96278f17100SMatthew Ahrens int fsnamelen = strchr(tosnap, '@') - tosnap; 96378f17100SMatthew Ahrens 96478f17100SMatthew Ahrens /* 96578f17100SMatthew Ahrens * If the fromsnap is in a different filesystem, then 96678f17100SMatthew Ahrens * mark the send stream as a clone. 96778f17100SMatthew Ahrens */ 96878f17100SMatthew Ahrens if (strncmp(tosnap, fromsnap, fsnamelen) != 0 || 96978f17100SMatthew Ahrens (fromsnap[fsnamelen] != '@' && 97078f17100SMatthew Ahrens fromsnap[fsnamelen] != '#')) { 97178f17100SMatthew Ahrens is_clone = B_TRUE; 97278f17100SMatthew Ahrens } 97378f17100SMatthew Ahrens 97478f17100SMatthew Ahrens if (strchr(fromsnap, '@')) { 97578f17100SMatthew Ahrens dsl_dataset_t *fromds; 97678f17100SMatthew Ahrens err = dsl_dataset_hold(dp, fromsnap, FTAG, &fromds); 97778f17100SMatthew Ahrens if (err == 0) { 97878f17100SMatthew Ahrens if (!dsl_dataset_is_before(ds, fromds, 0)) 97978f17100SMatthew Ahrens err = SET_ERROR(EXDEV); 98078f17100SMatthew Ahrens zb.zbm_creation_time = 981c1379625SJustin T. Gibbs dsl_dataset_phys(fromds)->ds_creation_time; 98278f17100SMatthew Ahrens zb.zbm_creation_txg = 983c1379625SJustin T. Gibbs dsl_dataset_phys(fromds)->ds_creation_txg; 984c1379625SJustin T. Gibbs zb.zbm_guid = dsl_dataset_phys(fromds)->ds_guid; 98578f17100SMatthew Ahrens is_clone = (ds->ds_dir != fromds->ds_dir); 98678f17100SMatthew Ahrens dsl_dataset_rele(fromds, FTAG); 98778f17100SMatthew Ahrens } 98878f17100SMatthew Ahrens } else { 98978f17100SMatthew Ahrens err = dsl_bookmark_lookup(dp, fromsnap, ds, &zb); 99078f17100SMatthew Ahrens } 9913b2aab18SMatthew Ahrens if (err != 0) { 9923b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9933b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 9943b2aab18SMatthew Ahrens return (err); 9953b2aab18SMatthew Ahrens } 996b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone, 9979c3fd121SMatthew Ahrens embedok, large_block_ok, 9989c3fd121SMatthew Ahrens outfd, resumeobj, resumeoff, vp, off); 99978f17100SMatthew Ahrens } else { 1000b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE, 10019c3fd121SMatthew Ahrens embedok, large_block_ok, 10029c3fd121SMatthew Ahrens outfd, resumeobj, resumeoff, vp, off); 10033b2aab18SMatthew Ahrens } 100478f17100SMatthew Ahrens if (owned) 100578f17100SMatthew Ahrens dsl_dataset_disown(ds, FTAG); 100678f17100SMatthew Ahrens else 100778f17100SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 100878f17100SMatthew Ahrens return (err); 10093b2aab18SMatthew Ahrens } 10103b2aab18SMatthew Ahrens 1011643da460SMax Grossman static int 1012643da460SMax Grossman dmu_adjust_send_estimate_for_indirects(dsl_dataset_t *ds, uint64_t size, 1013643da460SMax Grossman uint64_t *sizep) 1014643da460SMax Grossman { 1015643da460SMax Grossman int err; 1016643da460SMax Grossman /* 1017643da460SMax Grossman * Assume that space (both on-disk and in-stream) is dominated by 1018643da460SMax Grossman * data. We will adjust for indirect blocks and the copies property, 1019643da460SMax Grossman * but ignore per-object space used (eg, dnodes and DRR_OBJECT records). 1020643da460SMax Grossman */ 1021643da460SMax Grossman 1022643da460SMax Grossman /* 1023643da460SMax Grossman * Subtract out approximate space used by indirect blocks. 1024643da460SMax Grossman * Assume most space is used by data blocks (non-indirect, non-dnode). 1025643da460SMax Grossman * Assume all blocks are recordsize. Assume ditto blocks and 1026643da460SMax Grossman * internal fragmentation counter out compression. 1027643da460SMax Grossman * 1028643da460SMax Grossman * Therefore, space used by indirect blocks is sizeof(blkptr_t) per 1029643da460SMax Grossman * block, which we observe in practice. 1030643da460SMax Grossman */ 1031643da460SMax Grossman uint64_t recordsize; 1032643da460SMax Grossman err = dsl_prop_get_int_ds(ds, "recordsize", &recordsize); 1033643da460SMax Grossman if (err != 0) 1034643da460SMax Grossman return (err); 1035643da460SMax Grossman size -= size / recordsize * sizeof (blkptr_t); 1036643da460SMax Grossman 1037643da460SMax Grossman /* Add in the space for the record associated with each block. */ 1038643da460SMax Grossman size += size / recordsize * sizeof (dmu_replay_record_t); 1039643da460SMax Grossman 1040643da460SMax Grossman *sizep = size; 1041643da460SMax Grossman 1042643da460SMax Grossman return (0); 1043643da460SMax Grossman } 1044643da460SMax Grossman 10453b2aab18SMatthew Ahrens int 10463b2aab18SMatthew Ahrens dmu_send_estimate(dsl_dataset_t *ds, dsl_dataset_t *fromds, uint64_t *sizep) 104719b94df9SMatthew Ahrens { 104819b94df9SMatthew Ahrens dsl_pool_t *dp = ds->ds_dir->dd_pool; 104919b94df9SMatthew Ahrens int err; 105019b94df9SMatthew Ahrens uint64_t size; 105119b94df9SMatthew Ahrens 10523b2aab18SMatthew Ahrens ASSERT(dsl_pool_config_held(dp)); 10533b2aab18SMatthew Ahrens 105419b94df9SMatthew Ahrens /* tosnap must be a snapshot */ 1055bc9014e6SJustin Gibbs if (!ds->ds_is_snapshot) 1056be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 105719b94df9SMatthew Ahrens 105824218bebSAndriy Gapon /* fromsnap, if provided, must be a snapshot */ 105924218bebSAndriy Gapon if (fromds != NULL && !fromds->ds_is_snapshot) 106024218bebSAndriy Gapon return (SET_ERROR(EINVAL)); 106124218bebSAndriy Gapon 10624445fffbSMatthew Ahrens /* 10634445fffbSMatthew Ahrens * fromsnap must be an earlier snapshot from the same fs as tosnap, 10644445fffbSMatthew Ahrens * or the origin's fs. 10654445fffbSMatthew Ahrens */ 106678f17100SMatthew Ahrens if (fromds != NULL && !dsl_dataset_is_before(ds, fromds, 0)) 1067be6fd75aSMatthew Ahrens return (SET_ERROR(EXDEV)); 106819b94df9SMatthew Ahrens 106919b94df9SMatthew Ahrens /* Get uncompressed size estimate of changed data. */ 107019b94df9SMatthew Ahrens if (fromds == NULL) { 1071c1379625SJustin T. Gibbs size = dsl_dataset_phys(ds)->ds_uncompressed_bytes; 107219b94df9SMatthew Ahrens } else { 107319b94df9SMatthew Ahrens uint64_t used, comp; 107419b94df9SMatthew Ahrens err = dsl_dataset_space_written(fromds, ds, 107519b94df9SMatthew Ahrens &used, &comp, &size); 10763b2aab18SMatthew Ahrens if (err != 0) 107719b94df9SMatthew Ahrens return (err); 107819b94df9SMatthew Ahrens } 107919b94df9SMatthew Ahrens 1080643da460SMax Grossman err = dmu_adjust_send_estimate_for_indirects(ds, size, sizep); 1081643da460SMax Grossman return (err); 1082643da460SMax Grossman } 1083643da460SMax Grossman 1084643da460SMax Grossman /* 1085643da460SMax Grossman * Simple callback used to traverse the blocks of a snapshot and sum their 1086643da460SMax Grossman * uncompressed size 1087643da460SMax Grossman */ 1088643da460SMax Grossman /* ARGSUSED */ 1089643da460SMax Grossman static int 1090643da460SMax Grossman dmu_calculate_send_traversal(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 1091643da460SMax Grossman const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 1092643da460SMax Grossman { 1093643da460SMax Grossman uint64_t *spaceptr = arg; 1094643da460SMax Grossman if (bp != NULL && !BP_IS_HOLE(bp)) { 1095643da460SMax Grossman *spaceptr += BP_GET_UCSIZE(bp); 1096643da460SMax Grossman } 1097643da460SMax Grossman return (0); 1098643da460SMax Grossman } 1099643da460SMax Grossman 1100643da460SMax Grossman /* 1101643da460SMax Grossman * Given a desination snapshot and a TXG, calculate the approximate size of a 1102643da460SMax Grossman * send stream sent from that TXG. from_txg may be zero, indicating that the 1103643da460SMax Grossman * whole snapshot will be sent. 1104643da460SMax Grossman */ 1105643da460SMax Grossman int 1106643da460SMax Grossman dmu_send_estimate_from_txg(dsl_dataset_t *ds, uint64_t from_txg, 1107643da460SMax Grossman uint64_t *sizep) 1108643da460SMax Grossman { 1109643da460SMax Grossman dsl_pool_t *dp = ds->ds_dir->dd_pool; 1110643da460SMax Grossman int err; 1111643da460SMax Grossman uint64_t size = 0; 1112643da460SMax Grossman 1113643da460SMax Grossman ASSERT(dsl_pool_config_held(dp)); 1114643da460SMax Grossman 1115643da460SMax Grossman /* tosnap must be a snapshot */ 1116643da460SMax Grossman if (!dsl_dataset_is_snapshot(ds)) 1117643da460SMax Grossman return (SET_ERROR(EINVAL)); 1118643da460SMax Grossman 1119643da460SMax Grossman /* verify that from_txg is before the provided snapshot was taken */ 1120643da460SMax Grossman if (from_txg >= dsl_dataset_phys(ds)->ds_creation_txg) { 1121643da460SMax Grossman return (SET_ERROR(EXDEV)); 1122643da460SMax Grossman } 112319b94df9SMatthew Ahrens 112419b94df9SMatthew Ahrens /* 1125643da460SMax Grossman * traverse the blocks of the snapshot with birth times after 1126643da460SMax Grossman * from_txg, summing their uncompressed size 112719b94df9SMatthew Ahrens */ 1128643da460SMax Grossman err = traverse_dataset(ds, from_txg, TRAVERSE_POST, 1129643da460SMax Grossman dmu_calculate_send_traversal, &size); 1130643da460SMax Grossman if (err) 113119b94df9SMatthew Ahrens return (err); 113219b94df9SMatthew Ahrens 1133643da460SMax Grossman err = dmu_adjust_send_estimate_for_indirects(ds, size, sizep); 1134643da460SMax Grossman return (err); 113519b94df9SMatthew Ahrens } 113619b94df9SMatthew Ahrens 11373b2aab18SMatthew Ahrens typedef struct dmu_recv_begin_arg { 11383b2aab18SMatthew Ahrens const char *drba_origin; 11393b2aab18SMatthew Ahrens dmu_recv_cookie_t *drba_cookie; 11403b2aab18SMatthew Ahrens cred_t *drba_cred; 114134f2f8cfSMatthew Ahrens uint64_t drba_snapobj; 11423b2aab18SMatthew Ahrens } dmu_recv_begin_arg_t; 1143f18faf3fSek 1144f18faf3fSek static int 11453b2aab18SMatthew Ahrens recv_begin_check_existing_impl(dmu_recv_begin_arg_t *drba, dsl_dataset_t *ds, 11463b2aab18SMatthew Ahrens uint64_t fromguid) 1147f18faf3fSek { 11483cb34c60Sahrens uint64_t val; 11493b2aab18SMatthew Ahrens int error; 11503b2aab18SMatthew Ahrens dsl_pool_t *dp = ds->ds_dir->dd_pool; 1151f18faf3fSek 11523b2aab18SMatthew Ahrens /* temporary clone name must not exist */ 11533b2aab18SMatthew Ahrens error = zap_lookup(dp->dp_meta_objset, 1154c1379625SJustin T. Gibbs dsl_dir_phys(ds->ds_dir)->dd_child_dir_zapobj, recv_clone_name, 11553b2aab18SMatthew Ahrens 8, 1, &val); 11563b2aab18SMatthew Ahrens if (error != ENOENT) 11573b2aab18SMatthew Ahrens return (error == 0 ? EBUSY : error); 11583b2aab18SMatthew Ahrens 1159feaa74e4SMark Maybee /* new snapshot name must not exist */ 11603b2aab18SMatthew Ahrens error = zap_lookup(dp->dp_meta_objset, 1161c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_snapnames_zapobj, 1162c1379625SJustin T. Gibbs drba->drba_cookie->drc_tosnap, 8, 1, &val); 11633b2aab18SMatthew Ahrens if (error != ENOENT) 11643b2aab18SMatthew Ahrens return (error == 0 ? EEXIST : error); 1165feaa74e4SMark Maybee 1166a2afb611SJerry Jelinek /* 1167a2afb611SJerry Jelinek * Check snapshot limit before receiving. We'll recheck again at the 1168a2afb611SJerry Jelinek * end, but might as well abort before receiving if we're already over 1169a2afb611SJerry Jelinek * the limit. 1170a2afb611SJerry Jelinek * 1171a2afb611SJerry Jelinek * Note that we do not check the file system limit with 1172a2afb611SJerry Jelinek * dsl_dir_fscount_check because the temporary %clones don't count 1173a2afb611SJerry Jelinek * against that limit. 1174a2afb611SJerry Jelinek */ 1175a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, 1, ZFS_PROP_SNAPSHOT_LIMIT, 1176a2afb611SJerry Jelinek NULL, drba->drba_cred); 1177a2afb611SJerry Jelinek if (error != 0) 1178a2afb611SJerry Jelinek return (error); 1179a2afb611SJerry Jelinek 11803b2aab18SMatthew Ahrens if (fromguid != 0) { 118134f2f8cfSMatthew Ahrens dsl_dataset_t *snap; 1182c1379625SJustin T. Gibbs uint64_t obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; 118334f2f8cfSMatthew Ahrens 118434f2f8cfSMatthew Ahrens /* Find snapshot in this dir that matches fromguid. */ 118534f2f8cfSMatthew Ahrens while (obj != 0) { 118634f2f8cfSMatthew Ahrens error = dsl_dataset_hold_obj(dp, obj, FTAG, 118734f2f8cfSMatthew Ahrens &snap); 118834f2f8cfSMatthew Ahrens if (error != 0) 118934f2f8cfSMatthew Ahrens return (SET_ERROR(ENODEV)); 119034f2f8cfSMatthew Ahrens if (snap->ds_dir != ds->ds_dir) { 119134f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 119234f2f8cfSMatthew Ahrens return (SET_ERROR(ENODEV)); 119334f2f8cfSMatthew Ahrens } 1194c1379625SJustin T. Gibbs if (dsl_dataset_phys(snap)->ds_guid == fromguid) 119534f2f8cfSMatthew Ahrens break; 1196c1379625SJustin T. Gibbs obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 119734f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 119834f2f8cfSMatthew Ahrens } 119934f2f8cfSMatthew Ahrens if (obj == 0) 1200be6fd75aSMatthew Ahrens return (SET_ERROR(ENODEV)); 120192241e0bSTom Erickson 120234f2f8cfSMatthew Ahrens if (drba->drba_cookie->drc_force) { 120334f2f8cfSMatthew Ahrens drba->drba_snapobj = obj; 120434f2f8cfSMatthew Ahrens } else { 120534f2f8cfSMatthew Ahrens /* 120634f2f8cfSMatthew Ahrens * If we are not forcing, there must be no 120734f2f8cfSMatthew Ahrens * changes since fromsnap. 120834f2f8cfSMatthew Ahrens */ 120934f2f8cfSMatthew Ahrens if (dsl_dataset_modified_since_snap(ds, snap)) { 121092241e0bSTom Erickson dsl_dataset_rele(snap, FTAG); 121134f2f8cfSMatthew Ahrens return (SET_ERROR(ETXTBSY)); 121292241e0bSTom Erickson } 121334f2f8cfSMatthew Ahrens drba->drba_snapobj = ds->ds_prev->ds_object; 121492241e0bSTom Erickson } 121534f2f8cfSMatthew Ahrens 121634f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 1217ae46e4c7SMatthew Ahrens } else { 12185bae108fSAndriy Gapon /* if full, then must be forced */ 12195bae108fSAndriy Gapon if (!drba->drba_cookie->drc_force) 12205bae108fSAndriy Gapon return (SET_ERROR(EEXIST)); 12215bae108fSAndriy Gapon /* start from $ORIGIN@$ORIGIN, if supported */ 12225bae108fSAndriy Gapon drba->drba_snapobj = dp->dp_origin_snap != NULL ? 12235bae108fSAndriy Gapon dp->dp_origin_snap->ds_object : 0; 1224ae46e4c7SMatthew Ahrens } 12253cb34c60Sahrens 12263cb34c60Sahrens return (0); 12273b2aab18SMatthew Ahrens 12283b2aab18SMatthew Ahrens } 12293b2aab18SMatthew Ahrens 12303b2aab18SMatthew Ahrens static int 12313b2aab18SMatthew Ahrens dmu_recv_begin_check(void *arg, dmu_tx_t *tx) 12323b2aab18SMatthew Ahrens { 12333b2aab18SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 12343b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 12353b2aab18SMatthew Ahrens struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 12363b2aab18SMatthew Ahrens uint64_t fromguid = drrb->drr_fromguid; 12373b2aab18SMatthew Ahrens int flags = drrb->drr_flags; 12383b2aab18SMatthew Ahrens int error; 12395d7b4d43SMatthew Ahrens uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 12403b2aab18SMatthew Ahrens dsl_dataset_t *ds; 12413b2aab18SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 12423b2aab18SMatthew Ahrens 12433b2aab18SMatthew Ahrens /* already checked */ 12443b2aab18SMatthew Ahrens ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); 12459c3fd121SMatthew Ahrens ASSERT(!