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 /* 22ea2f5b9eSMatthew Ahrens * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26ecd6cf80Smarks #include <sys/cred.h> 27fa9e4066Sahrens #include <sys/zfs_context.h> 28fa9e4066Sahrens #include <sys/dmu_objset.h> 29fa9e4066Sahrens #include <sys/dsl_dir.h> 30fa9e4066Sahrens #include <sys/dsl_dataset.h> 31fa9e4066Sahrens #include <sys/dsl_prop.h> 32fa9e4066Sahrens #include <sys/dsl_pool.h> 331d452cf5Sahrens #include <sys/dsl_synctask.h> 34ecd6cf80Smarks #include <sys/dsl_deleg.h> 35fa9e4066Sahrens #include <sys/dnode.h> 36fa9e4066Sahrens #include <sys/dbuf.h> 37a2eea2e1Sahrens #include <sys/zvol.h> 38fa9e4066Sahrens #include <sys/dmu_tx.h> 39fa9e4066Sahrens #include <sys/zio_checksum.h> 40fa9e4066Sahrens #include <sys/zap.h> 41fa9e4066Sahrens #include <sys/zil.h> 42fa9e4066Sahrens #include <sys/dmu_impl.h> 43ecd6cf80Smarks #include <sys/zfs_ioctl.h> 44fa9e4066Sahrens 45fa9e4066Sahrens spa_t * 46fa9e4066Sahrens dmu_objset_spa(objset_t *os) 47fa9e4066Sahrens { 48503ad85cSMatthew Ahrens return (os->os_spa); 49fa9e4066Sahrens } 50fa9e4066Sahrens 51fa9e4066Sahrens zilog_t * 52fa9e4066Sahrens dmu_objset_zil(objset_t *os) 53fa9e4066Sahrens { 54503ad85cSMatthew Ahrens return (os->os_zil); 55fa9e4066Sahrens } 56fa9e4066Sahrens 57fa9e4066Sahrens dsl_pool_t * 58fa9e4066Sahrens dmu_objset_pool(objset_t *os) 59fa9e4066Sahrens { 60fa9e4066Sahrens dsl_dataset_t *ds; 61fa9e4066Sahrens 62503ad85cSMatthew Ahrens if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 63fa9e4066Sahrens return (ds->ds_dir->dd_pool); 64fa9e4066Sahrens else 65503ad85cSMatthew Ahrens return (spa_get_dsl(os->os_spa)); 66fa9e4066Sahrens } 67fa9e4066Sahrens 68fa9e4066Sahrens dsl_dataset_t * 69fa9e4066Sahrens dmu_objset_ds(objset_t *os) 70fa9e4066Sahrens { 71503ad85cSMatthew Ahrens return (os->os_dsl_dataset); 72fa9e4066Sahrens } 73fa9e4066Sahrens 74fa9e4066Sahrens dmu_objset_type_t 75fa9e4066Sahrens dmu_objset_type(objset_t *os) 76fa9e4066Sahrens { 77503ad85cSMatthew Ahrens return (os->os_phys->os_type); 78fa9e4066Sahrens } 79fa9e4066Sahrens 80fa9e4066Sahrens void 81fa9e4066Sahrens dmu_objset_name(objset_t *os, char *buf) 82fa9e4066Sahrens { 83503ad85cSMatthew Ahrens dsl_dataset_name(os->os_dsl_dataset, buf); 84fa9e4066Sahrens } 85fa9e4066Sahrens 86fa9e4066Sahrens uint64_t 87fa9e4066Sahrens dmu_objset_id(objset_t *os) 88fa9e4066Sahrens { 89503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 90fa9e4066Sahrens 91fa9e4066Sahrens return (ds ? ds->ds_object : 0); 92fa9e4066Sahrens } 93fa9e4066Sahrens 94*e09fa4daSNeil Perrin uint64_t 95*e09fa4daSNeil Perrin dmu_objset_logbias(objset_t *os) 96*e09fa4daSNeil Perrin { 97*e09fa4daSNeil Perrin return (os->os_logbias); 98*e09fa4daSNeil Perrin } 99*e09fa4daSNeil Perrin 100fa9e4066Sahrens static void 101fa9e4066Sahrens checksum_changed_cb(void *arg, uint64_t newval) 102fa9e4066Sahrens { 103503ad85cSMatthew Ahrens objset_t *os = arg; 104fa9e4066Sahrens 105fa9e4066Sahrens /* 106fa9e4066Sahrens * Inheritance should have been done by now. 107fa9e4066Sahrens */ 108fa9e4066Sahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 109fa9e4066Sahrens 110503ad85cSMatthew Ahrens os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 111fa9e4066Sahrens } 112fa9e4066Sahrens 113fa9e4066Sahrens static void 114fa9e4066Sahrens compression_changed_cb(void *arg, uint64_t newval) 115fa9e4066Sahrens { 116503ad85cSMatthew Ahrens objset_t *os = arg; 117fa9e4066Sahrens 118fa9e4066Sahrens /* 119fa9e4066Sahrens * Inheritance and range checking should have been done by now. 120fa9e4066Sahrens */ 121fa9e4066Sahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 122fa9e4066Sahrens 123503ad85cSMatthew Ahrens os->os_compress = zio_compress_select(newval, ZIO_COMPRESS_ON_VALUE); 124fa9e4066Sahrens } 125fa9e4066Sahrens 126d0ad202dSahrens static void 127d0ad202dSahrens copies_changed_cb(void *arg, uint64_t newval) 128d0ad202dSahrens { 129503ad85cSMatthew Ahrens objset_t *os = arg; 130d0ad202dSahrens 131d0ad202dSahrens /* 132d0ad202dSahrens * Inheritance and range checking should have been done by now. 133d0ad202dSahrens */ 134d0ad202dSahrens ASSERT(newval > 0); 135503ad85cSMatthew Ahrens ASSERT(newval <= spa_max_replication(os->os_spa)); 136d0ad202dSahrens 137503ad85cSMatthew Ahrens os->os_copies = newval; 138d0ad202dSahrens } 139d0ad202dSahrens 1403baa08fcSek static void 1413baa08fcSek primary_cache_changed_cb(void *arg, uint64_t newval) 1423baa08fcSek { 143503ad85cSMatthew Ahrens objset_t *os = arg; 1443baa08fcSek 1453baa08fcSek /* 1463baa08fcSek * Inheritance and range checking should have been done by now. 1473baa08fcSek */ 1483baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1493baa08fcSek newval == ZFS_CACHE_METADATA); 1503baa08fcSek 151503ad85cSMatthew Ahrens os->os_primary_cache = newval; 1523baa08fcSek } 1533baa08fcSek 1543baa08fcSek static void 1553baa08fcSek secondary_cache_changed_cb(void *arg, uint64_t newval) 1563baa08fcSek { 157503ad85cSMatthew Ahrens objset_t *os = arg; 1583baa08fcSek 1593baa08fcSek /* 1603baa08fcSek * Inheritance and range checking should have been done by now. 1613baa08fcSek */ 1623baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1633baa08fcSek newval == ZFS_CACHE_METADATA); 1643baa08fcSek 165503ad85cSMatthew Ahrens os->os_secondary_cache = newval; 1663baa08fcSek } 1673baa08fcSek 168*e09fa4daSNeil Perrin static void 169*e09fa4daSNeil Perrin logbias_changed_cb(void *arg, uint64_t newval) 170*e09fa4daSNeil Perrin { 171*e09fa4daSNeil Perrin objset_t *os = arg; 172*e09fa4daSNeil Perrin 173*e09fa4daSNeil Perrin ASSERT(newval == ZFS_LOGBIAS_LATENCY || 174*e09fa4daSNeil Perrin newval == ZFS_LOGBIAS_THROUGHPUT); 175*e09fa4daSNeil Perrin os->os_logbias = newval; 176*e09fa4daSNeil Perrin if (os->os_zil) 177*e09fa4daSNeil Perrin zil_set_logbias(os->os_zil, newval); 178*e09fa4daSNeil Perrin } 179*e09fa4daSNeil Perrin 180fa9e4066Sahrens void 181fa9e4066Sahrens dmu_objset_byteswap(void *buf, size_t size) 182fa9e4066Sahrens { 183fa9e4066Sahrens objset_phys_t *osp = buf; 184fa9e4066Sahrens 18514843421SMatthew Ahrens ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 186fa9e4066Sahrens dnode_byteswap(&osp->os_meta_dnode); 187fa9e4066Sahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 188fa9e4066Sahrens osp->os_type = BSWAP_64(osp->os_type); 18914843421SMatthew Ahrens osp->os_flags = BSWAP_64(osp->os_flags); 19014843421SMatthew Ahrens if (size == sizeof (objset_phys_t)) { 19114843421SMatthew Ahrens dnode_byteswap(&osp->os_userused_dnode); 19214843421SMatthew Ahrens dnode_byteswap(&osp->os_groupused_dnode); 19314843421SMatthew Ahrens } 194fa9e4066Sahrens } 195fa9e4066Sahrens 196ea8dc4b6Seschrock int 197ea8dc4b6Seschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 198503ad85cSMatthew Ahrens objset_t **osp) 199fa9e4066Sahrens { 200503ad85cSMatthew Ahrens objset_t *os; 201088f3894Sahrens int i, err; 202fa9e4066Sahrens 20391ebeef5Sahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 20491ebeef5Sahrens 205503ad85cSMatthew Ahrens os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 206503ad85cSMatthew Ahrens os->os_dsl_dataset = ds; 207503ad85cSMatthew Ahrens os->os_spa = spa; 208503ad85cSMatthew Ahrens os->os_rootbp = bp; 209503ad85cSMatthew Ahrens if (!BP_IS_HOLE(os->os_rootbp)) { 