1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 2206e0070dSMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23edf345e6SMatthew Ahrens * Copyright (c) 2012, 2014 by Delphix. All rights reserved. 24aad02571SSaso Kiselkov * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25a2afb611SJerry Jelinek * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26fa9e4066Sahrens */ 27fa9e4066Sahrens 2855da60b9SMark J Musante /* Portions Copyright 2010 Robert Milkowski */ 2955da60b9SMark J Musante 30ecd6cf80Smarks #include <sys/cred.h> 31fa9e4066Sahrens #include <sys/zfs_context.h> 32fa9e4066Sahrens #include <sys/dmu_objset.h> 33fa9e4066Sahrens #include <sys/dsl_dir.h> 34fa9e4066Sahrens #include <sys/dsl_dataset.h> 35fa9e4066Sahrens #include <sys/dsl_prop.h> 36fa9e4066Sahrens #include <sys/dsl_pool.h> 371d452cf5Sahrens #include <sys/dsl_synctask.h> 38ecd6cf80Smarks #include <sys/dsl_deleg.h> 39fa9e4066Sahrens #include <sys/dnode.h> 40fa9e4066Sahrens #include <sys/dbuf.h> 41a2eea2e1Sahrens #include <sys/zvol.h> 42fa9e4066Sahrens #include <sys/dmu_tx.h> 43fa9e4066Sahrens #include <sys/zap.h> 44fa9e4066Sahrens #include <sys/zil.h> 45fa9e4066Sahrens #include <sys/dmu_impl.h> 46ecd6cf80Smarks #include <sys/zfs_ioctl.h> 470a586ceaSMark Shellenbaum #include <sys/sa.h> 4899d5e173STim Haley #include <sys/zfs_onexit.h> 493b2aab18SMatthew Ahrens #include <sys/dsl_destroy.h> 50fa9e4066Sahrens 51744947dcSTom Erickson /* 52744947dcSTom Erickson * Needed to close a window in dnode_move() that allows the objset to be freed 53744947dcSTom Erickson * before it can be safely accessed. 54744947dcSTom Erickson */ 55744947dcSTom Erickson krwlock_t os_lock; 56744947dcSTom Erickson 57744947dcSTom Erickson void 58744947dcSTom Erickson dmu_objset_init(void) 59744947dcSTom Erickson { 60744947dcSTom Erickson rw_init(&os_lock, NULL, RW_DEFAULT, NULL); 61744947dcSTom Erickson } 62744947dcSTom Erickson 63744947dcSTom Erickson void 64744947dcSTom Erickson dmu_objset_fini(void) 65744947dcSTom Erickson { 66744947dcSTom Erickson rw_destroy(&os_lock); 67744947dcSTom Erickson } 68744947dcSTom Erickson 69fa9e4066Sahrens spa_t * 70fa9e4066Sahrens dmu_objset_spa(objset_t *os) 71fa9e4066Sahrens { 72503ad85cSMatthew Ahrens return (os->os_spa); 73fa9e4066Sahrens } 74fa9e4066Sahrens 75fa9e4066Sahrens zilog_t * 76fa9e4066Sahrens dmu_objset_zil(objset_t *os) 77fa9e4066Sahrens { 78503ad85cSMatthew Ahrens return (os->os_zil); 79fa9e4066Sahrens } 80fa9e4066Sahrens 81fa9e4066Sahrens dsl_pool_t * 82fa9e4066Sahrens dmu_objset_pool(objset_t *os) 83fa9e4066Sahrens { 84fa9e4066Sahrens dsl_dataset_t *ds; 85fa9e4066Sahrens 86503ad85cSMatthew Ahrens if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 87fa9e4066Sahrens return (ds->ds_dir->dd_pool); 88fa9e4066Sahrens else 89503ad85cSMatthew Ahrens return (spa_get_dsl(os->os_spa)); 90fa9e4066Sahrens } 91fa9e4066Sahrens 92fa9e4066Sahrens dsl_dataset_t * 93fa9e4066Sahrens dmu_objset_ds(objset_t *os) 94fa9e4066Sahrens { 95503ad85cSMatthew Ahrens return (os->os_dsl_dataset); 96fa9e4066Sahrens } 97fa9e4066Sahrens 98fa9e4066Sahrens dmu_objset_type_t 99fa9e4066Sahrens dmu_objset_type(objset_t *os) 100fa9e4066Sahrens { 101503ad85cSMatthew Ahrens return (os->os_phys->os_type); 102fa9e4066Sahrens } 103fa9e4066Sahrens 104fa9e4066Sahrens void 105fa9e4066Sahrens dmu_objset_name(objset_t *os, char *buf) 106fa9e4066Sahrens { 107503ad85cSMatthew Ahrens dsl_dataset_name(os->os_dsl_dataset, buf); 108fa9e4066Sahrens } 109fa9e4066Sahrens 110fa9e4066Sahrens uint64_t 111fa9e4066Sahrens dmu_objset_id(objset_t *os) 112fa9e4066Sahrens { 113503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 114fa9e4066Sahrens 115fa9e4066Sahrens return (ds ? ds->ds_object : 0); 116fa9e4066Sahrens } 117fa9e4066Sahrens 118edf345e6SMatthew Ahrens zfs_sync_type_t 11955da60b9SMark J Musante dmu_objset_syncprop(objset_t *os) 12055da60b9SMark J Musante { 12155da60b9SMark J Musante return (os->os_sync); 12255da60b9SMark J Musante } 12355da60b9SMark J Musante 124edf345e6SMatthew Ahrens zfs_logbias_op_t 125e09fa4daSNeil Perrin dmu_objset_logbias(objset_t *os) 126e09fa4daSNeil Perrin { 127e09fa4daSNeil Perrin return (os->os_logbias); 128e09fa4daSNeil Perrin } 129e09fa4daSNeil Perrin 130fa9e4066Sahrens static void 131fa9e4066Sahrens checksum_changed_cb(void *arg, uint64_t newval) 132fa9e4066Sahrens { 133503ad85cSMatthew Ahrens objset_t *os = arg; 134fa9e4066Sahrens 135fa9e4066Sahrens /* 136fa9e4066Sahrens * Inheritance should have been done by now. 137fa9e4066Sahrens */ 138fa9e4066Sahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 139fa9e4066Sahrens 140503ad85cSMatthew Ahrens os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 141fa9e4066Sahrens } 142fa9e4066Sahrens 143fa9e4066Sahrens static void 144fa9e4066Sahrens compression_changed_cb(void *arg, uint64_t newval) 145fa9e4066Sahrens { 146503ad85cSMatthew Ahrens objset_t *os = arg; 147fa9e4066Sahrens 148fa9e4066Sahrens /* 149fa9e4066Sahrens * Inheritance and range checking should have been done by now. 150fa9e4066Sahrens */ 151fa9e4066Sahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 152fa9e4066Sahrens 153503ad85cSMatthew Ahrens os->os_compress = zio_compress_select(newval, ZIO_COMPRESS_ON_VALUE); 154fa9e4066Sahrens } 155fa9e4066Sahrens 156d0ad202dSahrens static void 157d0ad202dSahrens copies_changed_cb(void *arg, uint64_t newval) 158d0ad202dSahrens { 159503ad85cSMatthew Ahrens objset_t *os = arg; 160d0ad202dSahrens 161d0ad202dSahrens /* 162d0ad202dSahrens * Inheritance and range checking should have been done by now. 163d0ad202dSahrens */ 164d0ad202dSahrens ASSERT(newval > 0); 165503ad85cSMatthew Ahrens ASSERT(newval <= spa_max_replication(os->os_spa)); 166d0ad202dSahrens 167503ad85cSMatthew Ahrens os->os_copies = newval; 168d0ad202dSahrens } 169d0ad202dSahrens 170b24ab676SJeff Bonwick static void 171b24ab676SJeff Bonwick dedup_changed_cb(void *arg, uint64_t newval) 172b24ab676SJeff Bonwick { 173b24ab676SJeff Bonwick objset_t *os = arg; 174b24ab676SJeff Bonwick spa_t *spa = os->os_spa; 175b24ab676SJeff Bonwick enum zio_checksum checksum; 176b24ab676SJeff Bonwick 177b24ab676SJeff Bonwick /* 178b24ab676SJeff Bonwick * Inheritance should have been done by now. 179b24ab676SJeff Bonwick */ 180b24ab676SJeff Bonwick ASSERT(newval != ZIO_CHECKSUM_INHERIT); 181b24ab676SJeff Bonwick 182b24ab676SJeff Bonwick checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 183b24ab676SJeff Bonwick 184b24ab676SJeff Bonwick os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 185b24ab676SJeff Bonwick os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 186b24ab676SJeff Bonwick } 187b24ab676SJeff Bonwick 1883baa08fcSek static void 1893baa08fcSek primary_cache_changed_cb(void *arg, uint64_t newval) 1903baa08fcSek { 191503ad85cSMatthew Ahrens objset_t *os = arg; 1923baa08fcSek 1933baa08fcSek /* 1943baa08fcSek * Inheritance and range checking should have been done by now. 1953baa08fcSek */ 1963baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1973baa08fcSek newval == ZFS_CACHE_METADATA); 1983baa08fcSek 199503ad85cSMatthew Ahrens os->os_primary_cache = newval; 2003baa08fcSek } 2013baa08fcSek 2023baa08fcSek static void 2033baa08fcSek secondary_cache_changed_cb(void *arg, uint64_t newval) 2043baa08fcSek { 205503ad85cSMatthew Ahrens objset_t *os = arg; 2063baa08fcSek 2073baa08fcSek /* 2083baa08fcSek * Inheritance and range checking should have been done by now. 2093baa08fcSek */ 2103baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 2113baa08fcSek newval == ZFS_CACHE_METADATA); 2123baa08fcSek 213503ad85cSMatthew Ahrens os->os_secondary_cache = newval; 2143baa08fcSek } 2153baa08fcSek 21655da60b9SMark J Musante static void 21755da60b9SMark J Musante sync_changed_cb(void *arg, uint64_t newval) 21855da60b9SMark J Musante { 21955da60b9SMark J Musante objset_t *os = arg; 22055da60b9SMark J Musante 22155da60b9SMark J Musante /* 22255da60b9SMark J Musante * Inheritance and range checking should have been done by now. 22355da60b9SMark J Musante */ 22455da60b9SMark J Musante ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS || 22555da60b9SMark J Musante newval == ZFS_SYNC_DISABLED); 22655da60b9SMark J Musante 22755da60b9SMark J Musante os->os_sync = newval; 22855da60b9SMark J Musante if (os->os_zil) 22955da60b9SMark J Musante zil_set_sync(os->os_zil, newval); 23055da60b9SMark J Musante } 23155da60b9SMark J Musante 232edf345e6SMatthew Ahrens static void 233edf345e6SMatthew Ahrens redundant_metadata_changed_cb(void *arg, uint64_t newval) 234edf345e6SMatthew Ahrens { 235edf345e6SMatthew Ahrens objset_t *os = arg; 236edf345e6SMatthew Ahrens 237edf345e6SMatthew Ahrens /* 238edf345e6SMatthew Ahrens * Inheritance and range checking should have been done by now. 239edf345e6SMatthew Ahrens */ 240edf345e6SMatthew Ahrens ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL || 241edf345e6SMatthew Ahrens newval == ZFS_REDUNDANT_METADATA_MOST); 242edf345e6SMatthew Ahrens 243edf345e6SMatthew Ahrens os->os_redundant_metadata = newval; 244edf345e6SMatthew Ahrens } 245edf345e6SMatthew Ahrens 246e09fa4daSNeil Perrin static void 247e09fa4daSNeil Perrin logbias_changed_cb(void *arg, uint64_t newval) 248e09fa4daSNeil Perrin { 249e09fa4daSNeil Perrin objset_t *os = arg; 250e09fa4daSNeil Perrin 251e09fa4daSNeil Perrin ASSERT(newval == ZFS_LOGBIAS_LATENCY || 252e09fa4daSNeil Perrin newval == ZFS_LOGBIAS_THROUGHPUT); 253e09fa4daSNeil Perrin os->os_logbias = newval; 254e09fa4daSNeil Perrin if (os->os_zil) 255e09fa4daSNeil Perrin zil_set_logbias(os->os_zil, newval); 256e09fa4daSNeil Perrin } 257e09fa4daSNeil Perrin 258fa9e4066Sahrens void 259fa9e4066Sahrens dmu_objset_byteswap(void *buf, size_t size) 260fa9e4066Sahrens { 261fa9e4066Sahrens objset_phys_t *osp = buf; 262fa9e4066Sahrens 26314843421SMatthew Ahrens ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 264fa9e4066Sahrens dnode_byteswap(&osp->os_meta_dnode); 265fa9e4066Sahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 266fa9e4066Sahrens osp->os_type = BSWAP_64(osp->os_type); 26714843421SMatthew Ahrens osp->os_flags = BSWAP_64(osp->os_flags); 26814843421SMatthew Ahrens if (size == sizeof (objset_phys_t)) { 26914843421SMatthew Ahrens dnode_byteswap(&osp->os_userused_dnode); 27014843421SMatthew Ahrens dnode_byteswap(&osp->os_groupused_dnode); 27114843421SMatthew Ahrens } 272fa9e4066Sahrens } 273fa9e4066Sahrens 274ea8dc4b6Seschrock int 275ea8dc4b6Seschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 