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. 27ec5cf9d5SAlexander Stetsenko */ 28efb80947Sahrens 29efb80947Sahrens #include <sys/dmu.h> 30efb80947Sahrens #include <sys/dmu_impl.h> 31efb80947Sahrens #include <sys/dmu_tx.h> 32efb80947Sahrens #include <sys/dbuf.h> 33efb80947Sahrens #include <sys/dnode.h> 34efb80947Sahrens #include <sys/zfs_context.h> 35efb80947Sahrens #include <sys/dmu_objset.h> 36efb80947Sahrens #include <sys/dmu_traverse.h> 37efb80947Sahrens #include <sys/dsl_dataset.h> 38efb80947Sahrens #include <sys/dsl_dir.h> 3992241e0bSTom Erickson #include <sys/dsl_prop.h> 40efb80947Sahrens #include <sys/dsl_pool.h> 41efb80947Sahrens #include <sys/dsl_synctask.h> 42efb80947Sahrens #include <sys/zfs_ioctl.h> 43efb80947Sahrens #include <sys/zap.h> 44efb80947Sahrens #include <sys/zio_checksum.h> 45dc7cd546SMark Shellenbaum #include <sys/zfs_znode.h> 46cde58dbcSMatthew Ahrens #include <zfs_fletcher.h> 479e69d7d0SLori Alt #include <sys/avl.h> 488e714474SLori Alt #include <sys/ddt.h> 49c99e4bdcSChris Kirby #include <sys/zfs_onexit.h> 503b2aab18SMatthew Ahrens #include <sys/dmu_send.h> 513b2aab18SMatthew Ahrens #include <sys/dsl_destroy.h> 525d7b4d43SMatthew Ahrens #include <sys/blkptr.h> 5378f17100SMatthew Ahrens #include <sys/dsl_bookmark.h> 545d7b4d43SMatthew Ahrens #include <sys/zfeature.h> 55a2cdcdd2SPaul Dagnelie #include <sys/bqueue.h> 56efb80947Sahrens 5719b94df9SMatthew Ahrens /* Set this tunable to TRUE to replace corrupt data with 0x2f5baddb10c */ 5819b94df9SMatthew Ahrens int zfs_send_corrupt_data = B_FALSE; 59a2cdcdd2SPaul Dagnelie int zfs_send_queue_length = 16 * 1024 * 1024; 60a2cdcdd2SPaul Dagnelie int zfs_recv_queue_length = 16 * 1024 * 1024; 6119b94df9SMatthew Ahrens 623cb34c60Sahrens static char *dmu_recv_tag = "dmu_recv_tag"; 639c3fd121SMatthew Ahrens const char *recv_clone_name = "%recv"; 643cb34c60Sahrens 65a2cdcdd2SPaul Dagnelie #define BP_SPAN(datablkszsec, indblkshift, level) \ 66a2cdcdd2SPaul Dagnelie (((uint64_t)datablkszsec) << (SPA_MINBLOCKSHIFT + \ 67a2cdcdd2SPaul Dagnelie (level) * (indblkshift - SPA_BLKPTRSHIFT))) 68a2cdcdd2SPaul Dagnelie 699c3fd121SMatthew Ahrens static void byteswap_record(dmu_replay_record_t *drr); 709c3fd121SMatthew Ahrens 71a2cdcdd2SPaul Dagnelie struct send_thread_arg { 72a2cdcdd2SPaul Dagnelie bqueue_t q; 73a2cdcdd2SPaul Dagnelie dsl_dataset_t *ds; /* Dataset to traverse */ 74a2cdcdd2SPaul Dagnelie uint64_t fromtxg; /* Traverse from this txg */ 75a2cdcdd2SPaul Dagnelie int flags; /* flags to pass to traverse_dataset */ 76a2cdcdd2SPaul Dagnelie int error_code; 77a2cdcdd2SPaul Dagnelie boolean_t cancel; 789c3fd121SMatthew Ahrens zbookmark_phys_t resume; 79a2cdcdd2SPaul Dagnelie }; 80a2cdcdd2SPaul Dagnelie 81a2cdcdd2SPaul Dagnelie struct send_block_record { 82a2cdcdd2SPaul Dagnelie boolean_t eos_marker; /* Marks the end of the stream */ 83a2cdcdd2SPaul Dagnelie blkptr_t bp; 84a2cdcdd2SPaul Dagnelie zbookmark_phys_t zb; 85a2cdcdd2SPaul Dagnelie uint8_t indblkshift; 86a2cdcdd2SPaul Dagnelie uint16_t datablkszsec; 87a2cdcdd2SPaul Dagnelie bqueue_node_t ln; 88a2cdcdd2SPaul Dagnelie }; 89a2cdcdd2SPaul Dagnelie 90efb80947Sahrens static int 914e3c9f44SBill Pijewski dump_bytes(dmu_sendarg_t *dsp, void *buf, int len) 92efb80947Sahrens { 939c3fd121SMatthew Ahrens dsl_dataset_t *ds = dmu_objset_ds(dsp->dsa_os); 94efb80947Sahrens ssize_t resid; /* have to get resid to get detailed errno */ 95fb09f5aaSMadhav Suresh ASSERT0(len % 8); 96efb80947Sahrens 974e3c9f44SBill Pijewski dsp->dsa_err = vn_rdwr(UIO_WRITE, dsp->dsa_vp, 98efb80947Sahrens (caddr_t)buf, len, 99efb80947Sahrens 0, UIO_SYSSPACE, FAPPEND, RLIM64_INFINITY, CRED(), &resid); 1004e3c9f44SBill Pijewski 1014e3c9f44SBill Pijewski mutex_enter(&ds->ds_sendstream_lock); 1024e3c9f44SBill Pijewski *dsp->dsa_off += len; 1034e3c9f44SBill Pijewski mutex_exit(&ds->ds_sendstream_lock); 1044e3c9f44SBill Pijewski 1054e3c9f44SBill Pijewski return (dsp->dsa_err); 106efb80947Sahrens } 107efb80947Sahrens 10898110f08SMatthew Ahrens /* 10998110f08SMatthew Ahrens * For all record types except BEGIN, fill in the checksum (overlaid in 11098110f08SMatthew Ahrens * drr_u.drr_checksum.drr_checksum). The checksum verifies everything 11198110f08SMatthew Ahrens * up to the start of the checksum itself. 11298110f08SMatthew Ahrens */ 11398110f08SMatthew Ahrens static int 11498110f08SMatthew Ahrens dump_record(dmu_sendarg_t *dsp, void *payload, int payload_len) 11598110f08SMatthew Ahrens { 11698110f08SMatthew Ahrens ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 11798110f08SMatthew Ahrens ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); 11898110f08SMatthew Ahrens fletcher_4_incremental_native(dsp->dsa_drr, 11998110f08SMatthew Ahrens offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 12098110f08SMatthew Ahrens &dsp->dsa_zc); 12198110f08SMatthew Ahrens if (dsp->dsa_drr->drr_type != DRR_BEGIN) { 12298110f08SMatthew Ahrens ASSERT(ZIO_CHECKSUM_IS_ZERO(&dsp->dsa_drr->drr_u. 12398110f08SMatthew Ahrens drr_checksum.drr_checksum)); 12498110f08SMatthew Ahrens dsp->dsa_drr->drr_u.drr_checksum.drr_checksum = dsp->dsa_zc; 12598110f08SMatthew Ahrens } 12698110f08SMatthew Ahrens fletcher_4_incremental_native(&dsp->dsa_drr-> 12798110f08SMatthew Ahrens drr_u.drr_checksum.drr_checksum, 12898110f08SMatthew Ahrens sizeof (zio_cksum_t), &dsp->dsa_zc); 12998110f08SMatthew Ahrens if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0) 13098110f08SMatthew Ahrens return (SET_ERROR(EINTR)); 13198110f08SMatthew Ahrens if (payload_len != 0) { 13298110f08SMatthew Ahrens fletcher_4_incremental_native(payload, payload_len, 13398110f08SMatthew Ahrens &dsp->dsa_zc); 13498110f08SMatthew Ahrens if (dump_bytes(dsp, payload, payload_len) != 0) 13598110f08SMatthew Ahrens return (SET_ERROR(EINTR)); 13698110f08SMatthew Ahrens } 13798110f08SMatthew Ahrens return (0); 13898110f08SMatthew Ahrens } 13998110f08SMatthew Ahrens 140*68ecb2ecSPaul Dagnelie /* 141*68ecb2ecSPaul Dagnelie * Fill in the drr_free struct, or perform aggregation if the previous record is 142*68ecb2ecSPaul Dagnelie * also a free record, and the two are adjacent. 143*68ecb2ecSPaul Dagnelie * 144*68ecb2ecSPaul Dagnelie * Note that we send free records even for a full send, because we want to be 145*68ecb2ecSPaul Dagnelie * able to receive a full send as a clone, which requires a list of all the free 146*68ecb2ecSPaul Dagnelie * and freeobject records that were generated on the source. 147*68ecb2ecSPaul Dagnelie */ 148efb80947Sahrens static int 1494e3c9f44SBill Pijewski dump_free(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset, 150efb80947Sahrens uint64_t length) 151efb80947Sahrens { 1524e3c9f44SBill Pijewski struct drr_free *drrf = &(dsp->dsa_drr->drr_u.drr_free); 1539e69d7d0SLori Alt 1542f3d8780SMatthew Ahrens /* 1552f3d8780SMatthew Ahrens * When we receive a free record, dbuf_free_range() assumes 1562f3d8780SMatthew Ahrens * that the receiving system doesn't have any dbufs in the range 1572f3d8780SMatthew Ahrens * being freed. This is always true because there is a one-record 1582f3d8780SMatthew Ahrens * constraint: we only send one WRITE record for any given 1599c3fd121SMatthew Ahrens * object,offset. We know that the one-record constraint is 1602f3d8780SMatthew Ahrens * true because we always send data in increasing order by 1612f3d8780SMatthew Ahrens * object,offset. 1622f3d8780SMatthew Ahrens * 1632f3d8780SMatthew Ahrens * If the increasing-order constraint ever changes, we should find 1642f3d8780SMatthew Ahrens * another way to assert that the one-record constraint is still 1652f3d8780SMatthew Ahrens * satisfied. 1662f3d8780SMatthew Ahrens */ 1672f3d8780SMatthew Ahrens ASSERT(object > dsp->dsa_last_data_object || 1682f3d8780SMatthew Ahrens (object == dsp->dsa_last_data_object && 1692f3d8780SMatthew Ahrens offset > dsp->dsa_last_data_offset)); 1702f3d8780SMatthew Ahrens 171534029e5SSimon Klinkert if (length != -1ULL && offset + length < offset) 172534029e5SSimon Klinkert length = -1ULL; 173534029e5SSimon Klinkert 1749e69d7d0SLori Alt /* 1759e69d7d0SLori Alt * If there is a pending op, but it's not PENDING_FREE, push it out, 1769e69d7d0SLori Alt * since free block aggregation can only be done for blocks of the 1779e69d7d0SLori Alt * same type (i.e., DRR_FREE records can only be aggregated with 1789e69d7d0SLori Alt * other DRR_FREE records. DRR_FREEOBJECTS records can only be 1799e69d7d0SLori Alt * aggregated with other DRR_FREEOBJECTS records. 1809e69d7d0SLori Alt */ 1814e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE && 1824e3c9f44SBill Pijewski dsp->dsa_pending_op != PENDING_FREE) { 18398110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 184be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 1854e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 1869e69d7d0SLori Alt } 1879e69d7d0SLori Alt 1884e3c9f44SBill Pijewski if (dsp->dsa_pending_op == PENDING_FREE) { 1899e69d7d0SLori Alt /* 1909e69d7d0SLori Alt * There should never be a PENDING_FREE if length is -1 1919e69d7d0SLori Alt * (because dump_dnode is the only place where this 1929e69d7d0SLori Alt * function is called with a -1, and only after flushing 1939e69d7d0SLori Alt * any pending record). 1949e69d7d0SLori Alt */ 1959e69d7d0SLori Alt ASSERT(length != -1ULL); 1969e69d7d0SLori Alt /* 1979e69d7d0SLori Alt * Check to see whether this free block can be aggregated 1989e69d7d0SLori Alt * with pending one. 1999e69d7d0SLori Alt */ 2009e69d7d0SLori Alt if (drrf->drr_object == object && drrf->drr_offset + 2019e69d7d0SLori Alt drrf->drr_length == offset) { 2029e69d7d0SLori Alt drrf->drr_length += length; 2039e69d7d0SLori Alt return (0); 2049e69d7d0SLori Alt } else { 2059e69d7d0SLori Alt /* not a continuation. Push out pending record */ 20698110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 207be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 2084e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 2099e69d7d0SLori Alt } 2109e69d7d0SLori Alt } 2119e69d7d0SLori Alt /* create a FREE record and make it pending */ 2124e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 2134e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_FREE; 2149e69d7d0SLori Alt drrf->drr_object = object; 2159e69d7d0SLori Alt drrf->drr_offset = offset; 2169e69d7d0SLori Alt drrf->drr_length = length; 2174e3c9f44SBill Pijewski drrf->drr_toguid = dsp->dsa_toguid; 2189e69d7d0SLori Alt if (length == -1ULL) { 21998110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 220be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 2219e69d7d0SLori Alt } else { 2224e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_FREE; 2239e69d7d0SLori Alt } 224efb80947Sahrens 225efb80947Sahrens return (0); 226efb80947Sahrens } 227efb80947Sahrens 228efb80947Sahrens static int 2295d7b4d43SMatthew Ahrens dump_write(dmu_sendarg_t *dsp, dmu_object_type_t type, 2308e714474SLori Alt uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data) 231efb80947Sahrens { 2324e3c9f44SBill Pijewski struct drr_write *drrw = &(dsp->dsa_drr->drr_u.drr_write); 2339e69d7d0SLori Alt 2342f3d8780SMatthew Ahrens /* 2352f3d8780SMatthew Ahrens * We send data in increasing object, offset order. 2362f3d8780SMatthew Ahrens * See comment in dump_free() for details. 2372f3d8780SMatthew Ahrens */ 2382f3d8780SMatthew Ahrens ASSERT(object > dsp->dsa_last_data_object || 2392f3d8780SMatthew Ahrens (object == dsp->dsa_last_data_object && 2402f3d8780SMatthew Ahrens offset > dsp->dsa_last_data_offset)); 2412f3d8780SMatthew Ahrens dsp->dsa_last_data_object = object; 2422f3d8780SMatthew Ahrens dsp->dsa_last_data_offset = offset + blksz - 1; 2438e714474SLori Alt 2449e69d7d0SLori Alt /* 2459e69d7d0SLori Alt * If there is any kind of pending aggregation (currently either 2469e69d7d0SLori Alt * a grouping of free objects or free blocks), push it out to 2479e69d7d0SLori Alt * the stream, since aggregation can't be done across operations 2489e69d7d0SLori Alt * of different types. 2499e69d7d0SLori Alt */ 2504e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) { 25198110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 252be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 2534e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 2549e69d7d0SLori Alt } 25598110f08SMatthew Ahrens /* write a WRITE record */ 2564e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 2574e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_WRITE; 2589e69d7d0SLori Alt drrw->drr_object = object; 2599e69d7d0SLori Alt drrw->drr_type = type; 2609e69d7d0SLori Alt drrw->drr_offset = offset; 2619e69d7d0SLori Alt drrw->drr_length = blksz; 2624e3c9f44SBill Pijewski drrw->drr_toguid = dsp->dsa_toguid; 263b5152584SMatthew Ahrens if (bp == NULL || BP_IS_EMBEDDED(bp)) { 2645d7b4d43SMatthew Ahrens /* 265b5152584SMatthew Ahrens * There's no pre-computed checksum for partial-block 266b5152584SMatthew Ahrens * writes or embedded BP's, so (like 267b5152584SMatthew Ahrens * fletcher4-checkummed blocks) userland will have to 268b5152584SMatthew Ahrens * compute a dedup-capable checksum itself. 2695d7b4d43SMatthew Ahrens */ 2705d7b4d43SMatthew Ahrens drrw->drr_checksumtype = ZIO_CHECKSUM_OFF; 2715d7b4d43SMatthew Ahrens } else { 2725d7b4d43SMatthew Ahrens drrw->drr_checksumtype = BP_GET_CHECKSUM(bp); 27345818ee1SMatthew Ahrens if (zio_checksum_table[drrw->drr_checksumtype].ci_flags & 27445818ee1SMatthew Ahrens ZCHECKSUM_FLAG_DEDUP) 2755d7b4d43SMatthew Ahrens drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP; 2765d7b4d43SMatthew Ahrens DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp)); 2775d7b4d43SMatthew Ahrens DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp)); 2785d7b4d43SMatthew Ahrens DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp)); 2795d7b4d43SMatthew Ahrens drrw->drr_key.ddk_cksum = bp->blk_cksum; 2805d7b4d43SMatthew Ahrens } 281efb80947Sahrens 28298110f08SMatthew Ahrens if (dump_record(dsp, data, blksz) != 0) 283be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 284efb80947Sahrens return (0); 285efb80947Sahrens } 286efb80947Sahrens 2875d7b4d43SMatthew Ahrens static int 2885d7b4d43SMatthew Ahrens dump_write_embedded(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset, 2895d7b4d43SMatthew Ahrens int blksz, const blkptr_t *bp) 2905d7b4d43SMatthew Ahrens { 2915d7b4d43SMatthew Ahrens char buf[BPE_PAYLOAD_SIZE]; 2925d7b4d43SMatthew Ahrens struct drr_write_embedded *drrw = 2935d7b4d43SMatthew Ahrens &(dsp->dsa_drr->drr_u.drr_write_embedded); 2945d7b4d43SMatthew Ahrens 2955d7b4d43SMatthew Ahrens if (dsp->dsa_pending_op != PENDING_NONE) { 29698110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 2975d7b4d43SMatthew Ahrens return (EINTR); 2985d7b4d43SMatthew Ahrens dsp->dsa_pending_op = PENDING_NONE; 2995d7b4d43SMatthew Ahrens } 3005d7b4d43SMatthew Ahrens 3015d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); 3025d7b4d43SMatthew Ahrens 3035d7b4d43SMatthew Ahrens bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 3045d7b4d43SMatthew Ahrens dsp->dsa_drr->drr_type = DRR_WRITE_EMBEDDED; 3055d7b4d43SMatthew Ahrens drrw->drr_object = object; 3065d7b4d43SMatthew Ahrens drrw->drr_offset = offset; 3075d7b4d43SMatthew Ahrens drrw->drr_length = blksz; 3085d7b4d43SMatthew Ahrens drrw->drr_toguid = dsp->dsa_toguid; 3095d7b4d43SMatthew Ahrens drrw->drr_compression = BP_GET_COMPRESS(bp); 3105d7b4d43SMatthew Ahrens drrw->drr_etype = BPE_GET_ETYPE(bp); 3115d7b4d43SMatthew Ahrens drrw->drr_lsize = BPE_GET_LSIZE(bp); 3125d7b4d43SMatthew Ahrens drrw->drr_psize = BPE_GET_PSIZE(bp); 3135d7b4d43SMatthew Ahrens 3145d7b4d43SMatthew Ahrens decode_embedded_bp_compressed(bp, buf); 3155d7b4d43SMatthew Ahrens 31698110f08SMatthew Ahrens if (dump_record(dsp, buf, P2ROUNDUP(drrw->drr_psize, 8)) != 0) 3175d7b4d43SMatthew Ahrens return (EINTR); 3185d7b4d43SMatthew Ahrens return (0); 3195d7b4d43SMatthew Ahrens } 3205d7b4d43SMatthew Ahrens 3210a586ceaSMark Shellenbaum static int 3224e3c9f44SBill Pijewski dump_spill(dmu_sendarg_t *dsp, uint64_t object, int blksz, void *data) 3230a586ceaSMark Shellenbaum { 3244e3c9f44SBill Pijewski struct drr_spill *drrs = &(dsp->dsa_drr->drr_u.drr_spill); 3250a586ceaSMark Shellenbaum 3264e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) { 32798110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 328be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3294e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 3300a586ceaSMark Shellenbaum } 3310a586ceaSMark Shellenbaum 3320a586ceaSMark Shellenbaum /* write a SPILL record */ 3334e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 3344e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_SPILL; 3350a586ceaSMark Shellenbaum drrs->drr_object = object; 3360a586ceaSMark Shellenbaum drrs->drr_length = blksz; 3374e3c9f44SBill Pijewski drrs->drr_toguid = dsp->dsa_toguid; 3380a586ceaSMark Shellenbaum 33998110f08SMatthew Ahrens if (dump_record(dsp, data, blksz) != 0) 340be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3410a586ceaSMark Shellenbaum return (0); 3420a586ceaSMark Shellenbaum } 3430a586ceaSMark Shellenbaum 344efb80947Sahrens static int 3454e3c9f44SBill Pijewski dump_freeobjects(dmu_sendarg_t *dsp, uint64_t firstobj, uint64_t numobjs) 346efb80947Sahrens { 3474e3c9f44SBill Pijewski struct drr_freeobjects *drrfo = &(dsp->dsa_drr->drr_u.drr_freeobjects); 3489e69d7d0SLori Alt 3499e69d7d0SLori Alt /* 3509e69d7d0SLori Alt * If there is a pending op, but it's not PENDING_FREEOBJECTS, 3519e69d7d0SLori Alt * push it out, since free block aggregation can only be done for 3529e69d7d0SLori Alt * blocks of the same type (i.e., DRR_FREE records can only be 3539e69d7d0SLori Alt * aggregated with other DRR_FREE records. DRR_FREEOBJECTS records 3549e69d7d0SLori Alt * can only be aggregated with other DRR_FREEOBJECTS records. 3559e69d7d0SLori Alt */ 3564e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE && 3574e3c9f44SBill Pijewski dsp->dsa_pending_op != PENDING_FREEOBJECTS) { 35898110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 359be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3604e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 3619e69d7d0SLori Alt } 3624e3c9f44SBill Pijewski if (dsp->dsa_pending_op == PENDING_FREEOBJECTS) { 3639e69d7d0SLori Alt /* 3649e69d7d0SLori Alt * See whether this free object array can be aggregated 3659e69d7d0SLori Alt * with pending one 3669e69d7d0SLori Alt */ 3679e69d7d0SLori Alt if (drrfo->drr_firstobj + drrfo->drr_numobjs == firstobj) { 3689e69d7d0SLori Alt drrfo->drr_numobjs += numobjs; 3699e69d7d0SLori Alt return (0); 3709e69d7d0SLori Alt } else { 3719e69d7d0SLori Alt /* can't be aggregated. Push out pending record */ 37298110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 373be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 3744e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 3759e69d7d0SLori Alt } 3769e69d7d0SLori Alt } 3779e69d7d0SLori Alt 378efb80947Sahrens /* write a FREEOBJECTS record */ 3794e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 3804e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_FREEOBJECTS; 3819e69d7d0SLori Alt drrfo->drr_firstobj = firstobj; 3829e69d7d0SLori Alt drrfo->drr_numobjs = numobjs; 3834e3c9f44SBill Pijewski drrfo->drr_toguid = dsp->dsa_toguid; 3849e69d7d0SLori Alt 3854e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_FREEOBJECTS; 386efb80947Sahrens 387efb80947Sahrens return (0); 388efb80947Sahrens } 389efb80947Sahrens 390efb80947Sahrens static int 3914e3c9f44SBill Pijewski dump_dnode(dmu_sendarg_t *dsp, uint64_t object, dnode_phys_t *dnp) 392efb80947Sahrens { 3934e3c9f44SBill Pijewski struct drr_object *drro = &(dsp->dsa_drr->drr_u.drr_object); 3949e69d7d0SLori Alt 3959c3fd121SMatthew Ahrens if (object < dsp->dsa_resume_object) { 3969c3fd121SMatthew Ahrens /* 3979c3fd121SMatthew Ahrens * Note: when resuming, we will visit all the dnodes in 3989c3fd121SMatthew Ahrens * the block of dnodes that we are resuming from. In 3999c3fd121SMatthew Ahrens * this case it's unnecessary to send the dnodes prior to 4009c3fd121SMatthew Ahrens * the one we are resuming from. We should be at most one 4019c3fd121SMatthew Ahrens * block's worth of dnodes behind the resume point. 