21013506d1eSmaybee uint32_t aflags = ARC_WAIT; 211ea8dc4b6Seschrock zbookmark_t zb; 212ea8dc4b6Seschrock zb.zb_objset = ds ? ds->ds_object : 0; 213ea8dc4b6Seschrock zb.zb_object = 0; 214ea8dc4b6Seschrock zb.zb_level = -1; 215ea8dc4b6Seschrock zb.zb_blkid = 0; 216503ad85cSMatthew Ahrens if (DMU_OS_IS_L2CACHEABLE(os)) 2173baa08fcSek aflags |= ARC_L2CACHE; 218ea8dc4b6Seschrock 219503ad85cSMatthew Ahrens dprintf_bp(os->os_rootbp, "reading %s", ""); 220088f3894Sahrens /* 221088f3894Sahrens * NB: when bprewrite scrub can change the bp, 222088f3894Sahrens * and this is called from dmu_objset_open_ds_os, the bp 223088f3894Sahrens * could change, and we'll need a lock. 224088f3894Sahrens */ 225503ad85cSMatthew Ahrens err = arc_read_nolock(NULL, spa, os->os_rootbp, 226503ad85cSMatthew Ahrens arc_getbuf_func, &os->os_phys_buf, 22713506d1eSmaybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 228ea8dc4b6Seschrock if (err) { 229503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 230b87f3af3Sperrin /* convert checksum errors into IO errors */ 231b87f3af3Sperrin if (err == ECKSUM) 232b87f3af3Sperrin err = EIO; 233ea8dc4b6Seschrock return (err); 234ea8dc4b6Seschrock } 23514843421SMatthew Ahrens 23614843421SMatthew Ahrens /* Increase the blocksize if we are permitted. */ 23714843421SMatthew Ahrens if (spa_version(spa) >= SPA_VERSION_USERSPACE && 238503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 23914843421SMatthew Ahrens arc_buf_t *buf = arc_buf_alloc(spa, 240503ad85cSMatthew Ahrens sizeof (objset_phys_t), &os->os_phys_buf, 24114843421SMatthew Ahrens ARC_BUFC_METADATA); 24214843421SMatthew Ahrens bzero(buf->b_data, sizeof (objset_phys_t)); 243503ad85cSMatthew Ahrens bcopy(os->os_phys_buf->b_data, buf->b_data, 244503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf)); 245503ad85cSMatthew Ahrens (void) arc_buf_remove_ref(os->os_phys_buf, 246503ad85cSMatthew Ahrens &os->os_phys_buf); 247503ad85cSMatthew Ahrens os->os_phys_buf = buf; 24814843421SMatthew Ahrens } 24914843421SMatthew Ahrens 250503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 251503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 252fa9e4066Sahrens } else { 25314843421SMatthew Ahrens int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 25414843421SMatthew Ahrens sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 255503ad85cSMatthew Ahrens os->os_phys_buf = arc_buf_alloc(spa, size, 256503ad85cSMatthew Ahrens &os->os_phys_buf, ARC_BUFC_METADATA); 257503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 258503ad85cSMatthew Ahrens bzero(os->os_phys, size); 259fa9e4066Sahrens } 260fa9e4066Sahrens 261fa9e4066Sahrens /* 262fa9e4066Sahrens * Note: the changed_cb will be called once before the register 263fa9e4066Sahrens * func returns, thus changing the checksum/compression from the 2643baa08fcSek * default (fletcher2/off). Snapshots don't need to know about 2653baa08fcSek * checksum/compression/copies. 266fa9e4066Sahrens */ 2673baa08fcSek if (ds) { 2683baa08fcSek err = dsl_prop_register(ds, "primarycache", 269503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 270d0ad202dSahrens if (err == 0) 2713baa08fcSek err = dsl_prop_register(ds, "secondarycache", 272503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 2733baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 2743baa08fcSek if (err == 0) 2753baa08fcSek err = dsl_prop_register(ds, "checksum", 276503ad85cSMatthew Ahrens checksum_changed_cb, os); 2773baa08fcSek if (err == 0) 2783baa08fcSek err = dsl_prop_register(ds, "compression", 279503ad85cSMatthew Ahrens compression_changed_cb, os); 2803baa08fcSek if (err == 0) 2813baa08fcSek err = dsl_prop_register(ds, "copies", 282503ad85cSMatthew Ahrens copies_changed_cb, os); 283*e09fa4daSNeil Perrin if (err == 0) 284*e09fa4daSNeil Perrin err = dsl_prop_register(ds, "logbias", 285*e09fa4daSNeil Perrin logbias_changed_cb, os); 2863baa08fcSek } 287ea8dc4b6Seschrock if (err) { 288503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 289503ad85cSMatthew Ahrens &os->os_phys_buf) == 1); 290503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 291ea8dc4b6Seschrock return (err); 292ea8dc4b6Seschrock } 29399653d4eSeschrock } else if (ds == NULL) { 294fa9e4066Sahrens /* It's the meta-objset. */ 295503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 296503ad85cSMatthew Ahrens os->os_compress = ZIO_COMPRESS_LZJB; 297503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 298503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 299503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 300fa9e4066Sahrens } 301fa9e4066Sahrens 302503ad85cSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 303503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 304fa9e4066Sahrens 305fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 306503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 307fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 308503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 309fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 310fa9e4066Sahrens } 311503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 312fa9e4066Sahrens offsetof(dnode_t, dn_link)); 313503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 314fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 315fa9e4066Sahrens 316503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 317503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 318503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 319503ad85cSMatthew Ahrens 320503ad85cSMatthew Ahrens os->os_meta_dnode = dnode_special_open(os, 321503ad85cSMatthew Ahrens &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT); 322503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 323503ad85cSMatthew Ahrens os->os_userused_dnode = dnode_special_open(os, 324503ad85cSMatthew Ahrens &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT); 325503ad85cSMatthew Ahrens os->os_groupused_dnode = dnode_special_open(os, 326503ad85cSMatthew Ahrens &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT); 32714843421SMatthew Ahrens } 328fa9e4066Sahrens 32991ebeef5Sahrens /* 33091ebeef5Sahrens * We should be the only thread trying to do this because we 33191ebeef5Sahrens * have ds_opening_lock 33291ebeef5Sahrens */ 33391ebeef5Sahrens if (ds) { 334503ad85cSMatthew Ahrens mutex_enter(&ds->ds_lock); 335503ad85cSMatthew Ahrens ASSERT(ds->ds_objset == NULL); 336503ad85cSMatthew Ahrens ds->ds_objset = os; 337503ad85cSMatthew Ahrens mutex_exit(&ds->ds_lock); 338fa9e4066Sahrens } 339fa9e4066Sahrens 340503ad85cSMatthew Ahrens *osp = os; 341ea8dc4b6Seschrock return (0); 342fa9e4066Sahrens } 343fa9e4066Sahrens 344503ad85cSMatthew Ahrens int 345503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 3463cb34c60Sahrens { 347503ad85cSMatthew Ahrens int err = 0; 3483cb34c60Sahrens 3493cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 350503ad85cSMatthew Ahrens *osp = ds->ds_objset; 351503ad85cSMatthew Ahrens if (*osp == NULL) { 3523cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 353503ad85cSMatthew Ahrens ds, &ds->ds_phys->ds_bp, osp); 3543cb34c60Sahrens } 3553cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 356503ad85cSMatthew Ahrens return (err); 3573cb34c60Sahrens } 3583cb34c60Sahrens 