276503ad85cSMatthew Ahrens objset_t **osp) 277fa9e4066Sahrens { 278503ad85cSMatthew Ahrens objset_t *os; 279088f3894Sahrens int i, err; 280fa9e4066Sahrens 28191ebeef5Sahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 28291ebeef5Sahrens 283503ad85cSMatthew Ahrens os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 284503ad85cSMatthew Ahrens os->os_dsl_dataset = ds; 285503ad85cSMatthew Ahrens os->os_spa = spa; 286503ad85cSMatthew Ahrens os->os_rootbp = bp; 287503ad85cSMatthew Ahrens if (!BP_IS_HOLE(os->os_rootbp)) { 28813506d1eSmaybee uint32_t aflags = ARC_WAIT; 289ea8dc4b6Seschrock zbookmark_t zb; 290b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 291b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 292b24ab676SJeff Bonwick 293503ad85cSMatthew Ahrens if (DMU_OS_IS_L2CACHEABLE(os)) 2943baa08fcSek aflags |= ARC_L2CACHE; 295aad02571SSaso Kiselkov if (DMU_OS_IS_L2COMPRESSIBLE(os)) 296aad02571SSaso Kiselkov aflags |= ARC_L2COMPRESS; 297ea8dc4b6Seschrock 298503ad85cSMatthew Ahrens dprintf_bp(os->os_rootbp, "reading %s", ""); 2991b912ec7SGeorge Wilson err = arc_read(NULL, spa, os->os_rootbp, 300503ad85cSMatthew Ahrens arc_getbuf_func, &os->os_phys_buf, 30113506d1eSmaybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 3023b2aab18SMatthew Ahrens if (err != 0) { 303503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 304b87f3af3Sperrin /* convert checksum errors into IO errors */ 305b87f3af3Sperrin if (err == ECKSUM) 306be6fd75aSMatthew Ahrens err = SET_ERROR(EIO); 307ea8dc4b6Seschrock return (err); 308ea8dc4b6Seschrock } 30914843421SMatthew Ahrens 31014843421SMatthew Ahrens /* Increase the blocksize if we are permitted. */ 31114843421SMatthew Ahrens if (spa_version(spa) >= SPA_VERSION_USERSPACE && 312503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 31314843421SMatthew Ahrens arc_buf_t *buf = arc_buf_alloc(spa, 314503ad85cSMatthew Ahrens sizeof (objset_phys_t), &os->os_phys_buf, 31514843421SMatthew Ahrens ARC_BUFC_METADATA); 31614843421SMatthew Ahrens bzero(buf->b_data, sizeof (objset_phys_t)); 317503ad85cSMatthew Ahrens bcopy(os->os_phys_buf->b_data, buf->b_data, 318503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf)); 319503ad85cSMatthew Ahrens (void) arc_buf_remove_ref(os->os_phys_buf, 320503ad85cSMatthew Ahrens &os->os_phys_buf); 321503ad85cSMatthew Ahrens os->os_phys_buf = buf; 32214843421SMatthew Ahrens } 32314843421SMatthew Ahrens 324503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 325503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 326fa9e4066Sahrens } else { 32714843421SMatthew Ahrens int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 32814843421SMatthew Ahrens sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 329503ad85cSMatthew Ahrens os->os_phys_buf = arc_buf_alloc(spa, size, 330503ad85cSMatthew Ahrens &os->os_phys_buf, ARC_BUFC_METADATA); 331503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 332503ad85cSMatthew Ahrens bzero(os->os_phys, size); 333fa9e4066Sahrens } 334fa9e4066Sahrens 335fa9e4066Sahrens /* 336fa9e4066Sahrens * Note: the changed_cb will be called once before the register 337fa9e4066Sahrens * func returns, thus changing the checksum/compression from the 3383baa08fcSek * default (fletcher2/off). Snapshots don't need to know about 3393baa08fcSek * checksum/compression/copies. 340fa9e4066Sahrens */ 341*5d7b4d43SMatthew Ahrens if (ds != NULL) { 3423b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3433b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), 344503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 3453b2aab18SMatthew Ahrens if (err == 0) { 3463b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3473b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), 348503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 3493b2aab18SMatthew Ahrens } 3503baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 3513b2aab18SMatthew Ahrens if (err == 0) { 3523b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3533b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_CHECKSUM), 354503ad85cSMatthew Ahrens checksum_changed_cb, os); 3553b2aab18SMatthew Ahrens } 3563b2aab18SMatthew Ahrens if (err == 0) { 3573b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3583b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COMPRESSION), 359503ad85cSMatthew Ahrens compression_changed_cb, os); 3603b2aab18SMatthew Ahrens } 3613b2aab18SMatthew Ahrens if (err == 0) { 3623b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3633b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COPIES), 364503ad85cSMatthew Ahrens copies_changed_cb, os); 3653b2aab18SMatthew Ahrens } 3663b2aab18SMatthew Ahrens if (err == 0) { 3673b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3683b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_DEDUP), 369b24ab676SJeff Bonwick dedup_changed_cb, os); 3703b2aab18SMatthew Ahrens } 3713b2aab18SMatthew Ahrens if (err == 0) { 3723b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3733b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_LOGBIAS), 374e09fa4daSNeil Perrin logbias_changed_cb, os); 3753b2aab18SMatthew Ahrens } 3763b2aab18SMatthew Ahrens if (err == 0) { 3773b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3783b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SYNC), 37955da60b9SMark J Musante sync_changed_cb, os); 3803b2aab18SMatthew Ahrens } 381edf345e6SMatthew Ahrens if (err == 0) { 382edf345e6SMatthew Ahrens err = dsl_prop_register(ds, 383edf345e6SMatthew Ahrens zfs_prop_to_name( 384edf345e6SMatthew Ahrens ZFS_PROP_REDUNDANT_METADATA), 385edf345e6SMatthew Ahrens redundant_metadata_changed_cb, os); 386edf345e6SMatthew Ahrens } 3873baa08fcSek } 3883b2aab18SMatthew Ahrens if (err != 0) { 389503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 3903b2aab18SMatthew Ahrens &os->os_phys_buf)); 391503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 392ea8dc4b6Seschrock return (err); 393ea8dc4b6Seschrock } 394*5d7b4d43SMatthew Ahrens } else { 395fa9e4066Sahrens /* It's the meta-objset. */ 396503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 397503ad85cSMatthew Ahrens os->os_compress = ZIO_COMPRESS_LZJB; 398503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 399b24ab676SJeff Bonwick os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 400edf345e6SMatthew Ahrens os->os_dedup_verify = B_FALSE; 401edf345e6SMatthew Ahrens os->os_logbias = ZFS_LOGBIAS_LATENCY; 402edf345e6SMatthew Ahrens os->os_sync = ZFS_SYNC_STANDARD; 403503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 404503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 405fa9e4066Sahrens } 406fa9e4066Sahrens 4076e0cbcaaSMatthew Ahrens if (ds == NULL || !dsl_dataset_is_snapshot(ds)) 4086e0cbcaaSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 409503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 410fa9e4066Sahrens 411fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 412503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 413fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 414503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 415fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 416fa9e4066Sahrens } 417503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 418fa9e4066Sahrens offsetof(dnode_t, dn_link)); 419503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 420fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 421fa9e4066Sahrens 422503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 423503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 424503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 425503ad85cSMatthew Ahrens 426744947dcSTom Erickson DMU_META_DNODE(os) = dnode_special_open(os, 427744947dcSTom Erickson &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT, 428744947dcSTom Erickson &os->os_meta_dnode); 429503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 430744947dcSTom Erickson DMU_USERUSED_DNODE(os) = dnode_special_open(os, 431744947dcSTom Erickson &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT, 432744947dcSTom Erickson &os->os_userused_dnode); 433744947dcSTom Erickson DMU_GROUPUSED_DNODE(os) = dnode_special_open(os, 434744947dcSTom Erickson &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT, 435744947dcSTom Erickson &os->os_groupused_dnode); 43614843421SMatthew Ahrens } 437fa9e4066Sahrens 438503ad85cSMatthew Ahrens *osp = os; 439ea8dc4b6Seschrock return (0); 440fa9e4066Sahrens } 441fa9e4066Sahrens 442503ad85cSMatthew Ahrens int 443503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 4443cb34c60Sahrens { 445503ad85cSMatthew Ahrens int err = 0; 4463cb34c60Sahrens 4473cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 448*5d7b4d43SMatthew Ahrens if (ds->ds_objset == NULL) { 449*5d7b4d43SMatthew Ahrens objset_t *os; 4503cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 451*5d7b4d43SMatthew Ahrens ds, dsl_dataset_get_blkptr(ds), &os); 452*5d7b4d43SMatthew Ahrens 453*5d7b4d43SMatthew Ahrens if (err == 0) { 454*5d7b4d43SMatthew Ahrens mutex_enter(&ds->ds_lock); 455*5d7b4d43SMatthew Ahrens ASSERT(ds->ds_objset == NULL); 456*5d7b4d43SMatthew Ahrens ds->ds_objset = os; 457*5d7b4d43SMatthew Ahrens mutex_exit(&ds->ds_lock); 458*5d7b4d43SMatthew Ahrens } 4593cb34c60Sahrens } 460*5d7b4d43SMatthew Ahrens *osp = ds->ds_objset; 4613cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 462503ad85cSMatthew Ahrens return (err); 4633cb34c60Sahrens } 4643cb34c60Sahrens 4653b2aab18SMatthew Ahrens /* 4663b2aab18SMatthew Ahrens * Holds the pool while the objset is held. Therefore only one objset 4673b2aab18SMatthew Ahrens * can be held at a time. 4683b2aab18SMatthew Ahrens */ 4693cb34c60Sahrens int 470503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 4713cb34c60Sahrens { 4723b2aab18SMatthew Ahrens dsl_pool_t *dp; 473503ad85cSMatthew Ahrens dsl_dataset_t *ds; 4743cb34c60Sahrens int err; 4753cb34c60Sahrens 4763b2aab18SMatthew Ahrens err = dsl_pool_hold(name, tag, &dp); 4773b2aab18SMatthew Ahrens if (err != 0) 4783b2aab18SMatthew Ahrens return (err); 4793b2aab18SMatthew Ahrens err = dsl_dataset_hold(dp, name, tag, &ds); 4803b2aab18SMatthew Ahrens if (err != 0) { 4813b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 482503ad85cSMatthew Ahrens return (err); 4833b2aab18SMatthew Ahrens } 484503ad85cSMatthew Ahrens 485503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 4863b2aab18SMatthew Ahrens if (err != 0) { 487503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 4883b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 4893b2aab18SMatthew Ahrens } 490503ad85cSMatthew Ahrens 4913cb34c60Sahrens return (err); 4923cb34c60Sahrens } 4933cb34c60Sahrens 4943b2aab18SMatthew Ahrens /* 4953b2aab18SMatthew Ahrens * dsl_pool must not be held when this is called. 