(featureflags & DMU_BACKUP_FEATURE_RESUMING)); 12463b2aab18SMatthew Ahrens 12473b2aab18SMatthew Ahrens if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == 12483b2aab18SMatthew Ahrens DMU_COMPOUNDSTREAM || 12493b2aab18SMatthew Ahrens drrb->drr_type >= DMU_OST_NUMTYPES || 12503b2aab18SMatthew Ahrens ((flags & DRR_FLAG_CLONE) && drba->drba_origin == NULL)) 1251be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 12523b2aab18SMatthew Ahrens 12533b2aab18SMatthew Ahrens /* Verify pool version supports SA if SA_SPILL feature set */ 12545d7b4d43SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && 12555d7b4d43SMatthew Ahrens spa_version(dp->dp_spa) < SPA_VERSION_SA) 12565d7b4d43SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12575d7b4d43SMatthew Ahrens 12589c3fd121SMatthew Ahrens if (drba->drba_cookie->drc_resumable && 12599c3fd121SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EXTENSIBLE_DATASET)) 12609c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12619c3fd121SMatthew Ahrens 12625d7b4d43SMatthew Ahrens /* 12635d7b4d43SMatthew Ahrens * The receiving code doesn't know how to translate a WRITE_EMBEDDED 12645d7b4d43SMatthew Ahrens * record to a plan WRITE record, so the pool must have the 12655d7b4d43SMatthew Ahrens * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED 12665d7b4d43SMatthew Ahrens * records. Same with WRITE_EMBEDDED records that use LZ4 compression. 12675d7b4d43SMatthew Ahrens */ 12685d7b4d43SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && 12695d7b4d43SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) 12705d7b4d43SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12715d7b4d43SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4) && 12725d7b4d43SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 1273be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12743b2aab18SMatthew Ahrens 1275b5152584SMatthew Ahrens /* 1276b5152584SMatthew Ahrens * The receiving code doesn't know how to translate large blocks 1277b5152584SMatthew Ahrens * to smaller ones, so the pool must have the LARGE_BLOCKS 1278b5152584SMatthew Ahrens * feature enabled if the stream has LARGE_BLOCKS. 1279b5152584SMatthew Ahrens */ 1280b5152584SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 1281b5152584SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LARGE_BLOCKS)) 1282b5152584SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 1283b5152584SMatthew Ahrens 12843b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, tofs, FTAG, &ds); 12853b2aab18SMatthew Ahrens if (error == 0) { 12863b2aab18SMatthew Ahrens /* target fs already exists; recv into temp clone */ 12873b2aab18SMatthew Ahrens 12883b2aab18SMatthew Ahrens /* Can't recv a clone into an existing fs */ 128968ecb2ecSPaul Dagnelie if (flags & DRR_FLAG_CLONE || drba->drba_origin) { 12903b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1291be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 12923b2aab18SMatthew Ahrens } 12933b2aab18SMatthew Ahrens 12943b2aab18SMatthew Ahrens error = recv_begin_check_existing_impl(drba, ds, fromguid); 12953b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 12963b2aab18SMatthew Ahrens } else if (error == ENOENT) { 12973b2aab18SMatthew Ahrens /* target fs does not exist; must be a full backup or clone */ 12983b2aab18SMatthew Ahrens char buf[MAXNAMELEN]; 12993b2aab18SMatthew Ahrens 13003b2aab18SMatthew Ahrens /* 13013b2aab18SMatthew Ahrens * If it's a non-clone incremental, we are missing the 13023b2aab18SMatthew Ahrens * target fs, so fail the recv. 13033b2aab18SMatthew Ahrens */ 1304a2cdcdd2SPaul Dagnelie if (fromguid != 0 && !(flags & DRR_FLAG_CLONE || 1305a2cdcdd2SPaul Dagnelie drba->drba_origin)) 1306be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 13073b2aab18SMatthew Ahrens 130868ecb2ecSPaul Dagnelie /* 130968ecb2ecSPaul Dagnelie * If we're receiving a full send as a clone, and it doesn't 131068ecb2ecSPaul Dagnelie * contain all the necessary free records and freeobject 131168ecb2ecSPaul Dagnelie * records, reject it. 131268ecb2ecSPaul Dagnelie */ 131368ecb2ecSPaul Dagnelie if (fromguid == 0 && drba->drba_origin && 131468ecb2ecSPaul Dagnelie !(flags & DRR_FLAG_FREERECORDS)) 131568ecb2ecSPaul Dagnelie return (SET_ERROR(EINVAL)); 131668ecb2ecSPaul Dagnelie 13173b2aab18SMatthew Ahrens /* Open the parent of tofs */ 13183b2aab18SMatthew Ahrens ASSERT3U(strlen(tofs), <, MAXNAMELEN); 13193b2aab18SMatthew Ahrens (void) strlcpy(buf, tofs, strrchr(tofs, '/') - tofs + 1); 13203b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, buf, FTAG, &ds); 13213b2aab18SMatthew Ahrens if (error != 0) 13223b2aab18SMatthew Ahrens return (error); 13233b2aab18SMatthew Ahrens 1324a2afb611SJerry Jelinek /* 1325a2afb611SJerry Jelinek * Check filesystem and snapshot limits before receiving. We'll 1326a2afb611SJerry Jelinek * recheck snapshot limits again at the end (we create the 1327a2afb611SJerry Jelinek * filesystems and increment those counts during begin_sync). 1328a2afb611SJerry Jelinek */ 1329a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, 1, 1330a2afb611SJerry Jelinek ZFS_PROP_FILESYSTEM_LIMIT, NULL, drba->drba_cred); 1331a2afb611SJerry Jelinek if (error != 0) { 1332a2afb611SJerry Jelinek dsl_dataset_rele(ds, FTAG); 1333a2afb611SJerry Jelinek return (error); 1334a2afb611SJerry Jelinek } 1335a2afb611SJerry Jelinek 1336a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, 1, 1337a2afb611SJerry Jelinek ZFS_PROP_SNAPSHOT_LIMIT, NULL, drba->drba_cred); 1338a2afb611SJerry Jelinek if (error != 0) { 1339a2afb611SJerry Jelinek dsl_dataset_rele(ds, FTAG); 1340a2afb611SJerry Jelinek return (error); 1341a2afb611SJerry Jelinek } 1342a2afb611SJerry Jelinek 13433b2aab18SMatthew Ahrens if (drba->drba_origin != NULL) { 13443b2aab18SMatthew Ahrens dsl_dataset_t *origin; 13453b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, drba->drba_origin, 13463b2aab18SMatthew Ahrens FTAG, &origin); 13473b2aab18SMatthew Ahrens if (error != 0) { 13483b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 13493b2aab18SMatthew Ahrens return (error); 13503b2aab18SMatthew Ahrens } 1351bc9014e6SJustin Gibbs if (!origin->ds_is_snapshot) { 13523b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 13533b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1354be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 13553b2aab18SMatthew Ahrens } 135668ecb2ecSPaul Dagnelie if (dsl_dataset_phys(origin)->ds_guid != fromguid && 135768ecb2ecSPaul Dagnelie fromguid != 0) { 13583b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 13593b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1360be6fd75aSMatthew Ahrens return (SET_ERROR(ENODEV)); 13613b2aab18SMatthew Ahrens } 13623b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 13633b2aab18SMatthew Ahrens } 13643b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 13653b2aab18SMatthew Ahrens error = 0; 13663b2aab18SMatthew Ahrens } 13673b2aab18SMatthew Ahrens return (error); 1368f18faf3fSek } 1369f18faf3fSek 1370f18faf3fSek static void 13713b2aab18SMatthew Ahrens dmu_recv_begin_sync(void *arg, dmu_tx_t *tx) 1372f18faf3fSek { 13733b2aab18SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 13743b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 13759c3fd121SMatthew Ahrens objset_t *mos = dp->dp_meta_objset; 13763b2aab18SMatthew Ahrens struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 13773b2aab18SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 13783b2aab18SMatthew Ahrens dsl_dataset_t *ds, *newds; 1379f18faf3fSek uint64_t dsobj; 13803b2aab18SMatthew Ahrens int error; 13819c3fd121SMatthew Ahrens uint64_t crflags = 0; 13823b2aab18SMatthew Ahrens 13839c3fd121SMatthew Ahrens if (drrb->drr_flags & DRR_FLAG_CI_DATA) 13849c3fd121SMatthew Ahrens crflags |= DS_FLAG_CI_DATASET; 1385f18faf3fSek 13863b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, tofs, FTAG, &ds); 13873b2aab18SMatthew Ahrens if (error == 0) { 13883b2aab18SMatthew Ahrens /* create temporary clone */ 138934f2f8cfSMatthew Ahrens dsl_dataset_t *snap = NULL; 139034f2f8cfSMatthew Ahrens if (drba->drba_snapobj != 0) { 139134f2f8cfSMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(dp, 139234f2f8cfSMatthew Ahrens drba->drba_snapobj, FTAG, &snap)); 139334f2f8cfSMatthew Ahrens } 13943b2aab18SMatthew Ahrens dsobj = dsl_dataset_create_sync(ds->ds_dir, recv_clone_name, 139534f2f8cfSMatthew Ahrens snap, crflags, drba->drba_cred, tx); 1396f40b29ceSPaul Dagnelie if (drba->drba_snapobj != 0) 1397f40b29ceSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 13983b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 13993b2aab18SMatthew Ahrens } else { 14003b2aab18SMatthew Ahrens dsl_dir_t *dd; 14013b2aab18SMatthew Ahrens const char *tail; 14023b2aab18SMatthew Ahrens dsl_dataset_t *origin = NULL; 14033b2aab18SMatthew Ahrens 14043b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, tofs, FTAG, &dd, &tail)); 14053b2aab18SMatthew Ahrens 14063b2aab18SMatthew Ahrens if (drba->drba_origin != NULL) { 14073b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, drba->drba_origin, 14083b2aab18SMatthew Ahrens FTAG, &origin)); 14093b2aab18SMatthew Ahrens } 14103b2aab18SMatthew Ahrens 14113b2aab18SMatthew Ahrens /* Create new dataset. */ 14123b2aab18SMatthew Ahrens dsobj = dsl_dataset_create_sync(dd, 14133b2aab18SMatthew Ahrens strrchr(tofs, '/') + 1, 14143b2aab18SMatthew Ahrens origin, crflags, drba->drba_cred, tx); 14153b2aab18SMatthew Ahrens if (origin != NULL) 14163b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 14173b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 14183b2aab18SMatthew Ahrens drba->drba_cookie->drc_newfs = B_TRUE; 14193b2aab18SMatthew Ahrens } 14203b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_own_obj(dp, dsobj, dmu_recv_tag, &newds)); 14213b2aab18SMatthew Ahrens 14229c3fd121SMatthew Ahrens if (drba->drba_cookie->drc_resumable) { 14239c3fd121SMatthew Ahrens dsl_dataset_zapify(newds, tx); 14249c3fd121SMatthew Ahrens if (drrb->drr_fromguid != 0) { 14259c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_FROMGUID, 14269c3fd121SMatthew Ahrens 8, 1, &drrb->drr_fromguid, tx)); 14279c3fd121SMatthew Ahrens } 14289c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TOGUID, 14299c3fd121SMatthew Ahrens 8, 1, &drrb->drr_toguid, tx)); 14309c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TONAME, 14319c3fd121SMatthew Ahrens 1, strlen(drrb->drr_toname) + 1, drrb->drr_toname, tx)); 14329c3fd121SMatthew Ahrens uint64_t one = 1; 14339c3fd121SMatthew Ahrens uint64_t zero = 0; 14349c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OBJECT, 14359c3fd121SMatthew Ahrens 8, 1, &one, tx)); 14369c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OFFSET, 14379c3fd121SMatthew Ahrens 8, 1, &zero, tx)); 14389c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_BYTES, 14399c3fd121SMatthew Ahrens 8, 1, &zero, tx)); 14409c3fd121SMatthew Ahrens if (DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & 14419c3fd121SMatthew Ahrens DMU_BACKUP_FEATURE_EMBED_DATA) { 14429c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_EMBEDOK, 14439c3fd121SMatthew Ahrens 8, 1, &one, tx)); 14449c3fd121SMatthew Ahrens } 14459c3fd121SMatthew Ahrens } 14469c3fd121SMatthew Ahrens 14473b2aab18SMatthew Ahrens dmu_buf_will_dirty(newds->ds_dbuf, tx); 1448c1379625SJustin T. Gibbs dsl_dataset_phys(newds)->ds_flags |= DS_FLAG_INCONSISTENT; 14493cb34c60Sahrens 1450ae46e4c7SMatthew Ahrens /* 1451ae46e4c7SMatthew Ahrens * If we actually created a non-clone, we need to create the 1452ae46e4c7SMatthew Ahrens * objset in our new dataset. 1453ae46e4c7SMatthew Ahrens */ 14543b2aab18SMatthew Ahrens if (BP_IS_HOLE(dsl_dataset_get_blkptr(newds))) { 1455ae46e4c7SMatthew Ahrens (void) dmu_objset_create_impl(dp->dp_spa, 14563b2aab18SMatthew Ahrens newds, dsl_dataset_get_blkptr(newds), drrb->drr_type, tx); 1457ae46e4c7SMatthew Ahrens } 1458ae46e4c7SMatthew Ahrens 14593b2aab18SMatthew Ahrens drba->drba_cookie->drc_ds = newds; 1460dc7cd546SMark Shellenbaum 14613b2aab18SMatthew Ahrens spa_history_log_internal_ds(newds, "receive", tx, ""); 1462dc7cd546SMark Shellenbaum } 1463dc7cd546SMark Shellenbaum 14649c3fd121SMatthew Ahrens static int 14659c3fd121SMatthew Ahrens dmu_recv_resume_begin_check(void *arg, dmu_tx_t *tx) 14669c3fd121SMatthew Ahrens { 14679c3fd121SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 14689c3fd121SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 14699c3fd121SMatthew Ahrens struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 14709c3fd121SMatthew Ahrens int error; 14719c3fd121SMatthew Ahrens uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 14729c3fd121SMatthew Ahrens dsl_dataset_t *ds; 14739c3fd121SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 14749c3fd121SMatthew Ahrens 14759c3fd121SMatthew Ahrens /* already checked */ 14769c3fd121SMatthew Ahrens ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); 14779c3fd121SMatthew Ahrens ASSERT(featureflags & DMU_BACKUP_FEATURE_RESUMING); 14789c3fd121SMatthew Ahrens 14799c3fd121SMatthew Ahrens if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == 14809c3fd121SMatthew Ahrens DMU_COMPOUNDSTREAM || 14819c3fd121SMatthew Ahrens drrb->drr_type >= DMU_OST_NUMTYPES) 14829c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 14839c3fd121SMatthew Ahrens 14849c3fd121SMatthew Ahrens /* Verify pool version supports SA if SA_SPILL feature set */ 14859c3fd121SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && 14869c3fd121SMatthew Ahrens spa_version(dp->dp_spa) < SPA_VERSION_SA) 14879c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 14889c3fd121SMatthew Ahrens 14899c3fd121SMatthew Ahrens /* 14909c3fd121SMatthew Ahrens * The receiving code doesn't know how to translate a WRITE_EMBEDDED 14919c3fd121SMatthew Ahrens * record to a plain WRITE record, so the pool must have the 14929c3fd121SMatthew Ahrens * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED 14939c3fd121SMatthew Ahrens * records. Same with WRITE_EMBEDDED records that use LZ4 compression. 