359503ad85cSMatthew Ahrens /* called from zpl */ 3603cb34c60Sahrens int 361503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 3623cb34c60Sahrens { 363503ad85cSMatthew Ahrens dsl_dataset_t *ds; 3643cb34c60Sahrens int err; 3653cb34c60Sahrens 366503ad85cSMatthew Ahrens err = dsl_dataset_hold(name, tag, &ds); 3673cb34c60Sahrens if (err) 368503ad85cSMatthew Ahrens return (err); 369503ad85cSMatthew Ahrens 370503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 371503ad85cSMatthew Ahrens if (err) 372503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 373503ad85cSMatthew Ahrens 3743cb34c60Sahrens return (err); 3753cb34c60Sahrens } 3763cb34c60Sahrens 377fa9e4066Sahrens /* called from zpl */ 378fa9e4066Sahrens int 379503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 380503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 381fa9e4066Sahrens { 382f18faf3fSek dsl_dataset_t *ds; 383f18faf3fSek int err; 384fa9e4066Sahrens 385503ad85cSMatthew Ahrens err = dsl_dataset_own(name, B_FALSE, tag, &ds); 386503ad85cSMatthew Ahrens if (err) 387fa9e4066Sahrens return (err); 388fa9e4066Sahrens 389503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 3903cb34c60Sahrens if (err) { 391503ad85cSMatthew Ahrens dsl_dataset_disown(ds, tag); 392503ad85cSMatthew Ahrens } else if ((type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) || 393503ad85cSMatthew Ahrens (!readonly && dsl_dataset_is_snapshot(ds))) { 394503ad85cSMatthew Ahrens dmu_objset_disown(*osp, tag); 395503ad85cSMatthew Ahrens return (EINVAL); 396fa9e4066Sahrens } 397503ad85cSMatthew Ahrens 3983cb34c60Sahrens return (err); 399fa9e4066Sahrens } 400fa9e4066Sahrens 401fa9e4066Sahrens void 402503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 403fa9e4066Sahrens { 404503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 405503ad85cSMatthew Ahrens } 406503ad85cSMatthew Ahrens 407503ad85cSMatthew Ahrens void 408503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 409503ad85cSMatthew Ahrens { 410503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 411fa9e4066Sahrens } 412fa9e4066Sahrens 413436b2950Sperrin int 4141934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 415ea8dc4b6Seschrock { 416ea8dc4b6Seschrock dnode_t *dn; 417c543ec06Sahrens 418503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 419c543ec06Sahrens 420c543ec06Sahrens /* process the mdn last, since the other dnodes have holds on it */ 421503ad85cSMatthew Ahrens list_remove(&os->os_dnodes, os->os_meta_dnode); 422503ad85cSMatthew Ahrens list_insert_tail(&os->os_dnodes, os->os_meta_dnode); 423ea8dc4b6Seschrock 424ea8dc4b6Seschrock /* 425c543ec06Sahrens * Find the first dnode with holds. We have to do this dance 426c543ec06Sahrens * because dnode_add_ref() only works if you already have a 427c543ec06Sahrens * hold. If there are no holds then it has no dbufs so OK to 428c543ec06Sahrens * skip. 429ea8dc4b6Seschrock */ 430503ad85cSMatthew Ahrens for (dn = list_head(&os->os_dnodes); 4311934e92fSmaybee dn && !dnode_add_ref(dn, FTAG); 432503ad85cSMatthew Ahrens dn = list_next(&os->os_dnodes, dn)) 433c543ec06Sahrens continue; 434c543ec06Sahrens 435c543ec06Sahrens while (dn) { 436c543ec06Sahrens dnode_t *next_dn = dn; 437c543ec06Sahrens 438c543ec06Sahrens do { 439503ad85cSMatthew Ahrens next_dn = list_next(&os->os_dnodes, next_dn); 4401934e92fSmaybee } while (next_dn && !dnode_add_ref(next_dn, FTAG)); 441c543ec06Sahrens 442503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 4431934e92fSmaybee dnode_evict_dbufs(dn); 444c543ec06Sahrens dnode_rele(dn, FTAG); 445503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 446c543ec06Sahrens dn = next_dn; 447ea8dc4b6Seschrock } 448503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 449503ad85cSMatthew Ahrens return (list_head(&os->os_dnodes) != os->os_meta_dnode); 450ea8dc4b6Seschrock } 451ea8dc4b6Seschrock 452fa9e4066Sahrens void 453503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 454fa9e4066Sahrens { 455503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 45699653d4eSeschrock int i; 457fa9e4066Sahrens 458fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 459503ad85cSMatthew Ahrens ASSERT(list_head(&os->os_dirty_dnodes[i]) == NULL); 460503ad85cSMatthew Ahrens ASSERT(list_head(&os->os_free_dnodes[i]) == NULL); 461fa9e4066Sahrens } 462fa9e4066Sahrens 4633baa08fcSek if (ds) { 4643baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 4653baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "checksum", 466503ad85cSMatthew Ahrens checksum_changed_cb, os)); 4673baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "compression", 468503ad85cSMatthew Ahrens compression_changed_cb, os)); 4693baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "copies", 470503ad85cSMatthew Ahrens copies_changed_cb, os)); 471*e09fa4daSNeil Perrin VERIFY(0 == dsl_prop_unregister(ds, "logbias", 472*e09fa4daSNeil Perrin logbias_changed_cb, os)); 4733baa08fcSek } 4743baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "primarycache", 475503ad85cSMatthew Ahrens primary_cache_changed_cb, os)); 4763baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "secondarycache", 477503ad85cSMatthew Ahrens secondary_cache_changed_cb, os)); 478fa9e4066Sahrens } 479fa9e4066Sahrens 480ea8dc4b6Seschrock /* 481ea8dc4b6Seschrock * We should need only a single pass over the dnode list, since 482ea8dc4b6Seschrock * nothing can be added to the list at this point. 483ea8dc4b6Seschrock */ 484503ad85cSMatthew Ahrens (void) dmu_objset_evict_dbufs(os); 485ea8dc4b6Seschrock 486503ad85cSMatthew Ahrens dnode_special_close(os->os_meta_dnode); 487503ad85cSMatthew Ahrens if (os->os_userused_dnode) { 488503ad85cSMatthew Ahrens dnode_special_close(os->os_userused_dnode); 489503ad85cSMatthew Ahrens dnode_special_close(os->os_groupused_dnode); 49014843421SMatthew Ahrens } 491503ad85cSMatthew Ahrens zil_free(os->os_zil); 492fa9e4066Sahrens 493503ad85cSMatthew Ahrens ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 49414843421SMatthew Ahrens 495503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf) == 1); 496503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 497503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 498503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 499503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 500fa9e4066Sahrens } 501fa9e4066Sahrens 502fa9e4066Sahrens /* called from dsl for meta-objset */ 503503ad85cSMatthew Ahrens objset_t * 504c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 505c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 506fa9e4066Sahrens { 507503ad85cSMatthew Ahrens objset_t *os; 508fa9e4066Sahrens dnode_t *mdn; 509fa9e4066Sahrens 510fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 51191ebeef5Sahrens if (ds) 51291ebeef5Sahrens mutex_enter(&ds->ds_opening_lock); 513503ad85cSMatthew Ahrens VERIFY(0 == dmu_objset_open_impl(spa, ds, bp, &os)); 51491ebeef5Sahrens if (ds) 51591ebeef5Sahrens mutex_exit(&ds->ds_opening_lock); 516503ad85cSMatthew Ahrens mdn = os->os_meta_dnode; 517fa9e4066Sahrens 518fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 519fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 520fa9e4066Sahrens 521fa9e4066Sahrens /* 522fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 523fa9e4066Sahrens * later, because then we could do it in quescing context while 524fa9e4066Sahrens * we are also accessing it in open context. 