4029c3fd121SMatthew Ahrens */ 4039c3fd121SMatthew Ahrens ASSERT3U(dsp->dsa_resume_object - object, <, 4049c3fd121SMatthew Ahrens 1 << (DNODE_BLOCK_SHIFT - DNODE_SHIFT)); 4059c3fd121SMatthew Ahrens return (0); 4069c3fd121SMatthew Ahrens } 4079c3fd121SMatthew Ahrens 408efb80947Sahrens if (dnp == NULL || dnp->dn_type == DMU_OT_NONE) 4094e3c9f44SBill Pijewski return (dump_freeobjects(dsp, object, 1)); 410efb80947Sahrens 4114e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) { 41298110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 413be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 4144e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 4159e69d7d0SLori Alt } 4169e69d7d0SLori Alt 417efb80947Sahrens /* write an OBJECT record */ 4184e3c9f44SBill Pijewski bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t)); 4194e3c9f44SBill Pijewski dsp->dsa_drr->drr_type = DRR_OBJECT; 4209e69d7d0SLori Alt drro->drr_object = object; 4219e69d7d0SLori Alt drro->drr_type = dnp->dn_type; 4229e69d7d0SLori Alt drro->drr_bonustype = dnp->dn_bonustype; 4239e69d7d0SLori Alt drro->drr_blksz = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT; 4249e69d7d0SLori Alt drro->drr_bonuslen = dnp->dn_bonuslen; 4259e69d7d0SLori Alt drro->drr_checksumtype = dnp->dn_checksum; 4269e69d7d0SLori Alt drro->drr_compress = dnp->dn_compress; 4274e3c9f44SBill Pijewski drro->drr_toguid = dsp->dsa_toguid; 4289e69d7d0SLori Alt 429b5152584SMatthew Ahrens if (!(dsp->dsa_featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 430b5152584SMatthew Ahrens drro->drr_blksz > SPA_OLD_MAXBLOCKSIZE) 431b5152584SMatthew Ahrens drro->drr_blksz = SPA_OLD_MAXBLOCKSIZE; 432b5152584SMatthew Ahrens 43398110f08SMatthew Ahrens if (dump_record(dsp, DN_BONUS(dnp), 43498110f08SMatthew Ahrens P2ROUNDUP(dnp->dn_bonuslen, 8)) != 0) { 435be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 43698110f08SMatthew Ahrens } 437efb80947Sahrens 4382f3d8780SMatthew Ahrens /* Free anything past the end of the file. */ 4394e3c9f44SBill Pijewski if (dump_free(dsp, object, (dnp->dn_maxblkid + 1) * 4402f3d8780SMatthew Ahrens (dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT), -1ULL) != 0) 441be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 4423b2aab18SMatthew Ahrens if (dsp->dsa_err != 0) 443be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 444efb80947Sahrens return (0); 445efb80947Sahrens } 446efb80947Sahrens 4475d7b4d43SMatthew Ahrens static boolean_t 4485d7b4d43SMatthew Ahrens backup_do_embed(dmu_sendarg_t *dsp, const blkptr_t *bp) 4495d7b4d43SMatthew Ahrens { 4505d7b4d43SMatthew Ahrens if (!BP_IS_EMBEDDED(bp)) 4515d7b4d43SMatthew Ahrens return (B_FALSE); 4525d7b4d43SMatthew Ahrens 4535d7b4d43SMatthew Ahrens /* 4545d7b4d43SMatthew Ahrens * Compression function must be legacy, or explicitly enabled. 4555d7b4d43SMatthew Ahrens */ 4565d7b4d43SMatthew Ahrens if ((BP_GET_COMPRESS(bp) >= ZIO_COMPRESS_LEGACY_FUNCTIONS && 4575d7b4d43SMatthew Ahrens !(dsp->dsa_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4))) 4585d7b4d43SMatthew Ahrens return (B_FALSE); 4595d7b4d43SMatthew Ahrens 4605d7b4d43SMatthew Ahrens /* 4615d7b4d43SMatthew Ahrens * Embed type must be explicitly enabled. 4625d7b4d43SMatthew Ahrens */ 4635d7b4d43SMatthew Ahrens switch (BPE_GET_ETYPE(bp)) { 4645d7b4d43SMatthew Ahrens case BP_EMBEDDED_TYPE_DATA: 4655d7b4d43SMatthew Ahrens if (dsp->dsa_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) 4665d7b4d43SMatthew Ahrens return (B_TRUE); 4675d7b4d43SMatthew Ahrens break; 4685d7b4d43SMatthew Ahrens default: 4695d7b4d43SMatthew Ahrens return (B_FALSE); 4705d7b4d43SMatthew Ahrens } 4715d7b4d43SMatthew Ahrens return (B_FALSE); 4725d7b4d43SMatthew Ahrens } 4735d7b4d43SMatthew Ahrens 474a2cdcdd2SPaul Dagnelie /* 475a2cdcdd2SPaul Dagnelie * This is the callback function to traverse_dataset that acts as the worker 476a2cdcdd2SPaul Dagnelie * thread for dmu_send_impl. 477a2cdcdd2SPaul Dagnelie */ 478a2cdcdd2SPaul Dagnelie /*ARGSUSED*/ 479a2cdcdd2SPaul Dagnelie static int 480a2cdcdd2SPaul Dagnelie send_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 481a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *zb, const struct dnode_phys *dnp, void *arg) 482a2cdcdd2SPaul Dagnelie { 483a2cdcdd2SPaul Dagnelie struct send_thread_arg *sta = arg; 484a2cdcdd2SPaul Dagnelie struct send_block_record *record; 485a2cdcdd2SPaul Dagnelie uint64_t record_size; 486a2cdcdd2SPaul Dagnelie int err = 0; 487efb80947Sahrens 4889c3fd121SMatthew Ahrens ASSERT(zb->zb_object == DMU_META_DNODE_OBJECT || 4899c3fd121SMatthew Ahrens zb->zb_object >= sta->resume.zb_object); 4909c3fd121SMatthew Ahrens 491a2cdcdd2SPaul Dagnelie if (sta->cancel) 492a2cdcdd2SPaul Dagnelie return (SET_ERROR(EINTR)); 493a2cdcdd2SPaul Dagnelie 494a2cdcdd2SPaul Dagnelie if (bp == NULL) { 495a2cdcdd2SPaul Dagnelie ASSERT3U(zb->zb_level, ==, ZB_DNODE_LEVEL); 496a2cdcdd2SPaul Dagnelie return (0); 497a2cdcdd2SPaul Dagnelie } else if (zb->zb_level < 0) { 498a2cdcdd2SPaul Dagnelie return (0); 499a2cdcdd2SPaul Dagnelie } 500a2cdcdd2SPaul Dagnelie 501a2cdcdd2SPaul Dagnelie record = kmem_zalloc(sizeof (struct send_block_record), KM_SLEEP); 502a2cdcdd2SPaul Dagnelie record->eos_marker = B_FALSE; 503a2cdcdd2SPaul Dagnelie record->bp = *bp; 504a2cdcdd2SPaul Dagnelie record->zb = *zb; 505a2cdcdd2SPaul Dagnelie record->indblkshift = dnp->dn_indblkshift; 506a2cdcdd2SPaul Dagnelie record->datablkszsec = dnp->dn_datablkszsec; 507a2cdcdd2SPaul Dagnelie record_size = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT; 508a2cdcdd2SPaul Dagnelie bqueue_enqueue(&sta->q, record, record_size); 509a2cdcdd2SPaul Dagnelie 510a2cdcdd2SPaul Dagnelie return (err); 511a2cdcdd2SPaul Dagnelie } 512a2cdcdd2SPaul Dagnelie 513a2cdcdd2SPaul Dagnelie /* 514a2cdcdd2SPaul Dagnelie * This function kicks off the traverse_dataset. It also handles setting the 515a2cdcdd2SPaul Dagnelie * error code of the thread in case something goes wrong, and pushes the End of 516a2cdcdd2SPaul Dagnelie * Stream record when the traverse_dataset call has finished. If there is no 517a2cdcdd2SPaul Dagnelie * dataset to traverse, the thread immediately pushes End of Stream marker. 518a2cdcdd2SPaul Dagnelie */ 519a2cdcdd2SPaul Dagnelie static void 520a2cdcdd2SPaul Dagnelie send_traverse_thread(void *arg) 521a2cdcdd2SPaul Dagnelie { 522a2cdcdd2SPaul Dagnelie struct send_thread_arg *st_arg = arg; 523a2cdcdd2SPaul Dagnelie int err; 524a2cdcdd2SPaul Dagnelie struct send_block_record *data; 525a2cdcdd2SPaul Dagnelie 526a2cdcdd2SPaul Dagnelie if (st_arg->ds != NULL) { 5279c3fd121SMatthew Ahrens err = traverse_dataset_resume(st_arg->ds, 5289c3fd121SMatthew Ahrens st_arg->fromtxg, &st_arg->resume, 5299c3fd121SMatthew Ahrens st_arg->flags, send_cb, st_arg); 5309c3fd121SMatthew Ahrens 531a2cdcdd2SPaul Dagnelie if (err != EINTR) 532a2cdcdd2SPaul Dagnelie st_arg->error_code = err; 533a2cdcdd2SPaul Dagnelie } 534a2cdcdd2SPaul Dagnelie data = kmem_zalloc(sizeof (*data), KM_SLEEP); 535a2cdcdd2SPaul Dagnelie data->eos_marker = B_TRUE; 536a2cdcdd2SPaul Dagnelie bqueue_enqueue(&st_arg->q, data, 1); 537a2cdcdd2SPaul Dagnelie } 538a2cdcdd2SPaul Dagnelie 539a2cdcdd2SPaul Dagnelie /* 540a2cdcdd2SPaul Dagnelie * This function actually handles figuring out what kind of record needs to be 541a2cdcdd2SPaul Dagnelie * dumped, reading the data (which has hopefully been prefetched), and calling 542a2cdcdd2SPaul Dagnelie * the appropriate helper function. 543a2cdcdd2SPaul Dagnelie */ 544efb80947Sahrens static int 545a2cdcdd2SPaul Dagnelie do_dump(dmu_sendarg_t *dsa, struct send_block_record *data) 546efb80947Sahrens { 547a2cdcdd2SPaul Dagnelie dsl_dataset_t *ds = dmu_objset_ds(dsa->dsa_os); 548a2cdcdd2SPaul Dagnelie const blkptr_t *bp = &data->bp; 549a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *zb = &data->zb; 550a2cdcdd2SPaul Dagnelie uint8_t indblkshift = data->indblkshift; 551a2cdcdd2SPaul Dagnelie uint16_t dblkszsec = data->datablkszsec; 552a2cdcdd2SPaul Dagnelie spa_t *spa = ds->ds_dir->dd_pool->dp_spa; 553efb80947Sahrens dmu_object_type_t type = bp ? BP_GET_TYPE(bp) : DMU_OT_NONE; 554efb80947Sahrens int err = 0; 555efb80947Sahrens 556a2cdcdd2SPaul Dagnelie ASSERT3U(zb->zb_level, >=, 0); 557efb80947Sahrens 5589c3fd121SMatthew Ahrens ASSERT(zb->zb_object == DMU_META_DNODE_OBJECT || 5599c3fd121SMatthew Ahrens zb->zb_object >= dsa->dsa_resume_object); 5609c3fd121SMatthew Ahrens 561b24ab676SJeff Bonwick if (zb->zb_object != DMU_META_DNODE_OBJECT && 562b24ab676SJeff Bonwick DMU_OBJECT_IS_SPECIAL(zb->zb_object)) { 56314843421SMatthew Ahrens return (0); 56443466aaeSMax Grossman } else if (BP_IS_HOLE(bp) && 56543466aaeSMax Grossman zb->zb_object == DMU_META_DNODE_OBJECT) { 566a2cdcdd2SPaul Dagnelie uint64_t span = BP_SPAN(dblkszsec, indblkshift, zb->zb_level); 56788b7b0f2SMatthew Ahrens uint64_t dnobj = (zb->zb_blkid * span) >> DNODE_SHIFT; 568a2cdcdd2SPaul Dagnelie err = dump_freeobjects(dsa, dnobj, span >> DNODE_SHIFT); 56943466aaeSMax Grossman } else if (BP_IS_HOLE(bp)) { 570a2cdcdd2SPaul Dagnelie uint64_t span = BP_SPAN(dblkszsec, indblkshift, zb->zb_level); 571a2cdcdd2SPaul Dagnelie uint64_t offset = zb->zb_blkid * span; 572a2cdcdd2SPaul Dagnelie err = dump_free(dsa, zb->zb_object, offset, span); 57388b7b0f2SMatthew Ahrens } else if (zb->zb_level > 0 || type == DMU_OT_OBJSET) { 57488b7b0f2SMatthew Ahrens return (0); 57588b7b0f2SMatthew Ahrens } else if (type == DMU_OT_DNODE) { 576efb80947Sahrens int blksz = BP_GET_LSIZE(bp); 5777adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 57888b7b0f2SMatthew Ahrens arc_buf_t *abuf; 579efb80947Sahrens 580a2cdcdd2SPaul Dagnelie ASSERT0(zb->zb_level); 581a2cdcdd2SPaul Dagnelie 5821b912ec7SGeorge Wilson if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf, 5831b912ec7SGeorge Wilson ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, 5841b912ec7SGeorge Wilson &aflags, zb) != 0) 585be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 58688b7b0f2SMatthew Ahrens 587a2cdcdd2SPaul Dagnelie dnode_phys_t *blk = abuf->b_data; 588a2cdcdd2SPaul Dagnelie uint64_t dnobj = zb->zb_blkid * (blksz >> DNODE_SHIFT); 589a2cdcdd2SPaul Dagnelie for (int i = 0; i < blksz >> DNODE_SHIFT; i++) { 590a2cdcdd2SPaul Dagnelie err = dump_dnode(dsa, dnobj + i, blk + i); 5913b2aab18SMatthew Ahrens if (err != 0) 592efb80947Sahrens break; 593efb80947Sahrens } 59488b7b0f2SMatthew Ahrens (void) arc_buf_remove_ref(abuf, &abuf); 5950a586ceaSMark Shellenbaum } else if (type == DMU_OT_SA) { 5967adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 5970a586ceaSMark Shellenbaum arc_buf_t *abuf; 5980a586ceaSMark Shellenbaum int blksz = BP_GET_LSIZE(bp); 5990a586ceaSMark Shellenbaum 6001b912ec7SGeorge Wilson if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf, 6011b912ec7SGeorge Wilson ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, 6021b912ec7SGeorge Wilson &aflags, zb) != 0) 603be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 6040a586ceaSMark Shellenbaum 605a2cdcdd2SPaul Dagnelie err = dump_spill(dsa, zb->zb_object, blksz, abuf->b_data); 6060a586ceaSMark Shellenbaum (void) arc_buf_remove_ref(abuf, &abuf); 607a2cdcdd2SPaul Dagnelie } else if (backup_do_embed(dsa, bp)) { 6085d7b4d43SMatthew Ahrens /* it's an embedded level-0 block of a regular object */ 609a2cdcdd2SPaul Dagnelie int blksz = dblkszsec << SPA_MINBLOCKSHIFT; 610a2cdcdd2SPaul Dagnelie ASSERT0(zb->zb_level); 611a2cdcdd2SPaul Dagnelie err = dump_write_embedded(dsa, zb->zb_object, 6125d7b4d43SMatthew Ahrens zb->zb_blkid * blksz, blksz, bp); 613a2cdcdd2SPaul Dagnelie } else { 614a2cdcdd2SPaul Dagnelie /* it's a level-0 block of a regular object */ 6157adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 61688b7b0f2SMatthew Ahrens arc_buf_t *abuf; 617a2cdcdd2SPaul Dagnelie int blksz = dblkszsec << SPA_MINBLOCKSHIFT; 618b5152584SMatthew Ahrens uint64_t offset; 61988b7b0f2SMatthew Ahrens 62078f17100SMatthew Ahrens ASSERT0(zb->zb_level); 6219c3fd121SMatthew Ahrens ASSERT(zb->zb_object > dsa->dsa_resume_object || 6229c3fd121SMatthew Ahrens (zb->zb_object == dsa->dsa_resume_object && 6239c3fd121SMatthew Ahrens zb->zb_blkid * blksz >= dsa->dsa_resume_offset)); 6249c3fd121SMatthew Ahrens 6251b912ec7SGeorge Wilson if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf, 6261b912ec7SGeorge Wilson ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, 6271b912ec7SGeorge Wilson &aflags, zb) != 0) { 62819b94df9SMatthew Ahrens if (zfs_send_corrupt_data) { 62919b94df9SMatthew Ahrens /* Send a block filled with 0x"zfs badd bloc" */ 63019b94df9SMatthew Ahrens abuf = arc_buf_alloc(spa, blksz, &abuf, 63119b94df9SMatthew Ahrens ARC_BUFC_DATA); 63219b94df9SMatthew Ahrens uint64_t *ptr; 63319b94df9SMatthew Ahrens for (ptr = abuf->b_data; 63419b94df9SMatthew Ahrens (char *)ptr < (char *)abuf->b_data + blksz; 63519b94df9SMatthew Ahrens ptr++) 6368c76e076SBrian Behlendorf *ptr = 0x2f5baddb10cULL; 63719b94df9SMatthew Ahrens } else { 638be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 63919b94df9SMatthew Ahrens } 64019b94df9SMatthew Ahrens } 64188b7b0f2SMatthew Ahrens 642b5152584SMatthew Ahrens offset = zb->zb_blkid * blksz; 643b5152584SMatthew Ahrens 644a2cdcdd2SPaul Dagnelie if (!(dsa->dsa_featureflags & 645b5152584SMatthew Ahrens DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 646b5152584SMatthew Ahrens blksz > SPA_OLD_MAXBLOCKSIZE) { 647b5152584SMatthew Ahrens char *buf = abuf->b_data; 648b5152584SMatthew Ahrens while (blksz > 0 && err == 0) { 649b5152584SMatthew Ahrens int n = MIN(blksz, SPA_OLD_MAXBLOCKSIZE); 650a2cdcdd2SPaul Dagnelie err = dump_write(dsa, type, zb->zb_object, 651b5152584SMatthew Ahrens offset, n, NULL, buf); 652b5152584SMatthew Ahrens offset += n; 653b5152584SMatthew Ahrens buf += n; 654b5152584SMatthew Ahrens blksz -= n; 655b5152584SMatthew Ahrens } 656b5152584SMatthew Ahrens } else { 657a2cdcdd2SPaul Dagnelie err = dump_write(dsa, type, zb->zb_object, 658b5152584SMatthew Ahrens offset, blksz, bp, abuf->b_data); 659b5152584SMatthew Ahrens } 66088b7b0f2SMatthew Ahrens (void) arc_buf_remove_ref(abuf, &abuf); 661efb80947Sahrens } 662efb80947Sahrens 663efb80947Sahrens ASSERT(err == 0 || err == EINTR); 664efb80947Sahrens return (err); 665efb80947Sahrens } 666efb80947Sahrens 6674445fffbSMatthew Ahrens /* 668a2cdcdd2SPaul Dagnelie * Pop the new data off the queue, and free the old data. 669a2cdcdd2SPaul Dagnelie */ 670a2cdcdd2SPaul Dagnelie static struct send_block_record * 671a2cdcdd2SPaul Dagnelie get_next_record(bqueue_t *bq, struct send_block_record *data) 672a2cdcdd2SPaul Dagnelie { 673a2cdcdd2SPaul Dagnelie struct send_block_record *tmp = bqueue_dequeue(bq); 674a2cdcdd2SPaul Dagnelie kmem_free(data, sizeof (*data)); 675a2cdcdd2SPaul Dagnelie return (tmp); 676a2cdcdd2SPaul Dagnelie } 677a2cdcdd2SPaul Dagnelie 678a2cdcdd2SPaul Dagnelie /* 679a2cdcdd2SPaul Dagnelie * Actually do the bulk of the work in a zfs send. 680a2cdcdd2SPaul Dagnelie * 681a2cdcdd2SPaul Dagnelie * Note: Releases dp using the specified tag. 6824445fffbSMatthew Ahrens */ 6833b2aab18SMatthew Ahrens static int 684a2cdcdd2SPaul Dagnelie dmu_send_impl(void *tag, dsl_pool_t *dp, dsl_dataset_t *to_ds, 6859c3fd121SMatthew Ahrens zfs_bookmark_phys_t *ancestor_zb, 6869c3fd121SMatthew Ahrens boolean_t is_clone, boolean_t embedok, boolean_t large_block_ok, int outfd, 6879c3fd121SMatthew Ahrens uint64_t resumeobj, uint64_t resumeoff, 6889c3fd121SMatthew Ahrens vnode_t *vp, offset_t *off) 689efb80947Sahrens { 6903b2aab18SMatthew Ahrens objset_t *os; 691efb80947Sahrens dmu_replay_record_t *drr; 6924e3c9f44SBill Pijewski dmu_sendarg_t *dsp; 693efb80947Sahrens int err; 6943cb34c60Sahrens uint64_t fromtxg = 0; 6955d7b4d43SMatthew Ahrens uint64_t featureflags = 0; 6969c3fd121SMatthew Ahrens struct send_thread_arg to_arg = { 0 }; 697efb80947Sahrens 698a2cdcdd2SPaul Dagnelie err = dmu_objset_from_ds(to_ds, &os); 6993b2aab18SMatthew Ahrens if (err != 0) { 7003b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 7013b2aab18SMatthew Ahrens return (err); 7023b2aab18SMatthew Ahrens } 703efb80947Sahrens 704efb80947Sahrens drr = kmem_zalloc(sizeof (dmu_replay_record_t), KM_SLEEP); 705efb80947Sahrens drr->drr_type = DRR_BEGIN; 706efb80947Sahrens drr->drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC; 7079e69d7d0SLori Alt DMU_SET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo, 7089e69d7d0SLori Alt DMU_SUBSTREAM); 709dc7cd546SMark Shellenbaum 710dc7cd546SMark Shellenbaum #ifdef _KERNEL 7113b2aab18SMatthew Ahrens if (dmu_objset_type(os) == DMU_OST_ZFS) { 712dc7cd546SMark Shellenbaum uint64_t version; 7133b2aab18SMatthew Ahrens if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &version) != 0) { 7144e3c9f44SBill Pijewski kmem_free(drr, sizeof (dmu_replay_record_t)); 7153b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 716be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 7174e3c9f44SBill Pijewski } 7183b2aab18SMatthew Ahrens if (version >= ZPL_VERSION_SA) { 7195d7b4d43SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_SA_SPILL; 720dc7cd546SMark Shellenbaum } 721dc7cd546SMark Shellenbaum } 722dc7cd546SMark Shellenbaum #endif 723dc7cd546SMark Shellenbaum 724ca0cc391SMatthew Ahrens if (large_block_ok && to_ds->ds_feature_inuse[SPA_FEATURE_LARGE_BLOCKS]) 725b5152584SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_LARGE_BLOCKS; 7265d7b4d43SMatthew Ahrens if (embedok && 7275d7b4d43SMatthew Ahrens spa_feature_is_active(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) { 7285d7b4d43SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_EMBED_DATA; 7295d7b4d43SMatthew Ahrens if (spa_feature_is_active(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 7305d7b4d43SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_EMBED_DATA_LZ4; 7315d7b4d43SMatthew Ahrens } 7325d7b4d43SMatthew Ahrens 7339c3fd121SMatthew Ahrens if (resumeobj != 0 || resumeoff != 0) { 7349c3fd121SMatthew Ahrens featureflags |= DMU_BACKUP_FEATURE_RESUMING; 7359c3fd121SMatthew Ahrens } 7369c3fd121SMatthew Ahrens 7375d7b4d43SMatthew Ahrens DMU_SET_FEATUREFLAGS(drr->drr_u.drr_begin.drr_versioninfo, 7385d7b4d43SMatthew Ahrens featureflags); 7395d7b4d43SMatthew Ahrens 740efb80947Sahrens drr->drr_u.drr_begin.drr_creation_time = 741a2cdcdd2SPaul Dagnelie dsl_dataset_phys(to_ds)->ds_creation_time; 7423b2aab18SMatthew Ahrens drr->drr_u.drr_begin.drr_type = dmu_objset_type(os); 74378f17100SMatthew Ahrens if (is_clone) 7443cb34c60Sahrens drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CLONE; 745a2cdcdd2SPaul Dagnelie drr->drr_u.drr_begin.drr_toguid = dsl_dataset_phys(to_ds)->ds_guid; 746a2cdcdd2SPaul Dagnelie if (dsl_dataset_phys(to_ds)->ds_flags & DS_FLAG_CI_DATASET) 747ab04eb8eStimh drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_CI_DATA; 748*68ecb2ecSPaul Dagnelie drr->drr_u.drr_begin.drr_flags |= DRR_FLAG_FREERECORDS; 749ab04eb8eStimh 750a2cdcdd2SPaul Dagnelie if (ancestor_zb != NULL) { 751a2cdcdd2SPaul Dagnelie drr->drr_u.drr_begin.drr_fromguid = 752a2cdcdd2SPaul Dagnelie ancestor_zb->zbm_guid; 753a2cdcdd2SPaul Dagnelie fromtxg = ancestor_zb->zbm_creation_txg; 75478f17100SMatthew Ahrens } 755a2cdcdd2SPaul Dagnelie dsl_dataset_name(to_ds, drr->drr_u.drr_begin.drr_toname); 756a2cdcdd2SPaul Dagnelie if (!to_ds->ds_is_snapshot) { 75778f17100SMatthew Ahrens (void) strlcat(drr->drr_u.drr_begin.drr_toname, "@--head--", 75878f17100SMatthew Ahrens sizeof (drr->drr_u.drr_begin.drr_toname)); 7593b2aab18SMatthew Ahrens } 7603cb34c60Sahrens 7614e3c9f44SBill Pijewski dsp = kmem_zalloc(sizeof (dmu_sendarg_t), KM_SLEEP); 7624e3c9f44SBill Pijewski 7634e3c9f44SBill Pijewski dsp->dsa_drr = drr; 7644e3c9f44SBill Pijewski dsp->dsa_vp = vp; 7654e3c9f44SBill Pijewski dsp->dsa_outfd = outfd; 7664e3c9f44SBill Pijewski dsp->dsa_proc = curproc; 7673b2aab18SMatthew Ahrens dsp->dsa_os = os; 7684e3c9f44SBill Pijewski dsp->dsa_off = off; 769a2cdcdd2SPaul Dagnelie dsp->dsa_toguid = dsl_dataset_phys(to_ds)->ds_guid; 7704e3c9f44SBill Pijewski dsp->dsa_pending_op = PENDING_NONE; 7715d7b4d43SMatthew Ahrens dsp->dsa_featureflags = featureflags; 7729c3fd121SMatthew Ahrens dsp->dsa_resume_object = resumeobj; 7739c3fd121SMatthew Ahrens dsp->dsa_resume_offset = resumeoff; 7744e3c9f44SBill Pijewski 775a2cdcdd2SPaul Dagnelie mutex_enter(&to_ds->ds_sendstream_lock); 776a2cdcdd2SPaul Dagnelie list_insert_head(&to_ds->ds_sendstreams, dsp); 777a2cdcdd2SPaul Dagnelie mutex_exit(&to_ds->ds_sendstream_lock); 7784e3c9f44SBill Pijewski 779a2cdcdd2SPaul Dagnelie dsl_dataset_long_hold(to_ds, FTAG); 780de8d9cffSMatthew Ahrens dsl_pool_rele(dp, tag); 781de8d9cffSMatthew Ahrens 7829c3fd121SMatthew Ahrens void *payload = NULL; 7839c3fd121SMatthew Ahrens size_t payload_len = 0; 7849c3fd121SMatthew Ahrens if (resumeobj != 0 || resumeoff != 0) { 7859c3fd121SMatthew Ahrens dmu_object_info_t to_doi; 7869c3fd121SMatthew Ahrens err = dmu_object_info(os, resumeobj, &to_doi); 7879c3fd121SMatthew Ahrens if (err != 0) 7889c3fd121SMatthew Ahrens goto out; 7899c3fd121SMatthew Ahrens SET_BOOKMARK(&to_arg.resume, to_ds->ds_object, resumeobj, 0, 7909c3fd121SMatthew Ahrens resumeoff / to_doi.doi_data_block_size); 7919c3fd121SMatthew Ahrens 7929c3fd121SMatthew Ahrens nvlist_t *nvl = fnvlist_alloc(); 7939c3fd121SMatthew Ahrens fnvlist_add_uint64(nvl, "resume_object", resumeobj); 7949c3fd121SMatthew Ahrens fnvlist_add_uint64(nvl, "resume_offset", resumeoff); 