14949c3fd121SMatthew Ahrens */ 14959c3fd121SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && 14969c3fd121SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) 14979c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 14989c3fd121SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4) && 14999c3fd121SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 15009c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 15019c3fd121SMatthew Ahrens 15029c3fd121SMatthew Ahrens char recvname[ZFS_MAXNAMELEN]; 15039c3fd121SMatthew Ahrens 15049c3fd121SMatthew Ahrens (void) snprintf(recvname, sizeof (recvname), "%s/%s", 15059c3fd121SMatthew Ahrens tofs, recv_clone_name); 15069c3fd121SMatthew Ahrens 15079c3fd121SMatthew Ahrens if (dsl_dataset_hold(dp, recvname, FTAG, &ds) != 0) { 15089c3fd121SMatthew Ahrens /* %recv does not exist; continue in tofs */ 15099c3fd121SMatthew Ahrens error = dsl_dataset_hold(dp, tofs, FTAG, &ds); 15109c3fd121SMatthew Ahrens if (error != 0) 15119c3fd121SMatthew Ahrens return (error); 15129c3fd121SMatthew Ahrens } 15139c3fd121SMatthew Ahrens 15149c3fd121SMatthew Ahrens /* check that ds is marked inconsistent */ 15159c3fd121SMatthew Ahrens if (!DS_IS_INCONSISTENT(ds)) { 15169c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15179c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15189c3fd121SMatthew Ahrens } 15199c3fd121SMatthew Ahrens 15209c3fd121SMatthew Ahrens /* check that there is resuming data, and that the toguid matches */ 15219c3fd121SMatthew Ahrens if (!dsl_dataset_is_zapified(ds)) { 15229c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15239c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15249c3fd121SMatthew Ahrens } 15259c3fd121SMatthew Ahrens uint64_t val; 15269c3fd121SMatthew Ahrens error = zap_lookup(dp->dp_meta_objset, ds->ds_object, 15279c3fd121SMatthew Ahrens DS_FIELD_RESUME_TOGUID, sizeof (val), 1, &val); 15289c3fd121SMatthew Ahrens if (error != 0 || drrb->drr_toguid != val) { 15299c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15309c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15319c3fd121SMatthew Ahrens } 15329c3fd121SMatthew Ahrens 15339c3fd121SMatthew Ahrens /* 15349c3fd121SMatthew Ahrens * Check if the receive is still running. If so, it will be owned. 15359c3fd121SMatthew Ahrens * Note that nothing else can own the dataset (e.g. after the receive 15369c3fd121SMatthew Ahrens * fails) because it will be marked inconsistent. 15379c3fd121SMatthew Ahrens */ 15389c3fd121SMatthew Ahrens if (dsl_dataset_has_owner(ds)) { 15399c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15409c3fd121SMatthew Ahrens return (SET_ERROR(EBUSY)); 15419c3fd121SMatthew Ahrens } 15429c3fd121SMatthew Ahrens 15439c3fd121SMatthew Ahrens /* There should not be any snapshots of this fs yet. */ 15449c3fd121SMatthew Ahrens if (ds->ds_prev != NULL && ds->ds_prev->ds_dir == ds->ds_dir) { 15459c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15469c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15479c3fd121SMatthew Ahrens } 15489c3fd121SMatthew Ahrens 15499c3fd121SMatthew Ahrens /* 15509c3fd121SMatthew Ahrens * Note: resume point will be checked when we process the first WRITE 15519c3fd121SMatthew Ahrens * record. 15529c3fd121SMatthew Ahrens */ 15539c3fd121SMatthew Ahrens 15549c3fd121SMatthew Ahrens /* check that the origin matches */ 15559c3fd121SMatthew Ahrens val = 0; 15569c3fd121SMatthew Ahrens (void) zap_lookup(dp->dp_meta_objset, ds->ds_object, 15579c3fd121SMatthew Ahrens DS_FIELD_RESUME_FROMGUID, sizeof (val), 1, &val); 15589c3fd121SMatthew Ahrens if (drrb->drr_fromguid != val) { 15599c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15609c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15619c3fd121SMatthew Ahrens } 15629c3fd121SMatthew Ahrens 15639c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15649c3fd121SMatthew Ahrens return (0); 15659c3fd121SMatthew Ahrens } 15669c3fd121SMatthew Ahrens 15679c3fd121SMatthew Ahrens static void 15689c3fd121SMatthew Ahrens dmu_recv_resume_begin_sync(void *arg, dmu_tx_t *tx) 15699c3fd121SMatthew Ahrens { 15709c3fd121SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 15719c3fd121SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 15729c3fd121SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 15739c3fd121SMatthew Ahrens dsl_dataset_t *ds; 15749c3fd121SMatthew Ahrens uint64_t dsobj; 15759c3fd121SMatthew Ahrens char recvname[ZFS_MAXNAMELEN]; 15769c3fd121SMatthew Ahrens 15779c3fd121SMatthew Ahrens (void) snprintf(recvname, sizeof (recvname), "%s/%s", 15789c3fd121SMatthew Ahrens tofs, recv_clone_name); 15799c3fd121SMatthew Ahrens 15809c3fd121SMatthew Ahrens if (dsl_dataset_hold(dp, recvname, FTAG, &ds) != 0) { 15819c3fd121SMatthew Ahrens /* %recv does not exist; continue in tofs */ 15829c3fd121SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, tofs, FTAG, &ds)); 15839c3fd121SMatthew Ahrens drba->drba_cookie->drc_newfs = B_TRUE; 15849c3fd121SMatthew Ahrens } 15859c3fd121SMatthew Ahrens 15869c3fd121SMatthew Ahrens /* clear the inconsistent flag so that we can own it */ 15879c3fd121SMatthew Ahrens ASSERT(DS_IS_INCONSISTENT(ds)); 15889c3fd121SMatthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx); 15899c3fd121SMatthew Ahrens dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; 15909c3fd121SMatthew Ahrens dsobj = ds->ds_object; 15919c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15929c3fd121SMatthew Ahrens 15939c3fd121SMatthew Ahrens VERIFY0(dsl_dataset_own_obj(dp, dsobj, dmu_recv_tag, &ds)); 15949c3fd121SMatthew Ahrens 15959c3fd121SMatthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx); 15969c3fd121SMatthew Ahrens dsl_dataset_phys(ds)->ds_flags |= DS_FLAG_INCONSISTENT; 15979c3fd121SMatthew Ahrens 15989c3fd121SMatthew Ahrens ASSERT(!BP_IS_HOLE(dsl_dataset_get_blkptr(ds))); 15999c3fd121SMatthew Ahrens 16009c3fd121SMatthew Ahrens drba->drba_cookie->drc_ds = ds; 16019c3fd121SMatthew Ahrens 16029c3fd121SMatthew Ahrens spa_history_log_internal_ds(ds, "resume receive", tx, ""); 16039c3fd121SMatthew Ahrens } 16049c3fd121SMatthew Ahrens 16053cb34c60Sahrens /* 16063cb34c60Sahrens * NB: callers *MUST* call dmu_recv_stream() if dmu_recv_begin() 16073cb34c60Sahrens * succeeds; otherwise we will leak the holds on the datasets. 16083cb34c60Sahrens */ 16093cb34c60Sahrens int 16109c3fd121SMatthew Ahrens dmu_recv_begin(char *tofs, char *tosnap, dmu_replay_record_t *drr_begin, 16119c3fd121SMatthew Ahrens boolean_t force, boolean_t resumable, char *origin, dmu_recv_cookie_t *drc) 1612efb80947Sahrens { 16133b2aab18SMatthew Ahrens dmu_recv_begin_arg_t drba = { 0 }; 1614ab04eb8eStimh 16153cb34c60Sahrens bzero(drc, sizeof (dmu_recv_cookie_t)); 16169c3fd121SMatthew Ahrens drc->drc_drr_begin = drr_begin; 16179c3fd121SMatthew Ahrens drc->drc_drrb = &drr_begin->drr_u.drr_begin; 16183cb34c60Sahrens drc->drc_tosnap = tosnap; 16193b2aab18SMatthew Ahrens drc->drc_tofs = tofs; 16203cb34c60Sahrens drc->drc_force = force; 16219c3fd121SMatthew Ahrens drc->drc_resumable = resumable; 1622a2afb611SJerry Jelinek drc->drc_cred = CRED(); 1623efb80947Sahrens 16249c3fd121SMatthew Ahrens if (drc->drc_drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { 16253b2aab18SMatthew Ahrens drc->drc_byteswap = B_TRUE; 16269c3fd121SMatthew Ahrens fletcher_4_incremental_byteswap(drr_begin, 16273b2aab18SMatthew Ahrens sizeof (dmu_replay_record_t), &drc->drc_cksum); 16289c3fd121SMatthew Ahrens byteswap_record(drr_begin); 16299c3fd121SMatthew Ahrens } else if (drc->drc_drrb->drr_magic == DMU_BACKUP_MAGIC) { 16309c3fd121SMatthew Ahrens fletcher_4_incremental_native(drr_begin, 16313b2aab18SMatthew Ahrens sizeof (dmu_replay_record_t), &drc->drc_cksum); 16329c3fd121SMatthew Ahrens } else { 16339c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 16343cb34c60Sahrens } 16353cb34c60Sahrens 16363b2aab18SMatthew Ahrens drba.drba_origin = origin; 16373b2aab18SMatthew Ahrens drba.drba_cookie = drc; 16383b2aab18SMatthew Ahrens drba.drba_cred = CRED(); 16393b2aab18SMatthew Ahrens 16409c3fd121SMatthew Ahrens if (DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo) & 16419c3fd121SMatthew Ahrens DMU_BACKUP_FEATURE_RESUMING) { 16429c3fd121SMatthew Ahrens return (dsl_sync_task(tofs, 16439c3fd121SMatthew Ahrens dmu_recv_resume_begin_check, dmu_recv_resume_begin_sync, 16449c3fd121SMatthew Ahrens &drba, 5, ZFS_SPACE_CHECK_NORMAL)); 16459c3fd121SMatthew Ahrens } else { 16469c3fd121SMatthew Ahrens return (dsl_sync_task(tofs, 16479c3fd121SMatthew Ahrens dmu_recv_begin_check, dmu_recv_begin_sync, 16489c3fd121SMatthew Ahrens &drba, 5, ZFS_SPACE_CHECK_NORMAL)); 16499c3fd121SMatthew Ahrens } 1650efb80947Sahrens } 1651efb80947Sahrens 1652a2cdcdd2SPaul Dagnelie struct receive_record_arg { 1653a2cdcdd2SPaul Dagnelie dmu_replay_record_t header; 1654a2cdcdd2SPaul Dagnelie void *payload; /* Pointer to a buffer containing the payload */ 1655a2cdcdd2SPaul Dagnelie /* 1656a2cdcdd2SPaul Dagnelie * If the record is a write, pointer to the arc_buf_t containing the 1657a2cdcdd2SPaul Dagnelie * payload. 1658a2cdcdd2SPaul Dagnelie */ 1659a2cdcdd2SPaul Dagnelie arc_buf_t *write_buf; 1660a2cdcdd2SPaul Dagnelie int payload_size; 16619c3fd121SMatthew Ahrens uint64_t bytes_read; /* bytes read from stream when record created */ 1662a2cdcdd2SPaul Dagnelie boolean_t eos_marker; /* Marks the end of the stream */ 1663a2cdcdd2SPaul Dagnelie bqueue_node_t node; 1664a2cdcdd2SPaul Dagnelie }; 1665a2cdcdd2SPaul Dagnelie 1666a2cdcdd2SPaul Dagnelie struct receive_writer_arg { 166798110f08SMatthew Ahrens objset_t *os; 16683b2aab18SMatthew Ahrens boolean_t byteswap; 1669a2cdcdd2SPaul Dagnelie bqueue_t q; 16709c3fd121SMatthew Ahrens 1671a2cdcdd2SPaul Dagnelie /* 1672a2cdcdd2SPaul Dagnelie * These three args are used to signal to the main thread that we're 1673a2cdcdd2SPaul Dagnelie * done. 1674a2cdcdd2SPaul Dagnelie */ 1675a2cdcdd2SPaul Dagnelie kmutex_t mutex; 1676a2cdcdd2SPaul Dagnelie kcondvar_t cv; 1677a2cdcdd2SPaul Dagnelie boolean_t done; 16789c3fd121SMatthew Ahrens 1679a2cdcdd2SPaul Dagnelie int err; 1680a2cdcdd2SPaul Dagnelie /* A map from guid to dataset to help handle dedup'd streams. */ 1681a2cdcdd2SPaul Dagnelie avl_tree_t *guid_to_ds_map; 16829c3fd121SMatthew Ahrens boolean_t resumable; 16839c3fd121SMatthew Ahrens uint64_t last_object, last_offset; 16849c3fd121SMatthew Ahrens uint64_t bytes_read; /* bytes read when current record created */ 1685a2cdcdd2SPaul Dagnelie }; 168698110f08SMatthew Ahrens 168768ecb2ecSPaul Dagnelie struct objlist { 168868ecb2ecSPaul Dagnelie list_t list; /* List of struct receive_objnode. */ 168968ecb2ecSPaul Dagnelie /* 169068ecb2ecSPaul Dagnelie * Last object looked up. Used to assert that objects are being looked 169168ecb2ecSPaul Dagnelie * up in ascending order. 169268ecb2ecSPaul Dagnelie */ 169368ecb2ecSPaul Dagnelie uint64_t last_lookup; 169468ecb2ecSPaul Dagnelie }; 169568ecb2ecSPaul Dagnelie 169668ecb2ecSPaul Dagnelie struct receive_objnode { 169768ecb2ecSPaul Dagnelie list_node_t node; 169868ecb2ecSPaul Dagnelie uint64_t object; 169968ecb2ecSPaul Dagnelie }; 170068ecb2ecSPaul Dagnelie 1701a2cdcdd2SPaul Dagnelie struct receive_arg { 1702a2cdcdd2SPaul Dagnelie objset_t *os; 1703a2cdcdd2SPaul Dagnelie vnode_t *vp; /* The vnode to read the stream from */ 1704a2cdcdd2SPaul Dagnelie uint64_t voff; /* The current offset in the stream */ 17059c3fd121SMatthew Ahrens uint64_t bytes_read; 1706a2cdcdd2SPaul Dagnelie /* 1707a2cdcdd2SPaul Dagnelie * A record that has had its payload read in, but hasn't yet been handed 1708a2cdcdd2SPaul Dagnelie * off to the worker thread. 1709a2cdcdd2SPaul Dagnelie */ 1710a2cdcdd2SPaul Dagnelie struct receive_record_arg *rrd; 1711a2cdcdd2SPaul Dagnelie /* A record that has had its header read in, but not its payload. */ 1712a2cdcdd2SPaul Dagnelie struct receive_record_arg *next_rrd; 17133cb34c60Sahrens zio_cksum_t cksum; 171498110f08SMatthew Ahrens zio_cksum_t prev_cksum; 1715a2cdcdd2SPaul Dagnelie int err; 1716a2cdcdd2SPaul Dagnelie boolean_t byteswap; 1717a2cdcdd2SPaul Dagnelie /* Sorted list of objects not to issue prefetches for. */ 171868ecb2ecSPaul Dagnelie struct objlist ignore_objlist; 17193cb34c60Sahrens }; 17203cb34c60Sahrens 17219e69d7d0SLori Alt typedef struct guid_map_entry { 17229e69d7d0SLori Alt uint64_t guid; 17239e69d7d0SLori Alt dsl_dataset_t *gme_ds; 17249e69d7d0SLori Alt avl_node_t avlnode; 17259e69d7d0SLori Alt } guid_map_entry_t; 17269e69d7d0SLori Alt 17279e69d7d0SLori Alt static int 17289e69d7d0SLori Alt guid_compare(const void *arg1, const void *arg2) 17299e69d7d0SLori Alt { 17309e69d7d0SLori Alt const guid_map_entry_t *gmep1 = arg1; 17319e69d7d0SLori Alt const guid_map_entry_t *gmep2 = arg2; 17329e69d7d0SLori Alt 17339e69d7d0SLori Alt if (gmep1->guid < gmep2->guid) 17349e69d7d0SLori Alt return (-1); 17359e69d7d0SLori Alt else if (gmep1->guid > gmep2->guid) 17369e69d7d0SLori Alt return (1); 17379e69d7d0SLori Alt return (0); 17389e69d7d0SLori Alt } 17399e69d7d0SLori Alt 1740c99e4bdcSChris Kirby static void 1741c99e4bdcSChris Kirby free_guid_map_onexit(void *arg) 1742c99e4bdcSChris Kirby { 1743c99e4bdcSChris Kirby avl_tree_t *ca = arg; 1744c99e4bdcSChris Kirby void *cookie = NULL; 1745c99e4bdcSChris Kirby guid_map_entry_t *gmep; 1746c99e4bdcSChris Kirby 1747c99e4bdcSChris Kirby while ((gmep = avl_destroy_nodes(ca, &cookie)) != NULL) { 17483b2aab18SMatthew Ahrens dsl_dataset_long_rele(gmep->gme_ds, gmep); 1749de8d9cffSMatthew Ahrens dsl_dataset_rele(gmep->gme_ds, gmep); 1750c99e4bdcSChris Kirby kmem_free(gmep, sizeof (guid_map_entry_t)); 1751c99e4bdcSChris Kirby } 1752c99e4bdcSChris Kirby avl_destroy(ca); 1753c99e4bdcSChris Kirby kmem_free(ca, sizeof (avl_tree_t)); 1754c99e4bdcSChris Kirby } 1755c99e4bdcSChris Kirby 175698110f08SMatthew Ahrens static int 1757a2cdcdd2SPaul Dagnelie receive_read(struct receive_arg *ra, int len, void *buf) 1758efb80947Sahrens { 17593cb34c60Sahrens int done = 0; 1760efb80947Sahrens 1761efb80947Sahrens /* some things will require 8-byte alignment, so everything must */ 1762fb09f5aaSMadhav Suresh ASSERT0(len % 8); 1763efb80947Sahrens 17643cb34c60Sahrens while (done < len) { 1765efb80947Sahrens ssize_t resid; 1766efb80947Sahrens 1767efb80947Sahrens ra->err = vn_rdwr(UIO_READ, ra->vp, 176898110f08SMatthew Ahrens (char *)buf + done, len - done, 1769efb80947Sahrens ra->voff, UIO_SYSSPACE, FAPPEND, 1770efb80947Sahrens RLIM64_INFINITY, CRED(), &resid); 1771efb80947Sahrens 17729c3fd121SMatthew Ahrens if (resid == len - done) { 17739c3fd121SMatthew Ahrens /* 17749c3fd121SMatthew Ahrens * Note: ECKSUM indicates that the receive 17759c3fd121SMatthew Ahrens * was interrupted and can potentially be resumed. 