525fa9e4066Sahrens * 526fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 527fa9e4066Sahrens * because the MOS is only updated in syncing context. 528fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 529fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 530fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 531fa9e4066Sahrens */ 532ea8dc4b6Seschrock if (ds != NULL) { 533ea8dc4b6Seschrock int levels = 1; 534ea8dc4b6Seschrock 535ea8dc4b6Seschrock /* 536ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 537ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 538ea8dc4b6Seschrock */ 539ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 540ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 541ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 542ea8dc4b6Seschrock levels++; 543ea8dc4b6Seschrock 544fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 545ea8dc4b6Seschrock mdn->dn_nlevels = levels; 546ea8dc4b6Seschrock } 547fa9e4066Sahrens 548fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 549fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 550fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 551503ad85cSMatthew Ahrens os->os_phys->os_type = type; 552503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 553503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 554503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 55514843421SMatthew Ahrens } 556fa9e4066Sahrens 557fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 558fa9e4066Sahrens 559503ad85cSMatthew Ahrens return (os); 560fa9e4066Sahrens } 561fa9e4066Sahrens 562fa9e4066Sahrens struct oscarg { 563ecd6cf80Smarks void (*userfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 564fa9e4066Sahrens void *userarg; 565ae46e4c7SMatthew Ahrens dsl_dataset_t *clone_origin; 566fa9e4066Sahrens const char *lastname; 567fa9e4066Sahrens dmu_objset_type_t type; 568ab04eb8eStimh uint64_t flags; 569fa9e4066Sahrens }; 570fa9e4066Sahrens 571ecd6cf80Smarks /*ARGSUSED*/ 572fa9e4066Sahrens static int 5731d452cf5Sahrens dmu_objset_create_check(void *arg1, void *arg2, dmu_tx_t *tx) 574fa9e4066Sahrens { 5751d452cf5Sahrens dsl_dir_t *dd = arg1; 5761d452cf5Sahrens struct oscarg *oa = arg2; 5771d452cf5Sahrens objset_t *mos = dd->dd_pool->dp_meta_objset; 578fa9e4066Sahrens int err; 5791d452cf5Sahrens uint64_t ddobj; 5801d452cf5Sahrens 5811d452cf5Sahrens err = zap_lookup(mos, dd->dd_phys->dd_child_dir_zapobj, 5821d452cf5Sahrens oa->lastname, sizeof (uint64_t), 1, &ddobj); 5831d452cf5Sahrens if (err != ENOENT) 5841d452cf5Sahrens return (err ? err : EEXIST); 5851d452cf5Sahrens 586ae46e4c7SMatthew Ahrens if (oa->clone_origin != NULL) { 587ae46e4c7SMatthew Ahrens /* You can't clone across pools. */ 588ae46e4c7SMatthew Ahrens if (oa->clone_origin->ds_dir->dd_pool != dd->dd_pool) 5891d452cf5Sahrens return (EXDEV); 5901d452cf5Sahrens 591ae46e4c7SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 592ae46e4c7SMatthew Ahrens if (!dsl_dataset_is_snapshot(oa->clone_origin)) 5931d452cf5Sahrens return (EINVAL); 5941d452cf5Sahrens } 595ecd6cf80Smarks 5961d452cf5Sahrens return (0); 5971d452cf5Sahrens } 5981d452cf5Sahrens 5991d452cf5Sahrens static void 600ecd6cf80Smarks dmu_objset_create_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 6011d452cf5Sahrens { 6021d452cf5Sahrens dsl_dir_t *dd = arg1; 6031d452cf5Sahrens struct oscarg *oa = arg2; 6041d452cf5Sahrens uint64_t dsobj; 605fa9e4066Sahrens 606fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 607fa9e4066Sahrens 6081d452cf5Sahrens dsobj = dsl_dataset_create_sync(dd, oa->lastname, 609ae46e4c7SMatthew Ahrens oa->clone_origin, oa->flags, cr, tx); 610fa9e4066Sahrens 611ae46e4c7SMatthew Ahrens if (oa->clone_origin == NULL) { 612ae46e4c7SMatthew Ahrens dsl_dataset_t *ds; 613ae46e4c7SMatthew Ahrens blkptr_t *bp; 614503ad85cSMatthew Ahrens objset_t *os; 615fa9e4066Sahrens 616ae46e4c7SMatthew Ahrens VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, dsobj, 617ae46e4c7SMatthew Ahrens FTAG, &ds)); 618ae46e4c7SMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 619ae46e4c7SMatthew Ahrens ASSERT(BP_IS_HOLE(bp)); 620ae46e4c7SMatthew Ahrens 621503ad85cSMatthew Ahrens os = dmu_objset_create_impl(dsl_dataset_get_spa(ds), 622c717a561Smaybee ds, bp, oa->type, tx); 623fa9e4066Sahrens 624fa9e4066Sahrens if (oa->userfunc) 625503ad85cSMatthew Ahrens oa->userfunc(os, oa->userarg, cr, tx); 626ae46e4c7SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 627fa9e4066Sahrens } 628ecd6cf80Smarks 629ecd6cf80Smarks spa_history_internal_log(LOG_DS_CREATE, dd->dd_pool->dp_spa, 630ecd6cf80Smarks tx, cr, "dataset = %llu", dsobj); 631fa9e4066Sahrens } 632fa9e4066Sahrens 633fa9e4066Sahrens int 634ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 635ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 636fa9e4066Sahrens { 6371d452cf5Sahrens dsl_dir_t *pdd; 638fa9e4066Sahrens const char *tail; 639fa9e4066Sahrens int err = 0; 6401d452cf5Sahrens struct oscarg oa = { 0 }; 641fa9e4066Sahrens 6421d452cf5Sahrens ASSERT(strchr(name, '@') == NULL); 6431d452cf5Sahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 644ea8dc4b6Seschrock if (err) 645ea8dc4b6Seschrock return (err); 646fa9e4066Sahrens if (tail == NULL) { 6471d452cf5Sahrens dsl_dir_close(pdd, FTAG); 648fa9e4066Sahrens return (EEXIST); 649fa9e4066Sahrens } 650fa9e4066Sahrens 6511d452cf5Sahrens oa.userfunc = func; 6521d452cf5Sahrens oa.userarg = arg; 6531d452cf5Sahrens oa.lastname = tail; 6541d452cf5Sahrens oa.type = type; 655ab04eb8eStimh oa.flags = flags; 656ecd6cf80Smarks 657ae46e4c7SMatthew Ahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 658ae46e4c7SMatthew Ahrens dmu_objset_create_sync, pdd, &oa, 5); 659ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 660ae46e4c7SMatthew Ahrens return (err); 661ae46e4c7SMatthew Ahrens } 662ae46e4c7SMatthew Ahrens 663ae46e4c7SMatthew Ahrens int 664ae46e4c7SMatthew Ahrens dmu_objset_clone(const char *name, dsl_dataset_t *clone_origin, uint64_t flags) 665ae46e4c7SMatthew Ahrens { 666ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 667ae46e4c7SMatthew Ahrens const char *tail; 668ae46e4c7SMatthew Ahrens int err = 0; 669ae46e4c7SMatthew Ahrens struct oscarg oa = { 0 }; 670ae46e4c7SMatthew Ahrens 671ae46e4c7SMatthew Ahrens ASSERT(strchr(name, '@') == NULL); 672ae46e4c7SMatthew Ahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 673ae46e4c7SMatthew Ahrens if (err) 674ae46e4c7SMatthew Ahrens return (err); 675ae46e4c7SMatthew Ahrens if (tail == NULL) { 676ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 677ae46e4c7SMatthew Ahrens return (EEXIST); 678fa9e4066Sahrens } 679ae46e4c7SMatthew Ahrens 680ae46e4c7SMatthew Ahrens oa.lastname = tail; 681ae46e4c7SMatthew Ahrens oa.clone_origin = clone_origin; 682ae46e4c7SMatthew Ahrens oa.flags = flags; 683ae46e4c7SMatthew Ahrens 6841d452cf5Sahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 6851d452cf5Sahrens dmu_objset_create_sync, pdd, &oa, 5); 6861d452cf5Sahrens dsl_dir_close(pdd, FTAG); 687fa9e4066Sahrens return (err); 688fa9e4066Sahrens } 689fa9e4066Sahrens 690fa9e4066Sahrens int 691842727c2SChris Kirby dmu_objset_destroy(const char *name, boolean_t defer) 