4963b2aab18SMatthew Ahrens * Upon successful return, there will be a longhold on the dataset, 4973b2aab18SMatthew Ahrens * and the dsl_pool will not be held. 4983b2aab18SMatthew Ahrens */ 499fa9e4066Sahrens int 500503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 501503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 502fa9e4066Sahrens { 5033b2aab18SMatthew Ahrens dsl_pool_t *dp; 504f18faf3fSek dsl_dataset_t *ds; 505f18faf3fSek int err; 506fa9e4066Sahrens 5073b2aab18SMatthew Ahrens err = dsl_pool_hold(name, FTAG, &dp); 5083b2aab18SMatthew Ahrens if (err != 0) 5093b2aab18SMatthew Ahrens return (err); 5103b2aab18SMatthew Ahrens err = dsl_dataset_own(dp, name, tag, &ds); 5113b2aab18SMatthew Ahrens if (err != 0) { 5123b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 513fa9e4066Sahrens return (err); 5143b2aab18SMatthew Ahrens } 515fa9e4066Sahrens 516503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 5173b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 5183b2aab18SMatthew Ahrens if (err != 0) { 519503ad85cSMatthew Ahrens dsl_dataset_disown(ds, tag); 520681d9761SEric Taylor } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 5213b2aab18SMatthew Ahrens dsl_dataset_disown(ds, tag); 522be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 523681d9761SEric Taylor } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 5243b2aab18SMatthew Ahrens dsl_dataset_disown(ds, tag); 525be6fd75aSMatthew Ahrens return (SET_ERROR(EROFS)); 526fa9e4066Sahrens } 5273cb34c60Sahrens return (err); 528fa9e4066Sahrens } 529fa9e4066Sahrens 530fa9e4066Sahrens void 531503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 532fa9e4066Sahrens { 5333b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_objset_pool(os); 534503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 5353b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 536503ad85cSMatthew Ahrens } 537503ad85cSMatthew Ahrens 53891948b51SKeith M Wesolowski /* 53991948b51SKeith M Wesolowski * When we are called, os MUST refer to an objset associated with a dataset 54091948b51SKeith M Wesolowski * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner 54191948b51SKeith M Wesolowski * == tag. We will then release and reacquire ownership of the dataset while 54291948b51SKeith M Wesolowski * holding the pool config_rwlock to avoid intervening namespace or ownership 54391948b51SKeith M Wesolowski * changes may occur. 54491948b51SKeith M Wesolowski * 54591948b51SKeith M Wesolowski * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to 54691948b51SKeith M Wesolowski * release the hold on its dataset and acquire a new one on the dataset of the 54791948b51SKeith M Wesolowski * same name so that it can be partially torn down and reconstructed. 54891948b51SKeith M Wesolowski */ 54991948b51SKeith M Wesolowski void 55091948b51SKeith M Wesolowski dmu_objset_refresh_ownership(objset_t *os, void *tag) 55191948b51SKeith M Wesolowski { 55291948b51SKeith M Wesolowski dsl_pool_t *dp; 55391948b51SKeith M Wesolowski dsl_dataset_t *ds, *newds; 55491948b51SKeith M Wesolowski char name[MAXNAMELEN]; 55591948b51SKeith M Wesolowski 55691948b51SKeith M Wesolowski ds = os->os_dsl_dataset; 55791948b51SKeith M Wesolowski VERIFY3P(ds, !=, NULL); 55891948b51SKeith M Wesolowski VERIFY3P(ds->ds_owner, ==, tag); 55991948b51SKeith M Wesolowski VERIFY(dsl_dataset_long_held(ds)); 56091948b51SKeith M Wesolowski 56191948b51SKeith M Wesolowski dsl_dataset_name(ds, name); 56291948b51SKeith M Wesolowski dp = dmu_objset_pool(os); 56391948b51SKeith M Wesolowski dsl_pool_config_enter(dp, FTAG); 56491948b51SKeith M Wesolowski dmu_objset_disown(os, tag); 56591948b51SKeith M Wesolowski VERIFY0(dsl_dataset_own(dp, name, tag, &newds)); 56691948b51SKeith M Wesolowski VERIFY3P(newds, ==, os->os_dsl_dataset); 56791948b51SKeith M Wesolowski dsl_pool_config_exit(dp, FTAG); 56891948b51SKeith M Wesolowski } 56991948b51SKeith M Wesolowski 570503ad85cSMatthew Ahrens void 571503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 572503ad85cSMatthew Ahrens { 573503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 574fa9e4066Sahrens } 575fa9e4066Sahrens 5763b2aab18SMatthew Ahrens void 5771934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 578ea8dc4b6Seschrock { 579ea8dc4b6Seschrock dnode_t *dn; 580c543ec06Sahrens 581503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 582c543ec06Sahrens 583c543ec06Sahrens /* process the mdn last, since the other dnodes have holds on it */ 584744947dcSTom Erickson list_remove(&os->os_dnodes, DMU_META_DNODE(os)); 585744947dcSTom Erickson list_insert_tail(&os->os_dnodes, DMU_META_DNODE(os)); 586ea8dc4b6Seschrock 587ea8dc4b6Seschrock /* 588c543ec06Sahrens * Find the first dnode with holds. We have to do this dance 589c543ec06Sahrens * because dnode_add_ref() only works if you already have a 590c543ec06Sahrens * hold. If there are no holds then it has no dbufs so OK to 591c543ec06Sahrens * skip. 592ea8dc4b6Seschrock */ 593503ad85cSMatthew Ahrens for (dn = list_head(&os->os_dnodes); 5941934e92fSmaybee dn && !dnode_add_ref(dn, FTAG); 595503ad85cSMatthew Ahrens dn = list_next(&os->os_dnodes, dn)) 596c543ec06Sahrens continue; 597c543ec06Sahrens 598c543ec06Sahrens while (dn) { 599c543ec06Sahrens dnode_t *next_dn = dn; 600c543ec06Sahrens 601c543ec06Sahrens do { 602503ad85cSMatthew Ahrens next_dn = list_next(&os->os_dnodes, next_dn); 6031934e92fSmaybee } while (next_dn && !dnode_add_ref(next_dn, FTAG)); 604c543ec06Sahrens 605503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 6061934e92fSmaybee dnode_evict_dbufs(dn); 607c543ec06Sahrens dnode_rele(dn, FTAG); 608503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 609c543ec06Sahrens dn = next_dn; 610ea8dc4b6Seschrock } 611503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 612ea8dc4b6Seschrock } 613ea8dc4b6Seschrock 614fa9e4066Sahrens void 615503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 616fa9e4066Sahrens { 617503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 618fa9e4066Sahrens 619b24ab676SJeff Bonwick for (int t = 0; t < TXG_SIZE; t++) 620b24ab676SJeff Bonwick ASSERT(!dmu_objset_is_dirty(os, t)); 621fa9e4066Sahrens 6223baa08fcSek if (ds) { 6233baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 6243b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6253b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_CHECKSUM), 626503ad85cSMatthew Ahrens checksum_changed_cb, os)); 6273b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6283b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COMPRESSION), 629503ad85cSMatthew Ahrens compression_changed_cb, os)); 6303b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6313b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COPIES), 632503ad85cSMatthew Ahrens copies_changed_cb, os)); 6333b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6343b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_DEDUP), 635b24ab676SJeff Bonwick dedup_changed_cb, os)); 6363b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6373b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_LOGBIAS), 638e09fa4daSNeil Perrin logbias_changed_cb, os)); 6393b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6403b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SYNC), 64155da60b9SMark J Musante sync_changed_cb, os)); 642edf345e6SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 643edf345e6SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_REDUNDANT_METADATA), 644edf345e6SMatthew Ahrens redundant_metadata_changed_cb, os)); 6453baa08fcSek } 6463b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6473b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), 648503ad85cSMatthew Ahrens primary_cache_changed_cb, os)); 6493b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6503b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), 651503ad85cSMatthew Ahrens secondary_cache_changed_cb, os)); 652fa9e4066Sahrens } 653fa9e4066Sahrens 6540a586ceaSMark Shellenbaum if (os->os_sa) 6550a586ceaSMark Shellenbaum sa_tear_down(os); 6560a586ceaSMark Shellenbaum 6573b2aab18SMatthew Ahrens dmu_objset_evict_dbufs(os); 658ea8dc4b6Seschrock 659744947dcSTom Erickson dnode_special_close(&os->os_meta_dnode); 660744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)) { 661744947dcSTom Erickson dnode_special_close(&os->os_userused_dnode); 662744947dcSTom Erickson dnode_special_close(&os->os_groupused_dnode); 66314843421SMatthew Ahrens } 664503ad85cSMatthew Ahrens zil_free(os->os_zil); 665fa9e4066Sahrens 666503ad85cSMatthew Ahrens ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 66714843421SMatthew Ahrens 6683b2aab18SMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf)); 669744947dcSTom Erickson 670744947dcSTom Erickson /* 671744947dcSTom Erickson * This is a barrier to prevent the objset from going away in 672744947dcSTom Erickson * dnode_move() until we can safely ensure that the objset is still in 673744947dcSTom Erickson * use. We consider the objset valid before the barrier and invalid 674744947dcSTom Erickson * after the barrier. 675744947dcSTom Erickson */ 676744947dcSTom Erickson rw_enter(&os_lock, RW_READER); 677744947dcSTom Erickson rw_exit(&os_lock); 678744947dcSTom Erickson 679503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 680503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 681503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 682503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 683fa9e4066Sahrens } 684fa9e4066Sahrens 68571eb0538SChris Kirby timestruc_t 68671eb0538SChris Kirby dmu_objset_snap_cmtime(objset_t *os) 68771eb0538SChris Kirby { 68871eb0538SChris Kirby return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 68971eb0538SChris Kirby } 69071eb0538SChris Kirby 691fa9e4066Sahrens /* called from dsl for meta-objset */ 692503ad85cSMatthew Ahrens objset_t * 693c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 694c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 695fa9e4066Sahrens { 696503ad85cSMatthew Ahrens objset_t *os; 697fa9e4066Sahrens dnode_t *mdn; 698fa9e4066Sahrens 699fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 7003b2aab18SMatthew Ahrens 701feaa74e4SMark Maybee if (ds != NULL) 7023b2aab18SMatthew Ahrens VERIFY0(dmu_objset_from_ds(ds, &os)); 703feaa74e4SMark Maybee else 7043b2aab18SMatthew Ahrens VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os)); 705feaa74e4SMark Maybee 706744947dcSTom Erickson mdn = DMU_META_DNODE(os); 707fa9e4066Sahrens 708fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 709fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 710fa9e4066Sahrens 711fa9e4066Sahrens /* 712fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 713fa9e4066Sahrens * later, because then we could do it in quescing context while 714fa9e4066Sahrens * we are also accessing it in open context. 