17769c3fd121SMatthew Ahrens */ 17779c3fd121SMatthew Ahrens ra->err = SET_ERROR(ECKSUM); 17789c3fd121SMatthew Ahrens } 17793cb34c60Sahrens ra->voff += len - done - resid; 17803cb34c60Sahrens done = len - resid; 17813b2aab18SMatthew Ahrens if (ra->err != 0) 178298110f08SMatthew Ahrens return (ra->err); 1783efb80947Sahrens } 1784efb80947Sahrens 17859c3fd121SMatthew Ahrens ra->bytes_read += len; 17869c3fd121SMatthew Ahrens 17873cb34c60Sahrens ASSERT3U(done, ==, len); 178898110f08SMatthew Ahrens return (0); 1789efb80947Sahrens } 1790efb80947Sahrens 1791efb80947Sahrens static void 179298110f08SMatthew Ahrens byteswap_record(dmu_replay_record_t *drr) 1793efb80947Sahrens { 1794efb80947Sahrens #define DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X)) 1795efb80947Sahrens #define DO32(X) (drr->drr_u.X = BSWAP_32(drr->drr_u.X)) 1796efb80947Sahrens drr->drr_type = BSWAP_32(drr->drr_type); 17973cb34c60Sahrens drr->drr_payloadlen = BSWAP_32(drr->drr_payloadlen); 179898110f08SMatthew Ahrens 1799efb80947Sahrens switch (drr->drr_type) { 1800efb80947Sahrens case DRR_BEGIN: 1801efb80947Sahrens DO64(drr_begin.drr_magic); 18029e69d7d0SLori Alt DO64(drr_begin.drr_versioninfo); 1803efb80947Sahrens DO64(drr_begin.drr_creation_time); 1804efb80947Sahrens DO32(drr_begin.drr_type); 18053cb34c60Sahrens DO32(drr_begin.drr_flags); 1806efb80947Sahrens DO64(drr_begin.drr_toguid); 1807efb80947Sahrens DO64(drr_begin.drr_fromguid); 1808efb80947Sahrens break; 1809efb80947Sahrens case DRR_OBJECT: 1810efb80947Sahrens DO64(drr_object.drr_object); 1811efb80947Sahrens DO32(drr_object.drr_type); 1812efb80947Sahrens DO32(drr_object.drr_bonustype); 1813efb80947Sahrens DO32(drr_object.drr_blksz); 1814efb80947Sahrens DO32(drr_object.drr_bonuslen); 18159e69d7d0SLori Alt DO64(drr_object.drr_toguid); 1816efb80947Sahrens break; 1817efb80947Sahrens case DRR_FREEOBJECTS: 1818efb80947Sahrens DO64(drr_freeobjects.drr_firstobj); 1819efb80947Sahrens DO64(drr_freeobjects.drr_numobjs); 18209e69d7d0SLori Alt DO64(drr_freeobjects.drr_toguid); 1821efb80947Sahrens break; 1822efb80947Sahrens case DRR_WRITE: 1823efb80947Sahrens DO64(drr_write.drr_object); 1824efb80947Sahrens DO32(drr_write.drr_type); 1825efb80947Sahrens DO64(drr_write.drr_offset); 1826efb80947Sahrens DO64(drr_write.drr_length); 18279e69d7d0SLori Alt DO64(drr_write.drr_toguid); 182898110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write.drr_key.ddk_cksum); 18298e714474SLori Alt DO64(drr_write.drr_key.ddk_prop); 18309e69d7d0SLori Alt break; 18319e69d7d0SLori Alt case DRR_WRITE_BYREF: 18329e69d7d0SLori Alt DO64(drr_write_byref.drr_object); 18339e69d7d0SLori Alt DO64(drr_write_byref.drr_offset); 18349e69d7d0SLori Alt DO64(drr_write_byref.drr_length); 18359e69d7d0SLori Alt DO64(drr_write_byref.drr_toguid); 18369e69d7d0SLori Alt DO64(drr_write_byref.drr_refguid); 18379e69d7d0SLori Alt DO64(drr_write_byref.drr_refobject); 18389e69d7d0SLori Alt DO64(drr_write_byref.drr_refoffset); 183998110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write_byref. 184098110f08SMatthew Ahrens drr_key.ddk_cksum); 18418e714474SLori Alt DO64(drr_write_byref.drr_key.ddk_prop); 1842efb80947Sahrens break; 18435d7b4d43SMatthew Ahrens case DRR_WRITE_EMBEDDED: 18445d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_object); 18455d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_offset); 18465d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_length); 18475d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_toguid); 18485d7b4d43SMatthew Ahrens DO32(drr_write_embedded.drr_lsize); 18495d7b4d43SMatthew Ahrens DO32(drr_write_embedded.drr_psize); 18505d7b4d43SMatthew Ahrens break; 1851efb80947Sahrens case DRR_FREE: 1852efb80947Sahrens DO64(drr_free.drr_object); 1853efb80947Sahrens DO64(drr_free.drr_offset); 1854efb80947Sahrens DO64(drr_free.drr_length); 18559e69d7d0SLori Alt DO64(drr_free.drr_toguid); 1856efb80947Sahrens break; 18570a586ceaSMark Shellenbaum case DRR_SPILL: 18580a586ceaSMark Shellenbaum DO64(drr_spill.drr_object); 18590a586ceaSMark Shellenbaum DO64(drr_spill.drr_length); 18600a586ceaSMark Shellenbaum DO64(drr_spill.drr_toguid); 18610a586ceaSMark Shellenbaum break; 1862efb80947Sahrens case DRR_END: 18639e69d7d0SLori Alt DO64(drr_end.drr_toguid); 186498110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_end.drr_checksum); 1865efb80947Sahrens break; 1866efb80947Sahrens } 186798110f08SMatthew Ahrens 186898110f08SMatthew Ahrens if (drr->drr_type != DRR_BEGIN) { 186998110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_checksum.drr_checksum); 187098110f08SMatthew Ahrens } 187198110f08SMatthew Ahrens 1872efb80947Sahrens #undef DO64 1873efb80947Sahrens #undef DO32 1874efb80947Sahrens } 1875efb80947Sahrens 1876e77d42eaSMatthew Ahrens static inline uint8_t 1877e77d42eaSMatthew Ahrens deduce_nblkptr(dmu_object_type_t bonus_type, uint64_t bonus_size) 1878e77d42eaSMatthew Ahrens { 1879e77d42eaSMatthew Ahrens if (bonus_type == DMU_OT_SA) { 1880e77d42eaSMatthew Ahrens return (1); 1881e77d42eaSMatthew Ahrens } else { 1882e77d42eaSMatthew Ahrens return (1 + 1883e77d42eaSMatthew Ahrens ((DN_MAX_BONUSLEN - bonus_size) >> SPA_BLKPTRSHIFT)); 1884e77d42eaSMatthew Ahrens } 1885e77d42eaSMatthew Ahrens } 1886e77d42eaSMatthew Ahrens 18879c3fd121SMatthew Ahrens static void 18889c3fd121SMatthew Ahrens save_resume_state(struct receive_writer_arg *rwa, 18899c3fd121SMatthew Ahrens uint64_t object, uint64_t offset, dmu_tx_t *tx) 18909c3fd121SMatthew Ahrens { 18919c3fd121SMatthew Ahrens int txgoff = dmu_tx_get_txg(tx) & TXG_MASK; 18929c3fd121SMatthew Ahrens 18939c3fd121SMatthew Ahrens if (!rwa->resumable) 18949c3fd121SMatthew Ahrens return; 18959c3fd121SMatthew Ahrens 18969c3fd121SMatthew Ahrens /* 18979c3fd121SMatthew Ahrens * We use ds_resume_bytes[] != 0 to indicate that we need to 18989c3fd121SMatthew Ahrens * update this on disk, so it must not be 0. 18999c3fd121SMatthew Ahrens */ 19009c3fd121SMatthew Ahrens ASSERT(rwa->bytes_read != 0); 19019c3fd121SMatthew Ahrens 19029c3fd121SMatthew Ahrens /* 19039c3fd121SMatthew Ahrens * We only resume from write records, which have a valid 19049c3fd121SMatthew Ahrens * (non-meta-dnode) object number. 19059c3fd121SMatthew Ahrens */ 19069c3fd121SMatthew Ahrens ASSERT(object != 0); 19079c3fd121SMatthew Ahrens 19089c3fd121SMatthew Ahrens /* 19099c3fd121SMatthew Ahrens * For resuming to work correctly, we must receive records in order, 19109c3fd121SMatthew Ahrens * sorted by object,offset. This is checked by the callers, but 19119c3fd121SMatthew Ahrens * assert it here for good measure. 19129c3fd121SMatthew Ahrens */ 19139c3fd121SMatthew Ahrens ASSERT3U(object, >=, rwa->os->os_dsl_dataset->ds_resume_object[txgoff]); 19149c3fd121SMatthew Ahrens ASSERT(object != rwa->os->os_dsl_dataset->ds_resume_object[txgoff] || 19159c3fd121SMatthew Ahrens offset >= rwa->os->os_dsl_dataset->ds_resume_offset[txgoff]); 19169c3fd121SMatthew Ahrens ASSERT3U(rwa->bytes_read, >=, 19179c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff]); 19189c3fd121SMatthew Ahrens 19199c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_object[txgoff] = object; 19209c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_offset[txgoff] = offset; 19219c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff] = rwa->bytes_read; 19229c3fd121SMatthew Ahrens } 19239c3fd121SMatthew Ahrens 1924efb80947Sahrens static int 1925a2cdcdd2SPaul Dagnelie receive_object(struct receive_writer_arg *rwa, struct drr_object *drro, 1926a2cdcdd2SPaul Dagnelie void *data) 1927efb80947Sahrens { 1928e77d42eaSMatthew Ahrens dmu_object_info_t doi; 1929efb80947Sahrens dmu_tx_t *tx; 1930e77d42eaSMatthew Ahrens uint64_t object; 1931e77d42eaSMatthew Ahrens int err; 1932efb80947Sahrens 1933efb80947Sahrens if (drro->drr_type == DMU_OT_NONE || 1934ad135b5dSChristopher Siden !DMU_OT_IS_VALID(drro->drr_type) || 1935ad135b5dSChristopher Siden !DMU_OT_IS_VALID(drro->drr_bonustype) || 19369e69d7d0SLori Alt drro->drr_checksumtype >= ZIO_CHECKSUM_FUNCTIONS || 1937efb80947Sahrens drro->drr_compress >= ZIO_COMPRESS_FUNCTIONS || 1938efb80947Sahrens P2PHASE(drro->drr_blksz, SPA_MINBLOCKSIZE) || 1939efb80947Sahrens drro->drr_blksz < SPA_MINBLOCKSIZE || 1940a2cdcdd2SPaul Dagnelie drro->drr_blksz > spa_maxblocksize(dmu_objset_spa(rwa->os)) || 1941efb80947Sahrens drro->drr_bonuslen > DN_MAX_BONUSLEN) { 1942be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 1943efb80947Sahrens } 1944efb80947Sahrens 1945a2cdcdd2SPaul Dagnelie err = dmu_object_info(rwa->os, drro->drr_object, &doi); 19462bf405a2SMark Maybee 19472bf405a2SMark Maybee if (err != 0 && err != ENOENT) 1948be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 1949e77d42eaSMatthew Ahrens object = err == 0 ? drro->drr_object : DMU_NEW_OBJECT; 19502bf405a2SMark Maybee 1951e77d42eaSMatthew Ahrens /* 1952e77d42eaSMatthew Ahrens * If we are losing blkptrs or changing the block size this must 1953e77d42eaSMatthew Ahrens * be a new file instance. We must clear out the previous file 1954e77d42eaSMatthew Ahrens * contents before we can change this type of metadata in the dnode. 1955e77d42eaSMatthew Ahrens */ 1956e77d42eaSMatthew Ahrens if (err == 0) { 1957e77d42eaSMatthew Ahrens int nblkptr; 1958e77d42eaSMatthew Ahrens 1959e77d42eaSMatthew Ahrens nblkptr = deduce_nblkptr(drro->drr_bonustype, 1960e77d42eaSMatthew Ahrens drro->drr_bonuslen); 1961e77d42eaSMatthew Ahrens 1962e77d42eaSMatthew Ahrens if (drro->drr_blksz != doi.doi_data_block_size || 1963e77d42eaSMatthew Ahrens nblkptr < doi.doi_nblkptr) { 1964a2cdcdd2SPaul Dagnelie err = dmu_free_long_range(rwa->os, drro->drr_object, 1965e77d42eaSMatthew Ahrens 0, DMU_OBJECT_END); 1966e77d42eaSMatthew Ahrens if (err != 0) 1967e77d42eaSMatthew Ahrens return (SET_ERROR(EINVAL)); 1968efb80947Sahrens } 1969e77d42eaSMatthew Ahrens } 1970e77d42eaSMatthew Ahrens 1971a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 1972e77d42eaSMatthew Ahrens dmu_tx_hold_bonus(tx, object); 1973e77d42eaSMatthew Ahrens err = dmu_tx_assign(tx, TXG_WAIT); 1974e77d42eaSMatthew Ahrens if (err != 0) { 1975e77d42eaSMatthew Ahrens dmu_tx_abort(tx); 1976e77d42eaSMatthew Ahrens return (err); 1977e77d42eaSMatthew Ahrens } 1978e77d42eaSMatthew Ahrens 1979e77d42eaSMatthew Ahrens if (object == DMU_NEW_OBJECT) { 1980e77d42eaSMatthew Ahrens /* currently free, want to be allocated */ 1981a2cdcdd2SPaul Dagnelie err = dmu_object_claim(rwa->os, drro->drr_object, 1982efb80947Sahrens drro->drr_type, drro->drr_blksz, 1983efb80947Sahrens drro->drr_bonustype, drro->drr_bonuslen, tx); 1984e77d42eaSMatthew Ahrens } else if (drro->drr_type != doi.doi_type || 1985e77d42eaSMatthew Ahrens drro->drr_blksz != doi.doi_data_block_size || 1986e77d42eaSMatthew Ahrens drro->drr_bonustype != doi.doi_bonus_type || 1987e77d42eaSMatthew Ahrens drro->drr_bonuslen != doi.doi_bonus_size) { 1988e77d42eaSMatthew Ahrens /* currently allocated, but with different properties */ 1989a2cdcdd2SPaul Dagnelie err = dmu_object_reclaim(rwa->os, drro->drr_object, 1990efb80947Sahrens drro->drr_type, drro->drr_blksz, 1991e77d42eaSMatthew Ahrens drro->drr_bonustype, drro->drr_bonuslen, tx); 1992efb80947Sahrens } 19933b2aab18SMatthew Ahrens if (err != 0) { 1994e77d42eaSMatthew Ahrens dmu_tx_commit(tx); 1995be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 19960a586ceaSMark Shellenbaum } 19972bf405a2SMark Maybee 1998a2cdcdd2SPaul Dagnelie dmu_object_set_checksum(rwa->os, drro->drr_object, 199998110f08SMatthew Ahrens drro->drr_checksumtype, tx); 2000a2cdcdd2SPaul Dagnelie dmu_object_set_compress(rwa->os, drro->drr_object, 200198110f08SMatthew Ahrens drro->drr_compress, tx); 2002efb80947Sahrens 2003adee0b6fSTim Haley if (data != NULL) { 2004efb80947Sahrens dmu_buf_t *db; 2005adee0b6fSTim Haley 2006a2cdcdd2SPaul Dagnelie VERIFY0(dmu_bonus_hold(rwa->os, drro->drr_object, FTAG, &db)); 2007efb80947Sahrens dmu_buf_will_dirty(db, tx); 2008efb80947Sahrens 20091934e92fSmaybee ASSERT3U(db->db_size, >=, drro->drr_bonuslen); 20101934e92fSmaybee bcopy(data, db->db_data, drro->drr_bonuslen); 2011a2cdcdd2SPaul Dagnelie if (rwa->byteswap) { 2012ad135b5dSChristopher Siden dmu_object_byteswap_t byteswap = 2013ad135b5dSChristopher Siden DMU_OT_BYTESWAP(drro->drr_bonustype); 2014ad135b5dSChristopher Siden dmu_ot_byteswap[byteswap].ob_func(db->db_data, 2015efb80947Sahrens drro->drr_bonuslen); 2016efb80947Sahrens } 2017efb80947Sahrens dmu_buf_rele(db, FTAG); 2018efb80947Sahrens } 2019efb80947Sahrens dmu_tx_commit(tx); 20209c3fd121SMatthew Ahrens 2021efb80947Sahrens return (0); 2022efb80947Sahrens } 2023efb80947Sahrens 2024efb80947Sahrens /* ARGSUSED */ 2025efb80947Sahrens static int 2026a2cdcdd2SPaul Dagnelie receive_freeobjects(struct receive_writer_arg *rwa, 2027efb80947Sahrens struct drr_freeobjects *drrfo) 2028efb80947Sahrens { 2029efb80947Sahrens uint64_t obj; 203068ecb2ecSPaul Dagnelie int next_err = 0; 2031efb80947Sahrens 2032efb80947Sahrens if (drrfo->drr_firstobj + drrfo->drr_numobjs < drrfo->drr_firstobj) 2033be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2034efb80947Sahrens 2035efb80947Sahrens for (obj = drrfo->drr_firstobj; 203668ecb2ecSPaul Dagnelie obj < drrfo->drr_firstobj + drrfo->drr_numobjs && next_err == 0; 203768ecb2ecSPaul Dagnelie next_err = dmu_object_next(rwa->os, &obj, FALSE, 0)) { 2038efb80947Sahrens int err; 2039efb80947Sahrens 2040a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, obj, NULL) != 0) 2041efb80947Sahrens continue; 2042efb80947Sahrens 2043a2cdcdd2SPaul Dagnelie err = dmu_free_long_object(rwa->os, obj); 20443b2aab18SMatthew Ahrens if (err != 0) 2045efb80947Sahrens return (err); 2046efb80947Sahrens } 204768ecb2ecSPaul Dagnelie if (next_err != ESRCH) 204868ecb2ecSPaul Dagnelie return (next_err); 2049efb80947Sahrens return (0); 2050efb80947Sahrens } 2051efb80947Sahrens 2052efb80947Sahrens static int 2053a2cdcdd2SPaul Dagnelie receive_write(struct receive_writer_arg *rwa, struct drr_write *drrw, 2054a2cdcdd2SPaul Dagnelie arc_buf_t *abuf) 2055efb80947Sahrens { 2056efb80947Sahrens dmu_tx_t *tx; 2057efb80947Sahrens int err; 2058efb80947Sahrens 2059efb80947Sahrens if (drrw->drr_offset + drrw->drr_length < drrw->drr_offset || 2060ad135b5dSChristopher Siden !DMU_OT_IS_VALID(drrw->drr_type)) 2061be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2062efb80947Sahrens 20639c3fd121SMatthew Ahrens /* 20649c3fd121SMatthew Ahrens * For resuming to work, records must be in increasing order 20659c3fd121SMatthew Ahrens * by (object, offset). 