692fa9e4066Sahrens { 693503ad85cSMatthew Ahrens dsl_dataset_t *ds; 694fa9e4066Sahrens int error; 695fa9e4066Sahrens 696fa9e4066Sahrens /* 697ae46e4c7SMatthew Ahrens * dsl_dataset_destroy() can free any claimed-but-unplayed 698ae46e4c7SMatthew Ahrens * intent log, but if there is an active log, it has blocks that 699ae46e4c7SMatthew Ahrens * are allocated, but may not yet be reflected in the on-disk 700ae46e4c7SMatthew Ahrens * structure. Only the ZIL knows how to free them, so we have 701ae46e4c7SMatthew Ahrens * to call into it here. 702fa9e4066Sahrens */ 703503ad85cSMatthew Ahrens error = dsl_dataset_own(name, B_TRUE, FTAG, &ds); 704fa9e4066Sahrens if (error == 0) { 705503ad85cSMatthew Ahrens objset_t *os; 706503ad85cSMatthew Ahrens if (dmu_objset_from_ds(ds, &os) == 0) 707503ad85cSMatthew Ahrens zil_destroy(dmu_objset_zil(os), B_FALSE); 708503ad85cSMatthew Ahrens error = dsl_dataset_destroy(ds, FTAG, defer); 709ae46e4c7SMatthew Ahrens /* dsl_dataset_destroy() closes the ds. */ 710fa9e4066Sahrens } 711fa9e4066Sahrens 7123cb34c60Sahrens return (error); 713fa9e4066Sahrens } 714fa9e4066Sahrens 7151d452cf5Sahrens struct snaparg { 7161d452cf5Sahrens dsl_sync_task_group_t *dstg; 7171d452cf5Sahrens char *snapname; 7181d452cf5Sahrens char failed[MAXPATHLEN]; 719ecd6cf80Smarks boolean_t checkperms; 720ea2f5b9eSMatthew Ahrens nvlist_t *props; 7213cb34c60Sahrens }; 7223cb34c60Sahrens 723ea2f5b9eSMatthew Ahrens static int 724ea2f5b9eSMatthew Ahrens snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) 725ea2f5b9eSMatthew Ahrens { 726ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 727ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 728ea2f5b9eSMatthew Ahrens 729ea2f5b9eSMatthew Ahrens /* The props have already been checked by zfs_check_userprops(). */ 730ea2f5b9eSMatthew Ahrens 731503ad85cSMatthew Ahrens return (dsl_dataset_snapshot_check(os->os_dsl_dataset, 732ea2f5b9eSMatthew Ahrens sn->snapname, tx)); 733ea2f5b9eSMatthew Ahrens } 734ea2f5b9eSMatthew Ahrens 735ea2f5b9eSMatthew Ahrens static void 736ea2f5b9eSMatthew Ahrens snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 737ea2f5b9eSMatthew Ahrens { 738ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 739503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 740ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 741ea2f5b9eSMatthew Ahrens 742ea2f5b9eSMatthew Ahrens dsl_dataset_snapshot_sync(ds, sn->snapname, cr, tx); 743ea2f5b9eSMatthew Ahrens 744ea2f5b9eSMatthew Ahrens if (sn->props) 745ea2f5b9eSMatthew Ahrens dsl_props_set_sync(ds->ds_prev, sn->props, cr, tx); 746ea2f5b9eSMatthew Ahrens } 7471d452cf5Sahrens 7481d452cf5Sahrens static int 7491d452cf5Sahrens dmu_objset_snapshot_one(char *name, void *arg) 7501d452cf5Sahrens { 7511d452cf5Sahrens struct snaparg *sn = arg; 7521d452cf5Sahrens objset_t *os; 7531d452cf5Sahrens int err; 7541d452cf5Sahrens 7551d452cf5Sahrens (void) strcpy(sn->failed, name); 7561d452cf5Sahrens 757ecd6cf80Smarks /* 758ecd6cf80Smarks * Check permissions only when requested. This only applies when 759ecd6cf80Smarks * doing a recursive snapshot. The permission checks for the starting 760ecd6cf80Smarks * dataset have already been performed in zfs_secpolicy_snapshot() 761ecd6cf80Smarks */ 762ecd6cf80Smarks if (sn->checkperms == B_TRUE && 763ecd6cf80Smarks (err = zfs_secpolicy_snapshot_perms(name, CRED()))) 764ecd6cf80Smarks return (err); 765ecd6cf80Smarks 766503ad85cSMatthew Ahrens err = dmu_objset_hold(name, sn, &os); 7671d452cf5Sahrens if (err != 0) 7681d452cf5Sahrens return (err); 7691d452cf5Sahrens 770745cd3c5Smaybee /* If the objset is in an inconsistent state, return busy */ 771503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) { 772503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 773f2e10be3Srm return (EBUSY); 774f2e10be3Srm } 775f2e10be3Srm 7761d452cf5Sahrens /* 7771d452cf5Sahrens * NB: we need to wait for all in-flight changes to get to disk, 7781d452cf5Sahrens * so that we snapshot those changes. zil_suspend does this as 7791d452cf5Sahrens * a side effect. 7801d452cf5Sahrens */ 7811d452cf5Sahrens err = zil_suspend(dmu_objset_zil(os)); 7821d452cf5Sahrens if (err == 0) { 783ea2f5b9eSMatthew Ahrens dsl_sync_task_create(sn->dstg, snapshot_check, 784ea2f5b9eSMatthew Ahrens snapshot_sync, os, sn, 3); 785f2e10be3Srm } else { 786503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 7871d452cf5Sahrens } 788f2e10be3Srm 7891d452cf5Sahrens return (err); 7901d452cf5Sahrens } 7911d452cf5Sahrens 7921d452cf5Sahrens int 793ea2f5b9eSMatthew Ahrens dmu_objset_snapshot(char *fsname, char *snapname, 794ea2f5b9eSMatthew Ahrens nvlist_t *props, boolean_t recursive) 7951d452cf5Sahrens { 7961d452cf5Sahrens dsl_sync_task_t *dst; 797ea2f5b9eSMatthew Ahrens struct snaparg sn; 7981d452cf5Sahrens spa_t *spa; 7991d452cf5Sahrens int err; 8001d452cf5Sahrens 8011d452cf5Sahrens (void) strcpy(sn.failed, fsname); 8021d452cf5Sahrens 80340feaa91Sahrens err = spa_open(fsname, &spa, FTAG); 8041d452cf5Sahrens if (err) 8051d452cf5Sahrens return (err); 8061d452cf5Sahrens 8071d452cf5Sahrens sn.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); 8081d452cf5Sahrens sn.snapname = snapname; 809ea2f5b9eSMatthew Ahrens sn.props = props; 8101d452cf5Sahrens 8110b69c2f0Sahrens if (recursive) { 812ecd6cf80Smarks sn.checkperms = B_TRUE; 8130b69c2f0Sahrens err = dmu_objset_find(fsname, 8140b69c2f0Sahrens dmu_objset_snapshot_one, &sn, DS_FIND_CHILDREN); 8150b69c2f0Sahrens } else { 816ecd6cf80Smarks sn.checkperms = B_FALSE; 8171d452cf5Sahrens err = dmu_objset_snapshot_one(fsname, &sn); 8180b69c2f0Sahrens } 8191d452cf5Sahrens 820ea2f5b9eSMatthew Ahrens if (err == 0) 821ea2f5b9eSMatthew Ahrens err = dsl_sync_task_group_wait(sn.dstg); 8221d452cf5Sahrens 8231d452cf5Sahrens for (dst = list_head(&sn.dstg->dstg_tasks); dst; 8241d452cf5Sahrens dst = list_next(&sn.dstg->dstg_tasks, dst)) { 825ea2f5b9eSMatthew Ahrens objset_t *os = dst->dst_arg1; 826503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 8271d452cf5Sahrens if (dst->dst_err) 8283cb34c60Sahrens dsl_dataset_name(ds, sn.failed); 829ea2f5b9eSMatthew Ahrens zil_resume(dmu_objset_zil(os)); 830503ad85cSMatthew Ahrens dmu_objset_rele(os, &sn); 8313cb34c60Sahrens } 8323cb34c60Sahrens 8331d452cf5Sahrens if (err) 8341d452cf5Sahrens (void) strcpy(fsname, sn.failed); 8351d452cf5Sahrens dsl_sync_task_group_destroy(sn.dstg); 8361d452cf5Sahrens spa_close(spa, FTAG); 8371d452cf5Sahrens return (err); 8381d452cf5Sahrens } 8391d452cf5Sahrens 840fa9e4066Sahrens static void 84114843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 842fa9e4066Sahrens { 843c717a561Smaybee dnode_t *dn; 844faafa6e3Sahrens 845c717a561Smaybee while (dn = list_head(list)) { 846c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 847c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 848c717a561Smaybee /* 84914843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 85014843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 851c717a561Smaybee */ 852c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 853c717a561Smaybee ASSERT(dn->dn_zio); 854faafa6e3Sahrens 855c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 856c717a561Smaybee list_remove(list, dn); 85714843421SMatthew Ahrens 85814843421SMatthew Ahrens if (newlist) { 