715fa9e4066Sahrens * 716fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 717fa9e4066Sahrens * because the MOS is only updated in syncing context. 718fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 719fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 720fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 721fa9e4066Sahrens */ 722ea8dc4b6Seschrock if (ds != NULL) { 723ea8dc4b6Seschrock int levels = 1; 724ea8dc4b6Seschrock 725ea8dc4b6Seschrock /* 726ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 727ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 728ea8dc4b6Seschrock */ 729ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 730ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 731ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 732ea8dc4b6Seschrock levels++; 733ea8dc4b6Seschrock 734fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 735ea8dc4b6Seschrock mdn->dn_nlevels = levels; 736ea8dc4b6Seschrock } 737fa9e4066Sahrens 738fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 739fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 740fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 741503ad85cSMatthew Ahrens os->os_phys->os_type = type; 742503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 743503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 744503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 74514843421SMatthew Ahrens } 746fa9e4066Sahrens 747fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 748fa9e4066Sahrens 749503ad85cSMatthew Ahrens return (os); 750fa9e4066Sahrens } 751fa9e4066Sahrens 7523b2aab18SMatthew Ahrens typedef struct dmu_objset_create_arg { 7533b2aab18SMatthew Ahrens const char *doca_name; 7543b2aab18SMatthew Ahrens cred_t *doca_cred; 7553b2aab18SMatthew Ahrens void (*doca_userfunc)(objset_t *os, void *arg, 7563b2aab18SMatthew Ahrens cred_t *cr, dmu_tx_t *tx); 7573b2aab18SMatthew Ahrens void *doca_userarg; 7583b2aab18SMatthew Ahrens dmu_objset_type_t doca_type; 7593b2aab18SMatthew Ahrens uint64_t doca_flags; 7603b2aab18SMatthew Ahrens } dmu_objset_create_arg_t; 761fa9e4066Sahrens 762ecd6cf80Smarks /*ARGSUSED*/ 763fa9e4066Sahrens static int 7643b2aab18SMatthew Ahrens dmu_objset_create_check(void *arg, dmu_tx_t *tx) 765fa9e4066Sahrens { 7663b2aab18SMatthew Ahrens dmu_objset_create_arg_t *doca = arg; 7673b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 7683b2aab18SMatthew Ahrens dsl_dir_t *pdd; 7693b2aab18SMatthew Ahrens const char *tail; 7703b2aab18SMatthew Ahrens int error; 7711d452cf5Sahrens 7723b2aab18SMatthew Ahrens if (strchr(doca->doca_name, '@') != NULL) 773be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 7741d452cf5Sahrens 7753b2aab18SMatthew Ahrens error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail); 7763b2aab18SMatthew Ahrens if (error != 0) 7773b2aab18SMatthew Ahrens return (error); 7783b2aab18SMatthew Ahrens if (tail == NULL) { 7793b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 780be6fd75aSMatthew Ahrens return (SET_ERROR(EEXIST)); 7811d452cf5Sahrens } 782a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 783a2afb611SJerry Jelinek doca->doca_cred); 7843b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 785ecd6cf80Smarks 786a2afb611SJerry Jelinek return (error); 7871d452cf5Sahrens } 7881d452cf5Sahrens 7891d452cf5Sahrens static void 7903b2aab18SMatthew Ahrens dmu_objset_create_sync(void *arg, dmu_tx_t *tx) 7911d452cf5Sahrens { 7923b2aab18SMatthew Ahrens dmu_objset_create_arg_t *doca = arg; 7933b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 7943b2aab18SMatthew Ahrens dsl_dir_t *pdd; 7953b2aab18SMatthew Ahrens const char *tail; 7964445fffbSMatthew Ahrens dsl_dataset_t *ds; 7973b2aab18SMatthew Ahrens uint64_t obj; 7984445fffbSMatthew Ahrens blkptr_t *bp; 7993b2aab18SMatthew Ahrens objset_t *os; 800fa9e4066Sahrens 8013b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail)); 802fa9e4066Sahrens 8033b2aab18SMatthew Ahrens obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags, 8043b2aab18SMatthew Ahrens doca->doca_cred, tx); 805fa9e4066Sahrens 8063b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 8074445fffbSMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 8083b2aab18SMatthew Ahrens os = dmu_objset_create_impl(pdd->dd_pool->dp_spa, 8093b2aab18SMatthew Ahrens ds, bp, doca->doca_type, tx); 810fa9e4066Sahrens 8113b2aab18SMatthew Ahrens if (doca->doca_userfunc != NULL) { 8123b2aab18SMatthew Ahrens doca->doca_userfunc(os, doca->doca_userarg, 8133b2aab18SMatthew Ahrens doca->doca_cred, tx); 814fa9e4066Sahrens } 815ecd6cf80Smarks 8163b2aab18SMatthew Ahrens spa_history_log_internal_ds(ds, "create", tx, ""); 8174445fffbSMatthew Ahrens dsl_dataset_rele(ds, FTAG); 8183b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 819fa9e4066Sahrens } 820fa9e4066Sahrens 821fa9e4066Sahrens int 822ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 823ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 824fa9e4066Sahrens { 8253b2aab18SMatthew Ahrens dmu_objset_create_arg_t doca; 826fa9e4066Sahrens 8273b2aab18SMatthew Ahrens doca.doca_name = name; 8283b2aab18SMatthew Ahrens doca.doca_cred = CRED(); 8293b2aab18SMatthew Ahrens doca.doca_flags = flags; 8303b2aab18SMatthew Ahrens doca.doca_userfunc = func; 8313b2aab18SMatthew Ahrens doca.doca_userarg = arg; 8323b2aab18SMatthew Ahrens doca.doca_type = type; 833ecd6cf80Smarks 8343b2aab18SMatthew Ahrens return (dsl_sync_task(name, 8353b2aab18SMatthew Ahrens dmu_objset_create_check, dmu_objset_create_sync, &doca, 5)); 836ae46e4c7SMatthew Ahrens } 837ae46e4c7SMatthew Ahrens 8383b2aab18SMatthew Ahrens typedef struct dmu_objset_clone_arg { 8393b2aab18SMatthew Ahrens const char *doca_clone; 8403b2aab18SMatthew Ahrens const char *doca_origin; 8413b2aab18SMatthew Ahrens cred_t *doca_cred; 8423b2aab18SMatthew Ahrens } dmu_objset_clone_arg_t; 8433b2aab18SMatthew Ahrens 8443b2aab18SMatthew Ahrens /*ARGSUSED*/ 8453b2aab18SMatthew Ahrens static int 8463b2aab18SMatthew Ahrens dmu_objset_clone_check(void *arg, dmu_tx_t *tx) 847ae46e4c7SMatthew Ahrens { 8483b2aab18SMatthew Ahrens dmu_objset_clone_arg_t *doca = arg; 849ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 850ae46e4c7SMatthew Ahrens const char *tail; 8513b2aab18SMatthew Ahrens int error; 8523b2aab18SMatthew Ahrens dsl_dataset_t *origin; 8533b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 854ae46e4c7SMatthew Ahrens 8553b2aab18SMatthew Ahrens if (strchr(doca->doca_clone, '@') != NULL) 856be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 8573b2aab18SMatthew Ahrens 8583b2aab18SMatthew Ahrens error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail); 8593b2aab18SMatthew Ahrens if (error != 0) 8603b2aab18SMatthew Ahrens return (error); 861ae46e4c7SMatthew Ahrens if (tail == NULL) { 8623b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 863be6fd75aSMatthew Ahrens return (SET_ERROR(EEXIST)); 864fa9e4066Sahrens } 8653b2aab18SMatthew Ahrens /* You can't clone across pools. */ 8663b2aab18SMatthew Ahrens if (pdd->dd_pool != dp) { 8673b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 868be6fd75aSMatthew Ahrens return (SET_ERROR(EXDEV)); 869fa9e4066Sahrens } 870a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 871a2afb611SJerry Jelinek doca->doca_cred); 872a2afb611SJerry Jelinek if (error != 0) { 873a2afb611SJerry Jelinek dsl_dir_rele(pdd, FTAG); 874a2afb611SJerry Jelinek return (SET_ERROR(EDQUOT)); 875a2afb611SJerry Jelinek } 8763b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 877fa9e4066Sahrens 8783b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin); 8793b2aab18SMatthew Ahrens if (error != 0) 88099d5e173STim Haley return (error); 88199d5e173STim Haley 8823b2aab18SMatthew Ahrens /* You can't clone across pools. */ 8833b2aab18SMatthew Ahrens if (origin->ds_dir->dd_pool != dp) { 8843b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 885be6fd75aSMatthew Ahrens return (SET_ERROR(EXDEV)); 88699d5e173STim Haley } 887ea2f5b9eSMatthew Ahrens 8883b2aab18SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 8893b2aab18SMatthew Ahrens if (!dsl_dataset_is_snapshot(origin)) { 8903b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 891be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 89292241e0bSTom Erickson } 8933b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 89499d5e173STim Haley 8953b2aab18SMatthew Ahrens return (0); 896ea2f5b9eSMatthew Ahrens } 8971d452cf5Sahrens 8983b2aab18SMatthew Ahrens static void 8993b2aab18SMatthew Ahrens dmu_objset_clone_sync(void *arg, dmu_tx_t *tx) 9001d452cf5Sahrens { 9013b2aab18SMatthew Ahrens dmu_objset_clone_arg_t *doca = arg; 9023b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 9033b2aab18SMatthew Ahrens dsl_dir_t *pdd; 9043b2aab18SMatthew Ahrens const char *tail; 9053b2aab18SMatthew Ahrens dsl_dataset_t *origin, *ds; 9063b2aab18SMatthew Ahrens uint64_t obj; 9073b2aab18SMatthew Ahrens char namebuf[MAXNAMELEN]; 9084445fffbSMatthew Ahrens 9093b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail)); 9103b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin)); 9114445fffbSMatthew Ahrens 9123b2aab18SMatthew Ahrens obj = dsl_dataset_create_sync(pdd, tail, origin, 0, 9133b2aab18SMatthew Ahrens doca->doca_cred, tx); 914f2e10be3Srm 9153b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 9163b2aab18SMatthew Ahrens dsl_dataset_name(origin, namebuf); 9173b2aab18SMatthew Ahrens spa_history_log_internal_ds(ds, "clone", tx, 9183b2aab18SMatthew Ahrens "origin=%s (%llu)", namebuf, origin->ds_object); 9193b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9203b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 9213b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 