7959c3fd121SMatthew Ahrens payload = fnvlist_pack(nvl, &payload_len); 7969c3fd121SMatthew Ahrens drr->drr_payloadlen = payload_len; 7979c3fd121SMatthew Ahrens fnvlist_free(nvl); 7989c3fd121SMatthew Ahrens } 7999c3fd121SMatthew Ahrens 8009c3fd121SMatthew Ahrens err = dump_record(dsp, payload, payload_len); 8019c3fd121SMatthew Ahrens fnvlist_pack_free(payload, payload_len); 8029c3fd121SMatthew Ahrens if (err != 0) { 8034e3c9f44SBill Pijewski err = dsp->dsa_err; 8044e3c9f44SBill Pijewski goto out; 805efb80947Sahrens } 806efb80947Sahrens 807a2cdcdd2SPaul Dagnelie err = bqueue_init(&to_arg.q, zfs_send_queue_length, 808a2cdcdd2SPaul Dagnelie offsetof(struct send_block_record, ln)); 809a2cdcdd2SPaul Dagnelie to_arg.error_code = 0; 810a2cdcdd2SPaul Dagnelie to_arg.cancel = B_FALSE; 811a2cdcdd2SPaul Dagnelie to_arg.ds = to_ds; 812a2cdcdd2SPaul Dagnelie to_arg.fromtxg = fromtxg; 813a2cdcdd2SPaul Dagnelie to_arg.flags = TRAVERSE_PRE | TRAVERSE_PREFETCH; 814a2cdcdd2SPaul Dagnelie (void) thread_create(NULL, 0, send_traverse_thread, &to_arg, 0, curproc, 815a2cdcdd2SPaul Dagnelie TS_RUN, minclsyspri); 816a2cdcdd2SPaul Dagnelie 817a2cdcdd2SPaul Dagnelie struct send_block_record *to_data; 818a2cdcdd2SPaul Dagnelie to_data = bqueue_dequeue(&to_arg.q); 819a2cdcdd2SPaul Dagnelie 820a2cdcdd2SPaul Dagnelie while (!to_data->eos_marker && err == 0) { 821a2cdcdd2SPaul Dagnelie err = do_dump(dsp, to_data); 822a2cdcdd2SPaul Dagnelie to_data = get_next_record(&to_arg.q, to_data); 823a2cdcdd2SPaul Dagnelie if (issig(JUSTLOOKING) && issig(FORREAL)) 824a2cdcdd2SPaul Dagnelie err = EINTR; 825a2cdcdd2SPaul Dagnelie } 826a2cdcdd2SPaul Dagnelie 827a2cdcdd2SPaul Dagnelie if (err != 0) { 828a2cdcdd2SPaul Dagnelie to_arg.cancel = B_TRUE; 829a2cdcdd2SPaul Dagnelie while (!to_data->eos_marker) { 830a2cdcdd2SPaul Dagnelie to_data = get_next_record(&to_arg.q, to_data); 831a2cdcdd2SPaul Dagnelie } 832a2cdcdd2SPaul Dagnelie } 833a2cdcdd2SPaul Dagnelie kmem_free(to_data, sizeof (*to_data)); 834a2cdcdd2SPaul Dagnelie 835a2cdcdd2SPaul Dagnelie bqueue_destroy(&to_arg.q); 836a2cdcdd2SPaul Dagnelie 837a2cdcdd2SPaul Dagnelie if (err == 0 && to_arg.error_code != 0) 838a2cdcdd2SPaul Dagnelie err = to_arg.error_code; 839a2cdcdd2SPaul Dagnelie 840a2cdcdd2SPaul Dagnelie if (err != 0) 841a2cdcdd2SPaul Dagnelie goto out; 842efb80947Sahrens 8434e3c9f44SBill Pijewski if (dsp->dsa_pending_op != PENDING_NONE) 84498110f08SMatthew Ahrens if (dump_record(dsp, NULL, 0) != 0) 845be6fd75aSMatthew Ahrens err = SET_ERROR(EINTR); 8469e69d7d0SLori Alt 8473b2aab18SMatthew Ahrens if (err != 0) { 8483b2aab18SMatthew Ahrens if (err == EINTR && dsp->dsa_err != 0) 8494e3c9f44SBill Pijewski err = dsp->dsa_err; 8504e3c9f44SBill Pijewski goto out; 851efb80947Sahrens } 852efb80947Sahrens 853efb80947Sahrens bzero(drr, sizeof (dmu_replay_record_t)); 854efb80947Sahrens drr->drr_type = DRR_END; 8554e3c9f44SBill Pijewski drr->drr_u.drr_end.drr_checksum = dsp->dsa_zc; 8564e3c9f44SBill Pijewski drr->drr_u.drr_end.drr_toguid = dsp->dsa_toguid; 857efb80947Sahrens 858a2cdcdd2SPaul Dagnelie if (dump_record(dsp, NULL, 0) != 0) 8594e3c9f44SBill Pijewski err = dsp->dsa_err; 860efb80947Sahrens 8614e3c9f44SBill Pijewski out: 862a2cdcdd2SPaul Dagnelie mutex_enter(&to_ds->ds_sendstream_lock); 863a2cdcdd2SPaul Dagnelie list_remove(&to_ds->ds_sendstreams, dsp); 864a2cdcdd2SPaul Dagnelie mutex_exit(&to_ds->ds_sendstream_lock); 8654e3c9f44SBill Pijewski 866efb80947Sahrens kmem_free(drr, sizeof (dmu_replay_record_t)); 8674e3c9f44SBill Pijewski kmem_free(dsp, sizeof (dmu_sendarg_t)); 868efb80947Sahrens 869a2cdcdd2SPaul Dagnelie dsl_dataset_long_rele(to_ds, FTAG); 8703b2aab18SMatthew Ahrens 8714e3c9f44SBill Pijewski return (err); 872efb80947Sahrens } 873efb80947Sahrens 87419b94df9SMatthew Ahrens int 8753b2aab18SMatthew Ahrens dmu_send_obj(const char *pool, uint64_t tosnap, uint64_t fromsnap, 876b5152584SMatthew Ahrens boolean_t embedok, boolean_t large_block_ok, 877b5152584SMatthew Ahrens int outfd, vnode_t *vp, offset_t *off) 8783b2aab18SMatthew Ahrens { 8793b2aab18SMatthew Ahrens dsl_pool_t *dp; 8803b2aab18SMatthew Ahrens dsl_dataset_t *ds; 8813b2aab18SMatthew Ahrens dsl_dataset_t *fromds = NULL; 8823b2aab18SMatthew Ahrens int err; 8833b2aab18SMatthew Ahrens 8843b2aab18SMatthew Ahrens err = dsl_pool_hold(pool, FTAG, &dp); 8853b2aab18SMatthew Ahrens if (err != 0) 8863b2aab18SMatthew Ahrens return (err); 8873b2aab18SMatthew Ahrens 8883b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, tosnap, FTAG, &ds); 8893b2aab18SMatthew Ahrens if (err != 0) { 8903b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 8913b2aab18SMatthew Ahrens return (err); 8923b2aab18SMatthew Ahrens } 8933b2aab18SMatthew Ahrens 8943b2aab18SMatthew Ahrens if (fromsnap != 0) { 89578f17100SMatthew Ahrens zfs_bookmark_phys_t zb; 89678f17100SMatthew Ahrens boolean_t is_clone; 89778f17100SMatthew Ahrens 8983b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, fromsnap, FTAG, &fromds); 8993b2aab18SMatthew Ahrens if (err != 0) { 9003b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9013b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 9023b2aab18SMatthew Ahrens return (err); 9033b2aab18SMatthew Ahrens } 90478f17100SMatthew Ahrens if (!dsl_dataset_is_before(ds, fromds, 0)) 90578f17100SMatthew Ahrens err = SET_ERROR(EXDEV); 906c1379625SJustin T. Gibbs zb.zbm_creation_time = 907c1379625SJustin T. Gibbs dsl_dataset_phys(fromds)->ds_creation_time; 908c1379625SJustin T. Gibbs zb.zbm_creation_txg = dsl_dataset_phys(fromds)->ds_creation_txg; 909c1379625SJustin T. Gibbs zb.zbm_guid = dsl_dataset_phys(fromds)->ds_guid; 91078f17100SMatthew Ahrens is_clone = (fromds->ds_dir != ds->ds_dir); 91178f17100SMatthew Ahrens dsl_dataset_rele(fromds, FTAG); 912b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone, 9139c3fd121SMatthew Ahrens embedok, large_block_ok, outfd, 0, 0, vp, off); 91478f17100SMatthew Ahrens } else { 915b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE, 9169c3fd121SMatthew Ahrens embedok, large_block_ok, outfd, 0, 0, vp, off); 9173b2aab18SMatthew Ahrens } 91878f17100SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 91978f17100SMatthew Ahrens return (err); 9203b2aab18SMatthew Ahrens } 9213b2aab18SMatthew Ahrens 9223b2aab18SMatthew Ahrens int 9239c3fd121SMatthew Ahrens dmu_send(const char *tosnap, const char *fromsnap, boolean_t embedok, 9249c3fd121SMatthew Ahrens boolean_t large_block_ok, int outfd, uint64_t resumeobj, uint64_t resumeoff, 9259c3fd121SMatthew Ahrens vnode_t *vp, offset_t *off) 9263b2aab18SMatthew Ahrens { 9273b2aab18SMatthew Ahrens dsl_pool_t *dp; 9283b2aab18SMatthew Ahrens dsl_dataset_t *ds; 9293b2aab18SMatthew Ahrens int err; 93078f17100SMatthew Ahrens boolean_t owned = B_FALSE; 9313b2aab18SMatthew Ahrens 93278f17100SMatthew Ahrens if (fromsnap != NULL && strpbrk(fromsnap, "@#") == NULL) 933be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 9343b2aab18SMatthew Ahrens 9353b2aab18SMatthew Ahrens err = dsl_pool_hold(tosnap, FTAG, &dp); 9363b2aab18SMatthew Ahrens if (err != 0) 9373b2aab18SMatthew Ahrens return (err); 9383b2aab18SMatthew Ahrens 93978f17100SMatthew Ahrens if (strchr(tosnap, '@') == NULL && spa_writeable(dp->dp_spa)) { 94078f17100SMatthew Ahrens /* 94178f17100SMatthew Ahrens * We are sending a filesystem or volume. Ensure 94278f17100SMatthew Ahrens * that it doesn't change by owning the dataset. 94378f17100SMatthew Ahrens */ 94478f17100SMatthew Ahrens err = dsl_dataset_own(dp, tosnap, FTAG, &ds); 94578f17100SMatthew Ahrens owned = B_TRUE; 94678f17100SMatthew Ahrens } else { 94778f17100SMatthew Ahrens err = dsl_dataset_hold(dp, tosnap, FTAG, &ds); 94878f17100SMatthew Ahrens } 9493b2aab18SMatthew Ahrens if (err != 0) { 9503b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 9513b2aab18SMatthew Ahrens return (err); 9523b2aab18SMatthew Ahrens } 9533b2aab18SMatthew Ahrens 9543b2aab18SMatthew Ahrens if (fromsnap != NULL) { 95578f17100SMatthew Ahrens zfs_bookmark_phys_t zb; 95678f17100SMatthew Ahrens boolean_t is_clone = B_FALSE; 95778f17100SMatthew Ahrens int fsnamelen = strchr(tosnap, '@') - tosnap; 95878f17100SMatthew Ahrens 95978f17100SMatthew Ahrens /* 96078f17100SMatthew Ahrens * If the fromsnap is in a different filesystem, then 96178f17100SMatthew Ahrens * mark the send stream as a clone. 96278f17100SMatthew Ahrens */ 96378f17100SMatthew Ahrens if (strncmp(tosnap, fromsnap, fsnamelen) != 0 || 96478f17100SMatthew Ahrens (fromsnap[fsnamelen] != '@' && 96578f17100SMatthew Ahrens fromsnap[fsnamelen] != '#')) { 96678f17100SMatthew Ahrens is_clone = B_TRUE; 96778f17100SMatthew Ahrens } 96878f17100SMatthew Ahrens 96978f17100SMatthew Ahrens if (strchr(fromsnap, '@')) { 97078f17100SMatthew Ahrens dsl_dataset_t *fromds; 97178f17100SMatthew Ahrens err = dsl_dataset_hold(dp, fromsnap, FTAG, &fromds); 97278f17100SMatthew Ahrens if (err == 0) { 97378f17100SMatthew Ahrens if (!dsl_dataset_is_before(ds, fromds, 0)) 97478f17100SMatthew Ahrens err = SET_ERROR(EXDEV); 97578f17100SMatthew Ahrens zb.zbm_creation_time = 976c1379625SJustin T. Gibbs dsl_dataset_phys(fromds)->ds_creation_time; 97778f17100SMatthew Ahrens zb.zbm_creation_txg = 978c1379625SJustin T. Gibbs dsl_dataset_phys(fromds)->ds_creation_txg; 979c1379625SJustin T. Gibbs zb.zbm_guid = dsl_dataset_phys(fromds)->ds_guid; 98078f17100SMatthew Ahrens is_clone = (ds->ds_dir != fromds->ds_dir); 98178f17100SMatthew Ahrens dsl_dataset_rele(fromds, FTAG); 98278f17100SMatthew Ahrens } 98378f17100SMatthew Ahrens } else { 98478f17100SMatthew Ahrens err = dsl_bookmark_lookup(dp, fromsnap, ds, &zb); 98578f17100SMatthew Ahrens } 9863b2aab18SMatthew Ahrens if (err != 0) { 9873b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9883b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 9893b2aab18SMatthew Ahrens return (err); 9903b2aab18SMatthew Ahrens } 991b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone, 9929c3fd121SMatthew Ahrens embedok, large_block_ok, 9939c3fd121SMatthew Ahrens outfd, resumeobj, resumeoff, vp, off); 99478f17100SMatthew Ahrens } else { 995b5152584SMatthew Ahrens err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE, 9969c3fd121SMatthew Ahrens embedok, large_block_ok, 9979c3fd121SMatthew Ahrens outfd, resumeobj, resumeoff, vp, off); 9983b2aab18SMatthew Ahrens } 99978f17100SMatthew Ahrens if (owned) 100078f17100SMatthew Ahrens dsl_dataset_disown(ds, FTAG); 100178f17100SMatthew Ahrens else 100278f17100SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 100378f17100SMatthew Ahrens return (err); 10043b2aab18SMatthew Ahrens } 10053b2aab18SMatthew Ahrens 1006643da460SMax Grossman static int 1007643da460SMax Grossman dmu_adjust_send_estimate_for_indirects(dsl_dataset_t *ds, uint64_t size, 1008643da460SMax Grossman uint64_t *sizep) 1009643da460SMax Grossman { 1010643da460SMax Grossman int err; 1011643da460SMax Grossman /* 1012643da460SMax Grossman * Assume that space (both on-disk and in-stream) is dominated by 1013643da460SMax Grossman * data. We will adjust for indirect blocks and the copies property, 1014643da460SMax Grossman * but ignore per-object space used (eg, dnodes and DRR_OBJECT records). 1015643da460SMax Grossman */ 1016643da460SMax Grossman 1017643da460SMax Grossman /* 1018643da460SMax Grossman * Subtract out approximate space used by indirect blocks. 1019643da460SMax Grossman * Assume most space is used by data blocks (non-indirect, non-dnode). 1020643da460SMax Grossman * Assume all blocks are recordsize. Assume ditto blocks and 1021643da460SMax Grossman * internal fragmentation counter out compression. 1022643da460SMax Grossman * 1023643da460SMax Grossman * Therefore, space used by indirect blocks is sizeof(blkptr_t) per 1024643da460SMax Grossman * block, which we observe in practice. 1025643da460SMax Grossman */ 1026643da460SMax Grossman uint64_t recordsize; 1027643da460SMax Grossman err = dsl_prop_get_int_ds(ds, "recordsize", &recordsize); 1028643da460SMax Grossman if (err != 0) 1029643da460SMax Grossman return (err); 1030643da460SMax Grossman size -= size / recordsize * sizeof (blkptr_t); 1031643da460SMax Grossman 1032643da460SMax Grossman /* Add in the space for the record associated with each block. */ 1033643da460SMax Grossman size += size / recordsize * sizeof (dmu_replay_record_t); 1034643da460SMax Grossman 1035643da460SMax Grossman *sizep = size; 1036643da460SMax Grossman 1037643da460SMax Grossman return (0); 1038643da460SMax Grossman } 1039643da460SMax Grossman 10403b2aab18SMatthew Ahrens int 10413b2aab18SMatthew Ahrens dmu_send_estimate(dsl_dataset_t *ds, dsl_dataset_t *fromds, uint64_t *sizep) 104219b94df9SMatthew Ahrens { 104319b94df9SMatthew Ahrens dsl_pool_t *dp = ds->ds_dir->dd_pool; 104419b94df9SMatthew Ahrens int err; 104519b94df9SMatthew Ahrens uint64_t size; 104619b94df9SMatthew Ahrens 10473b2aab18SMatthew Ahrens ASSERT(dsl_pool_config_held(dp)); 10483b2aab18SMatthew Ahrens 104919b94df9SMatthew Ahrens /* tosnap must be a snapshot */ 1050bc9014e6SJustin Gibbs if (!ds->ds_is_snapshot) 1051be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 105219b94df9SMatthew Ahrens 105324218bebSAndriy Gapon /* fromsnap, if provided, must be a snapshot */ 105424218bebSAndriy Gapon if (fromds != NULL && !fromds->ds_is_snapshot) 105524218bebSAndriy Gapon return (SET_ERROR(EINVAL)); 105624218bebSAndriy Gapon 10574445fffbSMatthew Ahrens /* 10584445fffbSMatthew Ahrens * fromsnap must be an earlier snapshot from the same fs as tosnap, 10594445fffbSMatthew Ahrens * or the origin's fs. 10604445fffbSMatthew Ahrens */ 106178f17100SMatthew Ahrens if (fromds != NULL && !dsl_dataset_is_before(ds, fromds, 0)) 1062be6fd75aSMatthew Ahrens return (SET_ERROR(EXDEV)); 106319b94df9SMatthew Ahrens 106419b94df9SMatthew Ahrens /* Get uncompressed size estimate of changed data. */ 106519b94df9SMatthew Ahrens if (fromds == NULL) { 1066c1379625SJustin T. Gibbs size = dsl_dataset_phys(ds)->ds_uncompressed_bytes; 106719b94df9SMatthew Ahrens } else { 106819b94df9SMatthew Ahrens uint64_t used, comp; 106919b94df9SMatthew Ahrens err = dsl_dataset_space_written(fromds, ds, 107019b94df9SMatthew Ahrens &used, &comp, &size); 10713b2aab18SMatthew Ahrens if (err != 0) 107219b94df9SMatthew Ahrens return (err); 107319b94df9SMatthew Ahrens } 107419b94df9SMatthew Ahrens 1075643da460SMax Grossman err = dmu_adjust_send_estimate_for_indirects(ds, size, sizep); 1076643da460SMax Grossman return (err); 1077643da460SMax Grossman } 1078643da460SMax Grossman 1079643da460SMax Grossman /* 1080643da460SMax Grossman * Simple callback used to traverse the blocks of a snapshot and sum their 1081643da460SMax Grossman * uncompressed size 1082643da460SMax Grossman */ 1083643da460SMax Grossman /* ARGSUSED */ 1084643da460SMax Grossman static int 1085643da460SMax Grossman dmu_calculate_send_traversal(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 1086643da460SMax Grossman const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) 1087643da460SMax Grossman { 1088643da460SMax Grossman uint64_t *spaceptr = arg; 1089643da460SMax Grossman if (bp != NULL && !BP_IS_HOLE(bp)) { 1090643da460SMax Grossman *spaceptr += BP_GET_UCSIZE(bp); 1091643da460SMax Grossman } 1092643da460SMax Grossman return (0); 1093643da460SMax Grossman } 1094643da460SMax Grossman 1095643da460SMax Grossman /* 1096643da460SMax Grossman * Given a desination snapshot and a TXG, calculate the approximate size of a 1097643da460SMax Grossman * send stream sent from that TXG. from_txg may be zero, indicating that the 1098643da460SMax Grossman * whole snapshot will be sent. 1099643da460SMax Grossman */ 1100643da460SMax Grossman int 1101643da460SMax Grossman dmu_send_estimate_from_txg(dsl_dataset_t *ds, uint64_t from_txg, 1102643da460SMax Grossman uint64_t *sizep) 1103643da460SMax Grossman { 1104643da460SMax Grossman dsl_pool_t *dp = ds->ds_dir->dd_pool; 1105643da460SMax Grossman int err; 1106643da460SMax Grossman uint64_t size = 0; 1107643da460SMax Grossman 1108643da460SMax Grossman ASSERT(dsl_pool_config_held(dp)); 1109643da460SMax Grossman 1110643da460SMax Grossman /* tosnap must be a snapshot */ 1111643da460SMax Grossman if (!dsl_dataset_is_snapshot(ds)) 1112643da460SMax Grossman return (SET_ERROR(EINVAL)); 1113643da460SMax Grossman 1114643da460SMax Grossman /* verify that from_txg is before the provided snapshot was taken */ 1115643da460SMax Grossman if (from_txg >= dsl_dataset_phys(ds)->ds_creation_txg) { 1116643da460SMax Grossman return (SET_ERROR(EXDEV)); 1117643da460SMax Grossman } 111819b94df9SMatthew Ahrens 111919b94df9SMatthew Ahrens /* 1120643da460SMax Grossman * traverse the blocks of the snapshot with birth times after 1121643da460SMax Grossman * from_txg, summing their uncompressed size 112219b94df9SMatthew Ahrens */ 1123643da460SMax Grossman err = traverse_dataset(ds, from_txg, TRAVERSE_POST, 1124643da460SMax Grossman dmu_calculate_send_traversal, &size); 1125643da460SMax Grossman if (err) 112619b94df9SMatthew Ahrens return (err); 112719b94df9SMatthew Ahrens 1128643da460SMax Grossman err = dmu_adjust_send_estimate_for_indirects(ds, size, sizep); 1129643da460SMax Grossman return (err); 113019b94df9SMatthew Ahrens } 113119b94df9SMatthew Ahrens 11323b2aab18SMatthew Ahrens typedef struct dmu_recv_begin_arg { 11333b2aab18SMatthew Ahrens const char *drba_origin; 11343b2aab18SMatthew Ahrens dmu_recv_cookie_t *drba_cookie; 11353b2aab18SMatthew Ahrens cred_t *drba_cred; 113634f2f8cfSMatthew Ahrens uint64_t drba_snapobj; 11373b2aab18SMatthew Ahrens } dmu_recv_begin_arg_t; 1138f18faf3fSek 1139f18faf3fSek static int 11403b2aab18SMatthew Ahrens recv_begin_check_existing_impl(dmu_recv_begin_arg_t *drba, dsl_dataset_t *ds, 11413b2aab18SMatthew Ahrens uint64_t fromguid) 1142f18faf3fSek { 11433cb34c60Sahrens uint64_t val; 11443b2aab18SMatthew Ahrens int error; 11453b2aab18SMatthew Ahrens dsl_pool_t *dp = ds->ds_dir->dd_pool; 1146f18faf3fSek 11473b2aab18SMatthew Ahrens /* temporary clone name must not exist */ 11483b2aab18SMatthew Ahrens error = zap_lookup(dp->dp_meta_objset, 1149c1379625SJustin T. Gibbs dsl_dir_phys(ds->ds_dir)->dd_child_dir_zapobj, recv_clone_name, 11503b2aab18SMatthew Ahrens 8, 1, &val); 11513b2aab18SMatthew Ahrens if (error != ENOENT) 11523b2aab18SMatthew Ahrens return (error == 0 ? EBUSY : error); 11533b2aab18SMatthew Ahrens 1154feaa74e4SMark Maybee /* new snapshot name must not exist */ 11553b2aab18SMatthew Ahrens error = zap_lookup(dp->dp_meta_objset, 1156c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_snapnames_zapobj, 1157c1379625SJustin T. Gibbs drba->drba_cookie->drc_tosnap, 8, 1, &val); 11583b2aab18SMatthew Ahrens if (error != ENOENT) 11593b2aab18SMatthew Ahrens return (error == 0 ? EEXIST : error); 1160feaa74e4SMark Maybee 1161a2afb611SJerry Jelinek /* 1162a2afb611SJerry Jelinek * Check snapshot limit before receiving. We'll recheck again at the 1163a2afb611SJerry Jelinek * end, but might as well abort before receiving if we're already over 1164a2afb611SJerry Jelinek * the limit. 1165a2afb611SJerry Jelinek * 1166a2afb611SJerry Jelinek * Note that we do not check the file system limit with 1167a2afb611SJerry Jelinek * dsl_dir_fscount_check because the temporary %clones don't count 1168a2afb611SJerry Jelinek * against that limit. 1169a2afb611SJerry Jelinek */ 1170a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, 1, ZFS_PROP_SNAPSHOT_LIMIT, 1171a2afb611SJerry Jelinek NULL, drba->drba_cred); 1172a2afb611SJerry Jelinek if (error != 0) 1173a2afb611SJerry Jelinek return (error); 1174a2afb611SJerry Jelinek 11753b2aab18SMatthew Ahrens if (fromguid != 0) { 117634f2f8cfSMatthew Ahrens dsl_dataset_t *snap; 1177c1379625SJustin T. Gibbs uint64_t obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; 117834f2f8cfSMatthew Ahrens 117934f2f8cfSMatthew Ahrens /* Find snapshot in this dir that matches fromguid. */ 118034f2f8cfSMatthew Ahrens while (obj != 0) { 118134f2f8cfSMatthew Ahrens error = dsl_dataset_hold_obj(dp, obj, FTAG, 118234f2f8cfSMatthew Ahrens &snap); 118334f2f8cfSMatthew Ahrens if (error != 0) 118434f2f8cfSMatthew Ahrens return (SET_ERROR(ENODEV)); 118534f2f8cfSMatthew Ahrens if (snap->ds_dir != ds->ds_dir) { 118634f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 118734f2f8cfSMatthew Ahrens return (SET_ERROR(ENODEV)); 118834f2f8cfSMatthew Ahrens } 1189c1379625SJustin T. Gibbs if (dsl_dataset_phys(snap)->ds_guid == fromguid) 119034f2f8cfSMatthew Ahrens break; 1191c1379625SJustin T. Gibbs obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 119234f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 119334f2f8cfSMatthew Ahrens } 119434f2f8cfSMatthew Ahrens if (obj == 0) 1195be6fd75aSMatthew Ahrens return (SET_ERROR(ENODEV)); 119692241e0bSTom Erickson 119734f2f8cfSMatthew Ahrens if (drba->drba_cookie->drc_force) { 119834f2f8cfSMatthew Ahrens drba->drba_snapobj = obj; 119934f2f8cfSMatthew Ahrens } else { 120034f2f8cfSMatthew Ahrens /* 120134f2f8cfSMatthew Ahrens * If we are not forcing, there must be no 120234f2f8cfSMatthew Ahrens * changes since fromsnap. 