85914843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 86014843421SMatthew Ahrens list_insert_tail(newlist, dn); 86114843421SMatthew Ahrens } 86214843421SMatthew Ahrens 863c717a561Smaybee dnode_sync(dn, tx); 864fa9e4066Sahrens } 865fa9e4066Sahrens } 866fa9e4066Sahrens 867fa9e4066Sahrens /* ARGSUSED */ 868fa9e4066Sahrens static void 869c717a561Smaybee ready(zio_t *zio, arc_buf_t *abuf, void *arg) 870fa9e4066Sahrens { 871e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 872e14bb325SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 873503ad85cSMatthew Ahrens objset_t *os = arg; 874c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 875fa9e4066Sahrens 876e14bb325SJeff Bonwick ASSERT(bp == os->os_rootbp); 877e14bb325SJeff Bonwick ASSERT(BP_GET_TYPE(bp) == DMU_OT_OBJSET); 878e14bb325SJeff Bonwick ASSERT(BP_GET_LEVEL(bp) == 0); 8790a4e9518Sgw 880fa9e4066Sahrens /* 88114843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 88214843421SMatthew Ahrens * allocated in the object set (not counting the "special" 88314843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 88414843421SMatthew Ahrens * dnode and user/group accounting objects). 885fa9e4066Sahrens */ 88614843421SMatthew Ahrens bp->blk_fill = 0; 887e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 888c717a561Smaybee bp->blk_fill += dnp->dn_blkptr[i].blk_fill; 8890a4e9518Sgw 890e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 891e14bb325SJeff Bonwick ASSERT(DVA_EQUAL(BP_IDENTITY(bp), BP_IDENTITY(bp_orig))); 892e14bb325SJeff Bonwick } else { 8930a4e9518Sgw if (zio->io_bp_orig.blk_birth == os->os_synctx->tx_txg) 894cdb0ab79Smaybee (void) dsl_dataset_block_kill(os->os_dsl_dataset, 895e14bb325SJeff Bonwick &zio->io_bp_orig, zio, os->os_synctx); 8960a4e9518Sgw dsl_dataset_block_born(os->os_dsl_dataset, bp, os->os_synctx); 8970a4e9518Sgw } 898c717a561Smaybee } 899c717a561Smaybee 900fa9e4066Sahrens /* called from dsl */ 901fa9e4066Sahrens void 902503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 903fa9e4066Sahrens { 904fa9e4066Sahrens int txgoff; 905ea8dc4b6Seschrock zbookmark_t zb; 906088f3894Sahrens writeprops_t wp = { 0 }; 907c717a561Smaybee zio_t *zio; 908c717a561Smaybee list_t *list; 90914843421SMatthew Ahrens list_t *newlist = NULL; 910c717a561Smaybee dbuf_dirty_record_t *dr; 911c717a561Smaybee 912c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 913fa9e4066Sahrens 914fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 915fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 916fa9e4066Sahrens os->os_synctx = tx; 917fa9e4066Sahrens 91887bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 91987bd5c1eSahrens /* 92087bd5c1eSahrens * This is the MOS. If we have upgraded, 92187bd5c1eSahrens * spa_max_replication() could change, so reset 92287bd5c1eSahrens * os_copies here. 92387bd5c1eSahrens */ 92487bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 92587bd5c1eSahrens } 92687bd5c1eSahrens 927fa9e4066Sahrens /* 928c717a561Smaybee * Create the root block IO 929fa9e4066Sahrens */ 930ea8dc4b6Seschrock zb.zb_objset = os->os_dsl_dataset ? os->os_dsl_dataset->ds_object : 0; 931ea8dc4b6Seschrock zb.zb_object = 0; 932e14bb325SJeff Bonwick zb.zb_level = -1; /* for block ordering; it's level 0 on disk */ 933ea8dc4b6Seschrock zb.zb_blkid = 0; 934e14bb325SJeff Bonwick 935088f3894Sahrens wp.wp_type = DMU_OT_OBJSET; 936e14bb325SJeff Bonwick wp.wp_level = 0; /* on-disk BP level; see above */ 937088f3894Sahrens wp.wp_copies = os->os_copies; 938088f3894Sahrens wp.wp_oschecksum = os->os_checksum; 939088f3894Sahrens wp.wp_oscompress = os->os_compress; 940e14bb325SJeff Bonwick 941e14bb325SJeff Bonwick if (BP_IS_OLDER(os->os_rootbp, tx->tx_txg)) { 942e14bb325SJeff Bonwick (void) dsl_dataset_block_kill(os->os_dsl_dataset, 943e14bb325SJeff Bonwick os->os_rootbp, pio, tx); 944e14bb325SJeff Bonwick } 945e14bb325SJeff Bonwick 946088f3894Sahrens arc_release(os->os_phys_buf, &os->os_phys_buf); 94714843421SMatthew Ahrens 948e14bb325SJeff Bonwick zio = arc_write(pio, os->os_spa, &wp, DMU_OS_IS_L2CACHEABLE(os), 949e14bb325SJeff Bonwick tx->tx_txg, os->os_rootbp, os->os_phys_buf, ready, NULL, os, 950e14bb325SJeff Bonwick ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); 951c717a561Smaybee 952c717a561Smaybee /* 95314843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 954c717a561Smaybee */ 955c717a561Smaybee os->os_meta_dnode->dn_zio = zio; 956c717a561Smaybee dnode_sync(os->os_meta_dnode, tx); 957c717a561Smaybee 95814843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 95914843421SMatthew Ahrens 96014843421SMatthew Ahrens if (os->os_userused_dnode && 96114843421SMatthew Ahrens os->os_userused_dnode->dn_type != DMU_OT_NONE) { 96214843421SMatthew Ahrens os->os_userused_dnode->dn_zio = zio; 96314843421SMatthew Ahrens dnode_sync(os->os_userused_dnode, tx); 96414843421SMatthew Ahrens os->os_groupused_dnode->dn_zio = zio; 96514843421SMatthew Ahrens dnode_sync(os->os_groupused_dnode, tx); 96614843421SMatthew Ahrens } 96714843421SMatthew Ahrens 968c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 969fa9e4066Sahrens 97014843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 97114843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 97214843421SMatthew Ahrens /* 97314843421SMatthew Ahrens * We must create the list here because it uses the 97414843421SMatthew Ahrens * dn_dirty_link[] of this txg. 97514843421SMatthew Ahrens */ 97614843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 97714843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 97814843421SMatthew Ahrens } 97914843421SMatthew Ahrens 98014843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 98114843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 982fa9e4066Sahrens 983c717a561Smaybee list = &os->os_meta_dnode->dn_dirty_records[txgoff]; 984c717a561Smaybee while (dr = list_head(list)) { 985c717a561Smaybee ASSERT(dr->dr_dbuf->db_level == 0); 986c717a561Smaybee list_remove(list, dr); 987c717a561Smaybee if (dr->dr_zio) 988c717a561Smaybee zio_nowait(dr->dr_zio); 989c717a561Smaybee } 990c717a561Smaybee /* 991c717a561Smaybee * Free intent log blocks up to this tx. 992c717a561Smaybee */ 993c717a561Smaybee zil_sync(os->os_zil, tx); 994088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 995c717a561Smaybee zio_nowait(zio); 996fa9e4066Sahrens } 997fa9e4066Sahrens 99814843421SMatthew Ahrens static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 99914843421SMatthew Ahrens 100014843421SMatthew Ahrens void 100114843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 100214843421SMatthew Ahrens { 100314843421SMatthew Ahrens used_cbs[ost] = cb; 100414843421SMatthew Ahrens } 100514843421SMatthew Ahrens 100614843421SMatthew Ahrens boolean_t 1007503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 100814843421SMatthew Ahrens { 100914843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 101014843421SMatthew Ahrens used_cbs[os->os_phys->os_type] && 101114843421SMatthew Ahrens os->os_userused_dnode); 101214843421SMatthew Ahrens } 101314843421SMatthew Ahrens 101414843421SMatthew Ahrens void 1015503ad85cSMatthew Ahrens dmu_objset_do_userquota_callbacks(objset_t *os, dmu_tx_t *tx) 101614843421SMatthew Ahrens { 101714843421SMatthew Ahrens dnode_t *dn; 101814843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 