9221d452cf5Sahrens } 9231d452cf5Sahrens 9241d452cf5Sahrens int 9253b2aab18SMatthew Ahrens dmu_objset_clone(const char *clone, const char *origin) 9261d452cf5Sahrens { 9273b2aab18SMatthew Ahrens dmu_objset_clone_arg_t doca; 9284445fffbSMatthew Ahrens 9293b2aab18SMatthew Ahrens doca.doca_clone = clone; 9303b2aab18SMatthew Ahrens doca.doca_origin = origin; 9313b2aab18SMatthew Ahrens doca.doca_cred = CRED(); 93299d5e173STim Haley 9333b2aab18SMatthew Ahrens return (dsl_sync_task(clone, 9343b2aab18SMatthew Ahrens dmu_objset_clone_check, dmu_objset_clone_sync, &doca, 5)); 9354445fffbSMatthew Ahrens } 9364445fffbSMatthew Ahrens 9374445fffbSMatthew Ahrens int 9384445fffbSMatthew Ahrens dmu_objset_snapshot_one(const char *fsname, const char *snapname) 9394445fffbSMatthew Ahrens { 9404445fffbSMatthew Ahrens int err; 9414445fffbSMatthew Ahrens char *longsnap = kmem_asprintf("%s@%s", fsname, snapname); 9424445fffbSMatthew Ahrens nvlist_t *snaps = fnvlist_alloc(); 9434445fffbSMatthew Ahrens 9444445fffbSMatthew Ahrens fnvlist_add_boolean(snaps, longsnap); 9454445fffbSMatthew Ahrens strfree(longsnap); 9463b2aab18SMatthew Ahrens err = dsl_dataset_snapshot(snaps, NULL, NULL); 9473b2aab18SMatthew Ahrens fnvlist_free(snaps); 9484445fffbSMatthew Ahrens return (err); 9494445fffbSMatthew Ahrens } 9504445fffbSMatthew Ahrens 951fa9e4066Sahrens static void 95214843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 953fa9e4066Sahrens { 954c717a561Smaybee dnode_t *dn; 955faafa6e3Sahrens 956c717a561Smaybee while (dn = list_head(list)) { 957c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 958c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 959c717a561Smaybee /* 96014843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 96114843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 962c717a561Smaybee */ 963c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 964c717a561Smaybee ASSERT(dn->dn_zio); 965faafa6e3Sahrens 966c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 967c717a561Smaybee list_remove(list, dn); 96814843421SMatthew Ahrens 96914843421SMatthew Ahrens if (newlist) { 97014843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 97114843421SMatthew Ahrens list_insert_tail(newlist, dn); 97214843421SMatthew Ahrens } 97314843421SMatthew Ahrens 974c717a561Smaybee dnode_sync(dn, tx); 975fa9e4066Sahrens } 976fa9e4066Sahrens } 977fa9e4066Sahrens 978fa9e4066Sahrens /* ARGSUSED */ 979fa9e4066Sahrens static void 980b24ab676SJeff Bonwick dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 981fa9e4066Sahrens { 982e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 983503ad85cSMatthew Ahrens objset_t *os = arg; 984c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 985fa9e4066Sahrens 986*5d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); 9873b2aab18SMatthew Ahrens ASSERT3P(bp, ==, os->os_rootbp); 9883b2aab18SMatthew Ahrens ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 9893b2aab18SMatthew Ahrens ASSERT0(BP_GET_LEVEL(bp)); 9900a4e9518Sgw 991fa9e4066Sahrens /* 99214843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 99314843421SMatthew Ahrens * allocated in the object set (not counting the "special" 99414843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 99514843421SMatthew Ahrens * dnode and user/group accounting objects). 996fa9e4066Sahrens */ 99714843421SMatthew Ahrens bp->blk_fill = 0; 998e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 999*5d7b4d43SMatthew Ahrens bp->blk_fill += BP_GET_FILL(&dnp->dn_blkptr[i]); 1000b24ab676SJeff Bonwick } 1001b24ab676SJeff Bonwick 1002b24ab676SJeff Bonwick /* ARGSUSED */ 1003b24ab676SJeff Bonwick static void 1004b24ab676SJeff Bonwick dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 1005b24ab676SJeff Bonwick { 1006b24ab676SJeff Bonwick blkptr_t *bp = zio->io_bp; 1007b24ab676SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 1008b24ab676SJeff Bonwick objset_t *os = arg; 10090a4e9518Sgw 1010e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 1011b24ab676SJeff Bonwick ASSERT(BP_EQUAL(bp, bp_orig)); 1012e14bb325SJeff Bonwick } else { 1013b24ab676SJeff Bonwick dsl_dataset_t *ds = os->os_dsl_dataset; 1014b24ab676SJeff Bonwick dmu_tx_t *tx = os->os_synctx; 1015b24ab676SJeff Bonwick 1016b24ab676SJeff Bonwick (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 1017b24ab676SJeff Bonwick dsl_dataset_block_born(ds, bp, tx); 10180a4e9518Sgw } 1019c717a561Smaybee } 1020c717a561Smaybee 1021fa9e4066Sahrens /* called from dsl */ 1022fa9e4066Sahrens void 1023503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 1024fa9e4066Sahrens { 1025fa9e4066Sahrens int txgoff; 1026ea8dc4b6Seschrock zbookmark_t zb; 1027b24ab676SJeff Bonwick zio_prop_t zp; 1028c717a561Smaybee zio_t *zio; 1029c717a561Smaybee list_t *list; 103014843421SMatthew Ahrens list_t *newlist = NULL; 1031c717a561Smaybee dbuf_dirty_record_t *dr; 1032c717a561Smaybee 1033c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 1034fa9e4066Sahrens 1035fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 1036fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 1037fa9e4066Sahrens os->os_synctx = tx; 1038fa9e4066Sahrens 103987bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 104087bd5c1eSahrens /* 104187bd5c1eSahrens * This is the MOS. If we have upgraded, 104287bd5c1eSahrens * spa_max_replication() could change, so reset 104387bd5c1eSahrens * os_copies here. 104487bd5c1eSahrens */ 104587bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 104687bd5c1eSahrens } 104787bd5c1eSahrens 1048fa9e4066Sahrens /* 1049c717a561Smaybee * Create the root block IO 1050fa9e4066Sahrens */ 1051b24ab676SJeff Bonwick SET_BOOKMARK(&zb, os->os_dsl_dataset ? 1052b24ab676SJeff Bonwick os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 1053b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 10541b912ec7SGeorge Wilson arc_release(os->os_phys_buf, &os->os_phys_buf); 1055b24ab676SJeff Bonwick 1056b24ab676SJeff Bonwick dmu_write_policy(os, NULL, 0, 0, &zp); 1057b24ab676SJeff Bonwick 1058b24ab676SJeff Bonwick zio = arc_write(pio, os->os_spa, tx->tx_txg, 1059aad02571SSaso Kiselkov os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), 1060aad02571SSaso Kiselkov DMU_OS_IS_L2COMPRESSIBLE(os), &zp, dmu_objset_write_ready, 106169962b56SMatthew Ahrens NULL, dmu_objset_write_done, os, ZIO_PRIORITY_ASYNC_WRITE, 1062aad02571SSaso Kiselkov ZIO_FLAG_MUSTSUCCEED, &zb); 1063c717a561Smaybee 1064c717a561Smaybee /* 106514843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 1066c717a561Smaybee */ 1067744947dcSTom Erickson DMU_META_DNODE(os)->dn_zio = zio; 1068744947dcSTom Erickson dnode_sync(DMU_META_DNODE(os), tx); 1069c717a561Smaybee 107014843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 107114843421SMatthew Ahrens 1072744947dcSTom Erickson if (DMU_USERUSED_DNODE(os) && 1073744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) { 1074744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_zio = zio; 1075744947dcSTom Erickson dnode_sync(DMU_USERUSED_DNODE(os), tx); 1076744947dcSTom Erickson DMU_GROUPUSED_DNODE(os)->dn_zio = zio; 1077744947dcSTom Erickson dnode_sync(DMU_GROUPUSED_DNODE(os), tx); 107814843421SMatthew Ahrens } 107914843421SMatthew Ahrens 1080c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 1081fa9e4066Sahrens 108214843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 108314843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 108414843421SMatthew Ahrens /* 108514843421SMatthew Ahrens * We must create the list here because it uses the 108614843421SMatthew Ahrens * dn_dirty_link[] of this txg. 108714843421SMatthew Ahrens */ 108814843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 108914843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 109014843421SMatthew Ahrens } 109114843421SMatthew Ahrens 109214843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 109314843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1094fa9e4066Sahrens 1095744947dcSTom Erickson list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff]; 1096c717a561Smaybee while (dr = list_head(list)) { 10973b2aab18SMatthew Ahrens ASSERT0(dr->dr_dbuf->db_level); 1098c717a561Smaybee list_remove(list, dr); 1099c717a561Smaybee if (dr->dr_zio) 1100c717a561Smaybee zio_nowait(dr->dr_zio); 1101c717a561Smaybee } 1102c717a561Smaybee /* 1103c717a561Smaybee * Free intent log blocks up to this tx. 1104c717a561Smaybee */ 1105c717a561Smaybee zil_sync(os->os_zil, tx); 1106088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 1107c717a561Smaybee zio_nowait(zio); 1108fa9e4066Sahrens } 1109fa9e4066Sahrens 1110b24ab676SJeff Bonwick boolean_t 1111b24ab676SJeff Bonwick dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1112b24ab676SJeff Bonwick { 1113b24ab676SJeff Bonwick return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1114b24ab676SJeff Bonwick !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1115b24ab676SJeff Bonwick } 1116b24ab676SJeff Bonwick 1117744947dcSTom Erickson static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 111814843421SMatthew Ahrens 111914843421SMatthew Ahrens void 112014843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 112114843421SMatthew Ahrens { 112214843421SMatthew Ahrens used_cbs[ost] = cb; 112314843421SMatthew Ahrens } 112414843421SMatthew Ahrens 112514843421SMatthew Ahrens boolean_t 1126503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 112714843421SMatthew Ahrens { 112814843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 1129744947dcSTom Erickson used_cbs[os->os_phys->os_type] != NULL && 1130744947dcSTom Erickson DMU_USERUSED_DNODE(os) != NULL); 113114843421SMatthew Ahrens } 113214843421SMatthew Ahrens 11339966ca11SMatthew Ahrens static void 11340a586ceaSMark Shellenbaum do_userquota_update(objset_t *os, uint64_t used, uint64_t flags, 11350a586ceaSMark Shellenbaum uint64_t user, uint64_t group, boolean_t subtract, dmu_tx_t *tx) 11369966ca11SMatthew Ahrens { 11370a586ceaSMark Shellenbaum if ((flags & DNODE_FLAG_USERUSED_ACCOUNTED)) { 11380a586ceaSMark Shellenbaum int64_t delta = DNODE_SIZE + used; 11399966ca11SMatthew Ahrens if (subtract) 11409966ca11SMatthew Ahrens delta = -delta; 1141b420f3adSRichard Lowe VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 11429966ca11SMatthew Ahrens user, delta, tx)); 1143b420f3adSRichard Lowe VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 11449966ca11SMatthew Ahrens group, delta, tx)); 