120334f2f8cfSMatthew Ahrens */ 120434f2f8cfSMatthew Ahrens if (dsl_dataset_modified_since_snap(ds, snap)) { 120592241e0bSTom Erickson dsl_dataset_rele(snap, FTAG); 120634f2f8cfSMatthew Ahrens return (SET_ERROR(ETXTBSY)); 120792241e0bSTom Erickson } 120834f2f8cfSMatthew Ahrens drba->drba_snapobj = ds->ds_prev->ds_object; 120992241e0bSTom Erickson } 121034f2f8cfSMatthew Ahrens 121134f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 1212ae46e4c7SMatthew Ahrens } else { 12135bae108fSAndriy Gapon /* if full, then must be forced */ 12145bae108fSAndriy Gapon if (!drba->drba_cookie->drc_force) 12155bae108fSAndriy Gapon return (SET_ERROR(EEXIST)); 12165bae108fSAndriy Gapon /* start from $ORIGIN@$ORIGIN, if supported */ 12175bae108fSAndriy Gapon drba->drba_snapobj = dp->dp_origin_snap != NULL ? 12185bae108fSAndriy Gapon dp->dp_origin_snap->ds_object : 0; 1219ae46e4c7SMatthew Ahrens } 12203cb34c60Sahrens 12213cb34c60Sahrens return (0); 12223b2aab18SMatthew Ahrens 12233b2aab18SMatthew Ahrens } 12243b2aab18SMatthew Ahrens 12253b2aab18SMatthew Ahrens static int 12263b2aab18SMatthew Ahrens dmu_recv_begin_check(void *arg, dmu_tx_t *tx) 12273b2aab18SMatthew Ahrens { 12283b2aab18SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 12293b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 12303b2aab18SMatthew Ahrens struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 12313b2aab18SMatthew Ahrens uint64_t fromguid = drrb->drr_fromguid; 12323b2aab18SMatthew Ahrens int flags = drrb->drr_flags; 12333b2aab18SMatthew Ahrens int error; 12345d7b4d43SMatthew Ahrens uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 12353b2aab18SMatthew Ahrens dsl_dataset_t *ds; 12363b2aab18SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 12373b2aab18SMatthew Ahrens 12383b2aab18SMatthew Ahrens /* already checked */ 12393b2aab18SMatthew Ahrens ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); 12409c3fd121SMatthew Ahrens ASSERT(!(featureflags & DMU_BACKUP_FEATURE_RESUMING)); 12413b2aab18SMatthew Ahrens 12423b2aab18SMatthew Ahrens if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == 12433b2aab18SMatthew Ahrens DMU_COMPOUNDSTREAM || 12443b2aab18SMatthew Ahrens drrb->drr_type >= DMU_OST_NUMTYPES || 12453b2aab18SMatthew Ahrens ((flags & DRR_FLAG_CLONE) && drba->drba_origin == NULL)) 1246be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 12473b2aab18SMatthew Ahrens 12483b2aab18SMatthew Ahrens /* Verify pool version supports SA if SA_SPILL feature set */ 12495d7b4d43SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && 12505d7b4d43SMatthew Ahrens spa_version(dp->dp_spa) < SPA_VERSION_SA) 12515d7b4d43SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12525d7b4d43SMatthew Ahrens 12539c3fd121SMatthew Ahrens if (drba->drba_cookie->drc_resumable && 12549c3fd121SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EXTENSIBLE_DATASET)) 12559c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12569c3fd121SMatthew Ahrens 12575d7b4d43SMatthew Ahrens /* 12585d7b4d43SMatthew Ahrens * The receiving code doesn't know how to translate a WRITE_EMBEDDED 12595d7b4d43SMatthew Ahrens * record to a plan WRITE record, so the pool must have the 12605d7b4d43SMatthew Ahrens * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED 12615d7b4d43SMatthew Ahrens * records. Same with WRITE_EMBEDDED records that use LZ4 compression. 12625d7b4d43SMatthew Ahrens */ 12635d7b4d43SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && 12645d7b4d43SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) 12655d7b4d43SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12665d7b4d43SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4) && 12675d7b4d43SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 1268be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 12693b2aab18SMatthew Ahrens 1270b5152584SMatthew Ahrens /* 1271b5152584SMatthew Ahrens * The receiving code doesn't know how to translate large blocks 1272b5152584SMatthew Ahrens * to smaller ones, so the pool must have the LARGE_BLOCKS 1273b5152584SMatthew Ahrens * feature enabled if the stream has LARGE_BLOCKS. 1274b5152584SMatthew Ahrens */ 1275b5152584SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 1276b5152584SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LARGE_BLOCKS)) 1277b5152584SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 1278b5152584SMatthew Ahrens 12793b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, tofs, FTAG, &ds); 12803b2aab18SMatthew Ahrens if (error == 0) { 12813b2aab18SMatthew Ahrens /* target fs already exists; recv into temp clone */ 12823b2aab18SMatthew Ahrens 12833b2aab18SMatthew Ahrens /* Can't recv a clone into an existing fs */ 1284*68ecb2ecSPaul Dagnelie if (flags & DRR_FLAG_CLONE || drba->drba_origin) { 12853b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1286be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 12873b2aab18SMatthew Ahrens } 12883b2aab18SMatthew Ahrens 12893b2aab18SMatthew Ahrens error = recv_begin_check_existing_impl(drba, ds, fromguid); 12903b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 12913b2aab18SMatthew Ahrens } else if (error == ENOENT) { 12923b2aab18SMatthew Ahrens /* target fs does not exist; must be a full backup or clone */ 12933b2aab18SMatthew Ahrens char buf[MAXNAMELEN]; 12943b2aab18SMatthew Ahrens 12953b2aab18SMatthew Ahrens /* 12963b2aab18SMatthew Ahrens * If it's a non-clone incremental, we are missing the 12973b2aab18SMatthew Ahrens * target fs, so fail the recv. 12983b2aab18SMatthew Ahrens */ 1299a2cdcdd2SPaul Dagnelie if (fromguid != 0 && !(flags & DRR_FLAG_CLONE || 1300a2cdcdd2SPaul Dagnelie drba->drba_origin)) 1301be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 13023b2aab18SMatthew Ahrens 1303*68ecb2ecSPaul Dagnelie /* 1304*68ecb2ecSPaul Dagnelie * If we're receiving a full send as a clone, and it doesn't 1305*68ecb2ecSPaul Dagnelie * contain all the necessary free records and freeobject 1306*68ecb2ecSPaul Dagnelie * records, reject it. 1307*68ecb2ecSPaul Dagnelie */ 1308*68ecb2ecSPaul Dagnelie if (fromguid == 0 && drba->drba_origin && 1309*68ecb2ecSPaul Dagnelie !(flags & DRR_FLAG_FREERECORDS)) 1310*68ecb2ecSPaul Dagnelie return (SET_ERROR(EINVAL)); 1311*68ecb2ecSPaul Dagnelie 13123b2aab18SMatthew Ahrens /* Open the parent of tofs */ 13133b2aab18SMatthew Ahrens ASSERT3U(strlen(tofs), <, MAXNAMELEN); 13143b2aab18SMatthew Ahrens (void) strlcpy(buf, tofs, strrchr(tofs, '/') - tofs + 1); 13153b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, buf, FTAG, &ds); 13163b2aab18SMatthew Ahrens if (error != 0) 13173b2aab18SMatthew Ahrens return (error); 13183b2aab18SMatthew Ahrens 1319a2afb611SJerry Jelinek /* 1320a2afb611SJerry Jelinek * Check filesystem and snapshot limits before receiving. We'll 1321a2afb611SJerry Jelinek * recheck snapshot limits again at the end (we create the 1322a2afb611SJerry Jelinek * filesystems and increment those counts during begin_sync). 1323a2afb611SJerry Jelinek */ 1324a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, 1, 1325a2afb611SJerry Jelinek ZFS_PROP_FILESYSTEM_LIMIT, NULL, drba->drba_cred); 1326a2afb611SJerry Jelinek if (error != 0) { 1327a2afb611SJerry Jelinek dsl_dataset_rele(ds, FTAG); 1328a2afb611SJerry Jelinek return (error); 1329a2afb611SJerry Jelinek } 1330a2afb611SJerry Jelinek 1331a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, 1, 1332a2afb611SJerry Jelinek ZFS_PROP_SNAPSHOT_LIMIT, NULL, drba->drba_cred); 1333a2afb611SJerry Jelinek if (error != 0) { 1334a2afb611SJerry Jelinek dsl_dataset_rele(ds, FTAG); 1335a2afb611SJerry Jelinek return (error); 1336a2afb611SJerry Jelinek } 1337a2afb611SJerry Jelinek 13383b2aab18SMatthew Ahrens if (drba->drba_origin != NULL) { 13393b2aab18SMatthew Ahrens dsl_dataset_t *origin; 13403b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, drba->drba_origin, 13413b2aab18SMatthew Ahrens FTAG, &origin); 13423b2aab18SMatthew Ahrens if (error != 0) { 13433b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 13443b2aab18SMatthew Ahrens return (error); 13453b2aab18SMatthew Ahrens } 1346bc9014e6SJustin Gibbs if (!origin->ds_is_snapshot) { 13473b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 13483b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1349be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 13503b2aab18SMatthew Ahrens } 1351*68ecb2ecSPaul Dagnelie if (dsl_dataset_phys(origin)->ds_guid != fromguid && 1352*68ecb2ecSPaul Dagnelie fromguid != 0) { 13533b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 13543b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1355be6fd75aSMatthew Ahrens return (SET_ERROR(ENODEV)); 13563b2aab18SMatthew Ahrens } 13573b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 13583b2aab18SMatthew Ahrens } 13593b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 13603b2aab18SMatthew Ahrens error = 0; 13613b2aab18SMatthew Ahrens } 13623b2aab18SMatthew Ahrens return (error); 1363f18faf3fSek } 1364f18faf3fSek 1365f18faf3fSek static void 13663b2aab18SMatthew Ahrens dmu_recv_begin_sync(void *arg, dmu_tx_t *tx) 1367f18faf3fSek { 13683b2aab18SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 13693b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 13709c3fd121SMatthew Ahrens objset_t *mos = dp->dp_meta_objset; 13713b2aab18SMatthew Ahrens struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 13723b2aab18SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 13733b2aab18SMatthew Ahrens dsl_dataset_t *ds, *newds; 1374f18faf3fSek uint64_t dsobj; 13753b2aab18SMatthew Ahrens int error; 13769c3fd121SMatthew Ahrens uint64_t crflags = 0; 13773b2aab18SMatthew Ahrens 13789c3fd121SMatthew Ahrens if (drrb->drr_flags & DRR_FLAG_CI_DATA) 13799c3fd121SMatthew Ahrens crflags |= DS_FLAG_CI_DATASET; 1380f18faf3fSek 13813b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, tofs, FTAG, &ds); 13823b2aab18SMatthew Ahrens if (error == 0) { 13833b2aab18SMatthew Ahrens /* create temporary clone */ 138434f2f8cfSMatthew Ahrens dsl_dataset_t *snap = NULL; 138534f2f8cfSMatthew Ahrens if (drba->drba_snapobj != 0) { 138634f2f8cfSMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(dp, 138734f2f8cfSMatthew Ahrens drba->drba_snapobj, FTAG, &snap)); 138834f2f8cfSMatthew Ahrens } 13893b2aab18SMatthew Ahrens dsobj = dsl_dataset_create_sync(ds->ds_dir, recv_clone_name, 139034f2f8cfSMatthew Ahrens snap, crflags, drba->drba_cred, tx); 1391f40b29ceSPaul Dagnelie if (drba->drba_snapobj != 0) 1392f40b29ceSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 13933b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 13943b2aab18SMatthew Ahrens } else { 13953b2aab18SMatthew Ahrens dsl_dir_t *dd; 13963b2aab18SMatthew Ahrens const char *tail; 13973b2aab18SMatthew Ahrens dsl_dataset_t *origin = NULL; 13983b2aab18SMatthew Ahrens 13993b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, tofs, FTAG, &dd, &tail)); 14003b2aab18SMatthew Ahrens 14013b2aab18SMatthew Ahrens if (drba->drba_origin != NULL) { 14023b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, drba->drba_origin, 14033b2aab18SMatthew Ahrens FTAG, &origin)); 14043b2aab18SMatthew Ahrens } 14053b2aab18SMatthew Ahrens 14063b2aab18SMatthew Ahrens /* Create new dataset. */ 14073b2aab18SMatthew Ahrens dsobj = dsl_dataset_create_sync(dd, 14083b2aab18SMatthew Ahrens strrchr(tofs, '/') + 1, 14093b2aab18SMatthew Ahrens origin, crflags, drba->drba_cred, tx); 14103b2aab18SMatthew Ahrens if (origin != NULL) 14113b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 14123b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 14133b2aab18SMatthew Ahrens drba->drba_cookie->drc_newfs = B_TRUE; 14143b2aab18SMatthew Ahrens } 14153b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_own_obj(dp, dsobj, dmu_recv_tag, &newds)); 14163b2aab18SMatthew Ahrens 14179c3fd121SMatthew Ahrens if (drba->drba_cookie->drc_resumable) { 14189c3fd121SMatthew Ahrens dsl_dataset_zapify(newds, tx); 14199c3fd121SMatthew Ahrens if (drrb->drr_fromguid != 0) { 14209c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_FROMGUID, 14219c3fd121SMatthew Ahrens 8, 1, &drrb->drr_fromguid, tx)); 14229c3fd121SMatthew Ahrens } 14239c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TOGUID, 14249c3fd121SMatthew Ahrens 8, 1, &drrb->drr_toguid, tx)); 14259c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TONAME, 14269c3fd121SMatthew Ahrens 1, strlen(drrb->drr_toname) + 1, drrb->drr_toname, tx)); 14279c3fd121SMatthew Ahrens uint64_t one = 1; 14289c3fd121SMatthew Ahrens uint64_t zero = 0; 14299c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OBJECT, 14309c3fd121SMatthew Ahrens 8, 1, &one, tx)); 14319c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OFFSET, 14329c3fd121SMatthew Ahrens 8, 1, &zero, tx)); 14339c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_BYTES, 14349c3fd121SMatthew Ahrens 8, 1, &zero, tx)); 14359c3fd121SMatthew Ahrens if (DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & 14369c3fd121SMatthew Ahrens DMU_BACKUP_FEATURE_EMBED_DATA) { 14379c3fd121SMatthew Ahrens VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_EMBEDOK, 14389c3fd121SMatthew Ahrens 8, 1, &one, tx)); 14399c3fd121SMatthew Ahrens } 14409c3fd121SMatthew Ahrens } 14419c3fd121SMatthew Ahrens 14423b2aab18SMatthew Ahrens dmu_buf_will_dirty(newds->ds_dbuf, tx); 1443c1379625SJustin T. Gibbs dsl_dataset_phys(newds)->ds_flags |= DS_FLAG_INCONSISTENT; 14443cb34c60Sahrens 1445ae46e4c7SMatthew Ahrens /* 1446ae46e4c7SMatthew Ahrens * If we actually created a non-clone, we need to create the 1447ae46e4c7SMatthew Ahrens * objset in our new dataset. 1448ae46e4c7SMatthew Ahrens */ 14493b2aab18SMatthew Ahrens if (BP_IS_HOLE(dsl_dataset_get_blkptr(newds))) { 1450ae46e4c7SMatthew Ahrens (void) dmu_objset_create_impl(dp->dp_spa, 14513b2aab18SMatthew Ahrens newds, dsl_dataset_get_blkptr(newds), drrb->drr_type, tx); 1452ae46e4c7SMatthew Ahrens } 1453ae46e4c7SMatthew Ahrens 14543b2aab18SMatthew Ahrens drba->drba_cookie->drc_ds = newds; 1455dc7cd546SMark Shellenbaum 14563b2aab18SMatthew Ahrens spa_history_log_internal_ds(newds, "receive", tx, ""); 1457dc7cd546SMark Shellenbaum } 1458dc7cd546SMark Shellenbaum 14599c3fd121SMatthew Ahrens static int 14609c3fd121SMatthew Ahrens dmu_recv_resume_begin_check(void *arg, dmu_tx_t *tx) 14619c3fd121SMatthew Ahrens { 14629c3fd121SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 14639c3fd121SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 14649c3fd121SMatthew Ahrens struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 14659c3fd121SMatthew Ahrens int error; 14669c3fd121SMatthew Ahrens uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 14679c3fd121SMatthew Ahrens dsl_dataset_t *ds; 14689c3fd121SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 14699c3fd121SMatthew Ahrens 14709c3fd121SMatthew Ahrens /* already checked */ 14719c3fd121SMatthew Ahrens ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); 14729c3fd121SMatthew Ahrens ASSERT(featureflags & DMU_BACKUP_FEATURE_RESUMING); 14739c3fd121SMatthew Ahrens 14749c3fd121SMatthew Ahrens if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == 14759c3fd121SMatthew Ahrens DMU_COMPOUNDSTREAM || 14769c3fd121SMatthew Ahrens drrb->drr_type >= DMU_OST_NUMTYPES) 14779c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 14789c3fd121SMatthew Ahrens 14799c3fd121SMatthew Ahrens /* Verify pool version supports SA if SA_SPILL feature set */ 14809c3fd121SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && 14819c3fd121SMatthew Ahrens spa_version(dp->dp_spa) < SPA_VERSION_SA) 14829c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 14839c3fd121SMatthew Ahrens 14849c3fd121SMatthew Ahrens /* 14859c3fd121SMatthew Ahrens * The receiving code doesn't know how to translate a WRITE_EMBEDDED 14869c3fd121SMatthew Ahrens * record to a plain WRITE record, so the pool must have the 14879c3fd121SMatthew Ahrens * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED 14889c3fd121SMatthew Ahrens * records. Same with WRITE_EMBEDDED records that use LZ4 compression. 14899c3fd121SMatthew Ahrens */ 14909c3fd121SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && 14919c3fd121SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) 14929c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 14939c3fd121SMatthew Ahrens if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4) && 14949c3fd121SMatthew Ahrens !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 14959c3fd121SMatthew Ahrens return (SET_ERROR(ENOTSUP)); 14969c3fd121SMatthew Ahrens 14979c3fd121SMatthew Ahrens char recvname[ZFS_MAXNAMELEN]; 14989c3fd121SMatthew Ahrens 14999c3fd121SMatthew Ahrens (void) snprintf(recvname, sizeof (recvname), "%s/%s", 15009c3fd121SMatthew Ahrens tofs, recv_clone_name); 15019c3fd121SMatthew Ahrens 15029c3fd121SMatthew Ahrens if (dsl_dataset_hold(dp, recvname, FTAG, &ds) != 0) { 15039c3fd121SMatthew Ahrens /* %recv does not exist; continue in tofs */ 15049c3fd121SMatthew Ahrens error = dsl_dataset_hold(dp, tofs, FTAG, &ds); 15059c3fd121SMatthew Ahrens if (error != 0) 15069c3fd121SMatthew Ahrens return (error); 15079c3fd121SMatthew Ahrens } 15089c3fd121SMatthew Ahrens 15099c3fd121SMatthew Ahrens /* check that ds is marked inconsistent */ 15109c3fd121SMatthew Ahrens if (!DS_IS_INCONSISTENT(ds)) { 15119c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15129c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15139c3fd121SMatthew Ahrens } 15149c3fd121SMatthew Ahrens 15159c3fd121SMatthew Ahrens /* check that there is resuming data, and that the toguid matches */ 15169c3fd121SMatthew Ahrens if (!dsl_dataset_is_zapified(ds)) { 15179c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15189c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15199c3fd121SMatthew Ahrens } 15209c3fd121SMatthew Ahrens uint64_t val; 15219c3fd121SMatthew Ahrens error = zap_lookup(dp->dp_meta_objset, ds->ds_object, 15229c3fd121SMatthew Ahrens DS_FIELD_RESUME_TOGUID, sizeof (val), 1, &val); 15239c3fd121SMatthew Ahrens if (error != 0 || drrb->drr_toguid != val) { 15249c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15259c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15269c3fd121SMatthew Ahrens } 15279c3fd121SMatthew Ahrens 15289c3fd121SMatthew Ahrens /* 15299c3fd121SMatthew Ahrens * Check if the receive is still running. If so, it will be owned. 15309c3fd121SMatthew Ahrens * Note that nothing else can own the dataset (e.g. after the receive 15319c3fd121SMatthew Ahrens * fails) because it will be marked inconsistent. 15329c3fd121SMatthew Ahrens */ 15339c3fd121SMatthew Ahrens if (dsl_dataset_has_owner(ds)) { 15349c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15359c3fd121SMatthew Ahrens return (SET_ERROR(EBUSY)); 15369c3fd121SMatthew Ahrens } 15379c3fd121SMatthew Ahrens 15389c3fd121SMatthew Ahrens /* There should not be any snapshots of this fs yet. */ 15399c3fd121SMatthew Ahrens if (ds->ds_prev != NULL && ds->ds_prev->ds_dir == ds->ds_dir) { 15409c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15419c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15429c3fd121SMatthew Ahrens } 15439c3fd121SMatthew Ahrens 15449c3fd121SMatthew Ahrens /* 15459c3fd121SMatthew Ahrens * Note: resume point will be checked when we process the first WRITE 15469c3fd121SMatthew Ahrens * record. 