101914843421SMatthew Ahrens static const char zerobuf[DN_MAX_BONUSLEN] = {0}; 102014843421SMatthew Ahrens 102114843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 102214843421SMatthew Ahrens 102314843421SMatthew Ahrens while (dn = list_head(list)) { 102414843421SMatthew Ahrens dmu_object_type_t bonustype; 102514843421SMatthew Ahrens 102614843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 102714843421SMatthew Ahrens ASSERT(dn->dn_oldphys); 102814843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 102914843421SMatthew Ahrens dn->dn_phys->dn_flags & 103014843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 103114843421SMatthew Ahrens 103214843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 103314843421SMatthew Ahrens if (os->os_userused_dnode->dn_type == DMU_OT_NONE) { 1034503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 103514843421SMatthew Ahrens DMU_USERUSED_OBJECT, 103614843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1037503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 103814843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 103914843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 104014843421SMatthew Ahrens } 104114843421SMatthew Ahrens 104214843421SMatthew Ahrens /* 104314843421SMatthew Ahrens * If the object was not previously 104414843421SMatthew Ahrens * accounted, pretend that it was free. 104514843421SMatthew Ahrens */ 104614843421SMatthew Ahrens if (!(dn->dn_oldphys->dn_flags & 104714843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED)) { 104814843421SMatthew Ahrens bzero(dn->dn_oldphys, sizeof (dnode_phys_t)); 104914843421SMatthew Ahrens } 105014843421SMatthew Ahrens 105114843421SMatthew Ahrens /* 105214843421SMatthew Ahrens * If the object was freed, use the previous bonustype. 105314843421SMatthew Ahrens */ 105414843421SMatthew Ahrens bonustype = dn->dn_phys->dn_bonustype ? 105514843421SMatthew Ahrens dn->dn_phys->dn_bonustype : dn->dn_oldphys->dn_bonustype; 105614843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type != 0 || 105714843421SMatthew Ahrens (bcmp(DN_BONUS(dn->dn_phys), zerobuf, 105814843421SMatthew Ahrens DN_MAX_BONUSLEN) == 0 && 105914843421SMatthew Ahrens DN_USED_BYTES(dn->dn_phys) == 0)); 106014843421SMatthew Ahrens ASSERT(dn->dn_oldphys->dn_type != 0 || 106114843421SMatthew Ahrens (bcmp(DN_BONUS(dn->dn_oldphys), zerobuf, 106214843421SMatthew Ahrens DN_MAX_BONUSLEN) == 0 && 106314843421SMatthew Ahrens DN_USED_BYTES(dn->dn_oldphys) == 0)); 1064503ad85cSMatthew Ahrens used_cbs[os->os_phys->os_type](os, bonustype, 106514843421SMatthew Ahrens DN_BONUS(dn->dn_oldphys), DN_BONUS(dn->dn_phys), 106614843421SMatthew Ahrens DN_USED_BYTES(dn->dn_oldphys), 106714843421SMatthew Ahrens DN_USED_BYTES(dn->dn_phys), tx); 106814843421SMatthew Ahrens 106914843421SMatthew Ahrens /* 107014843421SMatthew Ahrens * The mutex is needed here for interlock with dnode_allocate. 107114843421SMatthew Ahrens */ 107214843421SMatthew Ahrens mutex_enter(&dn->dn_mtx); 107314843421SMatthew Ahrens zio_buf_free(dn->dn_oldphys, sizeof (dnode_phys_t)); 107414843421SMatthew Ahrens dn->dn_oldphys = NULL; 107514843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 107614843421SMatthew Ahrens 107714843421SMatthew Ahrens list_remove(list, dn); 107814843421SMatthew Ahrens dnode_rele(dn, list); 107914843421SMatthew Ahrens } 108014843421SMatthew Ahrens } 108114843421SMatthew Ahrens 108214843421SMatthew Ahrens boolean_t 108314843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 108414843421SMatthew Ahrens { 1085503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 108614843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 108714843421SMatthew Ahrens } 108814843421SMatthew Ahrens 108914843421SMatthew Ahrens int 109014843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 109114843421SMatthew Ahrens { 109214843421SMatthew Ahrens uint64_t obj; 109314843421SMatthew Ahrens int err = 0; 109414843421SMatthew Ahrens 109514843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 109614843421SMatthew Ahrens return (0); 1097503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 109814843421SMatthew Ahrens return (ENOTSUP); 109914843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 110014843421SMatthew Ahrens return (EINVAL); 110114843421SMatthew Ahrens 110214843421SMatthew Ahrens /* 110314843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 110414843421SMatthew Ahrens * synced out and now accounted. If this is called 110514843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 110614843421SMatthew Ahrens * that's fine, since we track each object's accounted state 110714843421SMatthew Ahrens * independently. 110814843421SMatthew Ahrens */ 110914843421SMatthew Ahrens 111014843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 111168857716SLin Ling dmu_tx_t *tx; 111214843421SMatthew Ahrens dmu_buf_t *db; 111314843421SMatthew Ahrens int objerr; 111414843421SMatthew Ahrens 111514843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 111614843421SMatthew Ahrens return (EINTR); 111714843421SMatthew Ahrens 111814843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 111914843421SMatthew Ahrens if (objerr) 112014843421SMatthew Ahrens continue; 112168857716SLin Ling tx = dmu_tx_create(os); 112214843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 112314843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 112414843421SMatthew Ahrens if (objerr) { 112514843421SMatthew Ahrens dmu_tx_abort(tx); 112614843421SMatthew Ahrens continue; 112714843421SMatthew Ahrens } 112814843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 112914843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 113014843421SMatthew Ahrens dmu_tx_commit(tx); 113114843421SMatthew Ahrens } 113214843421SMatthew Ahrens 1133503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 113414843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 113514843421SMatthew Ahrens return (0); 113614843421SMatthew Ahrens } 113714843421SMatthew Ahrens 1138fa9e4066Sahrens void 1139a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1140a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1141fa9e4066Sahrens { 1142503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1143a2eea2e1Sahrens usedobjsp, availobjsp); 1144a2eea2e1Sahrens } 1145a2eea2e1Sahrens 1146a2eea2e1Sahrens uint64_t 1147a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1148a2eea2e1Sahrens { 1149503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1150a2eea2e1Sahrens } 1151a2eea2e1Sahrens 1152a2eea2e1Sahrens void 1153a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1154a2eea2e1Sahrens { 1155503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1156503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1157503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1158a2eea2e1Sahrens } 1159a2eea2e1Sahrens 1160a2eea2e1Sahrens void 1161a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1162a2eea2e1Sahrens { 1163503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1164503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1165a2eea2e1Sahrens 1166503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1167503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1168a2eea2e1Sahrens 1169a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1170503ad85cSMatthew