20669c3fd121SMatthew Ahrens */ 20679c3fd121SMatthew Ahrens if (drrw->drr_object < rwa->last_object || 20689c3fd121SMatthew Ahrens (drrw->drr_object == rwa->last_object && 20699c3fd121SMatthew Ahrens drrw->drr_offset < rwa->last_offset)) { 20709c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 20719c3fd121SMatthew Ahrens } 20729c3fd121SMatthew Ahrens rwa->last_object = drrw->drr_object; 20739c3fd121SMatthew Ahrens rwa->last_offset = drrw->drr_offset; 20749c3fd121SMatthew Ahrens 2075a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, drrw->drr_object, NULL) != 0) 20768a904709SMatthew Ahrens return (SET_ERROR(EINVAL)); 20778a904709SMatthew Ahrens 2078a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 2079efb80947Sahrens 2080efb80947Sahrens dmu_tx_hold_write(tx, drrw->drr_object, 2081efb80947Sahrens drrw->drr_offset, drrw->drr_length); 2082efb80947Sahrens err = dmu_tx_assign(tx, TXG_WAIT); 20833b2aab18SMatthew Ahrens if (err != 0) { 2084efb80947Sahrens dmu_tx_abort(tx); 2085efb80947Sahrens return (err); 2086efb80947Sahrens } 2087a2cdcdd2SPaul Dagnelie if (rwa->byteswap) { 2088ad135b5dSChristopher Siden dmu_object_byteswap_t byteswap = 2089ad135b5dSChristopher Siden DMU_OT_BYTESWAP(drrw->drr_type); 209098110f08SMatthew Ahrens dmu_ot_byteswap[byteswap].ob_func(abuf->b_data, 209198110f08SMatthew Ahrens drrw->drr_length); 2092ad135b5dSChristopher Siden } 209398110f08SMatthew Ahrens 209498110f08SMatthew Ahrens dmu_buf_t *bonus; 2095a2cdcdd2SPaul Dagnelie if (dmu_bonus_hold(rwa->os, drrw->drr_object, FTAG, &bonus) != 0) 209698110f08SMatthew Ahrens return (SET_ERROR(EINVAL)); 20978a904709SMatthew Ahrens dmu_assign_arcbuf(bonus, drrw->drr_offset, abuf, tx); 20989c3fd121SMatthew Ahrens 20999c3fd121SMatthew Ahrens /* 21009c3fd121SMatthew Ahrens * Note: If the receive fails, we want the resume stream to start 21019c3fd121SMatthew Ahrens * with the same record that we last successfully received (as opposed 21029c3fd121SMatthew Ahrens * to the next record), so that we can verify that we are 21039c3fd121SMatthew Ahrens * resuming from the correct location. 21049c3fd121SMatthew Ahrens */ 21059c3fd121SMatthew Ahrens save_resume_state(rwa, drrw->drr_object, drrw->drr_offset, tx); 2106efb80947Sahrens dmu_tx_commit(tx); 21078a904709SMatthew Ahrens dmu_buf_rele(bonus, FTAG); 21089c3fd121SMatthew Ahrens 2109efb80947Sahrens return (0); 2110efb80947Sahrens } 2111efb80947Sahrens 21129e69d7d0SLori Alt /* 21139e69d7d0SLori Alt * Handle a DRR_WRITE_BYREF record. This record is used in dedup'ed 21149e69d7d0SLori Alt * streams to refer to a copy of the data that is already on the 21159e69d7d0SLori Alt * system because it came in earlier in the stream. This function 21169e69d7d0SLori Alt * finds the earlier copy of the data, and uses that copy instead of 21179e69d7d0SLori Alt * data from the stream to fulfill this write. 21189e69d7d0SLori Alt */ 21199e69d7d0SLori Alt static int 2120a2cdcdd2SPaul Dagnelie receive_write_byref(struct receive_writer_arg *rwa, 2121a2cdcdd2SPaul Dagnelie struct drr_write_byref *drrwbr) 21229e69d7d0SLori Alt { 21239e69d7d0SLori Alt dmu_tx_t *tx; 21249e69d7d0SLori Alt int err; 21259e69d7d0SLori Alt guid_map_entry_t gmesrch; 21269e69d7d0SLori Alt guid_map_entry_t *gmep; 21275d7b4d43SMatthew Ahrens avl_index_t where; 21289e69d7d0SLori Alt objset_t *ref_os = NULL; 21299e69d7d0SLori Alt dmu_buf_t *dbp; 21309e69d7d0SLori Alt 21319e69d7d0SLori Alt if (drrwbr->drr_offset + drrwbr->drr_length < drrwbr->drr_offset) 2132be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 21339e69d7d0SLori Alt 21349e69d7d0SLori Alt /* 21359e69d7d0SLori Alt * If the GUID of the referenced dataset is different from the 21369e69d7d0SLori Alt * GUID of the target dataset, find the referenced dataset. 21379e69d7d0SLori Alt */ 21389e69d7d0SLori Alt if (drrwbr->drr_toguid != drrwbr->drr_refguid) { 21399e69d7d0SLori Alt gmesrch.guid = drrwbr->drr_refguid; 2140a2cdcdd2SPaul Dagnelie if ((gmep = avl_find(rwa->guid_to_ds_map, &gmesrch, 21419e69d7d0SLori Alt &where)) == NULL) { 2142be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 21439e69d7d0SLori Alt } 21449e69d7d0SLori Alt if (dmu_objset_from_ds(gmep->gme_ds, &ref_os)) 2145be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 21469e69d7d0SLori Alt } else { 2147a2cdcdd2SPaul Dagnelie ref_os = rwa->os; 21489e69d7d0SLori Alt } 21499e69d7d0SLori Alt 21505d7b4d43SMatthew Ahrens err = dmu_buf_hold(ref_os, drrwbr->drr_refobject, 21515d7b4d43SMatthew Ahrens drrwbr->drr_refoffset, FTAG, &dbp, DMU_READ_PREFETCH); 21525d7b4d43SMatthew Ahrens if (err != 0) 21539e69d7d0SLori Alt return (err); 21549e69d7d0SLori Alt 2155a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 21569e69d7d0SLori Alt 21579e69d7d0SLori Alt dmu_tx_hold_write(tx, drrwbr->drr_object, 21589e69d7d0SLori Alt drrwbr->drr_offset, drrwbr->drr_length); 21599e69d7d0SLori Alt err = dmu_tx_assign(tx, TXG_WAIT); 21603b2aab18SMatthew Ahrens if (err != 0) { 21619e69d7d0SLori Alt dmu_tx_abort(tx); 21629e69d7d0SLori Alt return (err); 21639e69d7d0SLori Alt } 2164a2cdcdd2SPaul Dagnelie dmu_write(rwa->os, drrwbr->drr_object, 21659e69d7d0SLori Alt drrwbr->drr_offset, drrwbr->drr_length, dbp->db_data, tx); 21669e69d7d0SLori Alt dmu_buf_rele(dbp, FTAG); 21679c3fd121SMatthew Ahrens 21689c3fd121SMatthew Ahrens /* See comment in restore_write. */ 21699c3fd121SMatthew Ahrens save_resume_state(rwa, drrwbr->drr_object, drrwbr->drr_offset, tx); 21709e69d7d0SLori Alt dmu_tx_commit(tx); 21719e69d7d0SLori Alt return (0); 21729e69d7d0SLori Alt } 21739e69d7d0SLori Alt 21745d7b4d43SMatthew Ahrens static int 2175a2cdcdd2SPaul Dagnelie receive_write_embedded(struct receive_writer_arg *rwa, 21769c3fd121SMatthew Ahrens struct drr_write_embedded *drrwe, void *data) 21775d7b4d43SMatthew Ahrens { 21785d7b4d43SMatthew Ahrens dmu_tx_t *tx; 21795d7b4d43SMatthew Ahrens int err; 21805d7b4d43SMatthew Ahrens 21819c3fd121SMatthew Ahrens if (drrwe->drr_offset + drrwe->drr_length < drrwe->drr_offset) 21825d7b4d43SMatthew Ahrens return (EINVAL); 21835d7b4d43SMatthew Ahrens 21849c3fd121SMatthew Ahrens if (drrwe->drr_psize > BPE_PAYLOAD_SIZE) 21855d7b4d43SMatthew Ahrens return (EINVAL); 21865d7b4d43SMatthew Ahrens 21879c3fd121SMatthew Ahrens if (drrwe->drr_etype >= NUM_BP_EMBEDDED_TYPES) 21885d7b4d43SMatthew Ahrens return (EINVAL); 21899c3fd121SMatthew Ahrens if (drrwe->drr_compression >= ZIO_COMPRESS_FUNCTIONS) 21905d7b4d43SMatthew Ahrens return (EINVAL); 21915d7b4d43SMatthew Ahrens 2192a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 21935d7b4d43SMatthew Ahrens 21949c3fd121SMatthew Ahrens dmu_tx_hold_write(tx, drrwe->drr_object, 21959c3fd121SMatthew Ahrens drrwe->drr_offset, drrwe->drr_length); 21965d7b4d43SMatthew Ahrens err = dmu_tx_assign(tx, TXG_WAIT); 21975d7b4d43SMatthew Ahrens if (err != 0) { 21985d7b4d43SMatthew Ahrens dmu_tx_abort(tx); 21995d7b4d43SMatthew Ahrens return (err); 22005d7b4d43SMatthew Ahrens } 22015d7b4d43SMatthew Ahrens 22029c3fd121SMatthew Ahrens dmu_write_embedded(rwa->os, drrwe->drr_object, 22039c3fd121SMatthew Ahrens drrwe->drr_offset, data, drrwe->drr_etype, 22049c3fd121SMatthew Ahrens drrwe->drr_compression, drrwe->drr_lsize, drrwe->drr_psize, 2205a2cdcdd2SPaul Dagnelie rwa->byteswap ^ ZFS_HOST_BYTEORDER, tx); 22065d7b4d43SMatthew Ahrens 22079c3fd121SMatthew Ahrens /* See comment in restore_write. */ 22089c3fd121SMatthew Ahrens save_resume_state(rwa, drrwe->drr_object, drrwe->drr_offset, tx); 22095d7b4d43SMatthew Ahrens dmu_tx_commit(tx); 22105d7b4d43SMatthew Ahrens return (0); 22115d7b4d43SMatthew Ahrens } 22125d7b4d43SMatthew Ahrens 22130a586ceaSMark Shellenbaum static int 2214a2cdcdd2SPaul Dagnelie receive_spill(struct receive_writer_arg *rwa, struct drr_spill *drrs, 2215a2cdcdd2SPaul Dagnelie void *data) 22160a586ceaSMark Shellenbaum { 22170a586ceaSMark Shellenbaum dmu_tx_t *tx; 22180a586ceaSMark Shellenbaum dmu_buf_t *db, *db_spill; 22190a586ceaSMark Shellenbaum int err; 22200a586ceaSMark Shellenbaum 22210a586ceaSMark Shellenbaum if (drrs->drr_length < SPA_MINBLOCKSIZE || 2222a2cdcdd2SPaul Dagnelie drrs->drr_length > spa_maxblocksize(dmu_objset_spa(rwa->os))) 2223be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 22240a586ceaSMark Shellenbaum 2225a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, drrs->drr_object, NULL) != 0) 2226be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 22270a586ceaSMark Shellenbaum 2228a2cdcdd2SPaul Dagnelie VERIFY0(dmu_bonus_hold(rwa->os, drrs->drr_object, FTAG, &db)); 22290a586ceaSMark Shellenbaum if ((err = dmu_spill_hold_by_bonus(db, FTAG, &db_spill)) != 0) { 22300a586ceaSMark Shellenbaum dmu_buf_rele(db, FTAG); 22310a586ceaSMark Shellenbaum return (err); 22320a586ceaSMark Shellenbaum } 22330a586ceaSMark Shellenbaum 2234a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 22350a586ceaSMark Shellenbaum 22360a586ceaSMark Shellenbaum dmu_tx_hold_spill(tx, db->db_object); 22370a586ceaSMark Shellenbaum 22380a586ceaSMark Shellenbaum err = dmu_tx_assign(tx, TXG_WAIT); 22393b2aab18SMatthew Ahrens if (err != 0) { 22400a586ceaSMark Shellenbaum dmu_buf_rele(db, FTAG); 22410a586ceaSMark Shellenbaum dmu_buf_rele(db_spill, FTAG); 22420a586ceaSMark Shellenbaum dmu_tx_abort(tx); 22430a586ceaSMark Shellenbaum return (err); 22440a586ceaSMark Shellenbaum } 22450a586ceaSMark Shellenbaum dmu_buf_will_dirty(db_spill, tx); 22460a586ceaSMark Shellenbaum 22470a586ceaSMark Shellenbaum if (db_spill->db_size < drrs->drr_length) 22480a586ceaSMark Shellenbaum VERIFY(0 == dbuf_spill_set_blksz(db_spill, 22490a586ceaSMark Shellenbaum drrs->drr_length, tx)); 22500a586ceaSMark Shellenbaum bcopy(data, db_spill->db_data, drrs->drr_length); 22510a586ceaSMark Shellenbaum 22520a586ceaSMark Shellenbaum dmu_buf_rele(db, FTAG); 22530a586ceaSMark Shellenbaum dmu_buf_rele(db_spill, FTAG); 22540a586ceaSMark Shellenbaum 22550a586ceaSMark Shellenbaum dmu_tx_commit(tx); 22560a586ceaSMark Shellenbaum return (0); 22570a586ceaSMark Shellenbaum } 22580a586ceaSMark Shellenbaum 2259efb80947Sahrens /* ARGSUSED */ 2260efb80947Sahrens static int 2261a2cdcdd2SPaul Dagnelie receive_free(struct receive_writer_arg *rwa, struct drr_free *drrf) 2262efb80947Sahrens { 2263efb80947Sahrens int err; 2264efb80947Sahrens 2265efb80947Sahrens if (drrf->drr_length != -1ULL && 2266efb80947Sahrens drrf->drr_offset + drrf->drr_length < drrf->drr_offset) 2267be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2268efb80947Sahrens 2269a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, drrf->drr_object, NULL) != 0) 2270be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2271efb80947Sahrens 2272a2cdcdd2SPaul Dagnelie err = dmu_free_long_range(rwa->os, drrf->drr_object, 2273efb80947Sahrens drrf->drr_offset, drrf->drr_length); 2274a2cdcdd2SPaul Dagnelie 2275efb80947Sahrens return (err); 2276efb80947Sahrens } 2277efb80947Sahrens 22783b2aab18SMatthew Ahrens /* used to destroy the drc_ds on error */ 22793b2aab18SMatthew Ahrens static void 22803b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(dmu_recv_cookie_t *drc) 22813b2aab18SMatthew Ahrens { 22829c3fd121SMatthew Ahrens if (drc->drc_resumable) { 22839c3fd121SMatthew Ahrens /* wait for our resume state to be written to disk */ 22849c3fd121SMatthew Ahrens txg_wait_synced(drc->drc_ds->ds_dir->dd_pool, 0); 22859c3fd121SMatthew Ahrens dsl_dataset_disown(drc->drc_ds, dmu_recv_tag); 22869c3fd121SMatthew Ahrens } else { 22879c3fd121SMatthew Ahrens char name[MAXNAMELEN]; 22889c3fd121SMatthew Ahrens dsl_dataset_name(drc->drc_ds, name); 22899c3fd121SMatthew Ahrens dsl_dataset_disown(drc->drc_ds, dmu_recv_tag); 22909c3fd121SMatthew Ahrens (void) dsl_destroy_head(name); 22919c3fd121SMatthew Ahrens } 22923b2aab18SMatthew Ahrens } 22933b2aab18SMatthew Ahrens 229498110f08SMatthew Ahrens static void 2295a2cdcdd2SPaul Dagnelie receive_cksum(struct receive_arg *ra, int len, void *buf) 229698110f08SMatthew Ahrens { 229798110f08SMatthew Ahrens if (ra->byteswap) { 229898110f08SMatthew Ahrens fletcher_4_incremental_byteswap(buf, len, &ra->cksum); 229998110f08SMatthew Ahrens } else { 230098110f08SMatthew Ahrens fletcher_4_incremental_native(buf, len, &ra->cksum); 230198110f08SMatthew Ahrens } 230298110f08SMatthew Ahrens } 230398110f08SMatthew Ahrens 230498110f08SMatthew Ahrens /* 2305a2cdcdd2SPaul Dagnelie * Read the payload into a buffer of size len, and update the current record's 2306a2cdcdd2SPaul Dagnelie * payload field. 2307a2cdcdd2SPaul Dagnelie * Allocate ra->next_rrd and read the next record's header into 2308a2cdcdd2SPaul Dagnelie * ra->next_rrd->header. 230998110f08SMatthew Ahrens * Verify checksum of payload and next record. 231098110f08SMatthew Ahrens */ 231198110f08SMatthew Ahrens static int 2312a2cdcdd2SPaul Dagnelie receive_read_payload_and_next_header(struct receive_arg *ra, int len, void *buf) 231398110f08SMatthew Ahrens { 231498110f08SMatthew Ahrens int err; 231598110f08SMatthew Ahrens 231698110f08SMatthew Ahrens if (len != 0) { 2317a2cdcdd2SPaul Dagnelie ASSERT3U(len, <=, SPA_MAXBLOCKSIZE); 23189c3fd121SMatthew Ahrens err = receive_read(ra, len, buf); 231998110f08SMatthew Ahrens if (err != 0) 232098110f08SMatthew Ahrens return (err); 23219c3fd121SMatthew Ahrens receive_cksum(ra, len, buf); 23229c3fd121SMatthew Ahrens 23239c3fd121SMatthew Ahrens /* note: rrd is NULL when reading the begin record's payload */ 23249c3fd121SMatthew Ahrens if (ra->rrd != NULL) { 23259c3fd121SMatthew Ahrens ra->rrd->payload = buf; 23269c3fd121SMatthew Ahrens ra->rrd->payload_size = len; 23279c3fd121SMatthew Ahrens ra->rrd->bytes_read = ra->bytes_read; 23289c3fd121SMatthew Ahrens } 232998110f08SMatthew Ahrens } 233098110f08SMatthew Ahrens 233198110f08SMatthew Ahrens ra->prev_cksum = ra->cksum; 233298110f08SMatthew Ahrens 2333a2cdcdd2SPaul Dagnelie ra->next_rrd = kmem_zalloc(sizeof (*ra->next_rrd), KM_SLEEP); 2334a2cdcdd2SPaul Dagnelie err = receive_read(ra, sizeof (ra->next_rrd->header), 2335a2cdcdd2SPaul Dagnelie &ra->next_rrd->header); 23369c3fd121SMatthew Ahrens ra->next_rrd->bytes_read = ra->bytes_read; 2337a2cdcdd2SPaul Dagnelie if (err != 0) { 2338a2cdcdd2SPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 2339a2cdcdd2SPaul Dagnelie ra->next_rrd = NULL; 234098110f08SMatthew Ahrens return (err); 2341a2cdcdd2SPaul Dagnelie } 2342a2cdcdd2SPaul Dagnelie if (ra->next_rrd->header.drr_type == DRR_BEGIN) { 2343a2cdcdd2SPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 2344a2cdcdd2SPaul Dagnelie ra->next_rrd = NULL; 234598110f08SMatthew Ahrens return (SET_ERROR(EINVAL)); 2346a2cdcdd2SPaul Dagnelie } 234798110f08SMatthew Ahrens 234898110f08SMatthew Ahrens /* 234998110f08SMatthew Ahrens * Note: checksum is of everything up to but not including the 235098110f08SMatthew Ahrens * checksum itself. 