15479c3fd121SMatthew Ahrens */ 15489c3fd121SMatthew Ahrens 15499c3fd121SMatthew Ahrens /* check that the origin matches */ 15509c3fd121SMatthew Ahrens val = 0; 15519c3fd121SMatthew Ahrens (void) zap_lookup(dp->dp_meta_objset, ds->ds_object, 15529c3fd121SMatthew Ahrens DS_FIELD_RESUME_FROMGUID, sizeof (val), 1, &val); 15539c3fd121SMatthew Ahrens if (drrb->drr_fromguid != val) { 15549c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15559c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 15569c3fd121SMatthew Ahrens } 15579c3fd121SMatthew Ahrens 15589c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15599c3fd121SMatthew Ahrens return (0); 15609c3fd121SMatthew Ahrens } 15619c3fd121SMatthew Ahrens 15629c3fd121SMatthew Ahrens static void 15639c3fd121SMatthew Ahrens dmu_recv_resume_begin_sync(void *arg, dmu_tx_t *tx) 15649c3fd121SMatthew Ahrens { 15659c3fd121SMatthew Ahrens dmu_recv_begin_arg_t *drba = arg; 15669c3fd121SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 15679c3fd121SMatthew Ahrens const char *tofs = drba->drba_cookie->drc_tofs; 15689c3fd121SMatthew Ahrens dsl_dataset_t *ds; 15699c3fd121SMatthew Ahrens uint64_t dsobj; 15709c3fd121SMatthew Ahrens char recvname[ZFS_MAXNAMELEN]; 15719c3fd121SMatthew Ahrens 15729c3fd121SMatthew Ahrens (void) snprintf(recvname, sizeof (recvname), "%s/%s", 15739c3fd121SMatthew Ahrens tofs, recv_clone_name); 15749c3fd121SMatthew Ahrens 15759c3fd121SMatthew Ahrens if (dsl_dataset_hold(dp, recvname, FTAG, &ds) != 0) { 15769c3fd121SMatthew Ahrens /* %recv does not exist; continue in tofs */ 15779c3fd121SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, tofs, FTAG, &ds)); 15789c3fd121SMatthew Ahrens drba->drba_cookie->drc_newfs = B_TRUE; 15799c3fd121SMatthew Ahrens } 15809c3fd121SMatthew Ahrens 15819c3fd121SMatthew Ahrens /* clear the inconsistent flag so that we can own it */ 15829c3fd121SMatthew Ahrens ASSERT(DS_IS_INCONSISTENT(ds)); 15839c3fd121SMatthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx); 15849c3fd121SMatthew Ahrens dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; 15859c3fd121SMatthew Ahrens dsobj = ds->ds_object; 15869c3fd121SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 15879c3fd121SMatthew Ahrens 15889c3fd121SMatthew Ahrens VERIFY0(dsl_dataset_own_obj(dp, dsobj, dmu_recv_tag, &ds)); 15899c3fd121SMatthew Ahrens 15909c3fd121SMatthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx); 15919c3fd121SMatthew Ahrens dsl_dataset_phys(ds)->ds_flags |= DS_FLAG_INCONSISTENT; 15929c3fd121SMatthew Ahrens 15939c3fd121SMatthew Ahrens ASSERT(!BP_IS_HOLE(dsl_dataset_get_blkptr(ds))); 15949c3fd121SMatthew Ahrens 15959c3fd121SMatthew Ahrens drba->drba_cookie->drc_ds = ds; 15969c3fd121SMatthew Ahrens 15979c3fd121SMatthew Ahrens spa_history_log_internal_ds(ds, "resume receive", tx, ""); 15989c3fd121SMatthew Ahrens } 15999c3fd121SMatthew Ahrens 16003cb34c60Sahrens /* 16013cb34c60Sahrens * NB: callers *MUST* call dmu_recv_stream() if dmu_recv_begin() 16023cb34c60Sahrens * succeeds; otherwise we will leak the holds on the datasets. 16033cb34c60Sahrens */ 16043cb34c60Sahrens int 16059c3fd121SMatthew Ahrens dmu_recv_begin(char *tofs, char *tosnap, dmu_replay_record_t *drr_begin, 16069c3fd121SMatthew Ahrens boolean_t force, boolean_t resumable, char *origin, dmu_recv_cookie_t *drc) 1607efb80947Sahrens { 16083b2aab18SMatthew Ahrens dmu_recv_begin_arg_t drba = { 0 }; 1609ab04eb8eStimh 16103cb34c60Sahrens bzero(drc, sizeof (dmu_recv_cookie_t)); 16119c3fd121SMatthew Ahrens drc->drc_drr_begin = drr_begin; 16129c3fd121SMatthew Ahrens drc->drc_drrb = &drr_begin->drr_u.drr_begin; 16133cb34c60Sahrens drc->drc_tosnap = tosnap; 16143b2aab18SMatthew Ahrens drc->drc_tofs = tofs; 16153cb34c60Sahrens drc->drc_force = force; 16169c3fd121SMatthew Ahrens drc->drc_resumable = resumable; 1617a2afb611SJerry Jelinek drc->drc_cred = CRED(); 1618efb80947Sahrens 16199c3fd121SMatthew Ahrens if (drc->drc_drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { 16203b2aab18SMatthew Ahrens drc->drc_byteswap = B_TRUE; 16219c3fd121SMatthew Ahrens fletcher_4_incremental_byteswap(drr_begin, 16223b2aab18SMatthew Ahrens sizeof (dmu_replay_record_t), &drc->drc_cksum); 16239c3fd121SMatthew Ahrens byteswap_record(drr_begin); 16249c3fd121SMatthew Ahrens } else if (drc->drc_drrb->drr_magic == DMU_BACKUP_MAGIC) { 16259c3fd121SMatthew Ahrens fletcher_4_incremental_native(drr_begin, 16263b2aab18SMatthew Ahrens sizeof (dmu_replay_record_t), &drc->drc_cksum); 16279c3fd121SMatthew Ahrens } else { 16289c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 16293cb34c60Sahrens } 16303cb34c60Sahrens 16313b2aab18SMatthew Ahrens drba.drba_origin = origin; 16323b2aab18SMatthew Ahrens drba.drba_cookie = drc; 16333b2aab18SMatthew Ahrens drba.drba_cred = CRED(); 16343b2aab18SMatthew Ahrens 16359c3fd121SMatthew Ahrens if (DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo) & 16369c3fd121SMatthew Ahrens DMU_BACKUP_FEATURE_RESUMING) { 16379c3fd121SMatthew Ahrens return (dsl_sync_task(tofs, 16389c3fd121SMatthew Ahrens dmu_recv_resume_begin_check, dmu_recv_resume_begin_sync, 16399c3fd121SMatthew Ahrens &drba, 5, ZFS_SPACE_CHECK_NORMAL)); 16409c3fd121SMatthew Ahrens } else { 16419c3fd121SMatthew Ahrens return (dsl_sync_task(tofs, 16429c3fd121SMatthew Ahrens dmu_recv_begin_check, dmu_recv_begin_sync, 16439c3fd121SMatthew Ahrens &drba, 5, ZFS_SPACE_CHECK_NORMAL)); 16449c3fd121SMatthew Ahrens } 1645efb80947Sahrens } 1646efb80947Sahrens 1647a2cdcdd2SPaul Dagnelie struct receive_record_arg { 1648a2cdcdd2SPaul Dagnelie dmu_replay_record_t header; 1649a2cdcdd2SPaul Dagnelie void *payload; /* Pointer to a buffer containing the payload */ 1650a2cdcdd2SPaul Dagnelie /* 1651a2cdcdd2SPaul Dagnelie * If the record is a write, pointer to the arc_buf_t containing the 1652a2cdcdd2SPaul Dagnelie * payload. 1653a2cdcdd2SPaul Dagnelie */ 1654a2cdcdd2SPaul Dagnelie arc_buf_t *write_buf; 1655a2cdcdd2SPaul Dagnelie int payload_size; 16569c3fd121SMatthew Ahrens uint64_t bytes_read; /* bytes read from stream when record created */ 1657a2cdcdd2SPaul Dagnelie boolean_t eos_marker; /* Marks the end of the stream */ 1658a2cdcdd2SPaul Dagnelie bqueue_node_t node; 1659a2cdcdd2SPaul Dagnelie }; 1660a2cdcdd2SPaul Dagnelie 1661a2cdcdd2SPaul Dagnelie struct receive_writer_arg { 166298110f08SMatthew Ahrens objset_t *os; 16633b2aab18SMatthew Ahrens boolean_t byteswap; 1664a2cdcdd2SPaul Dagnelie bqueue_t q; 16659c3fd121SMatthew Ahrens 1666a2cdcdd2SPaul Dagnelie /* 1667a2cdcdd2SPaul Dagnelie * These three args are used to signal to the main thread that we're 1668a2cdcdd2SPaul Dagnelie * done. 1669a2cdcdd2SPaul Dagnelie */ 1670a2cdcdd2SPaul Dagnelie kmutex_t mutex; 1671a2cdcdd2SPaul Dagnelie kcondvar_t cv; 1672a2cdcdd2SPaul Dagnelie boolean_t done; 16739c3fd121SMatthew Ahrens 1674a2cdcdd2SPaul Dagnelie int err; 1675a2cdcdd2SPaul Dagnelie /* A map from guid to dataset to help handle dedup'd streams. */ 1676a2cdcdd2SPaul Dagnelie avl_tree_t *guid_to_ds_map; 16779c3fd121SMatthew Ahrens boolean_t resumable; 16789c3fd121SMatthew Ahrens uint64_t last_object, last_offset; 16799c3fd121SMatthew Ahrens uint64_t bytes_read; /* bytes read when current record created */ 1680a2cdcdd2SPaul Dagnelie }; 168198110f08SMatthew Ahrens 1682*68ecb2ecSPaul Dagnelie struct objlist { 1683*68ecb2ecSPaul Dagnelie list_t list; /* List of struct receive_objnode. */ 1684*68ecb2ecSPaul Dagnelie /* 1685*68ecb2ecSPaul Dagnelie * Last object looked up. Used to assert that objects are being looked 1686*68ecb2ecSPaul Dagnelie * up in ascending order. 1687*68ecb2ecSPaul Dagnelie */ 1688*68ecb2ecSPaul Dagnelie uint64_t last_lookup; 1689*68ecb2ecSPaul Dagnelie }; 1690*68ecb2ecSPaul Dagnelie 1691*68ecb2ecSPaul Dagnelie struct receive_objnode { 1692*68ecb2ecSPaul Dagnelie list_node_t node; 1693*68ecb2ecSPaul Dagnelie uint64_t object; 1694*68ecb2ecSPaul Dagnelie }; 1695*68ecb2ecSPaul Dagnelie 1696a2cdcdd2SPaul Dagnelie struct receive_arg { 1697a2cdcdd2SPaul Dagnelie objset_t *os; 1698a2cdcdd2SPaul Dagnelie vnode_t *vp; /* The vnode to read the stream from */ 1699a2cdcdd2SPaul Dagnelie uint64_t voff; /* The current offset in the stream */ 17009c3fd121SMatthew Ahrens uint64_t bytes_read; 1701a2cdcdd2SPaul Dagnelie /* 1702a2cdcdd2SPaul Dagnelie * A record that has had its payload read in, but hasn't yet been handed 1703a2cdcdd2SPaul Dagnelie * off to the worker thread. 1704a2cdcdd2SPaul Dagnelie */ 1705a2cdcdd2SPaul Dagnelie struct receive_record_arg *rrd; 1706a2cdcdd2SPaul Dagnelie /* A record that has had its header read in, but not its payload. */ 1707a2cdcdd2SPaul Dagnelie struct receive_record_arg *next_rrd; 17083cb34c60Sahrens zio_cksum_t cksum; 170998110f08SMatthew Ahrens zio_cksum_t prev_cksum; 1710a2cdcdd2SPaul Dagnelie int err; 1711a2cdcdd2SPaul Dagnelie boolean_t byteswap; 1712a2cdcdd2SPaul Dagnelie /* Sorted list of objects not to issue prefetches for. */ 1713*68ecb2ecSPaul Dagnelie struct objlist ignore_objlist; 17143cb34c60Sahrens }; 17153cb34c60Sahrens 17169e69d7d0SLori Alt typedef struct guid_map_entry { 17179e69d7d0SLori Alt uint64_t guid; 17189e69d7d0SLori Alt dsl_dataset_t *gme_ds; 17199e69d7d0SLori Alt avl_node_t avlnode; 17209e69d7d0SLori Alt } guid_map_entry_t; 17219e69d7d0SLori Alt 17229e69d7d0SLori Alt static int 17239e69d7d0SLori Alt guid_compare(const void *arg1, const void *arg2) 17249e69d7d0SLori Alt { 17259e69d7d0SLori Alt const guid_map_entry_t *gmep1 = arg1; 17269e69d7d0SLori Alt const guid_map_entry_t *gmep2 = arg2; 17279e69d7d0SLori Alt 17289e69d7d0SLori Alt if (gmep1->guid < gmep2->guid) 17299e69d7d0SLori Alt return (-1); 17309e69d7d0SLori Alt else if (gmep1->guid > gmep2->guid) 17319e69d7d0SLori Alt return (1); 17329e69d7d0SLori Alt return (0); 17339e69d7d0SLori Alt } 17349e69d7d0SLori Alt 1735c99e4bdcSChris Kirby static void 1736c99e4bdcSChris Kirby free_guid_map_onexit(void *arg) 1737c99e4bdcSChris Kirby { 1738c99e4bdcSChris Kirby avl_tree_t *ca = arg; 1739c99e4bdcSChris Kirby void *cookie = NULL; 1740c99e4bdcSChris Kirby guid_map_entry_t *gmep; 1741c99e4bdcSChris Kirby 1742c99e4bdcSChris Kirby while ((gmep = avl_destroy_nodes(ca, &cookie)) != NULL) { 17433b2aab18SMatthew Ahrens dsl_dataset_long_rele(gmep->gme_ds, gmep); 1744de8d9cffSMatthew Ahrens dsl_dataset_rele(gmep->gme_ds, gmep); 1745c99e4bdcSChris Kirby kmem_free(gmep, sizeof (guid_map_entry_t)); 1746c99e4bdcSChris Kirby } 1747c99e4bdcSChris Kirby avl_destroy(ca); 1748c99e4bdcSChris Kirby kmem_free(ca, sizeof (avl_tree_t)); 1749c99e4bdcSChris Kirby } 1750c99e4bdcSChris Kirby 175198110f08SMatthew Ahrens static int 1752a2cdcdd2SPaul Dagnelie receive_read(struct receive_arg *ra, int len, void *buf) 1753efb80947Sahrens { 17543cb34c60Sahrens int done = 0; 1755efb80947Sahrens 1756efb80947Sahrens /* some things will require 8-byte alignment, so everything must */ 1757fb09f5aaSMadhav Suresh ASSERT0(len % 8); 1758efb80947Sahrens 17593cb34c60Sahrens while (done < len) { 1760efb80947Sahrens ssize_t resid; 1761efb80947Sahrens 1762efb80947Sahrens ra->err = vn_rdwr(UIO_READ, ra->vp, 176398110f08SMatthew Ahrens (char *)buf + done, len - done, 1764efb80947Sahrens ra->voff, UIO_SYSSPACE, FAPPEND, 1765efb80947Sahrens RLIM64_INFINITY, CRED(), &resid); 1766efb80947Sahrens 17679c3fd121SMatthew Ahrens if (resid == len - done) { 17689c3fd121SMatthew Ahrens /* 17699c3fd121SMatthew Ahrens * Note: ECKSUM indicates that the receive 17709c3fd121SMatthew Ahrens * was interrupted and can potentially be resumed. 17719c3fd121SMatthew Ahrens */ 17729c3fd121SMatthew Ahrens ra->err = SET_ERROR(ECKSUM); 17739c3fd121SMatthew Ahrens } 17743cb34c60Sahrens ra->voff += len - done - resid; 17753cb34c60Sahrens done = len - resid; 17763b2aab18SMatthew Ahrens if (ra->err != 0) 177798110f08SMatthew Ahrens return (ra->err); 1778efb80947Sahrens } 1779efb80947Sahrens 17809c3fd121SMatthew Ahrens ra->bytes_read += len; 17819c3fd121SMatthew Ahrens 17823cb34c60Sahrens ASSERT3U(done, ==, len); 178398110f08SMatthew Ahrens return (0); 1784efb80947Sahrens } 1785efb80947Sahrens 1786efb80947Sahrens static void 178798110f08SMatthew Ahrens byteswap_record(dmu_replay_record_t *drr) 1788efb80947Sahrens { 1789efb80947Sahrens #define DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X)) 1790efb80947Sahrens #define DO32(X) (drr->drr_u.X = BSWAP_32(drr->drr_u.X)) 1791efb80947Sahrens drr->drr_type = BSWAP_32(drr->drr_type); 17923cb34c60Sahrens drr->drr_payloadlen = BSWAP_32(drr->drr_payloadlen); 179398110f08SMatthew Ahrens 1794efb80947Sahrens switch (drr->drr_type) { 1795efb80947Sahrens case DRR_BEGIN: 1796efb80947Sahrens DO64(drr_begin.drr_magic); 17979e69d7d0SLori Alt DO64(drr_begin.drr_versioninfo); 1798efb80947Sahrens DO64(drr_begin.drr_creation_time); 1799efb80947Sahrens DO32(drr_begin.drr_type); 18003cb34c60Sahrens DO32(drr_begin.drr_flags); 1801efb80947Sahrens DO64(drr_begin.drr_toguid); 1802efb80947Sahrens DO64(drr_begin.drr_fromguid); 1803efb80947Sahrens break; 1804efb80947Sahrens case DRR_OBJECT: 1805efb80947Sahrens DO64(drr_object.drr_object); 1806efb80947Sahrens DO32(drr_object.drr_type); 1807efb80947Sahrens DO32(drr_object.drr_bonustype); 1808efb80947Sahrens DO32(drr_object.drr_blksz); 1809efb80947Sahrens DO32(drr_object.drr_bonuslen); 18109e69d7d0SLori Alt DO64(drr_object.drr_toguid); 1811efb80947Sahrens break; 1812efb80947Sahrens case DRR_FREEOBJECTS: 1813efb80947Sahrens DO64(drr_freeobjects.drr_firstobj); 1814efb80947Sahrens DO64(drr_freeobjects.drr_numobjs); 18159e69d7d0SLori Alt DO64(drr_freeobjects.drr_toguid); 1816efb80947Sahrens break; 1817efb80947Sahrens case DRR_WRITE: 1818efb80947Sahrens DO64(drr_write.drr_object); 1819efb80947Sahrens DO32(drr_write.drr_type); 1820efb80947Sahrens DO64(drr_write.drr_offset); 1821efb80947Sahrens DO64(drr_write.drr_length); 18229e69d7d0SLori Alt DO64(drr_write.drr_toguid); 182398110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write.drr_key.ddk_cksum); 18248e714474SLori Alt DO64(drr_write.drr_key.ddk_prop); 18259e69d7d0SLori Alt break; 18269e69d7d0SLori Alt case DRR_WRITE_BYREF: 18279e69d7d0SLori Alt DO64(drr_write_byref.drr_object); 18289e69d7d0SLori Alt DO64(drr_write_byref.drr_offset); 18299e69d7d0SLori Alt DO64(drr_write_byref.drr_length); 18309e69d7d0SLori Alt DO64(drr_write_byref.drr_toguid); 18319e69d7d0SLori Alt DO64(drr_write_byref.drr_refguid); 18329e69d7d0SLori Alt DO64(drr_write_byref.drr_refobject); 18339e69d7d0SLori Alt DO64(drr_write_byref.drr_refoffset); 183498110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write_byref. 183598110f08SMatthew Ahrens drr_key.ddk_cksum); 18368e714474SLori Alt DO64(drr_write_byref.drr_key.ddk_prop); 1837efb80947Sahrens break; 18385d7b4d43SMatthew Ahrens case DRR_WRITE_EMBEDDED: 18395d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_object); 18405d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_offset); 18415d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_length); 18425d7b4d43SMatthew Ahrens DO64(drr_write_embedded.drr_toguid); 18435d7b4d43SMatthew Ahrens DO32(drr_write_embedded.drr_lsize); 18445d7b4d43SMatthew Ahrens DO32(drr_write_embedded.drr_psize); 18455d7b4d43SMatthew Ahrens break; 1846efb80947Sahrens case DRR_FREE: 1847efb80947Sahrens DO64(drr_free.drr_object); 1848efb80947Sahrens DO64(drr_free.drr_offset); 1849efb80947Sahrens DO64(drr_free.drr_length); 18509e69d7d0SLori Alt DO64(drr_free.drr_toguid); 1851efb80947Sahrens break; 18520a586ceaSMark Shellenbaum case DRR_SPILL: 18530a586ceaSMark Shellenbaum DO64(drr_spill.drr_object); 18540a586ceaSMark Shellenbaum DO64(drr_spill.drr_length); 18550a586ceaSMark Shellenbaum DO64(drr_spill.drr_toguid); 18560a586ceaSMark Shellenbaum break; 1857efb80947Sahrens case DRR_END: 18589e69d7d0SLori Alt DO64(drr_end.drr_toguid); 185998110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_end.drr_checksum); 1860efb80947Sahrens break; 1861efb80947Sahrens } 186298110f08SMatthew Ahrens 186398110f08SMatthew Ahrens if (drr->drr_type != DRR_BEGIN) { 186498110f08SMatthew Ahrens ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_checksum.drr_checksum); 186598110f08SMatthew Ahrens } 186698110f08SMatthew Ahrens 1867efb80947Sahrens #undef DO64 1868efb80947Sahrens #undef DO32 1869efb80947Sahrens } 1870efb80947Sahrens 1871e77d42eaSMatthew Ahrens static inline uint8_t 1872e77d42eaSMatthew Ahrens deduce_nblkptr(dmu_object_type_t bonus_type, uint64_t bonus_size) 1873e77d42eaSMatthew Ahrens { 1874e77d42eaSMatthew Ahrens if (bonus_type == DMU_OT_SA) { 1875e77d42eaSMatthew Ahrens return (1); 1876e77d42eaSMatthew Ahrens } else { 1877e77d42eaSMatthew Ahrens return (1 + 1878e77d42eaSMatthew Ahrens ((DN_MAX_BONUSLEN - bonus_size) >> SPA_BLKPTRSHIFT)); 1879e77d42eaSMatthew Ahrens } 1880e77d42eaSMatthew Ahrens } 1881e77d42eaSMatthew Ahrens 18829c3fd121SMatthew Ahrens static void 18839c3fd121SMatthew Ahrens save_resume_state(struct receive_writer_arg *rwa, 18849c3fd121SMatthew Ahrens uint64_t object, uint64_t offset, dmu_tx_t *tx) 18859c3fd121SMatthew Ahrens { 18869c3fd121SMatthew Ahrens int txgoff = dmu_tx_get_txg(tx) & TXG_MASK; 18879c3fd121SMatthew Ahrens 18889c3fd121SMatthew Ahrens if (!rwa->resumable) 18899c3fd121SMatthew Ahrens return; 18909c3fd121SMatthew Ahrens 18919c3fd121SMatthew Ahrens /* 18929c3fd121SMatthew Ahrens * We use ds_resume_bytes[] != 0 to indicate that we need to 18939c3fd121SMatthew Ahrens * update this on disk, so it must not be 0. 18949c3fd121SMatthew Ahrens */ 18959c3fd121SMatthew Ahrens ASSERT(rwa->bytes_read != 0); 18969c3fd121SMatthew Ahrens 18979c3fd121SMatthew Ahrens /* 18989c3fd121SMatthew Ahrens * We only resume from write records, which have a valid 18999c3fd121SMatthew Ahrens * (non-meta-dnode) object number. 19009c3fd121SMatthew Ahrens */ 19019c3fd121SMatthew Ahrens ASSERT(object != 0); 19029c3fd121SMatthew Ahrens 19039c3fd121SMatthew Ahrens /* 19049c3fd121SMatthew Ahrens * For resuming to work correctly, we must receive records in order, 19059c3fd121SMatthew Ahrens * sorted by object,offset. This is checked by the callers, but 19069c3fd121SMatthew Ahrens * assert it here for good measure. 19079c3fd121SMatthew Ahrens */ 19089c3fd121SMatthew Ahrens ASSERT3U(object, >=, rwa->os->os_dsl_dataset->ds_resume_object[txgoff]); 19099c3fd121SMatthew Ahrens ASSERT(object != rwa->os->os_dsl_dataset->ds_resume_object[txgoff] || 19109c3fd121SMatthew Ahrens offset >= rwa->os->os_dsl_dataset->ds_resume_offset[txgoff]); 19119c3fd121SMatthew Ahrens ASSERT3U(rwa->bytes_read, >=, 19129c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff]); 19139c3fd121SMatthew Ahrens 19149c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_object[txgoff] = object; 19159c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_offset[txgoff] = offset; 19169c3fd121SMatthew Ahrens rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff] = rwa->bytes_read; 19179c3fd121SMatthew Ahrens } 19189c3fd121SMatthew Ahrens 1919efb80947Sahrens static int 1920a2cdcdd2SPaul Dagnelie receive_object(struct receive_writer_arg *rwa, struct drr_object *drro, 1921a2cdcdd2SPaul Dagnelie void *data) 1922efb80947Sahrens { 1923e77d42eaSMatthew Ahrens dmu_object_info_t doi; 1924efb80947Sahrens dmu_tx_t *tx; 1925e77d42eaSMatthew Ahrens uint64_t object; 1926e77d42eaSMatthew Ahrens int err; 1927efb80947Sahrens 1928efb80947Sahrens if (drro->drr_type == DMU_OT_NONE || 1929ad135b5dSChristopher Siden !DMU_OT_IS_VALID(drro->drr_type) || 1930ad135b5dSChristopher Siden !DMU_OT_IS_VALID(drro->drr_bonustype) || 19319e69d7d0SLori Alt drro->drr_checksumtype >= ZIO_CHECKSUM_FUNCTIONS || 1932efb80947Sahrens drro->drr_compress >= ZIO_COMPRESS_FUNCTIONS || 1933efb80947Sahrens P2PHASE(drro->drr_blksz, SPA_MINBLOCKSIZE) || 1934efb80947Sahrens drro->drr_blksz < SPA_MINBLOCKSIZE || 1935a2cdcdd2SPaul Dagnelie drro->drr_blksz > spa_maxblocksize(dmu_objset_spa(rwa->os)) || 1936efb80947Sahrens drro->drr_bonuslen > DN_MAX_BONUSLEN) { 1937be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 1938efb80947Sahrens } 1939efb80947Sahrens 1940a2cdcdd2SPaul Dagnelie err = dmu_object_info(rwa->os, drro->drr_object, &doi); 19412bf405a2SMark Maybee 19422bf405a2SMark Maybee if (err != 0 && err != ENOENT) 1943be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 1944e77d42eaSMatthew Ahrens object = err == 0 ? drro->drr_object : DMU_NEW_OBJECT; 19452bf405a2SMark Maybee 1946e77d42eaSMatthew Ahrens /* 1947e77d42eaSMatthew Ahrens * If we are losing blkptrs or changing the block size this must 1948e77d42eaSMatthew Ahrens * be a new file instance. We must clear out the previous file 1949e77d42eaSMatthew Ahrens * contents before we can change this type of metadata in the dnode. 