11459966ca11SMatthew Ahrens } 11469966ca11SMatthew Ahrens } 11479966ca11SMatthew Ahrens 114814843421SMatthew Ahrens void 11490a586ceaSMark Shellenbaum dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx) 115014843421SMatthew Ahrens { 115114843421SMatthew Ahrens dnode_t *dn; 115214843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 115314843421SMatthew Ahrens 115414843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 115514843421SMatthew Ahrens 115614843421SMatthew Ahrens while (dn = list_head(list)) { 11571d8ccc7bSMark Shellenbaum int flags; 115814843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 115914843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 116014843421SMatthew Ahrens dn->dn_phys->dn_flags & 116114843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 116214843421SMatthew Ahrens 116314843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 1164744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) { 1165503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 116614843421SMatthew Ahrens DMU_USERUSED_OBJECT, 116714843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1168503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 116914843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 117014843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 117114843421SMatthew Ahrens } 117214843421SMatthew Ahrens 117314843421SMatthew Ahrens /* 11749966ca11SMatthew Ahrens * We intentionally modify the zap object even if the 11750a586ceaSMark Shellenbaum * net delta is zero. Otherwise 11769966ca11SMatthew Ahrens * the block of the zap obj could be shared between 11779966ca11SMatthew Ahrens * datasets but need to be different between them after 11789966ca11SMatthew Ahrens * a bprewrite. 117914843421SMatthew Ahrens */ 118014843421SMatthew Ahrens 11811d8ccc7bSMark Shellenbaum flags = dn->dn_id_flags; 11821d8ccc7bSMark Shellenbaum ASSERT(flags); 11831d8ccc7bSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 11840a586ceaSMark Shellenbaum do_userquota_update(os, dn->dn_oldused, dn->dn_oldflags, 11850a586ceaSMark Shellenbaum dn->dn_olduid, dn->dn_oldgid, B_TRUE, tx); 11860a586ceaSMark Shellenbaum } 11871d8ccc7bSMark Shellenbaum if (flags & DN_ID_NEW_EXIST) { 11880a586ceaSMark Shellenbaum do_userquota_update(os, DN_USED_BYTES(dn->dn_phys), 11890a586ceaSMark Shellenbaum dn->dn_phys->dn_flags, dn->dn_newuid, 11900a586ceaSMark Shellenbaum dn->dn_newgid, B_FALSE, tx); 11910a586ceaSMark Shellenbaum } 11920a586ceaSMark Shellenbaum 11931d8ccc7bSMark Shellenbaum mutex_enter(&dn->dn_mtx); 11940a586ceaSMark Shellenbaum dn->dn_oldused = 0; 11950a586ceaSMark Shellenbaum dn->dn_oldflags = 0; 11960a586ceaSMark Shellenbaum if (dn->dn_id_flags & DN_ID_NEW_EXIST) { 11970a586ceaSMark Shellenbaum dn->dn_olduid = dn->dn_newuid; 11980a586ceaSMark Shellenbaum dn->dn_oldgid = dn->dn_newgid; 11990a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 12000a586ceaSMark Shellenbaum if (dn->dn_bonuslen == 0) 12010a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 12020a586ceaSMark Shellenbaum else 12030a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 12040a586ceaSMark Shellenbaum } 120528d97a71SMark Shellenbaum dn->dn_id_flags &= ~(DN_ID_NEW_EXIST); 120614843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 120714843421SMatthew Ahrens 120814843421SMatthew Ahrens list_remove(list, dn); 120914843421SMatthew Ahrens dnode_rele(dn, list); 121014843421SMatthew Ahrens } 121114843421SMatthew Ahrens } 121214843421SMatthew Ahrens 121306e0070dSMark Shellenbaum /* 121406e0070dSMark Shellenbaum * Returns a pointer to data to find uid/gid from 121506e0070dSMark Shellenbaum * 121606e0070dSMark Shellenbaum * If a dirty record for transaction group that is syncing can't 121706e0070dSMark Shellenbaum * be found then NULL is returned. In the NULL case it is assumed 121806e0070dSMark Shellenbaum * the uid/gid aren't changing. 121906e0070dSMark Shellenbaum */ 122006e0070dSMark Shellenbaum static void * 122106e0070dSMark Shellenbaum dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx) 122206e0070dSMark Shellenbaum { 122306e0070dSMark Shellenbaum dbuf_dirty_record_t *dr, **drp; 122406e0070dSMark Shellenbaum void *data; 122506e0070dSMark Shellenbaum 122606e0070dSMark Shellenbaum if (db->db_dirtycnt == 0) 122706e0070dSMark Shellenbaum return (db->db.db_data); /* Nothing is changing */ 122806e0070dSMark Shellenbaum 122906e0070dSMark Shellenbaum for (drp = &db->db_last_dirty; (dr = *drp) != NULL; drp = &dr->dr_next) 123006e0070dSMark Shellenbaum if (dr->dr_txg == tx->tx_txg) 123106e0070dSMark Shellenbaum break; 123206e0070dSMark Shellenbaum 1233744947dcSTom Erickson if (dr == NULL) { 123406e0070dSMark Shellenbaum data = NULL; 1235744947dcSTom Erickson } else { 1236744947dcSTom Erickson dnode_t *dn; 1237744947dcSTom Erickson 1238744947dcSTom Erickson DB_DNODE_ENTER(dr->dr_dbuf); 1239744947dcSTom Erickson dn = DB_DNODE(dr->dr_dbuf); 1240744947dcSTom Erickson 1241744947dcSTom Erickson if (dn->dn_bonuslen == 0 && 1242744947dcSTom Erickson dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID) 1243744947dcSTom Erickson data = dr->dt.dl.dr_data->b_data; 1244744947dcSTom Erickson else 1245744947dcSTom Erickson data = dr->dt.dl.dr_data; 1246744947dcSTom Erickson 1247744947dcSTom Erickson DB_DNODE_EXIT(dr->dr_dbuf); 1248744947dcSTom Erickson } 1249744947dcSTom Erickson 125006e0070dSMark Shellenbaum return (data); 125106e0070dSMark Shellenbaum } 125206e0070dSMark Shellenbaum 12530a586ceaSMark Shellenbaum void 125406e0070dSMark Shellenbaum dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx) 12550a586ceaSMark Shellenbaum { 12560a586ceaSMark Shellenbaum objset_t *os = dn->dn_objset; 12570a586ceaSMark Shellenbaum void *data = NULL; 125806e0070dSMark Shellenbaum dmu_buf_impl_t *db = NULL; 1259d5285caeSGeorge Wilson uint64_t *user = NULL; 1260d5285caeSGeorge Wilson uint64_t *group = NULL; 12610a586ceaSMark Shellenbaum int flags = dn->dn_id_flags; 12620a586ceaSMark Shellenbaum int error; 126306e0070dSMark Shellenbaum boolean_t have_spill = B_FALSE; 12640a586ceaSMark Shellenbaum 12650a586ceaSMark Shellenbaum if (!dmu_objset_userused_enabled(dn->dn_objset)) 12660a586ceaSMark Shellenbaum return; 12670a586ceaSMark Shellenbaum 12680a586ceaSMark Shellenbaum if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST| 12690a586ceaSMark Shellenbaum DN_ID_CHKED_SPILL))) 12700a586ceaSMark Shellenbaum return; 12710a586ceaSMark Shellenbaum 12720a586ceaSMark Shellenbaum if (before && dn->dn_bonuslen != 0) 12730a586ceaSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 127406e0070dSMark Shellenbaum else if (!before && dn->dn_bonuslen != 0) { 127506e0070dSMark Shellenbaum if (dn->dn_bonus) { 127606e0070dSMark Shellenbaum db = dn->dn_bonus; 127706e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 127806e0070dSMark Shellenbaum data = dmu_objset_userquota_find_data(db, tx); 127906e0070dSMark Shellenbaum } else { 128006e0070dSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 128106e0070dSMark Shellenbaum } 128206e0070dSMark Shellenbaum } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) { 12830a586ceaSMark Shellenbaum int rf = 0; 12840a586ceaSMark Shellenbaum 12850a586ceaSMark Shellenbaum if (RW_WRITE_HELD(&dn->dn_struct_rwlock)) 12860a586ceaSMark Shellenbaum rf |= DB_RF_HAVESTRUCT; 12871d8ccc7bSMark Shellenbaum error = dmu_spill_hold_by_dnode(dn, 12881d8ccc7bSMark Shellenbaum rf | DB_RF_MUST_SUCCEED, 128906e0070dSMark Shellenbaum FTAG, (dmu_buf_t **)&db); 12900a586ceaSMark Shellenbaum ASSERT(error == 0); 129106e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 129206e0070dSMark Shellenbaum data = (before) ? db->db.db_data : 129306e0070dSMark Shellenbaum dmu_objset_userquota_find_data(db, tx); 129406e0070dSMark Shellenbaum have_spill = B_TRUE; 12950a586ceaSMark Shellenbaum } else { 12960a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 12970a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 12980a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 12990a586ceaSMark Shellenbaum return; 13000a586ceaSMark Shellenbaum } 13010a586ceaSMark Shellenbaum 13020a586ceaSMark Shellenbaum if (before) { 130306e0070dSMark Shellenbaum ASSERT(data); 13040a586ceaSMark Shellenbaum user = &dn->dn_olduid; 13050a586ceaSMark Shellenbaum group = &dn->dn_oldgid; 130606e0070dSMark Shellenbaum } else if (data) { 13070a586ceaSMark Shellenbaum user = &dn->dn_newuid; 13080a586ceaSMark Shellenbaum group = &dn->dn_newgid; 13090a586ceaSMark Shellenbaum } 13100a586ceaSMark Shellenbaum 131106e0070dSMark Shellenbaum /* 131206e0070dSMark Shellenbaum * Must always call the callback in case the object 131306e0070dSMark Shellenbaum * type has changed and that type isn't an object type to track 131406e0070dSMark Shellenbaum */ 13150a586ceaSMark Shellenbaum error = used_cbs[os->os_phys->os_type](dn->dn_bonustype, data, 13160a586ceaSMark Shellenbaum user, group); 13170a586ceaSMark Shellenbaum 131806e0070dSMark Shellenbaum /* 131906e0070dSMark Shellenbaum * Preserve existing uid/gid when the callback can't determine 132006e0070dSMark Shellenbaum * what the new uid/gid are and the callback returned EEXIST. 132106e0070dSMark Shellenbaum * The EEXIST error tells us to just use the existing uid/gid. 132206e0070dSMark Shellenbaum * If we don't know what the old values are then just assign 132306e0070dSMark Shellenbaum * them to 0, since that is a new file being created. 