235198110f08SMatthew Ahrens */ 235298110f08SMatthew Ahrens ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 235398110f08SMatthew Ahrens ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); 2354a2cdcdd2SPaul Dagnelie receive_cksum(ra, 235598110f08SMatthew Ahrens offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 2356a2cdcdd2SPaul Dagnelie &ra->next_rrd->header); 235798110f08SMatthew Ahrens 2358a2cdcdd2SPaul Dagnelie zio_cksum_t cksum_orig = 2359a2cdcdd2SPaul Dagnelie ra->next_rrd->header.drr_u.drr_checksum.drr_checksum; 2360a2cdcdd2SPaul Dagnelie zio_cksum_t *cksump = 2361a2cdcdd2SPaul Dagnelie &ra->next_rrd->header.drr_u.drr_checksum.drr_checksum; 236298110f08SMatthew Ahrens 236398110f08SMatthew Ahrens if (ra->byteswap) 2364a2cdcdd2SPaul Dagnelie byteswap_record(&ra->next_rrd->header); 236598110f08SMatthew Ahrens 236698110f08SMatthew Ahrens if ((!ZIO_CHECKSUM_IS_ZERO(cksump)) && 2367a2cdcdd2SPaul Dagnelie !ZIO_CHECKSUM_EQUAL(ra->cksum, *cksump)) { 2368a2cdcdd2SPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 2369a2cdcdd2SPaul Dagnelie ra->next_rrd = NULL; 237098110f08SMatthew Ahrens return (SET_ERROR(ECKSUM)); 2371a2cdcdd2SPaul Dagnelie } 237298110f08SMatthew Ahrens 2373a2cdcdd2SPaul Dagnelie receive_cksum(ra, sizeof (cksum_orig), &cksum_orig); 237498110f08SMatthew Ahrens 237598110f08SMatthew Ahrens return (0); 237698110f08SMatthew Ahrens } 237798110f08SMatthew Ahrens 237868ecb2ecSPaul Dagnelie static void 237968ecb2ecSPaul Dagnelie objlist_create(struct objlist *list) 238068ecb2ecSPaul Dagnelie { 238168ecb2ecSPaul Dagnelie list_create(&list->list, sizeof (struct receive_objnode), 238268ecb2ecSPaul Dagnelie offsetof(struct receive_objnode, node)); 238368ecb2ecSPaul Dagnelie list->last_lookup = 0; 238468ecb2ecSPaul Dagnelie } 238568ecb2ecSPaul Dagnelie 238668ecb2ecSPaul Dagnelie static void 238768ecb2ecSPaul Dagnelie objlist_destroy(struct objlist *list) 238868ecb2ecSPaul Dagnelie { 238968ecb2ecSPaul Dagnelie for (struct receive_objnode *n = list_remove_head(&list->list); 239068ecb2ecSPaul Dagnelie n != NULL; n = list_remove_head(&list->list)) { 239168ecb2ecSPaul Dagnelie kmem_free(n, sizeof (*n)); 239268ecb2ecSPaul Dagnelie } 239368ecb2ecSPaul Dagnelie list_destroy(&list->list); 239468ecb2ecSPaul Dagnelie } 239568ecb2ecSPaul Dagnelie 239668ecb2ecSPaul Dagnelie /* 239768ecb2ecSPaul Dagnelie * This function looks through the objlist to see if the specified object number 239868ecb2ecSPaul Dagnelie * is contained in the objlist. In the process, it will remove all object 239968ecb2ecSPaul Dagnelie * numbers in the list that are smaller than the specified object number. Thus, 240068ecb2ecSPaul Dagnelie * any lookup of an object number smaller than a previously looked up object 240168ecb2ecSPaul Dagnelie * number will always return false; therefore, all lookups should be done in 240268ecb2ecSPaul Dagnelie * ascending order. 240368ecb2ecSPaul Dagnelie */ 240468ecb2ecSPaul Dagnelie static boolean_t 240568ecb2ecSPaul Dagnelie objlist_exists(struct objlist *list, uint64_t object) 240668ecb2ecSPaul Dagnelie { 240768ecb2ecSPaul Dagnelie struct receive_objnode *node = list_head(&list->list); 240868ecb2ecSPaul Dagnelie ASSERT3U(object, >=, list->last_lookup); 240968ecb2ecSPaul Dagnelie list->last_lookup = object; 241068ecb2ecSPaul Dagnelie while (node != NULL && node->object < object) { 241168ecb2ecSPaul Dagnelie VERIFY3P(node, ==, list_remove_head(&list->list)); 241268ecb2ecSPaul Dagnelie kmem_free(node, sizeof (*node)); 241368ecb2ecSPaul Dagnelie node = list_head(&list->list); 241468ecb2ecSPaul Dagnelie } 241568ecb2ecSPaul Dagnelie return (node != NULL && node->object == object); 241668ecb2ecSPaul Dagnelie } 241768ecb2ecSPaul Dagnelie 241868ecb2ecSPaul Dagnelie /* 241968ecb2ecSPaul Dagnelie * The objlist is a list of object numbers stored in ascending order. However, 242068ecb2ecSPaul Dagnelie * the insertion of new object numbers does not seek out the correct location to 242168ecb2ecSPaul Dagnelie * store a new object number; instead, it appends it to the list for simplicity. 242268ecb2ecSPaul Dagnelie * Thus, any users must take care to only insert new object numbers in ascending 242368ecb2ecSPaul Dagnelie * order. 242468ecb2ecSPaul Dagnelie */ 242568ecb2ecSPaul Dagnelie static void 242668ecb2ecSPaul Dagnelie objlist_insert(struct objlist *list, uint64_t object) 242768ecb2ecSPaul Dagnelie { 242868ecb2ecSPaul Dagnelie struct receive_objnode *node = kmem_zalloc(sizeof (*node), KM_SLEEP); 242968ecb2ecSPaul Dagnelie node->object = object; 243068ecb2ecSPaul Dagnelie #ifdef ZFS_DEBUG 243168ecb2ecSPaul Dagnelie struct receive_objnode *last_object = list_tail(&list->list); 243268ecb2ecSPaul Dagnelie uint64_t last_objnum = (last_object != NULL ? last_object->object : 0); 243368ecb2ecSPaul Dagnelie ASSERT3U(node->object, >, last_objnum); 243468ecb2ecSPaul Dagnelie #endif 243568ecb2ecSPaul Dagnelie list_insert_tail(&list->list, node); 243668ecb2ecSPaul Dagnelie } 243768ecb2ecSPaul Dagnelie 2438a2cdcdd2SPaul Dagnelie /* 2439a2cdcdd2SPaul Dagnelie * Issue the prefetch reads for any necessary indirect blocks. 2440a2cdcdd2SPaul Dagnelie * 2441a2cdcdd2SPaul Dagnelie * We use the object ignore list to tell us whether or not to issue prefetches 2442a2cdcdd2SPaul Dagnelie * for a given object. We do this for both correctness (in case the blocksize 2443a2cdcdd2SPaul Dagnelie * of an object has changed) and performance (if the object doesn't exist, don't 2444a2cdcdd2SPaul Dagnelie * needlessly try to issue prefetches). We also trim the list as we go through 2445a2cdcdd2SPaul Dagnelie * the stream to prevent it from growing to an unbounded size. 2446a2cdcdd2SPaul Dagnelie * 2447a2cdcdd2SPaul Dagnelie * The object numbers within will always be in sorted order, and any write 2448a2cdcdd2SPaul Dagnelie * records we see will also be in sorted order, but they're not sorted with 2449a2cdcdd2SPaul Dagnelie * respect to each other (i.e. we can get several object records before 2450a2cdcdd2SPaul Dagnelie * receiving each object's write records). As a result, once we've reached a 2451a2cdcdd2SPaul Dagnelie * given object number, we can safely remove any reference to lower object 2452a2cdcdd2SPaul Dagnelie * numbers in the ignore list. In practice, we receive up to 32 object records 2453a2cdcdd2SPaul Dagnelie * before receiving write records, so the list can have up to 32 nodes in it. 2454a2cdcdd2SPaul Dagnelie */ 2455a2cdcdd2SPaul Dagnelie /* ARGSUSED */ 2456a2cdcdd2SPaul Dagnelie static void 2457a2cdcdd2SPaul Dagnelie receive_read_prefetch(struct receive_arg *ra, 2458a2cdcdd2SPaul Dagnelie uint64_t object, uint64_t offset, uint64_t length) 2459a2cdcdd2SPaul Dagnelie { 246068ecb2ecSPaul Dagnelie if (!objlist_exists(&ra->ignore_objlist, object)) { 2461a2cdcdd2SPaul Dagnelie dmu_prefetch(ra->os, object, 1, offset, length, 2462a2cdcdd2SPaul Dagnelie ZIO_PRIORITY_SYNC_READ); 2463a2cdcdd2SPaul Dagnelie } 2464a2cdcdd2SPaul Dagnelie } 2465a2cdcdd2SPaul Dagnelie 2466a2cdcdd2SPaul Dagnelie /* 2467a2cdcdd2SPaul Dagnelie * Read records off the stream, issuing any necessary prefetches. 2468a2cdcdd2SPaul Dagnelie */ 246998110f08SMatthew Ahrens static int 2470a2cdcdd2SPaul Dagnelie receive_read_record(struct receive_arg *ra) 247198110f08SMatthew Ahrens { 247298110f08SMatthew Ahrens int err; 247398110f08SMatthew Ahrens 2474a2cdcdd2SPaul Dagnelie switch (ra->rrd->header.drr_type) { 247598110f08SMatthew Ahrens case DRR_OBJECT: 247698110f08SMatthew Ahrens { 2477a2cdcdd2SPaul Dagnelie struct drr_object *drro = &ra->rrd->header.drr_u.drr_object; 2478a2cdcdd2SPaul Dagnelie uint32_t size = P2ROUNDUP(drro->drr_bonuslen, 8); 2479a2cdcdd2SPaul Dagnelie void *buf = kmem_zalloc(size, KM_SLEEP); 2480a2cdcdd2SPaul Dagnelie dmu_object_info_t doi; 2481a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, size, buf); 2482a2cdcdd2SPaul Dagnelie if (err != 0) { 2483a2cdcdd2SPaul Dagnelie kmem_free(buf, size); 248498110f08SMatthew Ahrens return (err); 2485a2cdcdd2SPaul Dagnelie } 2486a2cdcdd2SPaul Dagnelie err = dmu_object_info(ra->os, drro->drr_object, &doi); 2487a2cdcdd2SPaul Dagnelie /* 2488a2cdcdd2SPaul Dagnelie * See receive_read_prefetch for an explanation why we're 2489a2cdcdd2SPaul Dagnelie * storing this object in the ignore_obj_list. 2490a2cdcdd2SPaul Dagnelie */ 2491a2cdcdd2SPaul Dagnelie if (err == ENOENT || 2492a2cdcdd2SPaul Dagnelie (err == 0 && doi.doi_data_block_size != drro->drr_blksz)) { 249368ecb2ecSPaul Dagnelie objlist_insert(&ra->ignore_objlist, drro->drr_object); 2494a2cdcdd2SPaul Dagnelie err = 0; 2495a2cdcdd2SPaul Dagnelie } 2496a2cdcdd2SPaul Dagnelie return (err); 249798110f08SMatthew Ahrens } 249898110f08SMatthew Ahrens case DRR_FREEOBJECTS: 249998110f08SMatthew Ahrens { 2500a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 2501a2cdcdd2SPaul Dagnelie return (err); 250298110f08SMatthew Ahrens } 250398110f08SMatthew Ahrens case DRR_WRITE: 250498110f08SMatthew Ahrens { 2505a2cdcdd2SPaul Dagnelie struct drr_write *drrw = &ra->rrd->header.drr_u.drr_write; 250698110f08SMatthew Ahrens arc_buf_t *abuf = arc_loan_buf(dmu_objset_spa(ra->os), 250798110f08SMatthew Ahrens drrw->drr_length); 250898110f08SMatthew Ahrens 2509a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 251098110f08SMatthew Ahrens drrw->drr_length, abuf->b_data); 2511a2cdcdd2SPaul Dagnelie if (err != 0) { 251298110f08SMatthew Ahrens dmu_return_arcbuf(abuf); 2513a2cdcdd2SPaul Dagnelie return (err); 2514a2cdcdd2SPaul Dagnelie } 2515a2cdcdd2SPaul Dagnelie ra->rrd->write_buf = abuf; 2516a2cdcdd2SPaul Dagnelie receive_read_prefetch(ra, drrw->drr_object, drrw->drr_offset, 2517a2cdcdd2SPaul Dagnelie drrw->drr_length); 251898110f08SMatthew Ahrens return (err); 251998110f08SMatthew Ahrens } 252098110f08SMatthew Ahrens case DRR_WRITE_BYREF: 252198110f08SMatthew Ahrens { 2522a2cdcdd2SPaul Dagnelie struct drr_write_byref *drrwb = 2523a2cdcdd2SPaul Dagnelie &ra->rrd->header.drr_u.drr_write_byref; 2524a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 2525a2cdcdd2SPaul Dagnelie receive_read_prefetch(ra, drrwb->drr_object, drrwb->drr_offset, 2526a2cdcdd2SPaul Dagnelie drrwb->drr_length); 2527a2cdcdd2SPaul Dagnelie return (err); 252898110f08SMatthew Ahrens } 252998110f08SMatthew Ahrens case DRR_WRITE_EMBEDDED: 253098110f08SMatthew Ahrens { 253198110f08SMatthew Ahrens struct drr_write_embedded *drrwe = 2532a2cdcdd2SPaul Dagnelie &ra->rrd->header.drr_u.drr_write_embedded; 2533a2cdcdd2SPaul Dagnelie uint32_t size = P2ROUNDUP(drrwe->drr_psize, 8); 2534a2cdcdd2SPaul Dagnelie void *buf = kmem_zalloc(size, KM_SLEEP); 2535a2cdcdd2SPaul Dagnelie 2536a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, size, buf); 2537a2cdcdd2SPaul Dagnelie if (err != 0) { 2538a2cdcdd2SPaul Dagnelie kmem_free(buf, size); 253998110f08SMatthew Ahrens return (err); 2540a2cdcdd2SPaul Dagnelie } 2541a2cdcdd2SPaul Dagnelie 2542a2cdcdd2SPaul Dagnelie receive_read_prefetch(ra, drrwe->drr_object, drrwe->drr_offset, 2543a2cdcdd2SPaul Dagnelie drrwe->drr_length); 2544a2cdcdd2SPaul Dagnelie return (err); 254598110f08SMatthew Ahrens } 254698110f08SMatthew Ahrens case DRR_FREE: 254798110f08SMatthew Ahrens { 2548a2cdcdd2SPaul Dagnelie /* 2549a2cdcdd2SPaul Dagnelie * It might be beneficial to prefetch indirect blocks here, but 2550a2cdcdd2SPaul Dagnelie * we don't really have the data to decide for sure. 2551a2cdcdd2SPaul Dagnelie */ 2552a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 2553a2cdcdd2SPaul Dagnelie return (err); 255498110f08SMatthew Ahrens } 255598110f08SMatthew Ahrens case DRR_END: 255698110f08SMatthew Ahrens { 2557a2cdcdd2SPaul Dagnelie struct drr_end *drre = &ra->rrd->header.drr_u.drr_end; 255898110f08SMatthew Ahrens if (!ZIO_CHECKSUM_EQUAL(ra->prev_cksum, drre->drr_checksum)) 25599c3fd121SMatthew Ahrens return (SET_ERROR(ECKSUM)); 256098110f08SMatthew Ahrens return (0); 256198110f08SMatthew Ahrens } 256298110f08SMatthew Ahrens case DRR_SPILL: 256398110f08SMatthew Ahrens { 2564a2cdcdd2SPaul Dagnelie struct drr_spill *drrs = &ra->rrd->header.drr_u.drr_spill; 2565a2cdcdd2SPaul Dagnelie void *buf = kmem_zalloc(drrs->drr_length, KM_SLEEP); 2566a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, drrs->drr_length, 2567a2cdcdd2SPaul Dagnelie buf); 256898110f08SMatthew Ahrens if (err != 0) 2569a2cdcdd2SPaul Dagnelie kmem_free(buf, drrs->drr_length); 2570a2cdcdd2SPaul Dagnelie return (err); 257198110f08SMatthew Ahrens } 257298110f08SMatthew Ahrens default: 257398110f08SMatthew Ahrens return (SET_ERROR(EINVAL)); 257498110f08SMatthew Ahrens } 257598110f08SMatthew Ahrens } 257698110f08SMatthew Ahrens 25773cb34c60Sahrens /* 2578a2cdcdd2SPaul Dagnelie * Commit the records to the pool. 2579a2cdcdd2SPaul Dagnelie */ 2580a2cdcdd2SPaul Dagnelie static int 2581a2cdcdd2SPaul Dagnelie receive_process_record(struct receive_writer_arg *rwa, 2582a2cdcdd2SPaul Dagnelie struct receive_record_arg *rrd) 2583a2cdcdd2SPaul Dagnelie { 2584a2cdcdd2SPaul Dagnelie int err; 2585a2cdcdd2SPaul Dagnelie 25869c3fd121SMatthew Ahrens /* Processing in order, therefore bytes_read should be increasing. */ 25879c3fd121SMatthew Ahrens ASSERT3U(rrd->bytes_read, >=, rwa->bytes_read); 25889c3fd121SMatthew Ahrens rwa->bytes_read = rrd->bytes_read; 25899c3fd121SMatthew Ahrens 2590a2cdcdd2SPaul Dagnelie switch (rrd->header.drr_type) { 2591a2cdcdd2SPaul Dagnelie case DRR_OBJECT: 2592a2cdcdd2SPaul Dagnelie { 2593a2cdcdd2SPaul Dagnelie struct drr_object *drro = &rrd->header.drr_u.drr_object; 2594a2cdcdd2SPaul Dagnelie err = receive_object(rwa, drro, rrd->payload); 2595a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2596a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2597a2cdcdd2SPaul Dagnelie return (err); 2598a2cdcdd2SPaul Dagnelie } 2599a2cdcdd2SPaul Dagnelie case DRR_FREEOBJECTS: 2600a2cdcdd2SPaul Dagnelie { 2601a2cdcdd2SPaul Dagnelie struct drr_freeobjects *drrfo = 2602a2cdcdd2SPaul Dagnelie &rrd->header.drr_u.drr_freeobjects; 2603a2cdcdd2SPaul Dagnelie return (receive_freeobjects(rwa, drrfo)); 2604a2cdcdd2SPaul Dagnelie } 2605a2cdcdd2SPaul Dagnelie case DRR_WRITE: 2606a2cdcdd2SPaul Dagnelie { 2607a2cdcdd2SPaul Dagnelie struct drr_write *drrw = &rrd->header.drr_u.drr_write; 2608a2cdcdd2SPaul Dagnelie err = receive_write(rwa, drrw, rrd->write_buf); 2609a2cdcdd2SPaul Dagnelie /* if receive_write() is successful, it consumes the arc_buf */ 2610a2cdcdd2SPaul Dagnelie if (err != 0) 2611a2cdcdd2SPaul Dagnelie dmu_return_arcbuf(rrd->write_buf); 2612a2cdcdd2SPaul Dagnelie rrd->write_buf = NULL; 2613a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2614a2cdcdd2SPaul Dagnelie return (err); 2615a2cdcdd2SPaul