1950e77d42eaSMatthew Ahrens */ 1951e77d42eaSMatthew Ahrens if (err == 0) { 1952e77d42eaSMatthew Ahrens int nblkptr; 1953e77d42eaSMatthew Ahrens 1954e77d42eaSMatthew Ahrens nblkptr = deduce_nblkptr(drro->drr_bonustype, 1955e77d42eaSMatthew Ahrens drro->drr_bonuslen); 1956e77d42eaSMatthew Ahrens 1957e77d42eaSMatthew Ahrens if (drro->drr_blksz != doi.doi_data_block_size || 1958e77d42eaSMatthew Ahrens nblkptr < doi.doi_nblkptr) { 1959a2cdcdd2SPaul Dagnelie err = dmu_free_long_range(rwa->os, drro->drr_object, 1960e77d42eaSMatthew Ahrens 0, DMU_OBJECT_END); 1961e77d42eaSMatthew Ahrens if (err != 0) 1962e77d42eaSMatthew Ahrens return (SET_ERROR(EINVAL)); 1963efb80947Sahrens } 1964e77d42eaSMatthew Ahrens } 1965e77d42eaSMatthew Ahrens 1966a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 1967e77d42eaSMatthew Ahrens dmu_tx_hold_bonus(tx, object); 1968e77d42eaSMatthew Ahrens err = dmu_tx_assign(tx, TXG_WAIT); 1969e77d42eaSMatthew Ahrens if (err != 0) { 1970e77d42eaSMatthew Ahrens dmu_tx_abort(tx); 1971e77d42eaSMatthew Ahrens return (err); 1972e77d42eaSMatthew Ahrens } 1973e77d42eaSMatthew Ahrens 1974e77d42eaSMatthew Ahrens if (object == DMU_NEW_OBJECT) { 1975e77d42eaSMatthew Ahrens /* currently free, want to be allocated */ 1976a2cdcdd2SPaul Dagnelie err = dmu_object_claim(rwa->os, drro->drr_object, 1977efb80947Sahrens drro->drr_type, drro->drr_blksz, 1978efb80947Sahrens drro->drr_bonustype, drro->drr_bonuslen, tx); 1979e77d42eaSMatthew Ahrens } else if (drro->drr_type != doi.doi_type || 1980e77d42eaSMatthew Ahrens drro->drr_blksz != doi.doi_data_block_size || 1981e77d42eaSMatthew Ahrens drro->drr_bonustype != doi.doi_bonus_type || 1982e77d42eaSMatthew Ahrens drro->drr_bonuslen != doi.doi_bonus_size) { 1983e77d42eaSMatthew Ahrens /* currently allocated, but with different properties */ 1984a2cdcdd2SPaul Dagnelie err = dmu_object_reclaim(rwa->os, drro->drr_object, 1985efb80947Sahrens drro->drr_type, drro->drr_blksz, 1986e77d42eaSMatthew Ahrens drro->drr_bonustype, drro->drr_bonuslen, tx); 1987efb80947Sahrens } 19883b2aab18SMatthew Ahrens if (err != 0) { 1989e77d42eaSMatthew Ahrens dmu_tx_commit(tx); 1990be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 19910a586ceaSMark Shellenbaum } 19922bf405a2SMark Maybee 1993a2cdcdd2SPaul Dagnelie dmu_object_set_checksum(rwa->os, drro->drr_object, 199498110f08SMatthew Ahrens drro->drr_checksumtype, tx); 1995a2cdcdd2SPaul Dagnelie dmu_object_set_compress(rwa->os, drro->drr_object, 199698110f08SMatthew Ahrens drro->drr_compress, tx); 1997efb80947Sahrens 1998adee0b6fSTim Haley if (data != NULL) { 1999efb80947Sahrens dmu_buf_t *db; 2000adee0b6fSTim Haley 2001a2cdcdd2SPaul Dagnelie VERIFY0(dmu_bonus_hold(rwa->os, drro->drr_object, FTAG, &db)); 2002efb80947Sahrens dmu_buf_will_dirty(db, tx); 2003efb80947Sahrens 20041934e92fSmaybee ASSERT3U(db->db_size, >=, drro->drr_bonuslen); 20051934e92fSmaybee bcopy(data, db->db_data, drro->drr_bonuslen); 2006a2cdcdd2SPaul Dagnelie if (rwa->byteswap) { 2007ad135b5dSChristopher Siden dmu_object_byteswap_t byteswap = 2008ad135b5dSChristopher Siden DMU_OT_BYTESWAP(drro->drr_bonustype); 2009ad135b5dSChristopher Siden dmu_ot_byteswap[byteswap].ob_func(db->db_data, 2010efb80947Sahrens drro->drr_bonuslen); 2011efb80947Sahrens } 2012efb80947Sahrens dmu_buf_rele(db, FTAG); 2013efb80947Sahrens } 2014efb80947Sahrens dmu_tx_commit(tx); 20159c3fd121SMatthew Ahrens 2016efb80947Sahrens return (0); 2017efb80947Sahrens } 2018efb80947Sahrens 2019efb80947Sahrens /* ARGSUSED */ 2020efb80947Sahrens static int 2021a2cdcdd2SPaul Dagnelie receive_freeobjects(struct receive_writer_arg *rwa, 2022efb80947Sahrens struct drr_freeobjects *drrfo) 2023efb80947Sahrens { 2024efb80947Sahrens uint64_t obj; 2025*68ecb2ecSPaul Dagnelie int next_err = 0; 2026efb80947Sahrens 2027efb80947Sahrens if (drrfo->drr_firstobj + drrfo->drr_numobjs < drrfo->drr_firstobj) 2028be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2029efb80947Sahrens 2030efb80947Sahrens for (obj = drrfo->drr_firstobj; 2031*68ecb2ecSPaul Dagnelie obj < drrfo->drr_firstobj + drrfo->drr_numobjs && next_err == 0; 2032*68ecb2ecSPaul Dagnelie next_err = dmu_object_next(rwa->os, &obj, FALSE, 0)) { 2033efb80947Sahrens int err; 2034efb80947Sahrens 2035a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, obj, NULL) != 0) 2036efb80947Sahrens continue; 2037efb80947Sahrens 2038a2cdcdd2SPaul Dagnelie err = dmu_free_long_object(rwa->os, obj); 20393b2aab18SMatthew Ahrens if (err != 0) 2040efb80947Sahrens return (err); 2041efb80947Sahrens } 2042*68ecb2ecSPaul Dagnelie if (next_err != ESRCH) 2043*68ecb2ecSPaul Dagnelie return (next_err); 2044efb80947Sahrens return (0); 2045efb80947Sahrens } 2046efb80947Sahrens 2047efb80947Sahrens static int 2048a2cdcdd2SPaul Dagnelie receive_write(struct receive_writer_arg *rwa, struct drr_write *drrw, 2049a2cdcdd2SPaul Dagnelie arc_buf_t *abuf) 2050efb80947Sahrens { 2051efb80947Sahrens dmu_tx_t *tx; 2052efb80947Sahrens int err; 2053efb80947Sahrens 2054efb80947Sahrens if (drrw->drr_offset + drrw->drr_length < drrw->drr_offset || 2055ad135b5dSChristopher Siden !DMU_OT_IS_VALID(drrw->drr_type)) 2056be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2057efb80947Sahrens 20589c3fd121SMatthew Ahrens /* 20599c3fd121SMatthew Ahrens * For resuming to work, records must be in increasing order 20609c3fd121SMatthew Ahrens * by (object, offset). 20619c3fd121SMatthew Ahrens */ 20629c3fd121SMatthew Ahrens if (drrw->drr_object < rwa->last_object || 20639c3fd121SMatthew Ahrens (drrw->drr_object == rwa->last_object && 20649c3fd121SMatthew Ahrens drrw->drr_offset < rwa->last_offset)) { 20659c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 20669c3fd121SMatthew Ahrens } 20679c3fd121SMatthew Ahrens rwa->last_object = drrw->drr_object; 20689c3fd121SMatthew Ahrens rwa->last_offset = drrw->drr_offset; 20699c3fd121SMatthew Ahrens 2070a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, drrw->drr_object, NULL) != 0) 20718a904709SMatthew Ahrens return (SET_ERROR(EINVAL)); 20728a904709SMatthew Ahrens 2073a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 2074efb80947Sahrens 2075efb80947Sahrens dmu_tx_hold_write(tx, drrw->drr_object, 2076efb80947Sahrens drrw->drr_offset, drrw->drr_length); 2077efb80947Sahrens err = dmu_tx_assign(tx, TXG_WAIT); 20783b2aab18SMatthew Ahrens if (err != 0) { 2079efb80947Sahrens dmu_tx_abort(tx); 2080efb80947Sahrens return (err); 2081efb80947Sahrens } 2082a2cdcdd2SPaul Dagnelie if (rwa->byteswap) { 2083ad135b5dSChristopher Siden dmu_object_byteswap_t byteswap = 2084ad135b5dSChristopher Siden DMU_OT_BYTESWAP(drrw->drr_type); 208598110f08SMatthew Ahrens dmu_ot_byteswap[byteswap].ob_func(abuf->b_data, 208698110f08SMatthew Ahrens drrw->drr_length); 2087ad135b5dSChristopher Siden } 208898110f08SMatthew Ahrens 208998110f08SMatthew Ahrens dmu_buf_t *bonus; 2090a2cdcdd2SPaul Dagnelie if (dmu_bonus_hold(rwa->os, drrw->drr_object, FTAG, &bonus) != 0) 209198110f08SMatthew Ahrens return (SET_ERROR(EINVAL)); 20928a904709SMatthew Ahrens dmu_assign_arcbuf(bonus, drrw->drr_offset, abuf, tx); 20939c3fd121SMatthew Ahrens 20949c3fd121SMatthew Ahrens /* 20959c3fd121SMatthew Ahrens * Note: If the receive fails, we want the resume stream to start 20969c3fd121SMatthew Ahrens * with the same record that we last successfully received (as opposed 20979c3fd121SMatthew Ahrens * to the next record), so that we can verify that we are 20989c3fd121SMatthew Ahrens * resuming from the correct location. 20999c3fd121SMatthew Ahrens */ 21009c3fd121SMatthew Ahrens save_resume_state(rwa, drrw->drr_object, drrw->drr_offset, tx); 2101efb80947Sahrens dmu_tx_commit(tx); 21028a904709SMatthew Ahrens dmu_buf_rele(bonus, FTAG); 21039c3fd121SMatthew Ahrens 2104efb80947Sahrens return (0); 2105efb80947Sahrens } 2106efb80947Sahrens 21079e69d7d0SLori Alt /* 21089e69d7d0SLori Alt * Handle a DRR_WRITE_BYREF record. This record is used in dedup'ed 21099e69d7d0SLori Alt * streams to refer to a copy of the data that is already on the 21109e69d7d0SLori Alt * system because it came in earlier in the stream. This function 21119e69d7d0SLori Alt * finds the earlier copy of the data, and uses that copy instead of 21129e69d7d0SLori Alt * data from the stream to fulfill this write. 21139e69d7d0SLori Alt */ 21149e69d7d0SLori Alt static int 2115a2cdcdd2SPaul Dagnelie receive_write_byref(struct receive_writer_arg *rwa, 2116a2cdcdd2SPaul Dagnelie struct drr_write_byref *drrwbr) 21179e69d7d0SLori Alt { 21189e69d7d0SLori Alt dmu_tx_t *tx; 21199e69d7d0SLori Alt int err; 21209e69d7d0SLori Alt guid_map_entry_t gmesrch; 21219e69d7d0SLori Alt guid_map_entry_t *gmep; 21225d7b4d43SMatthew Ahrens avl_index_t where; 21239e69d7d0SLori Alt objset_t *ref_os = NULL; 21249e69d7d0SLori Alt dmu_buf_t *dbp; 21259e69d7d0SLori Alt 21269e69d7d0SLori Alt if (drrwbr->drr_offset + drrwbr->drr_length < drrwbr->drr_offset) 2127be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 21289e69d7d0SLori Alt 21299e69d7d0SLori Alt /* 21309e69d7d0SLori Alt * If the GUID of the referenced dataset is different from the 21319e69d7d0SLori Alt * GUID of the target dataset, find the referenced dataset. 21329e69d7d0SLori Alt */ 21339e69d7d0SLori Alt if (drrwbr->drr_toguid != drrwbr->drr_refguid) { 21349e69d7d0SLori Alt gmesrch.guid = drrwbr->drr_refguid; 2135a2cdcdd2SPaul Dagnelie if ((gmep = avl_find(rwa->guid_to_ds_map, &gmesrch, 21369e69d7d0SLori Alt &where)) == NULL) { 2137be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 21389e69d7d0SLori Alt } 21399e69d7d0SLori Alt if (dmu_objset_from_ds(gmep->gme_ds, &ref_os)) 2140be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 21419e69d7d0SLori Alt } else { 2142a2cdcdd2SPaul Dagnelie ref_os = rwa->os; 21439e69d7d0SLori Alt } 21449e69d7d0SLori Alt 21455d7b4d43SMatthew Ahrens err = dmu_buf_hold(ref_os, drrwbr->drr_refobject, 21465d7b4d43SMatthew Ahrens drrwbr->drr_refoffset, FTAG, &dbp, DMU_READ_PREFETCH); 21475d7b4d43SMatthew Ahrens if (err != 0) 21489e69d7d0SLori Alt return (err); 21499e69d7d0SLori Alt 2150a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 21519e69d7d0SLori Alt 21529e69d7d0SLori Alt dmu_tx_hold_write(tx, drrwbr->drr_object, 21539e69d7d0SLori Alt drrwbr->drr_offset, drrwbr->drr_length); 21549e69d7d0SLori Alt err = dmu_tx_assign(tx, TXG_WAIT); 21553b2aab18SMatthew Ahrens if (err != 0) { 21569e69d7d0SLori Alt dmu_tx_abort(tx); 21579e69d7d0SLori Alt return (err); 21589e69d7d0SLori Alt } 2159a2cdcdd2SPaul Dagnelie dmu_write(rwa->os, drrwbr->drr_object, 21609e69d7d0SLori Alt drrwbr->drr_offset, drrwbr->drr_length, dbp->db_data, tx); 21619e69d7d0SLori Alt dmu_buf_rele(dbp, FTAG); 21629c3fd121SMatthew Ahrens 21639c3fd121SMatthew Ahrens /* See comment in restore_write. */ 21649c3fd121SMatthew Ahrens save_resume_state(rwa, drrwbr->drr_object, drrwbr->drr_offset, tx); 21659e69d7d0SLori Alt dmu_tx_commit(tx); 21669e69d7d0SLori Alt return (0); 21679e69d7d0SLori Alt } 21689e69d7d0SLori Alt 21695d7b4d43SMatthew Ahrens static int 2170a2cdcdd2SPaul Dagnelie receive_write_embedded(struct receive_writer_arg *rwa, 21719c3fd121SMatthew Ahrens struct drr_write_embedded *drrwe, void *data) 21725d7b4d43SMatthew Ahrens { 21735d7b4d43SMatthew Ahrens dmu_tx_t *tx; 21745d7b4d43SMatthew Ahrens int err; 21755d7b4d43SMatthew Ahrens 21769c3fd121SMatthew Ahrens if (drrwe->drr_offset + drrwe->drr_length < drrwe->drr_offset) 21775d7b4d43SMatthew Ahrens return (EINVAL); 21785d7b4d43SMatthew Ahrens 21799c3fd121SMatthew Ahrens if (drrwe->drr_psize > BPE_PAYLOAD_SIZE) 21805d7b4d43SMatthew Ahrens return (EINVAL); 21815d7b4d43SMatthew Ahrens 21829c3fd121SMatthew Ahrens if (drrwe->drr_etype >= NUM_BP_EMBEDDED_TYPES) 21835d7b4d43SMatthew Ahrens return (EINVAL); 21849c3fd121SMatthew Ahrens if (drrwe->drr_compression >= ZIO_COMPRESS_FUNCTIONS) 21855d7b4d43SMatthew Ahrens return (EINVAL); 21865d7b4d43SMatthew Ahrens 2187a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 21885d7b4d43SMatthew Ahrens 21899c3fd121SMatthew Ahrens dmu_tx_hold_write(tx, drrwe->drr_object, 21909c3fd121SMatthew Ahrens drrwe->drr_offset, drrwe->drr_length); 21915d7b4d43SMatthew Ahrens err = dmu_tx_assign(tx, TXG_WAIT); 21925d7b4d43SMatthew Ahrens if (err != 0) { 21935d7b4d43SMatthew Ahrens dmu_tx_abort(tx); 21945d7b4d43SMatthew Ahrens return (err); 21955d7b4d43SMatthew Ahrens } 21965d7b4d43SMatthew Ahrens 21979c3fd121SMatthew Ahrens dmu_write_embedded(rwa->os, drrwe->drr_object, 21989c3fd121SMatthew Ahrens drrwe->drr_offset, data, drrwe->drr_etype, 21999c3fd121SMatthew Ahrens drrwe->drr_compression, drrwe->drr_lsize, drrwe->drr_psize, 2200a2cdcdd2SPaul Dagnelie rwa->byteswap ^ ZFS_HOST_BYTEORDER, tx); 22015d7b4d43SMatthew Ahrens 22029c3fd121SMatthew Ahrens /* See comment in restore_write. */ 22039c3fd121SMatthew Ahrens save_resume_state(rwa, drrwe->drr_object, drrwe->drr_offset, tx); 22045d7b4d43SMatthew Ahrens dmu_tx_commit(tx); 22055d7b4d43SMatthew Ahrens return (0); 22065d7b4d43SMatthew Ahrens } 22075d7b4d43SMatthew Ahrens 22080a586ceaSMark Shellenbaum static int 2209a2cdcdd2SPaul Dagnelie receive_spill(struct receive_writer_arg *rwa, struct drr_spill *drrs, 2210a2cdcdd2SPaul Dagnelie void *data) 22110a586ceaSMark Shellenbaum { 22120a586ceaSMark Shellenbaum dmu_tx_t *tx; 22130a586ceaSMark Shellenbaum dmu_buf_t *db, *db_spill; 22140a586ceaSMark Shellenbaum int err; 22150a586ceaSMark Shellenbaum 22160a586ceaSMark Shellenbaum if (drrs->drr_length < SPA_MINBLOCKSIZE || 2217a2cdcdd2SPaul Dagnelie drrs->drr_length > spa_maxblocksize(dmu_objset_spa(rwa->os))) 2218be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 22190a586ceaSMark Shellenbaum 2220a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, drrs->drr_object, NULL) != 0) 2221be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 22220a586ceaSMark Shellenbaum 2223a2cdcdd2SPaul Dagnelie VERIFY0(dmu_bonus_hold(rwa->os, drrs->drr_object, FTAG, &db)); 22240a586ceaSMark Shellenbaum if ((err = dmu_spill_hold_by_bonus(db, FTAG, &db_spill)) != 0) { 22250a586ceaSMark Shellenbaum dmu_buf_rele(db, FTAG); 22260a586ceaSMark Shellenbaum return (err); 22270a586ceaSMark Shellenbaum } 22280a586ceaSMark Shellenbaum 2229a2cdcdd2SPaul Dagnelie tx = dmu_tx_create(rwa->os); 22300a586ceaSMark Shellenbaum 22310a586ceaSMark Shellenbaum dmu_tx_hold_spill(tx, db->db_object); 22320a586ceaSMark Shellenbaum 22330a586ceaSMark Shellenbaum err = dmu_tx_assign(tx, TXG_WAIT); 22343b2aab18SMatthew Ahrens if (err != 0) { 22350a586ceaSMark Shellenbaum dmu_buf_rele(db, FTAG); 22360a586ceaSMark Shellenbaum dmu_buf_rele(db_spill, FTAG); 22370a586ceaSMark Shellenbaum dmu_tx_abort(tx); 22380a586ceaSMark Shellenbaum return (err); 22390a586ceaSMark Shellenbaum } 22400a586ceaSMark Shellenbaum dmu_buf_will_dirty(db_spill, tx); 22410a586ceaSMark Shellenbaum 22420a586ceaSMark Shellenbaum if (db_spill->db_size < drrs->drr_length) 22430a586ceaSMark Shellenbaum VERIFY(0 == dbuf_spill_set_blksz(db_spill, 22440a586ceaSMark Shellenbaum drrs->drr_length, tx)); 22450a586ceaSMark Shellenbaum bcopy(data, db_spill->db_data, drrs->drr_length); 22460a586ceaSMark Shellenbaum 22470a586ceaSMark Shellenbaum dmu_buf_rele(db, FTAG); 22480a586ceaSMark Shellenbaum dmu_buf_rele(db_spill, FTAG); 22490a586ceaSMark Shellenbaum 22500a586ceaSMark Shellenbaum dmu_tx_commit(tx); 22510a586ceaSMark Shellenbaum return (0); 22520a586ceaSMark Shellenbaum } 22530a586ceaSMark Shellenbaum 2254efb80947Sahrens /* ARGSUSED */ 2255efb80947Sahrens static int 2256a2cdcdd2SPaul Dagnelie receive_free(struct receive_writer_arg *rwa, struct drr_free *drrf) 2257efb80947Sahrens { 2258efb80947Sahrens int err; 2259efb80947Sahrens 2260efb80947Sahrens if (drrf->drr_length != -1ULL && 2261efb80947Sahrens drrf->drr_offset + drrf->drr_length < drrf->drr_offset) 2262be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2263efb80947Sahrens 2264a2cdcdd2SPaul Dagnelie if (dmu_object_info(rwa->os, drrf->drr_object, NULL) != 0) 2265be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 2266efb80947Sahrens 2267a2cdcdd2SPaul Dagnelie err = dmu_free_long_range(rwa->os, drrf->drr_object, 2268efb80947Sahrens drrf->drr_offset, drrf->drr_length); 2269a2cdcdd2SPaul Dagnelie 2270efb80947Sahrens return (err); 2271efb80947Sahrens } 2272efb80947Sahrens 22733b2aab18SMatthew Ahrens /* used to destroy the drc_ds on error */ 22743b2aab18SMatthew Ahrens static void 22753b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(dmu_recv_cookie_t *drc) 22763b2aab18SMatthew Ahrens { 22779c3fd121SMatthew Ahrens if (drc->drc_resumable) { 22789c3fd121SMatthew Ahrens /* wait for our resume state to be written to disk */ 22799c3fd121SMatthew Ahrens txg_wait_synced(drc->drc_ds->ds_dir->dd_pool, 0); 22809c3fd121SMatthew Ahrens dsl_dataset_disown(drc->drc_ds, dmu_recv_tag); 22819c3fd121SMatthew Ahrens } else { 22829c3fd121SMatthew Ahrens char name[MAXNAMELEN]; 22839c3fd121SMatthew Ahrens dsl_dataset_name(drc->drc_ds, name); 22849c3fd121SMatthew Ahrens dsl_dataset_disown(drc->drc_ds, dmu_recv_tag); 22859c3fd121SMatthew Ahrens (void) dsl_destroy_head(name); 22869c3fd121SMatthew Ahrens } 22873b2aab18SMatthew Ahrens } 22883b2aab18SMatthew Ahrens 228998110f08SMatthew Ahrens static void 2290a2cdcdd2SPaul Dagnelie receive_cksum(struct receive_arg *ra, int len, void *buf) 229198110f08SMatthew Ahrens { 229298110f08SMatthew Ahrens if (ra->byteswap) { 229398110f08SMatthew Ahrens fletcher_4_incremental_byteswap(buf, len, &ra->cksum); 229498110f08SMatthew Ahrens } else { 229598110f08SMatthew Ahrens fletcher_4_incremental_native(buf, len, &ra->cksum); 229698110f08SMatthew Ahrens } 229798110f08SMatthew Ahrens } 229898110f08SMatthew Ahrens 229998110f08SMatthew Ahrens /* 2300a2cdcdd2SPaul Dagnelie * Read the payload into a buffer of size len, and update the current record's 2301a2cdcdd2SPaul Dagnelie * payload field. 2302a2cdcdd2SPaul Dagnelie * Allocate ra->next_rrd and read the next record's header into 2303a2cdcdd2SPaul Dagnelie * ra->next_rrd->header. 230498110f08SMatthew Ahrens * Verify checksum of payload and next record. 230598110f08SMatthew Ahrens */ 230698110f08SMatthew Ahrens static int 2307a2cdcdd2SPaul Dagnelie receive_read_payload_and_next_header(struct receive_arg *ra, int len, void *buf) 230898110f08SMatthew Ahrens { 230998110f08SMatthew Ahrens int err; 231098110f08SMatthew Ahrens 231198110f08SMatthew Ahrens if (len != 0) { 2312a2cdcdd2SPaul Dagnelie ASSERT3U(len, <=, SPA_MAXBLOCKSIZE); 23139c3fd121SMatthew Ahrens err = receive_read(ra, len, buf); 231498110f08SMatthew Ahrens if (err != 0) 231598110f08SMatthew Ahrens return (err); 23169c3fd121SMatthew Ahrens receive_cksum(ra, len, buf); 23179c3fd121SMatthew Ahrens 23189c3fd121SMatthew Ahrens /* note: rrd is NULL when reading the begin record's payload */ 23199c3fd121SMatthew Ahrens if (ra->rrd != NULL) { 23209c3fd121SMatthew Ahrens ra->rrd->payload = buf; 23219c3fd121SMatthew Ahrens ra->rrd->payload_size = len; 23229c3fd121SMatthew Ahrens ra->rrd->bytes_read = ra->bytes_read; 23239c3fd121SMatthew Ahrens } 232498110f08SMatthew Ahrens } 232598110f08SMatthew Ahrens 232698110f08SMatthew Ahrens ra->prev_cksum = ra->cksum; 232798110f08SMatthew Ahrens 2328a2cdcdd2SPaul Dagnelie ra->next_rrd = kmem_zalloc(sizeof (*ra->next_rrd), KM_SLEEP); 2329a2cdcdd2SPaul Dagnelie err = receive_read(ra, sizeof (ra->next_rrd->header), 2330a2cdcdd2SPaul Dagnelie &ra->next_rrd->header); 23319c3fd121SMatthew Ahrens ra->next_rrd->bytes_read = ra->bytes_read; 2332a2cdcdd2SPaul Dagnelie if (err != 0) { 2333a2cdcdd2SPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 2334a2cdcdd2SPaul Dagnelie ra->next_rrd = NULL; 233598110f08SMatthew Ahrens return (err); 2336a2cdcdd2SPaul Dagnelie } 2337a2cdcdd2SPaul Dagnelie if (ra->next_rrd->header.drr_type == DRR_BEGIN) { 2338a2cdcdd2SPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 2339a2cdcdd2SPaul Dagnelie ra->next_rrd = NULL; 234098110f08SMatthew Ahrens return (SET_ERROR(EINVAL)); 2341a2cdcdd2SPaul Dagnelie } 234298110f08SMatthew Ahrens 234398110f08SMatthew Ahrens /* 234498110f08SMatthew Ahrens * Note: checksum is of everything up to but not including the 234598110f08SMatthew Ahrens * checksum itself. 234698110f08SMatthew Ahrens */ 234798110f08SMatthew Ahrens ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 234898110f08SMatthew Ahrens ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); 2349a2cdcdd2SPaul Dagnelie receive_cksum(ra, 235098110f08SMatthew Ahrens offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 2351a2cdcdd2SPaul Dagnelie &ra->next_rrd->header); 235298110f08SMatthew Ahrens 2353a2cdcdd2SPaul Dagnelie zio_cksum_t cksum_orig = 2354a2cdcdd2SPaul Dagnelie ra->next_rrd->header.drr_u.drr_checksum.drr_checksum; 2355a2cdcdd2SPaul Dagnelie zio_cksum_t *cksump = 2356a2cdcdd2SPaul Dagnelie &ra->next_rrd->header.drr_u.drr_checksum.drr_checksum; 235798110f08SMatthew Ahrens 235898110f08SMatthew Ahrens if (ra->byteswap) 2359a2cdcdd2SPaul Dagnelie byteswap_record(&ra->next_rrd->header); 236098110f08SMatthew Ahrens 236198110f08SMatthew Ahrens if ((!ZIO_CHECKSUM_IS_ZERO(cksump)) && 2362a2cdcdd2SPaul Dagnelie !ZIO_CHECKSUM_EQUAL(ra->cksum, *cksump)) { 2363a2cdcdd2SPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 2364a2cdcdd2SPaul Dagnelie ra->next_rrd = NULL; 236598110f08SMatthew Ahrens return (SET_ERROR(ECKSUM)); 2366a2cdcdd2SPaul Dagnelie } 236798110f08SMatthew Ahrens 2368a2cdcdd2SPaul Dagnelie receive_cksum(ra, sizeof (cksum_orig), &cksum_orig); 236998110f08SMatthew Ahrens 237098110f08SMatthew Ahrens return (0); 237198110f08SMatthew Ahrens } 237298110f08SMatthew Ahrens 2373*68ecb2ecSPaul Dagnelie static void 2374*68ecb2ecSPaul Dagnelie objlist_create(struct objlist *list) 2375*68ecb2ecSPaul Dagnelie { 2376*68ecb2ecSPaul Dagnelie list_create(&list->list, sizeof (struct receive_objnode), 2377*68ecb2ecSPaul Dagnelie offsetof(struct receive_objnode, node)); 2378*68ecb2ecSPaul Dagnelie list->last_lookup = 0; 2379*68ecb2ecSPaul Dagnelie } 2380*68ecb2ecSPaul Dagnelie 2381*68ecb2ecSPaul Dagnelie static void 2382*68ecb2ecSPaul Dagnelie objlist_destroy(struct objlist *list) 2383*68ecb2ecSPaul Dagnelie { 2384*68ecb2ecSPaul Dagnelie for (struct receive_objnode *n = list_remove_head(&list->list); 2385*68ecb2ecSPaul Dagnelie n != NULL; n = list_remove_head(&list->list)) { 2386*68ecb2ecSPaul Dagnelie kmem_free(n, sizeof (*n)); 2387*68ecb2ecSPaul Dagnelie } 2388*68ecb2ecSPaul Dagnelie list_destroy(&list->list); 2389*68ecb2ecSPaul Dagnelie } 2390*68ecb2ecSPaul Dagnelie 2391*68ecb2ecSPaul Dagnelie /* 2392*68ecb2ecSPaul Dagnelie * This function looks through the objlist to see if the specified object number 2393*68ecb2ecSPaul Dagnelie * is contained in the objlist. In the process, it will remove all object 2394*68ecb2ecSPaul Dagnelie * numbers in the list that are smaller than the specified object number. Thus, 2395*68ecb2ecSPaul Dagnelie * any lookup of an object number smaller than a previously looked up object 2396*68ecb2ecSPaul Dagnelie * number will always return false; therefore, all lookups should be done in 2397*68ecb2ecSPaul Dagnelie * ascending order. 