132406e0070dSMark Shellenbaum */ 132506e0070dSMark Shellenbaum if (!before && data == NULL && error == EEXIST) { 132606e0070dSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 132706e0070dSMark Shellenbaum dn->dn_newuid = dn->dn_olduid; 132806e0070dSMark Shellenbaum dn->dn_newgid = dn->dn_oldgid; 132906e0070dSMark Shellenbaum } else { 133006e0070dSMark Shellenbaum dn->dn_newuid = 0; 133106e0070dSMark Shellenbaum dn->dn_newgid = 0; 133206e0070dSMark Shellenbaum } 133306e0070dSMark Shellenbaum error = 0; 133406e0070dSMark Shellenbaum } 133506e0070dSMark Shellenbaum 133606e0070dSMark Shellenbaum if (db) 133706e0070dSMark Shellenbaum mutex_exit(&db->db_mtx); 133806e0070dSMark Shellenbaum 13390a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 13400a586ceaSMark Shellenbaum if (error == 0 && before) 13410a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 13420a586ceaSMark Shellenbaum if (error == 0 && !before) 13430a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_NEW_EXIST; 13440a586ceaSMark Shellenbaum 134506e0070dSMark Shellenbaum if (have_spill) { 13460a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 13470a586ceaSMark Shellenbaum } else { 13480a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 13490a586ceaSMark Shellenbaum } 13500a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 135106e0070dSMark Shellenbaum if (have_spill) 135206e0070dSMark Shellenbaum dmu_buf_rele((dmu_buf_t *)db, FTAG); 13530a586ceaSMark Shellenbaum } 13540a586ceaSMark Shellenbaum 135514843421SMatthew Ahrens boolean_t 135614843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 135714843421SMatthew Ahrens { 1358503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 135914843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 136014843421SMatthew Ahrens } 136114843421SMatthew Ahrens 136214843421SMatthew Ahrens int 136314843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 136414843421SMatthew Ahrens { 136514843421SMatthew Ahrens uint64_t obj; 136614843421SMatthew Ahrens int err = 0; 136714843421SMatthew Ahrens 136814843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 136914843421SMatthew Ahrens return (0); 1370503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 1371be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 137214843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 1373be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 137414843421SMatthew Ahrens 137514843421SMatthew Ahrens /* 137614843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 137714843421SMatthew Ahrens * synced out and now accounted. If this is called 137814843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 137914843421SMatthew Ahrens * that's fine, since we track each object's accounted state 138014843421SMatthew Ahrens * independently. 138114843421SMatthew Ahrens */ 138214843421SMatthew Ahrens 138314843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 138468857716SLin Ling dmu_tx_t *tx; 138514843421SMatthew Ahrens dmu_buf_t *db; 138614843421SMatthew Ahrens int objerr; 138714843421SMatthew Ahrens 138814843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 1389be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 139014843421SMatthew Ahrens 139114843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 13923b2aab18SMatthew Ahrens if (objerr != 0) 139314843421SMatthew Ahrens continue; 139468857716SLin Ling tx = dmu_tx_create(os); 139514843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 139614843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 13973b2aab18SMatthew Ahrens if (objerr != 0) { 139814843421SMatthew Ahrens dmu_tx_abort(tx); 139914843421SMatthew Ahrens continue; 140014843421SMatthew Ahrens } 140114843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 140214843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 140314843421SMatthew Ahrens dmu_tx_commit(tx); 140414843421SMatthew Ahrens } 140514843421SMatthew Ahrens 1406503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 140714843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 140814843421SMatthew Ahrens return (0); 140914843421SMatthew Ahrens } 141014843421SMatthew Ahrens 1411fa9e4066Sahrens void 1412a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1413a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1414fa9e4066Sahrens { 1415503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1416a2eea2e1Sahrens usedobjsp, availobjsp); 1417a2eea2e1Sahrens } 1418a2eea2e1Sahrens 1419a2eea2e1Sahrens uint64_t 1420a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1421a2eea2e1Sahrens { 1422503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1423a2eea2e1Sahrens } 1424a2eea2e1Sahrens 1425a2eea2e1Sahrens void 1426a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1427a2eea2e1Sahrens { 1428503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1429503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1430503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1431a2eea2e1Sahrens } 1432a2eea2e1Sahrens 1433a2eea2e1Sahrens void 1434a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1435a2eea2e1Sahrens { 1436503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1437503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1438a2eea2e1Sahrens 1439503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1440503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1441a2eea2e1Sahrens 1442a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1443503ad85cSMatthew Ahrens os->os_phys->os_type); 144414843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 144514843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1446fa9e4066Sahrens } 1447fa9e4066Sahrens 1448fa9e4066Sahrens int 1449fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1450fa9e4066Sahrens { 1451503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1452503ad85cSMatthew Ahrens return (dsl_dataset_is_snapshot(os->os_dsl_dataset)); 1453fa9e4066Sahrens else 1454fa9e4066Sahrens return (B_FALSE); 1455fa9e4066Sahrens } 1456fa9e4066Sahrens 1457ab04eb8eStimh int 1458ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1459ab04eb8eStimh boolean_t *conflict) 1460ab04eb8eStimh { 1461503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1462ab04eb8eStimh uint64_t ignored; 1463ab04eb8eStimh 1464ab04eb8eStimh if (ds->ds_phys->ds_snapnames_zapobj == 0) 1465be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1466ab04eb8eStimh 1467ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1468ab04eb8eStimh ds->ds_phys->ds_snapnames_zapobj, name, 8, 1, &ignored, MT_FIRST, 1469ab04eb8eStimh real, maxlen, conflict)); 1470ab04eb8eStimh } 1471ab04eb8eStimh 1472fa9e4066Sahrens int 1473fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1474b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1475fa9e4066Sahrens { 1476503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1477fa9e4066Sahrens zap_cursor_t cursor; 1478fa9e4066Sahrens zap_attribute_t attr; 1479fa9e4066Sahrens 14803b2aab18SMatthew Ahrens ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); 14813b2aab18SMatthew Ahrens 1482fa9e4066Sahrens if (ds->ds_phys->ds_snapnames_zapobj == 0) 1483be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1484fa9e4066Sahrens 1485fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1486fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1487fa9e4066Sahrens ds->ds_phys->ds_snapnames_zapobj, *offp); 1488fa9e4066Sahrens 148987e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 149087e5029aSahrens zap_cursor_fini(&cursor); 1491be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 149287e5029aSahrens } 149387e5029aSahrens 149487e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 149587e5029aSahrens zap_cursor_fini(&cursor); 1496be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 149787e5029aSahrens } 149887e5029aSahrens 149987e5029aSahrens (void) strcpy(name, attr.za_name); 150087e5029aSahrens if (idp) 150187e5029aSahrens *idp = attr.za_first_integer; 1502b38f0970Sck if (case_conflict) 1503b38f0970Sck *case_conflict = attr.za_normalization_conflict; 150487e5029aSahrens zap_cursor_advance(&cursor); 150587e5029aSahrens *offp = zap_cursor_serialize(&cursor); 150687e5029aSahrens zap_cursor_fini(&cursor); 150787e5029aSahrens 150887e5029aSahrens return (0); 150987e5029aSahrens } 151087e5029aSahrens 151187e5029aSahrens int 151287e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 151387e5029aSahrens uint64_t *idp, uint64_t *offp) 151487e5029aSahrens { 1515503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 151687e5029aSahrens zap_cursor_t cursor; 151787e5029aSahrens zap_attribute_t attr; 151887e5029aSahrens 151987e5029aSahrens /* there is no next dir on a snapshot! */ 1520503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 152187e5029aSahrens dd->dd_phys->dd_head_dataset_obj) 1522be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1523fa9e4066Sahrens 152487e5029aSahrens zap_cursor_init_serialized(&cursor, 152587e5029aSahrens dd->dd_pool->dp_meta_objset, 152687e5029aSahrens dd->dd_phys->dd_child_dir_zapobj, *offp); 152787e5029aSahrens 152887e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 152987e5029aSahrens zap_cursor_fini(&cursor); 1530be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 153187e5029aSahrens } 153287e5029aSahrens 153387e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 153487e5029aSahrens zap_cursor_fini(&cursor); 1535be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 153687e5029aSahrens } 1537fa9e4066Sahrens 1538fa9e4066Sahrens (void) strcpy(name, attr.za_name); 153987e5029aSahrens if (idp) 154087e5029aSahrens *idp = attr.za_first_integer; 1541fa9e4066Sahrens zap_cursor_advance(&cursor); 1542fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 154387e5029aSahrens zap_cursor_fini(&cursor); 1544fa9e4066Sahrens 1545fa9e4066Sahrens return (0); 1546fa9e4066Sahrens } 1547fa9e4066Sahrens 1548fa9e4066Sahrens /* 15493b2aab18SMatthew Ahrens * Find objsets under and including ddobj, call func(ds) on each. 1550fa9e4066Sahrens */ 15511d452cf5Sahrens int 15523b2aab18SMatthew Ahrens dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj, 15533b2aab18SMatthew Ahrens int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags) 1554088f3894Sahrens { 15553b2aab18SMatthew Ahrens dsl_dir_t *dd; 15563b2aab18SMatthew Ahrens dsl_dataset_t *ds; 15573b2aab18SMatthew Ahrens zap_cursor_t zc; 15583b2aab18SMatthew Ahrens zap_attribute_t *attr; 15593b2aab18SMatthew Ahrens uint64_t thisobj; 15603b2aab18SMatthew Ahrens int err; 15613b2aab18SMatthew Ahrens 15623b2aab18SMatthew Ahrens ASSERT(dsl_pool_config_held(dp)); 15633b2aab18SMatthew Ahrens 15643b2aab18SMatthew Ahrens err = dsl_dir_hold_obj(dp, ddobj, NULL, FTAG, &dd); 15653b2aab18SMatthew Ahrens if (err != 0) 15663b2aab18SMatthew Ahrens return (err); 15673b2aab18SMatthew Ahrens 15683b2aab18SMatthew Ahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 15693b2aab18SMatthew Ahrens if (dd->dd_myname[0] == '$') { 15703b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 15713b2aab18SMatthew Ahrens return (0); 15723b2aab18SMatthew Ahrens } 15733b2aab18SMatthew Ahrens 15743b2aab18SMatthew Ahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 15753b2aab18SMatthew Ahrens attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 15763b2aab18SMatthew Ahrens 15773b2aab18SMatthew Ahrens /* 15783b2aab18SMatthew Ahrens * Iterate over all children. 