Dagnelie } 2616a2cdcdd2SPaul Dagnelie case DRR_WRITE_BYREF: 2617a2cdcdd2SPaul Dagnelie { 2618a2cdcdd2SPaul Dagnelie struct drr_write_byref *drrwbr = 2619a2cdcdd2SPaul Dagnelie &rrd->header.drr_u.drr_write_byref; 2620a2cdcdd2SPaul Dagnelie return (receive_write_byref(rwa, drrwbr)); 2621a2cdcdd2SPaul Dagnelie } 2622a2cdcdd2SPaul Dagnelie case DRR_WRITE_EMBEDDED: 2623a2cdcdd2SPaul Dagnelie { 2624a2cdcdd2SPaul Dagnelie struct drr_write_embedded *drrwe = 2625a2cdcdd2SPaul Dagnelie &rrd->header.drr_u.drr_write_embedded; 2626a2cdcdd2SPaul Dagnelie err = receive_write_embedded(rwa, drrwe, rrd->payload); 2627a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2628a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2629a2cdcdd2SPaul Dagnelie return (err); 2630a2cdcdd2SPaul Dagnelie } 2631a2cdcdd2SPaul Dagnelie case DRR_FREE: 2632a2cdcdd2SPaul Dagnelie { 2633a2cdcdd2SPaul Dagnelie struct drr_free *drrf = &rrd->header.drr_u.drr_free; 2634a2cdcdd2SPaul Dagnelie return (receive_free(rwa, drrf)); 2635a2cdcdd2SPaul Dagnelie } 2636a2cdcdd2SPaul Dagnelie case DRR_SPILL: 2637a2cdcdd2SPaul Dagnelie { 2638a2cdcdd2SPaul Dagnelie struct drr_spill *drrs = &rrd->header.drr_u.drr_spill; 2639a2cdcdd2SPaul Dagnelie err = receive_spill(rwa, drrs, rrd->payload); 2640a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2641a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2642a2cdcdd2SPaul Dagnelie return (err); 2643a2cdcdd2SPaul Dagnelie } 2644a2cdcdd2SPaul Dagnelie default: 2645a2cdcdd2SPaul Dagnelie return (SET_ERROR(EINVAL)); 2646a2cdcdd2SPaul Dagnelie } 2647a2cdcdd2SPaul Dagnelie } 2648a2cdcdd2SPaul Dagnelie 2649a2cdcdd2SPaul Dagnelie /* 2650a2cdcdd2SPaul Dagnelie * dmu_recv_stream's worker thread; pull records off the queue, and then call 2651a2cdcdd2SPaul Dagnelie * receive_process_record When we're done, signal the main thread and exit. 2652a2cdcdd2SPaul Dagnelie */ 2653a2cdcdd2SPaul Dagnelie static void 2654a2cdcdd2SPaul Dagnelie receive_writer_thread(void *arg) 2655a2cdcdd2SPaul Dagnelie { 2656a2cdcdd2SPaul Dagnelie struct receive_writer_arg *rwa = arg; 2657a2cdcdd2SPaul Dagnelie struct receive_record_arg *rrd; 2658a2cdcdd2SPaul Dagnelie for (rrd = bqueue_dequeue(&rwa->q); !rrd->eos_marker; 2659a2cdcdd2SPaul Dagnelie rrd = bqueue_dequeue(&rwa->q)) { 2660a2cdcdd2SPaul Dagnelie /* 2661a2cdcdd2SPaul Dagnelie * If there's an error, the main thread will stop putting things 2662a2cdcdd2SPaul Dagnelie * on the queue, but we need to clear everything in it before we 2663a2cdcdd2SPaul Dagnelie * can exit. 2664a2cdcdd2SPaul Dagnelie */ 2665a2cdcdd2SPaul Dagnelie if (rwa->err == 0) { 2666a2cdcdd2SPaul Dagnelie rwa->err = receive_process_record(rwa, rrd); 2667a2cdcdd2SPaul Dagnelie } else if (rrd->write_buf != NULL) { 2668a2cdcdd2SPaul Dagnelie dmu_return_arcbuf(rrd->write_buf); 2669a2cdcdd2SPaul Dagnelie rrd->write_buf = NULL; 2670a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2671a2cdcdd2SPaul Dagnelie } else if (rrd->payload != NULL) { 2672a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2673a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2674a2cdcdd2SPaul Dagnelie } 2675a2cdcdd2SPaul Dagnelie kmem_free(rrd, sizeof (*rrd)); 2676a2cdcdd2SPaul Dagnelie } 2677a2cdcdd2SPaul Dagnelie kmem_free(rrd, sizeof (*rrd)); 2678a2cdcdd2SPaul Dagnelie mutex_enter(&rwa->mutex); 2679a2cdcdd2SPaul Dagnelie rwa->done = B_TRUE; 2680a2cdcdd2SPaul Dagnelie cv_signal(&rwa->cv); 2681a2cdcdd2SPaul Dagnelie mutex_exit(&rwa->mutex); 2682a2cdcdd2SPaul Dagnelie } 2683a2cdcdd2SPaul Dagnelie 26849c3fd121SMatthew Ahrens static int 26859c3fd121SMatthew Ahrens resume_check(struct receive_arg *ra, nvlist_t *begin_nvl) 26869c3fd121SMatthew Ahrens { 26879c3fd121SMatthew Ahrens uint64_t val; 26889c3fd121SMatthew Ahrens objset_t *mos = dmu_objset_pool(ra->os)->dp_meta_objset; 26899c3fd121SMatthew Ahrens uint64_t dsobj = dmu_objset_id(ra->os); 26909c3fd121SMatthew Ahrens uint64_t resume_obj, resume_off; 26919c3fd121SMatthew Ahrens 26929c3fd121SMatthew Ahrens if (nvlist_lookup_uint64(begin_nvl, 26939c3fd121SMatthew Ahrens "resume_object", &resume_obj) != 0 || 26949c3fd121SMatthew Ahrens nvlist_lookup_uint64(begin_nvl, 26959c3fd121SMatthew Ahrens "resume_offset", &resume_off) != 0) { 26969c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 26979c3fd121SMatthew Ahrens } 26989c3fd121SMatthew Ahrens VERIFY0(zap_lookup(mos, dsobj, 26999c3fd121SMatthew Ahrens DS_FIELD_RESUME_OBJECT, sizeof (val), 1, &val)); 27009c3fd121SMatthew Ahrens if (resume_obj != val) 27019c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 27029c3fd121SMatthew Ahrens VERIFY0(zap_lookup(mos, dsobj, 27039c3fd121SMatthew Ahrens DS_FIELD_RESUME_OFFSET, sizeof (val), 1, &val)); 27049c3fd121SMatthew Ahrens if (resume_off != val) 27059c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 27069c3fd121SMatthew Ahrens 27079c3fd121SMatthew Ahrens return (0); 27089c3fd121SMatthew Ahrens } 27099c3fd121SMatthew Ahrens 2710a2cdcdd2SPaul Dagnelie /* 2711a2cdcdd2SPaul Dagnelie * Read in the stream's records, one by one, and apply them to the pool. There 2712a2cdcdd2SPaul Dagnelie * are two threads involved; the thread that calls this function will spin up a 2713a2cdcdd2SPaul Dagnelie * worker thread, read the records off the stream one by one, and issue 2714a2cdcdd2SPaul Dagnelie * prefetches for any necessary indirect blocks. It will then push the records 2715a2cdcdd2SPaul Dagnelie * onto an internal blocking queue. The worker thread will pull the records off 2716a2cdcdd2SPaul Dagnelie * the queue, and actually write the data into the DMU. This way, the worker 2717a2cdcdd2SPaul Dagnelie * thread doesn't have to wait for reads to complete, since everything it needs 2718a2cdcdd2SPaul Dagnelie * (the indirect blocks) will be prefetched. 2719a2cdcdd2SPaul Dagnelie * 27203cb34c60Sahrens * NB: callers *must* call dmu_recv_end() if this succeeds. 27213cb34c60Sahrens */ 2722efb80947Sahrens int 2723c99e4bdcSChris Kirby dmu_recv_stream(dmu_recv_cookie_t *drc, vnode_t *vp, offset_t *voffp, 2724c99e4bdcSChris Kirby int cleanup_fd, uint64_t *action_handlep) 2725efb80947Sahrens { 272698110f08SMatthew Ahrens int err = 0; 2727a2cdcdd2SPaul Dagnelie struct receive_arg ra = { 0 }; 2728a2cdcdd2SPaul Dagnelie struct receive_writer_arg rwa = { 0 }; 27299e69d7d0SLori Alt int featureflags; 27309c3fd121SMatthew Ahrens nvlist_t *begin_nvl = NULL; 2731efb80947Sahrens 27323b2aab18SMatthew Ahrens ra.byteswap = drc->drc_byteswap; 27333b2aab18SMatthew Ahrens ra.cksum = drc->drc_cksum; 27343cb34c60Sahrens ra.vp = vp; 27353cb34c60Sahrens ra.voff = *voffp; 27369c3fd121SMatthew Ahrens 27379c3fd121SMatthew Ahrens if (dsl_dataset_is_zapified(drc->drc_ds)) { 27389c3fd121SMatthew Ahrens (void) zap_lookup(drc->drc_ds->ds_dir->dd_pool->dp_meta_objset, 27399c3fd121SMatthew Ahrens drc->drc_ds->ds_object, DS_FIELD_RESUME_BYTES, 27409c3fd121SMatthew Ahrens sizeof (ra.bytes_read), 1, &ra.bytes_read); 27419c3fd121SMatthew Ahrens } 27429c3fd121SMatthew Ahrens 274368ecb2ecSPaul Dagnelie objlist_create(&ra.ignore_objlist); 2744efb80947Sahrens 27453cb34c60Sahrens /* these were verified in dmu_recv_begin */ 27463b2aab18SMatthew Ahrens ASSERT3U(DMU_GET_STREAM_HDRTYPE(drc->drc_drrb->drr_versioninfo), ==, 27479e69d7d0SLori Alt DMU_SUBSTREAM); 27483b2aab18SMatthew Ahrens ASSERT3U(drc->drc_drrb->drr_type, <, DMU_OST_NUMTYPES); 2749efb80947Sahrens 2750efb80947Sahrens /* 2751efb80947Sahrens * Open the objset we are modifying. 2752efb80947Sahrens */ 275398110f08SMatthew Ahrens VERIFY0(dmu_objset_from_ds(drc->drc_ds, &ra.os)); 2754efb80947Sahrens 2755c1379625SJustin T. Gibbs ASSERT(dsl_dataset_phys(drc->drc_ds)->ds_flags & DS_FLAG_INCONSISTENT); 2756efb80947Sahrens 27579e69d7d0SLori Alt featureflags = DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo); 27589e69d7d0SLori Alt 27599e69d7d0SLori Alt /* if this stream is dedup'ed, set up the avl tree for guid mapping */ 27609e69d7d0SLori Alt if (featureflags & DMU_BACKUP_FEATURE_DEDUP) { 2761a7f53a56SChris Kirby minor_t minor; 2762a7f53a56SChris Kirby 2763c99e4bdcSChris Kirby if (cleanup_fd == -1) { 2764be6fd75aSMatthew Ahrens ra.err = SET_ERROR(EBADF); 2765c99e4bdcSChris Kirby goto out; 2766c99e4bdcSChris Kirby } 2767a7f53a56SChris Kirby ra.err = zfs_onexit_fd_hold(cleanup_fd, &minor); 27683b2aab18SMatthew Ahrens if (ra.err != 0) { 2769a7f53a56SChris Kirby cleanup_fd = -1; 2770a7f53a56SChris Kirby goto out; 2771a7f53a56SChris Kirby } 2772a7f53a56SChris Kirby 2773c99e4bdcSChris Kirby if (*action_handlep == 0) { 2774a2cdcdd2SPaul Dagnelie rwa.guid_to_ds_map = 2775c99e4bdcSChris Kirby kmem_alloc(sizeof (avl_tree_t), KM_SLEEP); 2776a2cdcdd2SPaul Dagnelie avl_create(rwa.guid_to_ds_map, guid_compare, 2777c99e4bdcSChris Kirby sizeof (guid_map_entry_t), 2778c99e4bdcSChris Kirby offsetof(guid_map_entry_t, avlnode)); 277998110f08SMatthew Ahrens err = zfs_onexit_add_cb(minor, 2780a2cdcdd2SPaul Dagnelie free_guid_map_onexit, rwa.guid_to_ds_map, 2781c99e4bdcSChris Kirby action_handlep); 27823b2aab18SMatthew Ahrens if (ra.err != 0) 2783c99e4bdcSChris Kirby goto out; 2784c99e4bdcSChris Kirby } else { 278598110f08SMatthew Ahrens err = zfs_onexit_cb_data(minor, *action_handlep, 2786a2cdcdd2SPaul Dagnelie (void **)&rwa.guid_to_ds_map); 27873b2aab18SMatthew Ahrens if (ra.err != 0) 2788c99e4bdcSChris Kirby goto out; 2789c99e4bdcSChris Kirby } 2790ec5cf9d5SAlexander Stetsenko 2791a2cdcdd2SPaul Dagnelie drc->drc_guid_to_ds_map = rwa.guid_to_ds_map; 27929e69d7d0SLori Alt } 27939e69d7d0SLori Alt 27949c3fd121SMatthew Ahrens uint32_t payloadlen = drc->drc_drr_begin->drr_payloadlen; 27959c3fd121SMatthew Ahrens void *payload = NULL; 27969c3fd121SMatthew Ahrens if (payloadlen != 0) 27979c3fd121SMatthew Ahrens payload = kmem_alloc(payloadlen, KM_SLEEP); 27989c3fd121SMatthew Ahrens 27999c3fd121SMatthew Ahrens err = receive_read_payload_and_next_header(&ra, payloadlen, payload); 28009c3fd121SMatthew Ahrens if (err != 0) { 28019c3fd121SMatthew Ahrens if (payloadlen != 0) 28029c3fd121SMatthew Ahrens kmem_free(payload, payloadlen); 280398110f08SMatthew Ahrens goto out; 28049c3fd121SMatthew Ahrens } 28059c3fd121SMatthew Ahrens if (payloadlen != 0) { 28069c3fd121SMatthew Ahrens err = nvlist_unpack(payload, payloadlen, &begin_nvl, KM_SLEEP); 28079c3fd121SMatthew Ahrens kmem_free(payload, payloadlen); 28089c3fd121SMatthew Ahrens if (err != 0) 28099c3fd121SMatthew Ahrens goto out; 28109c3fd121SMatthew Ahrens } 28119c3fd121SMatthew Ahrens 28129c3fd121SMatthew Ahrens if (featureflags & DMU_BACKUP_FEATURE_RESUMING) { 28139c3fd121SMatthew Ahrens err = resume_check(&ra, begin_nvl); 28149c3fd121SMatthew Ahrens if (err != 0) 28159c3fd121SMatthew Ahrens goto out; 28169c3fd121SMatthew Ahrens } 281798110f08SMatthew Ahrens 2818a2cdcdd2SPaul Dagnelie (void) bqueue_init(&rwa.q, zfs_recv_queue_length, 2819a2cdcdd2SPaul Dagnelie offsetof(struct receive_record_arg, node)); 2820a2cdcdd2SPaul Dagnelie cv_init(&rwa.cv, NULL, CV_DEFAULT, NULL); 2821a2cdcdd2SPaul Dagnelie mutex_init(&rwa.mutex, NULL, MUTEX_DEFAULT, NULL); 2822a2cdcdd2SPaul Dagnelie rwa.os = ra.os; 2823a2cdcdd2SPaul Dagnelie rwa.byteswap = drc->drc_byteswap; 28249c3fd121SMatthew Ahrens rwa.resumable = drc->drc_resumable; 2825a2cdcdd2SPaul Dagnelie 2826a2cdcdd2SPaul Dagnelie (void) thread_create(NULL, 0, receive_writer_thread, &rwa, 0, curproc, 2827a2cdcdd2SPaul Dagnelie TS_RUN, minclsyspri); 2828a2cdcdd2SPaul Dagnelie /* 2829a2cdcdd2SPaul Dagnelie * We're reading rwa.err without locks, which is safe since we are the 2830a2cdcdd2SPaul Dagnelie * only reader, and the worker thread is the only writer. It's ok if we 2831a2cdcdd2SPaul Dagnelie * miss a write for an iteration or two of the loop, since the writer 2832a2cdcdd2SPaul Dagnelie * thread will keep freeing records we send it until we send it an eos 2833a2cdcdd2SPaul Dagnelie * marker. 2834a2cdcdd2SPaul Dagnelie * 2835a2cdcdd2SPaul Dagnelie * We can leave this loop in 3 ways: First, if rwa.err is 2836a2cdcdd2SPaul Dagnelie * non-zero. In that case, the writer thread will free the rrd we just 2837a2cdcdd2SPaul Dagnelie * pushed. Second, if we're interrupted; in that case, either it's the 2838a2cdcdd2SPaul Dagnelie * first loop and ra.rrd was never allocated, or it's later, and ra.rrd 2839a2cdcdd2SPaul Dagnelie * has been handed off to the writer thread who will free it. Finally, 2840a2cdcdd2SPaul Dagnelie * if receive_read_record fails or we're at the end of the stream, then 2841a2cdcdd2SPaul Dagnelie * we free ra.rrd and exit. 2842a2cdcdd2SPaul Dagnelie */ 2843a2cdcdd2SPaul Dagnelie while (rwa.err == 0) { 2844efb80947Sahrens if (issig(JUSTLOOKING) && issig(FORREAL)) { 284598110f08SMatthew Ahrens err = SET_ERROR(EINTR); 284698110f08SMatthew Ahrens break; 2847efb80947Sahrens } 2848efb80947Sahrens 2849a2cdcdd2SPaul Dagnelie ASSERT3P(ra.rrd, ==, NULL); 2850a2cdcdd2SPaul Dagnelie ra.rrd = ra.next_rrd; 2851a2cdcdd2SPaul Dagnelie ra.next_rrd = NULL; 2852a2cdcdd2SPaul Dagnelie /* Allocates and loads header into ra.next_rrd */ 2853a2cdcdd2SPaul Dagnelie err = receive_read_record(&ra); 2854efb80947Sahrens 2855a2cdcdd2SPaul Dagnelie if (ra.rrd->header.drr_type == DRR_END || err != 0) { 2856a2cdcdd2SPaul Dagnelie kmem_free(ra.rrd, sizeof (*ra.rrd)); 2857a2cdcdd2SPaul Dagnelie ra.rrd = NULL; 28580a586ceaSMark Shellenbaum break; 2859a2cdcdd2SPaul Dagnelie } 2860a2cdcdd2SPaul Dagnelie 2861a2cdcdd2SPaul Dagnelie bqueue_enqueue(&rwa.q, ra.rrd, 2862a2cdcdd2SPaul Dagnelie sizeof (struct receive_record_arg) + ra.rrd->payload_size); 2863a2cdcdd2SPaul Dagnelie ra.rrd = NULL; 2864a2cdcdd2SPaul Dagnelie } 2865a2cdcdd2SPaul Dagnelie if (ra.next_rrd == NULL) 2866a2cdcdd2SPaul Dagnelie ra.next_rrd = kmem_zalloc(sizeof (*ra.next_rrd), KM_SLEEP); 2867a2cdcdd2SPaul Dagnelie ra.next_rrd->eos_marker = B_TRUE; 2868a2cdcdd2SPaul Dagnelie bqueue_enqueue(&rwa.q, ra.next_rrd, 1); 2869a2cdcdd2SPaul Dagnelie 2870a2cdcdd2SPaul Dagnelie mutex_enter(&rwa.mutex); 2871a2cdcdd2SPaul Dagnelie while (!rwa.done) { 2872a2cdcdd2SPaul Dagnelie cv_wait(&rwa.cv, &rwa.mutex); 2873efb80947Sahrens } 2874a2cdcdd2SPaul Dagnelie mutex_exit(&rwa.mutex); 2875a2cdcdd2SPaul Dagnelie 2876a2cdcdd2SPaul Dagnelie cv_destroy(&rwa.cv); 2877a2cdcdd2SPaul Dagnelie mutex_destroy(&rwa.mutex); 2878a2cdcdd2SPaul Dagnelie bqueue_destroy(&rwa.q); 2879a2cdcdd2SPaul Dagnelie if (err == 0) 2880a2cdcdd2SPaul Dagnelie err = rwa.err; 2881efb80947Sahrens 2882efb80947Sahrens out: 28839c3fd121SMatthew Ahrens nvlist_free(begin_nvl); 2884a7f53a56SChris Kirby if ((featureflags & DMU_BACKUP_FEATURE_DEDUP) && (cleanup_fd != -1)) 2885a7f53a56SChris Kirby zfs_onexit_fd_rele(cleanup_fd); 2886a7f53a56SChris Kirby 288798110f08SMatthew Ahrens if (err != 0) { 2888efb80947Sahrens /* 28899c3fd121SMatthew Ahrens * Clean up references. If receive is not resumable, 28909c3fd121SMatthew Ahrens * destroy what we created, so we don't leave it in 28919c3fd121SMatthew Ahrens * the inconsistent state. 