2398*68ecb2ecSPaul Dagnelie */ 2399*68ecb2ecSPaul Dagnelie static boolean_t 2400*68ecb2ecSPaul Dagnelie objlist_exists(struct objlist *list, uint64_t object) 2401*68ecb2ecSPaul Dagnelie { 2402*68ecb2ecSPaul Dagnelie struct receive_objnode *node = list_head(&list->list); 2403*68ecb2ecSPaul Dagnelie ASSERT3U(object, >=, list->last_lookup); 2404*68ecb2ecSPaul Dagnelie list->last_lookup = object; 2405*68ecb2ecSPaul Dagnelie while (node != NULL && node->object < object) { 2406*68ecb2ecSPaul Dagnelie VERIFY3P(node, ==, list_remove_head(&list->list)); 2407*68ecb2ecSPaul Dagnelie kmem_free(node, sizeof (*node)); 2408*68ecb2ecSPaul Dagnelie node = list_head(&list->list); 2409*68ecb2ecSPaul Dagnelie } 2410*68ecb2ecSPaul Dagnelie return (node != NULL && node->object == object); 2411*68ecb2ecSPaul Dagnelie } 2412*68ecb2ecSPaul Dagnelie 2413*68ecb2ecSPaul Dagnelie /* 2414*68ecb2ecSPaul Dagnelie * The objlist is a list of object numbers stored in ascending order. However, 2415*68ecb2ecSPaul Dagnelie * the insertion of new object numbers does not seek out the correct location to 2416*68ecb2ecSPaul Dagnelie * store a new object number; instead, it appends it to the list for simplicity. 2417*68ecb2ecSPaul Dagnelie * Thus, any users must take care to only insert new object numbers in ascending 2418*68ecb2ecSPaul Dagnelie * order. 2419*68ecb2ecSPaul Dagnelie */ 2420*68ecb2ecSPaul Dagnelie static void 2421*68ecb2ecSPaul Dagnelie objlist_insert(struct objlist *list, uint64_t object) 2422*68ecb2ecSPaul Dagnelie { 2423*68ecb2ecSPaul Dagnelie struct receive_objnode *node = kmem_zalloc(sizeof (*node), KM_SLEEP); 2424*68ecb2ecSPaul Dagnelie node->object = object; 2425*68ecb2ecSPaul Dagnelie #ifdef ZFS_DEBUG 2426*68ecb2ecSPaul Dagnelie struct receive_objnode *last_object = list_tail(&list->list); 2427*68ecb2ecSPaul Dagnelie uint64_t last_objnum = (last_object != NULL ? last_object->object : 0); 2428*68ecb2ecSPaul Dagnelie ASSERT3U(node->object, >, last_objnum); 2429*68ecb2ecSPaul Dagnelie #endif 2430*68ecb2ecSPaul Dagnelie list_insert_tail(&list->list, node); 2431*68ecb2ecSPaul Dagnelie } 2432*68ecb2ecSPaul Dagnelie 2433a2cdcdd2SPaul Dagnelie /* 2434a2cdcdd2SPaul Dagnelie * Issue the prefetch reads for any necessary indirect blocks. 2435a2cdcdd2SPaul Dagnelie * 2436a2cdcdd2SPaul Dagnelie * We use the object ignore list to tell us whether or not to issue prefetches 2437a2cdcdd2SPaul Dagnelie * for a given object. We do this for both correctness (in case the blocksize 2438a2cdcdd2SPaul Dagnelie * of an object has changed) and performance (if the object doesn't exist, don't 2439a2cdcdd2SPaul Dagnelie * needlessly try to issue prefetches). We also trim the list as we go through 2440a2cdcdd2SPaul Dagnelie * the stream to prevent it from growing to an unbounded size. 2441a2cdcdd2SPaul Dagnelie * 2442a2cdcdd2SPaul Dagnelie * The object numbers within will always be in sorted order, and any write 2443a2cdcdd2SPaul Dagnelie * records we see will also be in sorted order, but they're not sorted with 2444a2cdcdd2SPaul Dagnelie * respect to each other (i.e. we can get several object records before 2445a2cdcdd2SPaul Dagnelie * receiving each object's write records). As a result, once we've reached a 2446a2cdcdd2SPaul Dagnelie * given object number, we can safely remove any reference to lower object 2447a2cdcdd2SPaul Dagnelie * numbers in the ignore list. In practice, we receive up to 32 object records 2448a2cdcdd2SPaul Dagnelie * before receiving write records, so the list can have up to 32 nodes in it. 2449a2cdcdd2SPaul Dagnelie */ 2450a2cdcdd2SPaul Dagnelie /* ARGSUSED */ 2451a2cdcdd2SPaul Dagnelie static void 2452a2cdcdd2SPaul Dagnelie receive_read_prefetch(struct receive_arg *ra, 2453a2cdcdd2SPaul Dagnelie uint64_t object, uint64_t offset, uint64_t length) 2454a2cdcdd2SPaul Dagnelie { 2455*68ecb2ecSPaul Dagnelie if (!objlist_exists(&ra->ignore_objlist, object)) { 2456a2cdcdd2SPaul Dagnelie dmu_prefetch(ra->os, object, 1, offset, length, 2457a2cdcdd2SPaul Dagnelie ZIO_PRIORITY_SYNC_READ); 2458a2cdcdd2SPaul Dagnelie } 2459a2cdcdd2SPaul Dagnelie } 2460a2cdcdd2SPaul Dagnelie 2461a2cdcdd2SPaul Dagnelie /* 2462a2cdcdd2SPaul Dagnelie * Read records off the stream, issuing any necessary prefetches. 2463a2cdcdd2SPaul Dagnelie */ 246498110f08SMatthew Ahrens static int 2465a2cdcdd2SPaul Dagnelie receive_read_record(struct receive_arg *ra) 246698110f08SMatthew Ahrens { 246798110f08SMatthew Ahrens int err; 246898110f08SMatthew Ahrens 2469a2cdcdd2SPaul Dagnelie switch (ra->rrd->header.drr_type) { 247098110f08SMatthew Ahrens case DRR_OBJECT: 247198110f08SMatthew Ahrens { 2472a2cdcdd2SPaul Dagnelie struct drr_object *drro = &ra->rrd->header.drr_u.drr_object; 2473a2cdcdd2SPaul Dagnelie uint32_t size = P2ROUNDUP(drro->drr_bonuslen, 8); 2474a2cdcdd2SPaul Dagnelie void *buf = kmem_zalloc(size, KM_SLEEP); 2475a2cdcdd2SPaul Dagnelie dmu_object_info_t doi; 2476a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, size, buf); 2477a2cdcdd2SPaul Dagnelie if (err != 0) { 2478a2cdcdd2SPaul Dagnelie kmem_free(buf, size); 247998110f08SMatthew Ahrens return (err); 2480a2cdcdd2SPaul Dagnelie } 2481a2cdcdd2SPaul Dagnelie err = dmu_object_info(ra->os, drro->drr_object, &doi); 2482a2cdcdd2SPaul Dagnelie /* 2483a2cdcdd2SPaul Dagnelie * See receive_read_prefetch for an explanation why we're 2484a2cdcdd2SPaul Dagnelie * storing this object in the ignore_obj_list. 2485a2cdcdd2SPaul Dagnelie */ 2486a2cdcdd2SPaul Dagnelie if (err == ENOENT || 2487a2cdcdd2SPaul Dagnelie (err == 0 && doi.doi_data_block_size != drro->drr_blksz)) { 2488*68ecb2ecSPaul Dagnelie objlist_insert(&ra->ignore_objlist, drro->drr_object); 2489a2cdcdd2SPaul Dagnelie err = 0; 2490a2cdcdd2SPaul Dagnelie } 2491a2cdcdd2SPaul Dagnelie return (err); 249298110f08SMatthew Ahrens } 249398110f08SMatthew Ahrens case DRR_FREEOBJECTS: 249498110f08SMatthew Ahrens { 2495a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 2496a2cdcdd2SPaul Dagnelie return (err); 249798110f08SMatthew Ahrens } 249898110f08SMatthew Ahrens case DRR_WRITE: 249998110f08SMatthew Ahrens { 2500a2cdcdd2SPaul Dagnelie struct drr_write *drrw = &ra->rrd->header.drr_u.drr_write; 250198110f08SMatthew Ahrens arc_buf_t *abuf = arc_loan_buf(dmu_objset_spa(ra->os), 250298110f08SMatthew Ahrens drrw->drr_length); 250398110f08SMatthew Ahrens 2504a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 250598110f08SMatthew Ahrens drrw->drr_length, abuf->b_data); 2506a2cdcdd2SPaul Dagnelie if (err != 0) { 250798110f08SMatthew Ahrens dmu_return_arcbuf(abuf); 2508a2cdcdd2SPaul Dagnelie return (err); 2509a2cdcdd2SPaul Dagnelie } 2510a2cdcdd2SPaul Dagnelie ra->rrd->write_buf = abuf; 2511a2cdcdd2SPaul Dagnelie receive_read_prefetch(ra, drrw->drr_object, drrw->drr_offset, 2512a2cdcdd2SPaul Dagnelie drrw->drr_length); 251398110f08SMatthew Ahrens return (err); 251498110f08SMatthew Ahrens } 251598110f08SMatthew Ahrens case DRR_WRITE_BYREF: 251698110f08SMatthew Ahrens { 2517a2cdcdd2SPaul Dagnelie struct drr_write_byref *drrwb = 2518a2cdcdd2SPaul Dagnelie &ra->rrd->header.drr_u.drr_write_byref; 2519a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 2520a2cdcdd2SPaul Dagnelie receive_read_prefetch(ra, drrwb->drr_object, drrwb->drr_offset, 2521a2cdcdd2SPaul Dagnelie drrwb->drr_length); 2522a2cdcdd2SPaul Dagnelie return (err); 252398110f08SMatthew Ahrens } 252498110f08SMatthew Ahrens case DRR_WRITE_EMBEDDED: 252598110f08SMatthew Ahrens { 252698110f08SMatthew Ahrens struct drr_write_embedded *drrwe = 2527a2cdcdd2SPaul Dagnelie &ra->rrd->header.drr_u.drr_write_embedded; 2528a2cdcdd2SPaul Dagnelie uint32_t size = P2ROUNDUP(drrwe->drr_psize, 8); 2529a2cdcdd2SPaul Dagnelie void *buf = kmem_zalloc(size, KM_SLEEP); 2530a2cdcdd2SPaul Dagnelie 2531a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, size, buf); 2532a2cdcdd2SPaul Dagnelie if (err != 0) { 2533a2cdcdd2SPaul Dagnelie kmem_free(buf, size); 253498110f08SMatthew Ahrens return (err); 2535a2cdcdd2SPaul Dagnelie } 2536a2cdcdd2SPaul Dagnelie 2537a2cdcdd2SPaul Dagnelie receive_read_prefetch(ra, drrwe->drr_object, drrwe->drr_offset, 2538a2cdcdd2SPaul Dagnelie drrwe->drr_length); 2539a2cdcdd2SPaul Dagnelie return (err); 254098110f08SMatthew Ahrens } 254198110f08SMatthew Ahrens case DRR_FREE: 254298110f08SMatthew Ahrens { 2543a2cdcdd2SPaul Dagnelie /* 2544a2cdcdd2SPaul Dagnelie * It might be beneficial to prefetch indirect blocks here, but 2545a2cdcdd2SPaul Dagnelie * we don't really have the data to decide for sure. 2546a2cdcdd2SPaul Dagnelie */ 2547a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 2548a2cdcdd2SPaul Dagnelie return (err); 254998110f08SMatthew Ahrens } 255098110f08SMatthew Ahrens case DRR_END: 255198110f08SMatthew Ahrens { 2552a2cdcdd2SPaul Dagnelie struct drr_end *drre = &ra->rrd->header.drr_u.drr_end; 255398110f08SMatthew Ahrens if (!ZIO_CHECKSUM_EQUAL(ra->prev_cksum, drre->drr_checksum)) 25549c3fd121SMatthew Ahrens return (SET_ERROR(ECKSUM)); 255598110f08SMatthew Ahrens return (0); 255698110f08SMatthew Ahrens } 255798110f08SMatthew Ahrens case DRR_SPILL: 255898110f08SMatthew Ahrens { 2559a2cdcdd2SPaul Dagnelie struct drr_spill *drrs = &ra->rrd->header.drr_u.drr_spill; 2560a2cdcdd2SPaul Dagnelie void *buf = kmem_zalloc(drrs->drr_length, KM_SLEEP); 2561a2cdcdd2SPaul Dagnelie err = receive_read_payload_and_next_header(ra, drrs->drr_length, 2562a2cdcdd2SPaul Dagnelie buf); 256398110f08SMatthew Ahrens if (err != 0) 2564a2cdcdd2SPaul Dagnelie kmem_free(buf, drrs->drr_length); 2565a2cdcdd2SPaul Dagnelie return (err); 256698110f08SMatthew Ahrens } 256798110f08SMatthew Ahrens default: 256898110f08SMatthew Ahrens return (SET_ERROR(EINVAL)); 256998110f08SMatthew Ahrens } 257098110f08SMatthew Ahrens } 257198110f08SMatthew Ahrens 25723cb34c60Sahrens /* 2573a2cdcdd2SPaul Dagnelie * Commit the records to the pool. 2574a2cdcdd2SPaul Dagnelie */ 2575a2cdcdd2SPaul Dagnelie static int 2576a2cdcdd2SPaul Dagnelie receive_process_record(struct receive_writer_arg *rwa, 2577a2cdcdd2SPaul Dagnelie struct receive_record_arg *rrd) 2578a2cdcdd2SPaul Dagnelie { 2579a2cdcdd2SPaul Dagnelie int err; 2580a2cdcdd2SPaul Dagnelie 25819c3fd121SMatthew Ahrens /* Processing in order, therefore bytes_read should be increasing. */ 25829c3fd121SMatthew Ahrens ASSERT3U(rrd->bytes_read, >=, rwa->bytes_read); 25839c3fd121SMatthew Ahrens rwa->bytes_read = rrd->bytes_read; 25849c3fd121SMatthew Ahrens 2585a2cdcdd2SPaul Dagnelie switch (rrd->header.drr_type) { 2586a2cdcdd2SPaul Dagnelie case DRR_OBJECT: 2587a2cdcdd2SPaul Dagnelie { 2588a2cdcdd2SPaul Dagnelie struct drr_object *drro = &rrd->header.drr_u.drr_object; 2589a2cdcdd2SPaul Dagnelie err = receive_object(rwa, drro, rrd->payload); 2590a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2591a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2592a2cdcdd2SPaul Dagnelie return (err); 2593a2cdcdd2SPaul Dagnelie } 2594a2cdcdd2SPaul Dagnelie case DRR_FREEOBJECTS: 2595a2cdcdd2SPaul Dagnelie { 2596a2cdcdd2SPaul Dagnelie struct drr_freeobjects *drrfo = 2597a2cdcdd2SPaul Dagnelie &rrd->header.drr_u.drr_freeobjects; 2598a2cdcdd2SPaul Dagnelie return (receive_freeobjects(rwa, drrfo)); 2599a2cdcdd2SPaul Dagnelie } 2600a2cdcdd2SPaul Dagnelie case DRR_WRITE: 2601a2cdcdd2SPaul Dagnelie { 2602a2cdcdd2SPaul Dagnelie struct drr_write *drrw = &rrd->header.drr_u.drr_write; 2603a2cdcdd2SPaul Dagnelie err = receive_write(rwa, drrw, rrd->write_buf); 2604a2cdcdd2SPaul Dagnelie /* if receive_write() is successful, it consumes the arc_buf */ 2605a2cdcdd2SPaul Dagnelie if (err != 0) 2606a2cdcdd2SPaul Dagnelie dmu_return_arcbuf(rrd->write_buf); 2607a2cdcdd2SPaul Dagnelie rrd->write_buf = NULL; 2608a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2609a2cdcdd2SPaul Dagnelie return (err); 2610a2cdcdd2SPaul Dagnelie } 2611a2cdcdd2SPaul Dagnelie case DRR_WRITE_BYREF: 2612a2cdcdd2SPaul Dagnelie { 2613a2cdcdd2SPaul Dagnelie struct drr_write_byref *drrwbr = 2614a2cdcdd2SPaul Dagnelie &rrd->header.drr_u.drr_write_byref; 2615a2cdcdd2SPaul Dagnelie return (receive_write_byref(rwa, drrwbr)); 2616a2cdcdd2SPaul Dagnelie } 2617a2cdcdd2SPaul Dagnelie case DRR_WRITE_EMBEDDED: 2618a2cdcdd2SPaul Dagnelie { 2619a2cdcdd2SPaul Dagnelie struct drr_write_embedded *drrwe = 2620a2cdcdd2SPaul Dagnelie &rrd->header.drr_u.drr_write_embedded; 2621a2cdcdd2SPaul Dagnelie err = receive_write_embedded(rwa, drrwe, rrd->payload); 2622a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2623a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2624a2cdcdd2SPaul Dagnelie return (err); 2625a2cdcdd2SPaul Dagnelie } 2626a2cdcdd2SPaul Dagnelie case DRR_FREE: 2627a2cdcdd2SPaul Dagnelie { 2628a2cdcdd2SPaul Dagnelie struct drr_free *drrf = &rrd->header.drr_u.drr_free; 2629a2cdcdd2SPaul Dagnelie return (receive_free(rwa, drrf)); 2630a2cdcdd2SPaul Dagnelie } 2631a2cdcdd2SPaul Dagnelie case DRR_SPILL: 2632a2cdcdd2SPaul Dagnelie { 2633a2cdcdd2SPaul Dagnelie struct drr_spill *drrs = &rrd->header.drr_u.drr_spill; 2634a2cdcdd2SPaul Dagnelie err = receive_spill(rwa, drrs, rrd->payload); 2635a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2636a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2637a2cdcdd2SPaul Dagnelie return (err); 2638a2cdcdd2SPaul Dagnelie } 2639a2cdcdd2SPaul Dagnelie default: 2640a2cdcdd2SPaul Dagnelie return (SET_ERROR(EINVAL)); 2641a2cdcdd2SPaul Dagnelie } 2642a2cdcdd2SPaul Dagnelie } 2643a2cdcdd2SPaul Dagnelie 2644a2cdcdd2SPaul Dagnelie /* 2645a2cdcdd2SPaul Dagnelie * dmu_recv_stream's worker thread; pull records off the queue, and then call 2646a2cdcdd2SPaul Dagnelie * receive_process_record When we're done, signal the main thread and exit. 2647a2cdcdd2SPaul Dagnelie */ 2648a2cdcdd2SPaul Dagnelie static void 2649a2cdcdd2SPaul Dagnelie receive_writer_thread(void *arg) 2650a2cdcdd2SPaul Dagnelie { 2651a2cdcdd2SPaul Dagnelie struct receive_writer_arg *rwa = arg; 2652a2cdcdd2SPaul Dagnelie struct receive_record_arg *rrd; 2653a2cdcdd2SPaul Dagnelie for (rrd = bqueue_dequeue(&rwa->q); !rrd->eos_marker; 2654a2cdcdd2SPaul Dagnelie rrd = bqueue_dequeue(&rwa->q)) { 2655a2cdcdd2SPaul Dagnelie /* 2656a2cdcdd2SPaul Dagnelie * If there's an error, the main thread will stop putting things 2657a2cdcdd2SPaul Dagnelie * on the queue, but we need to clear everything in it before we 2658a2cdcdd2SPaul Dagnelie * can exit. 2659a2cdcdd2SPaul Dagnelie */ 2660a2cdcdd2SPaul Dagnelie if (rwa->err == 0) { 2661a2cdcdd2SPaul Dagnelie rwa->err = receive_process_record(rwa, rrd); 2662a2cdcdd2SPaul Dagnelie } else if (rrd->write_buf != NULL) { 2663a2cdcdd2SPaul Dagnelie dmu_return_arcbuf(rrd->write_buf); 2664a2cdcdd2SPaul Dagnelie rrd->write_buf = NULL; 2665a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2666a2cdcdd2SPaul Dagnelie } else if (rrd->payload != NULL) { 2667a2cdcdd2SPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 2668a2cdcdd2SPaul Dagnelie rrd->payload = NULL; 2669a2cdcdd2SPaul Dagnelie } 2670a2cdcdd2SPaul Dagnelie kmem_free(rrd, sizeof (*rrd)); 2671a2cdcdd2SPaul Dagnelie } 2672a2cdcdd2SPaul Dagnelie kmem_free(rrd, sizeof (*rrd)); 2673a2cdcdd2SPaul Dagnelie mutex_enter(&rwa->mutex); 2674a2cdcdd2SPaul Dagnelie rwa->done = B_TRUE; 2675a2cdcdd2SPaul Dagnelie cv_signal(&rwa->cv); 2676a2cdcdd2SPaul Dagnelie mutex_exit(&rwa->mutex); 2677a2cdcdd2SPaul Dagnelie } 2678a2cdcdd2SPaul Dagnelie 26799c3fd121SMatthew Ahrens static int 26809c3fd121SMatthew Ahrens resume_check(struct receive_arg *ra, nvlist_t *begin_nvl) 26819c3fd121SMatthew Ahrens { 26829c3fd121SMatthew Ahrens uint64_t val; 26839c3fd121SMatthew Ahrens objset_t *mos = dmu_objset_pool(ra->os)->dp_meta_objset; 26849c3fd121SMatthew Ahrens uint64_t dsobj = dmu_objset_id(ra->os); 26859c3fd121SMatthew Ahrens uint64_t resume_obj, resume_off; 26869c3fd121SMatthew Ahrens 26879c3fd121SMatthew Ahrens if (nvlist_lookup_uint64(begin_nvl, 26889c3fd121SMatthew Ahrens "resume_object", &resume_obj) != 0 || 26899c3fd121SMatthew Ahrens nvlist_lookup_uint64(begin_nvl, 26909c3fd121SMatthew Ahrens "resume_offset", &resume_off) != 0) { 26919c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 26929c3fd121SMatthew Ahrens } 26939c3fd121SMatthew Ahrens VERIFY0(zap_lookup(mos, dsobj, 26949c3fd121SMatthew Ahrens DS_FIELD_RESUME_OBJECT, sizeof (val), 1, &val)); 26959c3fd121SMatthew Ahrens if (resume_obj != val) 26969c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 26979c3fd121SMatthew Ahrens VERIFY0(zap_lookup(mos, dsobj, 26989c3fd121SMatthew Ahrens DS_FIELD_RESUME_OFFSET, sizeof (val), 1, &val)); 26999c3fd121SMatthew Ahrens if (resume_off != val) 27009c3fd121SMatthew Ahrens return (SET_ERROR(EINVAL)); 27019c3fd121SMatthew Ahrens 27029c3fd121SMatthew Ahrens return (0); 27039c3fd121SMatthew Ahrens } 27049c3fd121SMatthew Ahrens 2705a2cdcdd2SPaul Dagnelie /* 2706a2cdcdd2SPaul Dagnelie * Read in the stream's records, one by one, and apply them to the pool. There 2707a2cdcdd2SPaul Dagnelie * are two threads involved; the thread that calls this function will spin up a 2708a2cdcdd2SPaul Dagnelie * worker thread, read the records off the stream one by one, and issue 2709a2cdcdd2SPaul Dagnelie * prefetches for any necessary indirect blocks. It will then push the records 2710a2cdcdd2SPaul Dagnelie * onto an internal blocking queue. The worker thread will pull the records off 2711a2cdcdd2SPaul Dagnelie * the queue, and actually write the data into the DMU. This way, the worker 2712a2cdcdd2SPaul Dagnelie * thread doesn't have to wait for reads to complete, since everything it needs 2713a2cdcdd2SPaul Dagnelie * (the indirect blocks) will be prefetched. 2714a2cdcdd2SPaul Dagnelie * 27153cb34c60Sahrens * NB: callers *must* call dmu_recv_end() if this succeeds. 27163cb34c60Sahrens */ 2717efb80947Sahrens int 2718c99e4bdcSChris Kirby dmu_recv_stream(dmu_recv_cookie_t *drc, vnode_t *vp, offset_t *voffp, 2719c99e4bdcSChris Kirby int cleanup_fd, uint64_t *action_handlep) 2720efb80947Sahrens { 272198110f08SMatthew Ahrens int err = 0; 2722a2cdcdd2SPaul Dagnelie struct receive_arg ra = { 0 }; 2723a2cdcdd2SPaul Dagnelie struct receive_writer_arg rwa = { 0 }; 27249e69d7d0SLori Alt int featureflags; 27259c3fd121SMatthew Ahrens nvlist_t *begin_nvl = NULL; 2726efb80947Sahrens 27273b2aab18SMatthew Ahrens ra.byteswap = drc->drc_byteswap; 27283b2aab18SMatthew Ahrens ra.cksum = drc->drc_cksum; 27293cb34c60Sahrens ra.vp = vp; 27303cb34c60Sahrens ra.voff = *voffp; 27319c3fd121SMatthew Ahrens 27329c3fd121SMatthew Ahrens if (dsl_dataset_is_zapified(drc->drc_ds)) { 27339c3fd121SMatthew Ahrens (void) zap_lookup(drc->drc_ds->ds_dir->dd_pool->dp_meta_objset, 27349c3fd121SMatthew Ahrens drc->drc_ds->ds_object, DS_FIELD_RESUME_BYTES, 27359c3fd121SMatthew Ahrens sizeof (ra.bytes_read), 1, &ra.bytes_read); 27369c3fd121SMatthew Ahrens } 27379c3fd121SMatthew Ahrens 2738*68ecb2ecSPaul Dagnelie objlist_create(&ra.ignore_objlist); 2739efb80947Sahrens 27403cb34c60Sahrens /* these were verified in dmu_recv_begin */ 27413b2aab18SMatthew Ahrens ASSERT3U(DMU_GET_STREAM_HDRTYPE(drc->drc_drrb->drr_versioninfo), ==, 27429e69d7d0SLori Alt DMU_SUBSTREAM); 27433b2aab18SMatthew Ahrens ASSERT3U(drc->drc_drrb->drr_type, <, DMU_OST_NUMTYPES); 2744efb80947Sahrens 2745efb80947Sahrens /* 2746efb80947Sahrens * Open the objset we are modifying. 