15793b2aab18SMatthew Ahrens */ 15803b2aab18SMatthew Ahrens if (flags & DS_FIND_CHILDREN) { 15813b2aab18SMatthew Ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 15823b2aab18SMatthew Ahrens dd->dd_phys->dd_child_dir_zapobj); 15833b2aab18SMatthew Ahrens zap_cursor_retrieve(&zc, attr) == 0; 15843b2aab18SMatthew Ahrens (void) zap_cursor_advance(&zc)) { 15853b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 15863b2aab18SMatthew Ahrens sizeof (uint64_t)); 15873b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 15883b2aab18SMatthew Ahrens 15893b2aab18SMatthew Ahrens err = dmu_objset_find_dp(dp, attr->za_first_integer, 15903b2aab18SMatthew Ahrens func, arg, flags); 15913b2aab18SMatthew Ahrens if (err != 0) 15923b2aab18SMatthew Ahrens break; 15933b2aab18SMatthew Ahrens } 15943b2aab18SMatthew Ahrens zap_cursor_fini(&zc); 15953b2aab18SMatthew Ahrens 15963b2aab18SMatthew Ahrens if (err != 0) { 15973b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 15983b2aab18SMatthew Ahrens kmem_free(attr, sizeof (zap_attribute_t)); 15993b2aab18SMatthew Ahrens return (err); 16003b2aab18SMatthew Ahrens } 16013b2aab18SMatthew Ahrens } 16023b2aab18SMatthew Ahrens 16033b2aab18SMatthew Ahrens /* 16043b2aab18SMatthew Ahrens * Iterate over all snapshots. 16053b2aab18SMatthew Ahrens */ 16063b2aab18SMatthew Ahrens if (flags & DS_FIND_SNAPSHOTS) { 16073b2aab18SMatthew Ahrens dsl_dataset_t *ds; 16083b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 16093b2aab18SMatthew Ahrens 16103b2aab18SMatthew Ahrens if (err == 0) { 16113b2aab18SMatthew Ahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 16123b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 16133b2aab18SMatthew Ahrens 16143b2aab18SMatthew Ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 16153b2aab18SMatthew Ahrens zap_cursor_retrieve(&zc, attr) == 0; 16163b2aab18SMatthew Ahrens (void) zap_cursor_advance(&zc)) { 16173b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 16183b2aab18SMatthew Ahrens sizeof (uint64_t)); 16193b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 16203b2aab18SMatthew Ahrens 16213b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, 16223b2aab18SMatthew Ahrens attr->za_first_integer, FTAG, &ds); 16233b2aab18SMatthew Ahrens if (err != 0) 16243b2aab18SMatthew Ahrens break; 16253b2aab18SMatthew Ahrens err = func(dp, ds, arg); 16263b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 16273b2aab18SMatthew Ahrens if (err != 0) 16283b2aab18SMatthew Ahrens break; 16293b2aab18SMatthew Ahrens } 16303b2aab18SMatthew Ahrens zap_cursor_fini(&zc); 16313b2aab18SMatthew Ahrens } 16323b2aab18SMatthew Ahrens } 16333b2aab18SMatthew Ahrens 16343b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 16353b2aab18SMatthew Ahrens kmem_free(attr, sizeof (zap_attribute_t)); 16363b2aab18SMatthew Ahrens 16373b2aab18SMatthew Ahrens if (err != 0) 16383b2aab18SMatthew Ahrens return (err); 16393b2aab18SMatthew Ahrens 16403b2aab18SMatthew Ahrens /* 16413b2aab18SMatthew Ahrens * Apply to self. 16423b2aab18SMatthew Ahrens */ 16433b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 16443b2aab18SMatthew Ahrens if (err != 0) 16453b2aab18SMatthew Ahrens return (err); 16463b2aab18SMatthew Ahrens err = func(dp, ds, arg); 16473b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 16483b2aab18SMatthew Ahrens return (err); 1649088f3894Sahrens } 1650088f3894Sahrens 1651088f3894Sahrens /* 16523b2aab18SMatthew Ahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 16533b2aab18SMatthew Ahrens * The dp_config_rwlock must not be held when this is called, and it 16543b2aab18SMatthew Ahrens * will not be held when the callback is called. 16553b2aab18SMatthew Ahrens * Therefore this function should only be used when the pool is not changing 16563b2aab18SMatthew Ahrens * (e.g. in syncing context), or the callback can deal with the possible races. 1657088f3894Sahrens */ 16583b2aab18SMatthew Ahrens static int 16593b2aab18SMatthew Ahrens dmu_objset_find_impl(spa_t *spa, const char *name, 16603b2aab18SMatthew Ahrens int func(const char *, void *), void *arg, int flags) 1661fa9e4066Sahrens { 1662fa9e4066Sahrens dsl_dir_t *dd; 16633b2aab18SMatthew Ahrens dsl_pool_t *dp = spa_get_dsl(spa); 1664088f3894Sahrens dsl_dataset_t *ds; 1665fa9e4066Sahrens zap_cursor_t zc; 1666b7661cccSmmusante zap_attribute_t *attr; 1667fa9e4066Sahrens char *child; 1668088f3894Sahrens uint64_t thisobj; 1669088f3894Sahrens int err; 1670fa9e4066Sahrens 16713b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 16723b2aab18SMatthew Ahrens 16733b2aab18SMatthew Ahrens err = dsl_dir_hold(dp, name, FTAG, &dd, NULL); 16743b2aab18SMatthew Ahrens if (err != 0) { 16753b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 16761d452cf5Sahrens return (err); 16773b2aab18SMatthew Ahrens } 1678fa9e4066Sahrens 1679088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1680088f3894Sahrens if (dd->dd_myname[0] == '$') { 16813b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 16823b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1683088f3894Sahrens return (0); 1684088f3894Sahrens } 1685088f3894Sahrens 1686088f3894Sahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 1687b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1688fa9e4066Sahrens 1689fa9e4066Sahrens /* 1690fa9e4066Sahrens * Iterate over all children. 1691fa9e4066Sahrens */ 16920b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1693088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 16940b69c2f0Sahrens dd->dd_phys->dd_child_dir_zapobj); 1695b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 16960b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 16973b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 16983b2aab18SMatthew Ahrens sizeof (uint64_t)); 16993b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 1700fa9e4066Sahrens 1701486ae710SMatthew Ahrens child = kmem_asprintf("%s/%s", name, attr->za_name); 17023b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 17033b2aab18SMatthew Ahrens err = dmu_objset_find_impl(spa, child, 17043b2aab18SMatthew Ahrens func, arg, flags); 17053b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 1706486ae710SMatthew Ahrens strfree(child); 17073b2aab18SMatthew Ahrens if (err != 0) 17080b69c2f0Sahrens break; 17090b69c2f0Sahrens } 17100b69c2f0Sahrens zap_cursor_fini(&zc); 17111d452cf5Sahrens 17123b2aab18SMatthew Ahrens if (err != 0) { 17133b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 17143b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1715b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 17160b69c2f0Sahrens return (err); 17170b69c2f0Sahrens } 1718fa9e4066Sahrens } 1719fa9e4066Sahrens 1720fa9e4066Sahrens /* 1721fa9e4066Sahrens * Iterate over all snapshots. 1722fa9e4066Sahrens */ 1723088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1724088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1725088f3894Sahrens 1726088f3894Sahrens if (err == 0) { 1727088f3894Sahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 1728088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1729088f3894Sahrens 1730088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1731088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1732088f3894Sahrens (void) zap_cursor_advance(&zc)) { 17333b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 1734088f3894Sahrens sizeof (uint64_t)); 17353b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 1736088f3894Sahrens 1737486ae710SMatthew Ahrens child = kmem_asprintf("%s@%s", 1738486ae710SMatthew Ahrens name, attr->za_name); 17393b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 17403b2aab18SMatthew Ahrens err = func(child, arg); 17413b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 1742486ae710SMatthew Ahrens strfree(child); 17433b2aab18SMatthew Ahrens if (err != 0) 1744088f3894Sahrens break; 1745088f3894Sahrens } 1746088f3894Sahrens zap_cursor_fini(&zc); 1747fa9e4066Sahrens } 1748fa9e4066Sahrens } 1749fa9e4066Sahrens 17503b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 1751b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 17523b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1753fa9e4066Sahrens 17543b2aab18SMatthew Ahrens if (err != 0) 17551d452cf5Sahrens return (err); 17561d452cf5Sahrens 17573b2aab18SMatthew Ahrens /* Apply to self. */ 17583b2aab18SMatthew Ahrens return (func(name, arg)); 1759fa9e4066Sahrens } 1760f18faf3fSek 17613b2aab18SMatthew Ahrens /* 17623b2aab18SMatthew Ahrens * See comment above dmu_objset_find_impl(). 17633b2aab18SMatthew Ahrens */ 17647f73c863SRich Morris int 17653b2aab18SMatthew Ahrens dmu_objset_find(char *name, int func(const char *, void *), void *arg, 17663b2aab18SMatthew Ahrens int flags) 17677f73c863SRich Morris { 17683b2aab18SMatthew Ahrens spa_t *spa; 17693b2aab18SMatthew Ahrens int error; 17707f73c863SRich Morris 17713b2aab18SMatthew Ahrens error = spa_open(name, &spa, FTAG); 17723b2aab18SMatthew Ahrens if (error != 0) 17733b2aab18SMatthew Ahrens return (error); 17743b2aab18SMatthew Ahrens error = dmu_objset_find_impl(spa, name, func, arg, flags); 17753b2aab18SMatthew Ahrens spa_close(spa, FTAG); 17763b2aab18SMatthew Ahrens return (error); 17777f73c863SRich Morris } 17787f73c863SRich Morris 1779f18faf3fSek void 1780f18faf3fSek dmu_objset_set_user(objset_t *os, void *user_ptr) 1781f18faf3fSek { 1782503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1783503ad85cSMatthew Ahrens os->os_user_ptr = user_ptr; 1784f18faf3fSek } 1785f18faf3fSek 1786f18faf3fSek void * 1787f18faf3fSek dmu_objset_get_user(objset_t *os) 1788f18faf3fSek { 1789503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1790503ad85cSMatthew Ahrens return (os->os_user_ptr); 1791f18faf3fSek } 17923b2aab18SMatthew Ahrens 17933b2aab18SMatthew Ahrens /* 17943b2aab18SMatthew Ahrens * Determine name of filesystem, given name of snapshot. 17953b2aab18SMatthew Ahrens * buf must be at least MAXNAMELEN bytes 17963b2aab18SMatthew Ahrens */ 17973b2aab18SMatthew Ahrens int 17983b2aab18SMatthew Ahrens dmu_fsname(const char *snapname, char *buf) 17993b2aab18SMatthew Ahrens { 18003b2aab18SMatthew Ahrens char *atp = strchr(snapname, '@'); 18013b2aab18SMatthew Ahrens if (atp == NULL) 1802be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 18033b2aab18SMatthew Ahrens if (atp - snapname >= MAXNAMELEN) 1804be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 18053b2aab18SMatthew Ahrens (void) strlcpy(buf, snapname, atp - snapname + 1); 18063b2aab18SMatthew Ahrens return (0); 18073b2aab18SMatthew Ahrens } 1808