2892efb80947Sahrens */ 28933b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(drc); 2894efb80947Sahrens } 2895efb80947Sahrens 28963cb34c60Sahrens *voffp = ra.voff; 289768ecb2ecSPaul Dagnelie objlist_destroy(&ra.ignore_objlist); 289898110f08SMatthew Ahrens return (err); 2899efb80947Sahrens } 2900f18faf3fSek 29013cb34c60Sahrens static int 29023b2aab18SMatthew Ahrens dmu_recv_end_check(void *arg, dmu_tx_t *tx) 29033cb34c60Sahrens { 29043b2aab18SMatthew Ahrens dmu_recv_cookie_t *drc = arg; 29053b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 29063b2aab18SMatthew Ahrens int error; 29073b2aab18SMatthew Ahrens 29083b2aab18SMatthew Ahrens ASSERT3P(drc->drc_ds->ds_owner, ==, dmu_recv_tag); 29093cb34c60Sahrens 29103b2aab18SMatthew Ahrens if (!drc->drc_newfs) { 29113b2aab18SMatthew Ahrens dsl_dataset_t *origin_head; 29123b2aab18SMatthew Ahrens 29133b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, drc->drc_tofs, FTAG, &origin_head); 29143b2aab18SMatthew Ahrens if (error != 0) 29153b2aab18SMatthew Ahrens return (error); 291634f2f8cfSMatthew Ahrens if (drc->drc_force) { 291734f2f8cfSMatthew Ahrens /* 291834f2f8cfSMatthew Ahrens * We will destroy any snapshots in tofs (i.e. before 291934f2f8cfSMatthew Ahrens * origin_head) that are after the origin (which is 292034f2f8cfSMatthew Ahrens * the snap before drc_ds, because drc_ds can not 292134f2f8cfSMatthew Ahrens * have any snaps of its own). 292234f2f8cfSMatthew Ahrens */ 2923c1379625SJustin T. Gibbs uint64_t obj; 2924c1379625SJustin T. Gibbs 2925c1379625SJustin T. Gibbs obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 2926c1379625SJustin T. Gibbs while (obj != 2927c1379625SJustin T. Gibbs dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { 292834f2f8cfSMatthew Ahrens dsl_dataset_t *snap; 292934f2f8cfSMatthew Ahrens error = dsl_dataset_hold_obj(dp, obj, FTAG, 293034f2f8cfSMatthew Ahrens &snap); 293134f2f8cfSMatthew Ahrens if (error != 0) 2932beddaa9cSAndriy Gapon break; 293334f2f8cfSMatthew Ahrens if (snap->ds_dir != origin_head->ds_dir) 293434f2f8cfSMatthew Ahrens error = SET_ERROR(EINVAL); 293534f2f8cfSMatthew Ahrens if (error == 0) { 293634f2f8cfSMatthew Ahrens error = dsl_destroy_snapshot_check_impl( 293734f2f8cfSMatthew Ahrens snap, B_FALSE); 293834f2f8cfSMatthew Ahrens } 2939c1379625SJustin T. Gibbs obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 294034f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 294134f2f8cfSMatthew Ahrens if (error != 0) 2942beddaa9cSAndriy Gapon break; 2943beddaa9cSAndriy Gapon } 2944beddaa9cSAndriy Gapon if (error != 0) { 2945beddaa9cSAndriy Gapon dsl_dataset_rele(origin_head, FTAG); 2946beddaa9cSAndriy Gapon return (error); 294734f2f8cfSMatthew Ahrens } 294834f2f8cfSMatthew Ahrens } 29493b2aab18SMatthew Ahrens error = dsl_dataset_clone_swap_check_impl(drc->drc_ds, 295091948b51SKeith M Wesolowski origin_head, drc->drc_force, drc->drc_owner, tx); 29513b2aab18SMatthew Ahrens if (error != 0) { 29523b2aab18SMatthew Ahrens dsl_dataset_rele(origin_head, FTAG); 29533b2aab18SMatthew Ahrens return (error); 29543b2aab18SMatthew Ahrens } 29553b2aab18SMatthew Ahrens error = dsl_dataset_snapshot_check_impl(origin_head, 2956a2afb611SJerry Jelinek drc->drc_tosnap, tx, B_TRUE, 1, drc->drc_cred); 29573b2aab18SMatthew Ahrens dsl_dataset_rele(origin_head, FTAG); 29583b2aab18SMatthew Ahrens if (error != 0) 29593b2aab18SMatthew Ahrens return (error); 29603b2aab18SMatthew Ahrens 29613b2aab18SMatthew Ahrens error = dsl_destroy_head_check_impl(drc->drc_ds, 1); 29623b2aab18SMatthew Ahrens } else { 29633b2aab18SMatthew Ahrens error = dsl_dataset_snapshot_check_impl(drc->drc_ds, 2964a2afb611SJerry Jelinek drc->drc_tosnap, tx, B_TRUE, 1, drc->drc_cred); 29653b2aab18SMatthew Ahrens } 29663b2aab18SMatthew Ahrens return (error); 29673cb34c60Sahrens } 29683cb34c60Sahrens 29693cb34c60Sahrens static void 29703b2aab18SMatthew Ahrens dmu_recv_end_sync(void *arg, dmu_tx_t *tx) 29713cb34c60Sahrens { 29723b2aab18SMatthew Ahrens dmu_recv_cookie_t *drc = arg; 29733b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 29743b2aab18SMatthew Ahrens 29753b2aab18SMatthew Ahrens spa_history_log_internal_ds(drc->drc_ds, "finish receiving", 29763b2aab18SMatthew Ahrens tx, "snap=%s", drc->drc_tosnap); 29773b2aab18SMatthew Ahrens 29783b2aab18SMatthew Ahrens if (!drc->drc_newfs) { 29793b2aab18SMatthew Ahrens dsl_dataset_t *origin_head; 29803b2aab18SMatthew Ahrens 29813b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, drc->drc_tofs, FTAG, 29823b2aab18SMatthew Ahrens &origin_head)); 298334f2f8cfSMatthew Ahrens 298434f2f8cfSMatthew Ahrens if (drc->drc_force) { 298534f2f8cfSMatthew Ahrens /* 298634f2f8cfSMatthew Ahrens * Destroy any snapshots of drc_tofs (origin_head) 298734f2f8cfSMatthew Ahrens * after the origin (the snap before drc_ds). 298834f2f8cfSMatthew Ahrens */ 2989c1379625SJustin T. Gibbs uint64_t obj; 2990c1379625SJustin T. Gibbs 2991c1379625SJustin T. Gibbs obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 2992c1379625SJustin T. Gibbs while (obj != 2993c1379625SJustin T. Gibbs dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { 299434f2f8cfSMatthew Ahrens dsl_dataset_t *snap; 299534f2f8cfSMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(dp, obj, FTAG, 299634f2f8cfSMatthew Ahrens &snap)); 299734f2f8cfSMatthew Ahrens ASSERT3P(snap->ds_dir, ==, origin_head->ds_dir); 2998c1379625SJustin T. Gibbs obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 299934f2f8cfSMatthew Ahrens dsl_destroy_snapshot_sync_impl(snap, 300034f2f8cfSMatthew Ahrens B_FALSE, tx); 300134f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 300234f2f8cfSMatthew Ahrens } 300334f2f8cfSMatthew Ahrens } 300434f2f8cfSMatthew Ahrens VERIFY3P(drc->drc_ds->ds_prev, ==, 300534f2f8cfSMatthew Ahrens origin_head->ds_prev); 300634f2f8cfSMatthew Ahrens 30073b2aab18SMatthew Ahrens dsl_dataset_clone_swap_sync_impl(drc->drc_ds, 30083b2aab18SMatthew Ahrens origin_head, tx); 30093b2aab18SMatthew Ahrens dsl_dataset_snapshot_sync_impl(origin_head, 30103b2aab18SMatthew Ahrens drc->drc_tosnap, tx); 30113b2aab18SMatthew Ahrens 30123b2aab18SMatthew Ahrens /* set snapshot's creation time and guid */ 30133b2aab18SMatthew Ahrens dmu_buf_will_dirty(origin_head->ds_prev->ds_dbuf, tx); 3014c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head->ds_prev)->ds_creation_time = 30153b2aab18SMatthew Ahrens drc->drc_drrb->drr_creation_time; 3016c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head->ds_prev)->ds_guid = 30173b2aab18SMatthew Ahrens drc->drc_drrb->drr_toguid; 3018c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head->ds_prev)->ds_flags &= 30193b2aab18SMatthew Ahrens ~DS_FLAG_INCONSISTENT; 30203b2aab18SMatthew Ahrens 30213b2aab18SMatthew Ahrens dmu_buf_will_dirty(origin_head->ds_dbuf, tx); 3022c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head)->ds_flags &= 3023c1379625SJustin T. Gibbs ~DS_FLAG_INCONSISTENT; 30243b2aab18SMatthew Ahrens 30253b2aab18SMatthew Ahrens dsl_dataset_rele(origin_head, FTAG); 30263b2aab18SMatthew Ahrens dsl_destroy_head_sync_impl(drc->drc_ds, tx); 302791948b51SKeith M Wesolowski 302891948b51SKeith M Wesolowski if (drc->drc_owner != NULL) 302991948b51SKeith M Wesolowski VERIFY3P(origin_head->ds_owner, ==, drc->drc_owner); 30303b2aab18SMatthew Ahrens } else { 30313b2aab18SMatthew Ahrens dsl_dataset_t *ds = drc->drc_ds; 30323cb34c60Sahrens 30333b2aab18SMatthew Ahrens dsl_dataset_snapshot_sync_impl(ds, drc->drc_tosnap, tx); 30343cb34c60Sahrens 30353b2aab18SMatthew Ahrens /* set snapshot's creation time and guid */ 30363b2aab18SMatthew Ahrens dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); 3037c1379625SJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_creation_time = 30383b2aab18SMatthew Ahrens drc->drc_drrb->drr_creation_time; 3039c1379625SJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_guid = 3040c1379625SJustin T. Gibbs drc->drc_drrb->drr_toguid; 3041c1379625SJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_flags &= 3042c1379625SJustin T. Gibbs ~DS_FLAG_INCONSISTENT; 30433cb34c60Sahrens 30443b2aab18SMatthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx); 3045c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; 30469c3fd121SMatthew Ahrens if (dsl_dataset_has_resume_receive_state(ds)) { 30479c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30489c3fd121SMatthew Ahrens DS_FIELD_RESUME_FROMGUID, tx); 30499c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30509c3fd121SMatthew Ahrens DS_FIELD_RESUME_OBJECT, tx); 30519c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30529c3fd121SMatthew Ahrens DS_FIELD_RESUME_OFFSET, tx); 30539c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30549c3fd121SMatthew Ahrens DS_FIELD_RESUME_BYTES, tx); 30559c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30569c3fd121SMatthew Ahrens DS_FIELD_RESUME_TOGUID, tx); 30579c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30589c3fd121SMatthew Ahrens DS_FIELD_RESUME_TONAME, tx); 30599c3fd121SMatthew Ahrens } 30603b2aab18SMatthew Ahrens } 3061c1379625SJustin T. Gibbs drc->drc_newsnapobj = dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj; 30623b2aab18SMatthew Ahrens /* 30633b2aab18SMatthew Ahrens * Release the hold from dmu_recv_begin. This must be done before 30643b2aab18SMatthew Ahrens * we return to open context, so that when we free the dataset's dnode, 30653b2aab18SMatthew Ahrens * we can evict its bonus buffer. 30663b2aab18SMatthew Ahrens */ 30673b2aab18SMatthew Ahrens dsl_dataset_disown(drc->drc_ds, dmu_recv_tag); 30683b2aab18SMatthew Ahrens drc->drc_ds = NULL; 30693cb34c60Sahrens } 30703cb34c60Sahrens 3071ec5cf9d5SAlexander Stetsenko static int 30723b2aab18SMatthew Ahrens add_ds_to_guidmap(const char *name, avl_tree_t *guid_map, uint64_t snapobj) 3073ec5cf9d5SAlexander Stetsenko { 30743b2aab18SMatthew Ahrens dsl_pool_t *dp; 3075ec5cf9d5SAlexander Stetsenko dsl_dataset_t *snapds; 3076ec5cf9d5SAlexander Stetsenko guid_map_entry_t *gmep; 3077ec5cf9d5SAlexander Stetsenko int err; 3078ec5cf9d5SAlexander Stetsenko 3079ec5cf9d5SAlexander Stetsenko ASSERT(guid_map != NULL); 3080ec5cf9d5SAlexander Stetsenko 30813b2aab18SMatthew Ahrens err = dsl_pool_hold(name, FTAG, &dp); 30823b2aab18SMatthew Ahrens if (err != 0) 30833b2aab18SMatthew Ahrens return (err); 3084de8d9cffSMatthew Ahrens gmep = kmem_alloc(sizeof (*gmep), KM_SLEEP); 3085de8d9cffSMatthew Ahrens err = dsl_dataset_hold_obj(dp, snapobj, gmep, &snapds); 3086ec5cf9d5SAlexander Stetsenko if (err == 0) { 3087c1379625SJustin T. Gibbs gmep->guid = dsl_dataset_phys(snapds)->ds_guid; 3088ec5cf9d5SAlexander Stetsenko gmep->gme_ds = snapds; 3089ec5cf9d5SAlexander Stetsenko avl_add(guid_map, gmep); 30903b2aab18SMatthew Ahrens dsl_dataset_long_hold(snapds, gmep); 3091de8d9cffSMatthew Ahrens } else { 3092de8d9cffSMatthew Ahrens kmem_free(gmep, sizeof (*gmep)); 3093ec5cf9d5SAlexander Stetsenko } 3094ec5cf9d5SAlexander Stetsenko 30953b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 3096ec5cf9d5SAlexander Stetsenko return (err); 3097ec5cf9d5SAlexander Stetsenko } 3098ec5cf9d5SAlexander Stetsenko 30993b2aab18SMatthew Ahrens static int dmu_recv_end_modified_blocks = 3; 31003b2aab18SMatthew Ahrens 3101ae46e4c7SMatthew Ahrens static int 3102ae46e4c7SMatthew Ahrens dmu_recv_existing_end(dmu_recv_cookie_t *drc) 3103f18faf3fSek { 31043b2aab18SMatthew Ahrens int error; 31053b2aab18SMatthew Ahrens char name[MAXNAMELEN]; 31063cb34c60Sahrens 31073b2aab18SMatthew Ahrens #ifdef _KERNEL 31083b2aab18SMatthew Ahrens /* 31093b2aab18SMatthew Ahrens * We will be destroying the ds; make sure its origin is unmounted if 31103b2aab18SMatthew Ahrens * necessary. 31113b2aab18SMatthew Ahrens */ 31123b2aab18SMatthew Ahrens dsl_dataset_name(drc->drc_ds, name); 31133b2aab18SMatthew Ahrens zfs_destroy_unmount_origin(name); 31143b2aab18SMatthew Ahrens #endif 31153cb34c60Sahrens 31163b2aab18SMatthew Ahrens error = dsl_sync_task(drc->drc_tofs, 31173b2aab18SMatthew Ahrens dmu_recv_end_check, dmu_recv_end_sync, drc, 31187d46dc6cSMatthew Ahrens dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL); 31193cb34c60Sahrens 31203b2aab18SMatthew Ahrens if (error != 0) 31213b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(drc); 31223b2aab18SMatthew Ahrens return (error); 3123f18faf3fSek } 3124ae46e4c7SMatthew Ahrens 3125ae46e4c7SMatthew Ahrens static int 3126ae46e4c7SMatthew Ahrens dmu_recv_new_end(dmu_recv_cookie_t *drc) 3127ae46e4c7SMatthew Ahrens { 31283b2aab18SMatthew Ahrens int error; 3129ae46e4c7SMatthew Ahrens 31303b2aab18SMatthew Ahrens error = dsl_sync_task(drc->drc_tofs, 31313b2aab18SMatthew Ahrens dmu_recv_end_check, dmu_recv_end_sync, drc, 31327d46dc6cSMatthew Ahrens dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL); 3133ae46e4c7SMatthew Ahrens 31343b2aab18SMatthew Ahrens if (error != 0) { 31353b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(drc); 31363b2aab18SMatthew Ahrens } else if (drc->drc_guid_to_ds_map != NULL) { 31373b2aab18SMatthew Ahrens (void) add_ds_to_guidmap(drc->drc_tofs, 31383b2aab18SMatthew Ahrens drc->drc_guid_to_ds_map, 31393b2aab18SMatthew Ahrens drc->drc_newsnapobj); 3140ae46e4c7SMatthew Ahrens } 31413b2aab18SMatthew Ahrens return (error); 3142ae46e4c7SMatthew Ahrens } 3143ae46e4c7SMatthew Ahrens 3144ae46e4c7SMatthew Ahrens int 314591948b51SKeith M Wesolowski dmu_recv_end(dmu_recv_cookie_t *drc, void *owner) 3146ae46e4c7SMatthew Ahrens { 314791948b51SKeith M Wesolowski drc->drc_owner = owner; 314891948b51SKeith M Wesolowski 31493b2aab18SMatthew Ahrens if (drc->drc_newfs) 3150ae46e4c7SMatthew Ahrens return (dmu_recv_new_end(drc)); 31513b2aab18SMatthew Ahrens else 31523b2aab18SMatthew Ahrens return (dmu_recv_existing_end(drc)); 3153ae46e4c7SMatthew Ahrens } 31542f3d8780SMatthew Ahrens 31552f3d8780SMatthew Ahrens /* 31562f3d8780SMatthew Ahrens * Return TRUE if this objset is currently being received into. 31572f3d8780SMatthew Ahrens */ 31582f3d8780SMatthew Ahrens boolean_t 31592f3d8780SMatthew Ahrens dmu_objset_is_receiving(objset_t *os) 31602f3d8780SMatthew Ahrens { 31612f3d8780SMatthew Ahrens return (os->os_dsl_dataset != NULL && 31622f3d8780SMatthew Ahrens os->os_dsl_dataset->ds_owner == dmu_recv_tag); 31632f3d8780SMatthew Ahrens } 3164