2747efb80947Sahrens */ 274898110f08SMatthew Ahrens VERIFY0(dmu_objset_from_ds(drc->drc_ds, &ra.os)); 2749efb80947Sahrens 2750c1379625SJustin T. Gibbs ASSERT(dsl_dataset_phys(drc->drc_ds)->ds_flags & DS_FLAG_INCONSISTENT); 2751efb80947Sahrens 27529e69d7d0SLori Alt featureflags = DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo); 27539e69d7d0SLori Alt 27549e69d7d0SLori Alt /* if this stream is dedup'ed, set up the avl tree for guid mapping */ 27559e69d7d0SLori Alt if (featureflags & DMU_BACKUP_FEATURE_DEDUP) { 2756a7f53a56SChris Kirby minor_t minor; 2757a7f53a56SChris Kirby 2758c99e4bdcSChris Kirby if (cleanup_fd == -1) { 2759be6fd75aSMatthew Ahrens ra.err = SET_ERROR(EBADF); 2760c99e4bdcSChris Kirby goto out; 2761c99e4bdcSChris Kirby } 2762a7f53a56SChris Kirby ra.err = zfs_onexit_fd_hold(cleanup_fd, &minor); 27633b2aab18SMatthew Ahrens if (ra.err != 0) { 2764a7f53a56SChris Kirby cleanup_fd = -1; 2765a7f53a56SChris Kirby goto out; 2766a7f53a56SChris Kirby } 2767a7f53a56SChris Kirby 2768c99e4bdcSChris Kirby if (*action_handlep == 0) { 2769a2cdcdd2SPaul Dagnelie rwa.guid_to_ds_map = 2770c99e4bdcSChris Kirby kmem_alloc(sizeof (avl_tree_t), KM_SLEEP); 2771a2cdcdd2SPaul Dagnelie avl_create(rwa.guid_to_ds_map, guid_compare, 2772c99e4bdcSChris Kirby sizeof (guid_map_entry_t), 2773c99e4bdcSChris Kirby offsetof(guid_map_entry_t, avlnode)); 277498110f08SMatthew Ahrens err = zfs_onexit_add_cb(minor, 2775a2cdcdd2SPaul Dagnelie free_guid_map_onexit, rwa.guid_to_ds_map, 2776c99e4bdcSChris Kirby action_handlep); 27773b2aab18SMatthew Ahrens if (ra.err != 0) 2778c99e4bdcSChris Kirby goto out; 2779c99e4bdcSChris Kirby } else { 278098110f08SMatthew Ahrens err = zfs_onexit_cb_data(minor, *action_handlep, 2781a2cdcdd2SPaul Dagnelie (void **)&rwa.guid_to_ds_map); 27823b2aab18SMatthew Ahrens if (ra.err != 0) 2783c99e4bdcSChris Kirby goto out; 2784c99e4bdcSChris Kirby } 2785ec5cf9d5SAlexander Stetsenko 2786a2cdcdd2SPaul Dagnelie drc->drc_guid_to_ds_map = rwa.guid_to_ds_map; 27879e69d7d0SLori Alt } 27889e69d7d0SLori Alt 27899c3fd121SMatthew Ahrens uint32_t payloadlen = drc->drc_drr_begin->drr_payloadlen; 27909c3fd121SMatthew Ahrens void *payload = NULL; 27919c3fd121SMatthew Ahrens if (payloadlen != 0) 27929c3fd121SMatthew Ahrens payload = kmem_alloc(payloadlen, KM_SLEEP); 27939c3fd121SMatthew Ahrens 27949c3fd121SMatthew Ahrens err = receive_read_payload_and_next_header(&ra, payloadlen, payload); 27959c3fd121SMatthew Ahrens if (err != 0) { 27969c3fd121SMatthew Ahrens if (payloadlen != 0) 27979c3fd121SMatthew Ahrens kmem_free(payload, payloadlen); 279898110f08SMatthew Ahrens goto out; 27999c3fd121SMatthew Ahrens } 28009c3fd121SMatthew Ahrens if (payloadlen != 0) { 28019c3fd121SMatthew Ahrens err = nvlist_unpack(payload, payloadlen, &begin_nvl, KM_SLEEP); 28029c3fd121SMatthew Ahrens kmem_free(payload, payloadlen); 28039c3fd121SMatthew Ahrens if (err != 0) 28049c3fd121SMatthew Ahrens goto out; 28059c3fd121SMatthew Ahrens } 28069c3fd121SMatthew Ahrens 28079c3fd121SMatthew Ahrens if (featureflags & DMU_BACKUP_FEATURE_RESUMING) { 28089c3fd121SMatthew Ahrens err = resume_check(&ra, begin_nvl); 28099c3fd121SMatthew Ahrens if (err != 0) 28109c3fd121SMatthew Ahrens goto out; 28119c3fd121SMatthew Ahrens } 281298110f08SMatthew Ahrens 2813a2cdcdd2SPaul Dagnelie (void) bqueue_init(&rwa.q, zfs_recv_queue_length, 2814a2cdcdd2SPaul Dagnelie offsetof(struct receive_record_arg, node)); 2815a2cdcdd2SPaul Dagnelie cv_init(&rwa.cv, NULL, CV_DEFAULT, NULL); 2816a2cdcdd2SPaul Dagnelie mutex_init(&rwa.mutex, NULL, MUTEX_DEFAULT, NULL); 2817a2cdcdd2SPaul Dagnelie rwa.os = ra.os; 2818a2cdcdd2SPaul Dagnelie rwa.byteswap = drc->drc_byteswap; 28199c3fd121SMatthew Ahrens rwa.resumable = drc->drc_resumable; 2820a2cdcdd2SPaul Dagnelie 2821a2cdcdd2SPaul Dagnelie (void) thread_create(NULL, 0, receive_writer_thread, &rwa, 0, curproc, 2822a2cdcdd2SPaul Dagnelie TS_RUN, minclsyspri); 2823a2cdcdd2SPaul Dagnelie /* 2824a2cdcdd2SPaul Dagnelie * We're reading rwa.err without locks, which is safe since we are the 2825a2cdcdd2SPaul Dagnelie * only reader, and the worker thread is the only writer. It's ok if we 2826a2cdcdd2SPaul Dagnelie * miss a write for an iteration or two of the loop, since the writer 2827a2cdcdd2SPaul Dagnelie * thread will keep freeing records we send it until we send it an eos 2828a2cdcdd2SPaul Dagnelie * marker. 2829a2cdcdd2SPaul Dagnelie * 2830a2cdcdd2SPaul Dagnelie * We can leave this loop in 3 ways: First, if rwa.err is 2831a2cdcdd2SPaul Dagnelie * non-zero. In that case, the writer thread will free the rrd we just 2832a2cdcdd2SPaul Dagnelie * pushed. Second, if we're interrupted; in that case, either it's the 2833a2cdcdd2SPaul Dagnelie * first loop and ra.rrd was never allocated, or it's later, and ra.rrd 2834a2cdcdd2SPaul Dagnelie * has been handed off to the writer thread who will free it. Finally, 2835a2cdcdd2SPaul Dagnelie * if receive_read_record fails or we're at the end of the stream, then 2836a2cdcdd2SPaul Dagnelie * we free ra.rrd and exit. 2837a2cdcdd2SPaul Dagnelie */ 2838a2cdcdd2SPaul Dagnelie while (rwa.err == 0) { 2839efb80947Sahrens if (issig(JUSTLOOKING) && issig(FORREAL)) { 284098110f08SMatthew Ahrens err = SET_ERROR(EINTR); 284198110f08SMatthew Ahrens break; 2842efb80947Sahrens } 2843efb80947Sahrens 2844a2cdcdd2SPaul Dagnelie ASSERT3P(ra.rrd, ==, NULL); 2845a2cdcdd2SPaul Dagnelie ra.rrd = ra.next_rrd; 2846a2cdcdd2SPaul Dagnelie ra.next_rrd = NULL; 2847a2cdcdd2SPaul Dagnelie /* Allocates and loads header into ra.next_rrd */ 2848a2cdcdd2SPaul Dagnelie err = receive_read_record(&ra); 2849efb80947Sahrens 2850a2cdcdd2SPaul Dagnelie if (ra.rrd->header.drr_type == DRR_END || err != 0) { 2851a2cdcdd2SPaul Dagnelie kmem_free(ra.rrd, sizeof (*ra.rrd)); 2852a2cdcdd2SPaul Dagnelie ra.rrd = NULL; 28530a586ceaSMark Shellenbaum break; 2854a2cdcdd2SPaul Dagnelie } 2855a2cdcdd2SPaul Dagnelie 2856a2cdcdd2SPaul Dagnelie bqueue_enqueue(&rwa.q, ra.rrd, 2857a2cdcdd2SPaul Dagnelie sizeof (struct receive_record_arg) + ra.rrd->payload_size); 2858a2cdcdd2SPaul Dagnelie ra.rrd = NULL; 2859a2cdcdd2SPaul Dagnelie } 2860a2cdcdd2SPaul Dagnelie if (ra.next_rrd == NULL) 2861a2cdcdd2SPaul Dagnelie ra.next_rrd = kmem_zalloc(sizeof (*ra.next_rrd), KM_SLEEP); 2862a2cdcdd2SPaul Dagnelie ra.next_rrd->eos_marker = B_TRUE; 2863a2cdcdd2SPaul Dagnelie bqueue_enqueue(&rwa.q, ra.next_rrd, 1); 2864a2cdcdd2SPaul Dagnelie 2865a2cdcdd2SPaul Dagnelie mutex_enter(&rwa.mutex); 2866a2cdcdd2SPaul Dagnelie while (!rwa.done) { 2867a2cdcdd2SPaul Dagnelie cv_wait(&rwa.cv, &rwa.mutex); 2868efb80947Sahrens } 2869a2cdcdd2SPaul Dagnelie mutex_exit(&rwa.mutex); 2870a2cdcdd2SPaul Dagnelie 2871a2cdcdd2SPaul Dagnelie cv_destroy(&rwa.cv); 2872a2cdcdd2SPaul Dagnelie mutex_destroy(&rwa.mutex); 2873a2cdcdd2SPaul Dagnelie bqueue_destroy(&rwa.q); 2874a2cdcdd2SPaul Dagnelie if (err == 0) 2875a2cdcdd2SPaul Dagnelie err = rwa.err; 2876efb80947Sahrens 2877efb80947Sahrens out: 28789c3fd121SMatthew Ahrens nvlist_free(begin_nvl); 2879a7f53a56SChris Kirby if ((featureflags & DMU_BACKUP_FEATURE_DEDUP) && (cleanup_fd != -1)) 2880a7f53a56SChris Kirby zfs_onexit_fd_rele(cleanup_fd); 2881a7f53a56SChris Kirby 288298110f08SMatthew Ahrens if (err != 0) { 2883efb80947Sahrens /* 28849c3fd121SMatthew Ahrens * Clean up references. If receive is not resumable, 28859c3fd121SMatthew Ahrens * destroy what we created, so we don't leave it in 28869c3fd121SMatthew Ahrens * the inconsistent state. 2887efb80947Sahrens */ 28883b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(drc); 2889efb80947Sahrens } 2890efb80947Sahrens 28913cb34c60Sahrens *voffp = ra.voff; 2892*68ecb2ecSPaul Dagnelie objlist_destroy(&ra.ignore_objlist); 289398110f08SMatthew Ahrens return (err); 2894efb80947Sahrens } 2895f18faf3fSek 28963cb34c60Sahrens static int 28973b2aab18SMatthew Ahrens dmu_recv_end_check(void *arg, dmu_tx_t *tx) 28983cb34c60Sahrens { 28993b2aab18SMatthew Ahrens dmu_recv_cookie_t *drc = arg; 29003b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 29013b2aab18SMatthew Ahrens int error; 29023b2aab18SMatthew Ahrens 29033b2aab18SMatthew Ahrens ASSERT3P(drc->drc_ds->ds_owner, ==, dmu_recv_tag); 29043cb34c60Sahrens 29053b2aab18SMatthew Ahrens if (!drc->drc_newfs) { 29063b2aab18SMatthew Ahrens dsl_dataset_t *origin_head; 29073b2aab18SMatthew Ahrens 29083b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, drc->drc_tofs, FTAG, &origin_head); 29093b2aab18SMatthew Ahrens if (error != 0) 29103b2aab18SMatthew Ahrens return (error); 291134f2f8cfSMatthew Ahrens if (drc->drc_force) { 291234f2f8cfSMatthew Ahrens /* 291334f2f8cfSMatthew Ahrens * We will destroy any snapshots in tofs (i.e. before 291434f2f8cfSMatthew Ahrens * origin_head) that are after the origin (which is 291534f2f8cfSMatthew Ahrens * the snap before drc_ds, because drc_ds can not 291634f2f8cfSMatthew Ahrens * have any snaps of its own). 291734f2f8cfSMatthew Ahrens */ 2918c1379625SJustin T. Gibbs uint64_t obj; 2919c1379625SJustin T. Gibbs 2920c1379625SJustin T. Gibbs obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 2921c1379625SJustin T. Gibbs while (obj != 2922c1379625SJustin T. Gibbs dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { 292334f2f8cfSMatthew Ahrens dsl_dataset_t *snap; 292434f2f8cfSMatthew Ahrens error = dsl_dataset_hold_obj(dp, obj, FTAG, 292534f2f8cfSMatthew Ahrens &snap); 292634f2f8cfSMatthew Ahrens if (error != 0) 2927beddaa9cSAndriy Gapon break; 292834f2f8cfSMatthew Ahrens if (snap->ds_dir != origin_head->ds_dir) 292934f2f8cfSMatthew Ahrens error = SET_ERROR(EINVAL); 293034f2f8cfSMatthew Ahrens if (error == 0) { 293134f2f8cfSMatthew Ahrens error = dsl_destroy_snapshot_check_impl( 293234f2f8cfSMatthew Ahrens snap, B_FALSE); 293334f2f8cfSMatthew Ahrens } 2934c1379625SJustin T. Gibbs obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 293534f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 293634f2f8cfSMatthew Ahrens if (error != 0) 2937beddaa9cSAndriy Gapon break; 2938beddaa9cSAndriy Gapon } 2939beddaa9cSAndriy Gapon if (error != 0) { 2940beddaa9cSAndriy Gapon dsl_dataset_rele(origin_head, FTAG); 2941beddaa9cSAndriy Gapon return (error); 294234f2f8cfSMatthew Ahrens } 294334f2f8cfSMatthew Ahrens } 29443b2aab18SMatthew Ahrens error = dsl_dataset_clone_swap_check_impl(drc->drc_ds, 294591948b51SKeith M Wesolowski origin_head, drc->drc_force, drc->drc_owner, tx); 29463b2aab18SMatthew Ahrens if (error != 0) { 29473b2aab18SMatthew Ahrens dsl_dataset_rele(origin_head, FTAG); 29483b2aab18SMatthew Ahrens return (error); 29493b2aab18SMatthew Ahrens } 29503b2aab18SMatthew Ahrens error = dsl_dataset_snapshot_check_impl(origin_head, 2951a2afb611SJerry Jelinek drc->drc_tosnap, tx, B_TRUE, 1, drc->drc_cred); 29523b2aab18SMatthew Ahrens dsl_dataset_rele(origin_head, FTAG); 29533b2aab18SMatthew Ahrens if (error != 0) 29543b2aab18SMatthew Ahrens return (error); 29553b2aab18SMatthew Ahrens 29563b2aab18SMatthew Ahrens error = dsl_destroy_head_check_impl(drc->drc_ds, 1); 29573b2aab18SMatthew Ahrens } else { 29583b2aab18SMatthew Ahrens error = dsl_dataset_snapshot_check_impl(drc->drc_ds, 2959a2afb611SJerry Jelinek drc->drc_tosnap, tx, B_TRUE, 1, drc->drc_cred); 29603b2aab18SMatthew Ahrens } 29613b2aab18SMatthew Ahrens return (error); 29623cb34c60Sahrens } 29633cb34c60Sahrens 29643cb34c60Sahrens static void 29653b2aab18SMatthew Ahrens dmu_recv_end_sync(void *arg, dmu_tx_t *tx) 29663cb34c60Sahrens { 29673b2aab18SMatthew Ahrens dmu_recv_cookie_t *drc = arg; 29683b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 29693b2aab18SMatthew Ahrens 29703b2aab18SMatthew Ahrens spa_history_log_internal_ds(drc->drc_ds, "finish receiving", 29713b2aab18SMatthew Ahrens tx, "snap=%s", drc->drc_tosnap); 29723b2aab18SMatthew Ahrens 29733b2aab18SMatthew Ahrens if (!drc->drc_newfs) { 29743b2aab18SMatthew Ahrens dsl_dataset_t *origin_head; 29753b2aab18SMatthew Ahrens 29763b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, drc->drc_tofs, FTAG, 29773b2aab18SMatthew Ahrens &origin_head)); 297834f2f8cfSMatthew Ahrens 297934f2f8cfSMatthew Ahrens if (drc->drc_force) { 298034f2f8cfSMatthew Ahrens /* 298134f2f8cfSMatthew Ahrens * Destroy any snapshots of drc_tofs (origin_head) 298234f2f8cfSMatthew Ahrens * after the origin (the snap before drc_ds). 298334f2f8cfSMatthew Ahrens */ 2984c1379625SJustin T. Gibbs uint64_t obj; 2985c1379625SJustin T. Gibbs 2986c1379625SJustin T. Gibbs obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 2987c1379625SJustin T. Gibbs while (obj != 2988c1379625SJustin T. Gibbs dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { 298934f2f8cfSMatthew Ahrens dsl_dataset_t *snap; 299034f2f8cfSMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(dp, obj, FTAG, 299134f2f8cfSMatthew Ahrens &snap)); 299234f2f8cfSMatthew Ahrens ASSERT3P(snap->ds_dir, ==, origin_head->ds_dir); 2993c1379625SJustin T. Gibbs obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 299434f2f8cfSMatthew Ahrens dsl_destroy_snapshot_sync_impl(snap, 299534f2f8cfSMatthew Ahrens B_FALSE, tx); 299634f2f8cfSMatthew Ahrens dsl_dataset_rele(snap, FTAG); 299734f2f8cfSMatthew Ahrens } 299834f2f8cfSMatthew Ahrens } 299934f2f8cfSMatthew Ahrens VERIFY3P(drc->drc_ds->ds_prev, ==, 300034f2f8cfSMatthew Ahrens origin_head->ds_prev); 300134f2f8cfSMatthew Ahrens 30023b2aab18SMatthew Ahrens dsl_dataset_clone_swap_sync_impl(drc->drc_ds, 30033b2aab18SMatthew Ahrens origin_head, tx); 30043b2aab18SMatthew Ahrens dsl_dataset_snapshot_sync_impl(origin_head, 30053b2aab18SMatthew Ahrens drc->drc_tosnap, tx); 30063b2aab18SMatthew Ahrens 30073b2aab18SMatthew Ahrens /* set snapshot's creation time and guid */ 30083b2aab18SMatthew Ahrens dmu_buf_will_dirty(origin_head->ds_prev->ds_dbuf, tx); 3009c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head->ds_prev)->ds_creation_time = 30103b2aab18SMatthew Ahrens drc->drc_drrb->drr_creation_time; 3011c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head->ds_prev)->ds_guid = 30123b2aab18SMatthew Ahrens drc->drc_drrb->drr_toguid; 3013c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head->ds_prev)->ds_flags &= 30143b2aab18SMatthew Ahrens ~DS_FLAG_INCONSISTENT; 30153b2aab18SMatthew Ahrens 30163b2aab18SMatthew Ahrens dmu_buf_will_dirty(origin_head->ds_dbuf, tx); 3017c1379625SJustin T. Gibbs dsl_dataset_phys(origin_head)->ds_flags &= 3018c1379625SJustin T. Gibbs ~DS_FLAG_INCONSISTENT; 30193b2aab18SMatthew Ahrens 30203b2aab18SMatthew Ahrens dsl_dataset_rele(origin_head, FTAG); 30213b2aab18SMatthew Ahrens dsl_destroy_head_sync_impl(drc->drc_ds, tx); 302291948b51SKeith M Wesolowski 302391948b51SKeith M Wesolowski if (drc->drc_owner != NULL) 302491948b51SKeith M Wesolowski VERIFY3P(origin_head->ds_owner, ==, drc->drc_owner); 30253b2aab18SMatthew Ahrens } else { 30263b2aab18SMatthew Ahrens dsl_dataset_t *ds = drc->drc_ds; 30273cb34c60Sahrens 30283b2aab18SMatthew Ahrens dsl_dataset_snapshot_sync_impl(ds, drc->drc_tosnap, tx); 30293cb34c60Sahrens 30303b2aab18SMatthew Ahrens /* set snapshot's creation time and guid */ 30313b2aab18SMatthew Ahrens dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); 3032c1379625SJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_creation_time = 30333b2aab18SMatthew Ahrens drc->drc_drrb->drr_creation_time; 3034c1379625SJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_guid = 3035c1379625SJustin T. Gibbs drc->drc_drrb->drr_toguid; 3036c1379625SJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_flags &= 3037c1379625SJustin T. Gibbs ~DS_FLAG_INCONSISTENT; 30383cb34c60Sahrens 30393b2aab18SMatthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx); 3040c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; 30419c3fd121SMatthew Ahrens if (dsl_dataset_has_resume_receive_state(ds)) { 30429c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30439c3fd121SMatthew Ahrens DS_FIELD_RESUME_FROMGUID, tx); 30449c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30459c3fd121SMatthew Ahrens DS_FIELD_RESUME_OBJECT, tx); 30469c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30479c3fd121SMatthew Ahrens DS_FIELD_RESUME_OFFSET, tx); 30489c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30499c3fd121SMatthew Ahrens DS_FIELD_RESUME_BYTES, tx); 30509c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30519c3fd121SMatthew Ahrens DS_FIELD_RESUME_TOGUID, tx); 30529c3fd121SMatthew Ahrens (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 30539c3fd121SMatthew Ahrens DS_FIELD_RESUME_TONAME, tx); 30549c3fd121SMatthew Ahrens } 30553b2aab18SMatthew Ahrens } 3056c1379625SJustin T. Gibbs drc->drc_newsnapobj = dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj; 30573b2aab18SMatthew Ahrens /* 30583b2aab18SMatthew Ahrens * Release the hold from dmu_recv_begin. This must be done before 30593b2aab18SMatthew Ahrens * we return to open context, so that when we free the dataset's dnode, 30603b2aab18SMatthew Ahrens * we can evict its bonus buffer. 30613b2aab18SMatthew Ahrens */ 30623b2aab18SMatthew Ahrens dsl_dataset_disown(drc->drc_ds, dmu_recv_tag); 30633b2aab18SMatthew Ahrens drc->drc_ds = NULL; 30643cb34c60Sahrens } 30653cb34c60Sahrens 3066ec5cf9d5SAlexander Stetsenko static int 30673b2aab18SMatthew Ahrens add_ds_to_guidmap(const char *name, avl_tree_t *guid_map, uint64_t snapobj) 3068ec5cf9d5SAlexander Stetsenko { 30693b2aab18SMatthew Ahrens dsl_pool_t *dp; 3070ec5cf9d5SAlexander Stetsenko dsl_dataset_t *snapds; 3071ec5cf9d5SAlexander Stetsenko guid_map_entry_t *gmep; 3072ec5cf9d5SAlexander Stetsenko int err; 3073ec5cf9d5SAlexander Stetsenko 3074ec5cf9d5SAlexander Stetsenko ASSERT(guid_map != NULL); 3075ec5cf9d5SAlexander Stetsenko 30763b2aab18SMatthew Ahrens err = dsl_pool_hold(name, FTAG, &dp); 30773b2aab18SMatthew Ahrens if (err != 0) 30783b2aab18SMatthew Ahrens return (err); 3079de8d9cffSMatthew Ahrens gmep = kmem_alloc(sizeof (*gmep), KM_SLEEP); 3080de8d9cffSMatthew Ahrens err = dsl_dataset_hold_obj(dp, snapobj, gmep, &snapds); 3081ec5cf9d5SAlexander Stetsenko if (err == 0) { 3082c1379625SJustin T. Gibbs gmep->guid = dsl_dataset_phys(snapds)->ds_guid; 3083ec5cf9d5SAlexander Stetsenko gmep->gme_ds = snapds; 3084ec5cf9d5SAlexander Stetsenko avl_add(guid_map, gmep); 30853b2aab18SMatthew Ahrens dsl_dataset_long_hold(snapds, gmep); 3086de8d9cffSMatthew Ahrens } else { 3087de8d9cffSMatthew Ahrens kmem_free(gmep, sizeof (*gmep)); 3088ec5cf9d5SAlexander Stetsenko } 3089ec5cf9d5SAlexander Stetsenko 30903b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 3091ec5cf9d5SAlexander Stetsenko return (err); 3092ec5cf9d5SAlexander Stetsenko } 3093ec5cf9d5SAlexander Stetsenko 30943b2aab18SMatthew Ahrens static int dmu_recv_end_modified_blocks = 3; 30953b2aab18SMatthew Ahrens 3096ae46e4c7SMatthew Ahrens static int 3097ae46e4c7SMatthew Ahrens dmu_recv_existing_end(dmu_recv_cookie_t *drc) 3098f18faf3fSek { 30993b2aab18SMatthew Ahrens int error; 31003b2aab18SMatthew Ahrens char name[MAXNAMELEN]; 31013cb34c60Sahrens 31023b2aab18SMatthew Ahrens #ifdef _KERNEL 31033b2aab18SMatthew Ahrens /* 31043b2aab18SMatthew Ahrens * We will be destroying the ds; make sure its origin is unmounted if 31053b2aab18SMatthew Ahrens * necessary. 31063b2aab18SMatthew Ahrens */ 31073b2aab18SMatthew Ahrens dsl_dataset_name(drc->drc_ds, name); 31083b2aab18SMatthew Ahrens zfs_destroy_unmount_origin(name); 31093b2aab18SMatthew Ahrens #endif 31103cb34c60Sahrens 31113b2aab18SMatthew Ahrens error = dsl_sync_task(drc->drc_tofs, 31123b2aab18SMatthew Ahrens dmu_recv_end_check, dmu_recv_end_sync, drc, 31137d46dc6cSMatthew Ahrens dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL); 31143cb34c60Sahrens 31153b2aab18SMatthew Ahrens if (error != 0) 31163b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(drc); 31173b2aab18SMatthew Ahrens return (error); 3118f18faf3fSek } 3119ae46e4c7SMatthew Ahrens 3120ae46e4c7SMatthew Ahrens static int 3121ae46e4c7SMatthew Ahrens dmu_recv_new_end(dmu_recv_cookie_t *drc) 3122ae46e4c7SMatthew Ahrens { 31233b2aab18SMatthew Ahrens int error; 3124ae46e4c7SMatthew Ahrens 31253b2aab18SMatthew Ahrens error = dsl_sync_task(drc->drc_tofs, 31263b2aab18SMatthew Ahrens dmu_recv_end_check, dmu_recv_end_sync, drc, 31277d46dc6cSMatthew Ahrens dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL); 3128ae46e4c7SMatthew Ahrens 31293b2aab18SMatthew Ahrens if (error != 0) { 31303b2aab18SMatthew Ahrens dmu_recv_cleanup_ds(drc); 31313b2aab18SMatthew Ahrens } else if (drc->drc_guid_to_ds_map != NULL) { 31323b2aab18SMatthew Ahrens (void) add_ds_to_guidmap(drc->drc_tofs, 31333b2aab18SMatthew Ahrens drc->drc_guid_to_ds_map, 31343b2aab18SMatthew Ahrens drc->drc_newsnapobj); 3135ae46e4c7SMatthew Ahrens } 31363b2aab18SMatthew Ahrens return (error); 3137ae46e4c7SMatthew Ahrens } 3138ae46e4c7SMatthew Ahrens 3139ae46e4c7SMatthew Ahrens int 314091948b51SKeith M Wesolowski dmu_recv_end(dmu_recv_cookie_t *drc, void *owner) 3141ae46e4c7SMatthew Ahrens { 314291948b51SKeith M Wesolowski drc->drc_owner = owner; 314391948b51SKeith M Wesolowski 31443b2aab18SMatthew Ahrens if (drc->drc_newfs) 3145ae46e4c7SMatthew Ahrens return (dmu_recv_new_end(drc)); 31463b2aab18SMatthew Ahrens else 31473b2aab18SMatthew Ahrens return (dmu_recv_existing_end(drc)); 3148ae46e4c7SMatthew Ahrens } 31492f3d8780SMatthew Ahrens 31502f3d8780SMatthew Ahrens /* 31512f3d8780SMatthew Ahrens * Return TRUE if this objset is currently being received into. 31522f3d8780SMatthew Ahrens */ 31532f3d8780SMatthew Ahrens boolean_t 31542f3d8780SMatthew Ahrens dmu_objset_is_receiving(objset_t *os) 31552f3d8780SMatthew Ahrens { 31562f3d8780SMatthew Ahrens return (os->os_dsl_dataset != NULL && 31572f3d8780SMatthew Ahrens os->os_dsl_dataset->ds_owner == dmu_recv_tag); 31582f3d8780SMatthew Ahrens } 3159