Ahrens os->os_phys->os_type); 117114843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 117214843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1173fa9e4066Sahrens } 1174fa9e4066Sahrens 1175fa9e4066Sahrens int 1176fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1177fa9e4066Sahrens { 1178503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1179503ad85cSMatthew Ahrens return (dsl_dataset_is_snapshot(os->os_dsl_dataset)); 1180fa9e4066Sahrens else 1181fa9e4066Sahrens return (B_FALSE); 1182fa9e4066Sahrens } 1183fa9e4066Sahrens 1184ab04eb8eStimh int 1185ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1186ab04eb8eStimh boolean_t *conflict) 1187ab04eb8eStimh { 1188503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1189ab04eb8eStimh uint64_t ignored; 1190ab04eb8eStimh 1191ab04eb8eStimh if (ds->ds_phys->ds_snapnames_zapobj == 0) 1192ab04eb8eStimh return (ENOENT); 1193ab04eb8eStimh 1194ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1195ab04eb8eStimh ds->ds_phys->ds_snapnames_zapobj, name, 8, 1, &ignored, MT_FIRST, 1196ab04eb8eStimh real, maxlen, conflict)); 1197ab04eb8eStimh } 1198ab04eb8eStimh 1199fa9e4066Sahrens int 1200fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1201b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1202fa9e4066Sahrens { 1203503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1204fa9e4066Sahrens zap_cursor_t cursor; 1205fa9e4066Sahrens zap_attribute_t attr; 1206fa9e4066Sahrens 1207fa9e4066Sahrens if (ds->ds_phys->ds_snapnames_zapobj == 0) 1208fa9e4066Sahrens return (ENOENT); 1209fa9e4066Sahrens 1210fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1211fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1212fa9e4066Sahrens ds->ds_phys->ds_snapnames_zapobj, *offp); 1213fa9e4066Sahrens 121487e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 121587e5029aSahrens zap_cursor_fini(&cursor); 121687e5029aSahrens return (ENOENT); 121787e5029aSahrens } 121887e5029aSahrens 121987e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 122087e5029aSahrens zap_cursor_fini(&cursor); 122187e5029aSahrens return (ENAMETOOLONG); 122287e5029aSahrens } 122387e5029aSahrens 122487e5029aSahrens (void) strcpy(name, attr.za_name); 122587e5029aSahrens if (idp) 122687e5029aSahrens *idp = attr.za_first_integer; 1227b38f0970Sck if (case_conflict) 1228b38f0970Sck *case_conflict = attr.za_normalization_conflict; 122987e5029aSahrens zap_cursor_advance(&cursor); 123087e5029aSahrens *offp = zap_cursor_serialize(&cursor); 123187e5029aSahrens zap_cursor_fini(&cursor); 123287e5029aSahrens 123387e5029aSahrens return (0); 123487e5029aSahrens } 123587e5029aSahrens 123687e5029aSahrens int 123787e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 123887e5029aSahrens uint64_t *idp, uint64_t *offp) 123987e5029aSahrens { 1240503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 124187e5029aSahrens zap_cursor_t cursor; 124287e5029aSahrens zap_attribute_t attr; 124387e5029aSahrens 124487e5029aSahrens /* there is no next dir on a snapshot! */ 1245503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 124687e5029aSahrens dd->dd_phys->dd_head_dataset_obj) 1247fa9e4066Sahrens return (ENOENT); 1248fa9e4066Sahrens 124987e5029aSahrens zap_cursor_init_serialized(&cursor, 125087e5029aSahrens dd->dd_pool->dp_meta_objset, 125187e5029aSahrens dd->dd_phys->dd_child_dir_zapobj, *offp); 125287e5029aSahrens 125387e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 125487e5029aSahrens zap_cursor_fini(&cursor); 125587e5029aSahrens return (ENOENT); 125687e5029aSahrens } 125787e5029aSahrens 125887e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 125987e5029aSahrens zap_cursor_fini(&cursor); 1260fa9e4066Sahrens return (ENAMETOOLONG); 126187e5029aSahrens } 1262fa9e4066Sahrens 1263fa9e4066Sahrens (void) strcpy(name, attr.za_name); 126487e5029aSahrens if (idp) 126587e5029aSahrens *idp = attr.za_first_integer; 1266fa9e4066Sahrens zap_cursor_advance(&cursor); 1267fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 126887e5029aSahrens zap_cursor_fini(&cursor); 1269fa9e4066Sahrens 1270fa9e4066Sahrens return (0); 1271fa9e4066Sahrens } 1272fa9e4066Sahrens 1273088f3894Sahrens struct findarg { 1274088f3894Sahrens int (*func)(char *, void *); 1275088f3894Sahrens void *arg; 1276088f3894Sahrens }; 1277088f3894Sahrens 1278088f3894Sahrens /* ARGSUSED */ 1279088f3894Sahrens static int 1280088f3894Sahrens findfunc(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg) 1281088f3894Sahrens { 1282088f3894Sahrens struct findarg *fa = arg; 1283088f3894Sahrens return (fa->func((char *)dsname, fa->arg)); 1284088f3894Sahrens } 1285088f3894Sahrens 1286fa9e4066Sahrens /* 1287fa9e4066Sahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 1288088f3894Sahrens * Perhaps change all callers to use dmu_objset_find_spa()? 1289fa9e4066Sahrens */ 12901d452cf5Sahrens int 12911d452cf5Sahrens dmu_objset_find(char *name, int func(char *, void *), void *arg, int flags) 1292088f3894Sahrens { 1293088f3894Sahrens struct findarg fa; 1294088f3894Sahrens fa.func = func; 1295088f3894Sahrens fa.arg = arg; 1296088f3894Sahrens return (dmu_objset_find_spa(NULL, name, findfunc, &fa, flags)); 1297088f3894Sahrens } 1298088f3894Sahrens 1299088f3894Sahrens /* 1300088f3894Sahrens * Find all objsets under name, call func on each 1301088f3894Sahrens */ 1302088f3894Sahrens int 1303088f3894Sahrens dmu_objset_find_spa(spa_t *spa, const char *name, 1304088f3894Sahrens int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags) 1305fa9e4066Sahrens { 1306fa9e4066Sahrens dsl_dir_t *dd; 1307088f3894Sahrens dsl_pool_t *dp; 1308088f3894Sahrens dsl_dataset_t *ds; 1309fa9e4066Sahrens zap_cursor_t zc; 1310b7661cccSmmusante zap_attribute_t *attr; 1311fa9e4066Sahrens char *child; 1312088f3894Sahrens uint64_t thisobj; 1313088f3894Sahrens int err; 1314fa9e4066Sahrens 1315088f3894Sahrens if (name == NULL) 1316088f3894Sahrens name = spa_name(spa); 1317088f3894Sahrens err = dsl_dir_open_spa(spa, name, FTAG, &dd, NULL); 1318ea8dc4b6Seschrock if (err) 13191d452cf5Sahrens return (err); 1320fa9e4066Sahrens 1321088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1322088f3894Sahrens if (dd->dd_myname[0] == '$') { 1323088f3894Sahrens dsl_dir_close(dd, FTAG); 1324088f3894Sahrens return (0); 1325088f3894Sahrens } 1326088f3894Sahrens 1327088f3894Sahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 1328b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1329088f3894Sahrens dp = dd->dd_pool; 1330fa9e4066Sahrens 1331fa9e4066Sahrens /* 1332fa9e4066Sahrens * Iterate over all children. 1333fa9e4066Sahrens */ 13340b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1335088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 13360b69c2f0Sahrens dd->dd_phys->dd_child_dir_zapobj); 1337b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 13380b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 1339b7661cccSmmusante ASSERT(attr->za_integer_length == sizeof (uint64_t)); 1340b7661cccSmmusante ASSERT(attr->za_num_integers == 1); 1341fa9e4066Sahrens 13420b69c2f0Sahrens child = kmem_alloc(MAXPATHLEN, KM_SLEEP); 1343088f3894Sahrens (void) strcpy(child, name); 13440b69c2f0Sahrens (void) strcat(child, "/"); 1345b7661cccSmmusante (void) strcat(child, attr->za_name); 1346088f3894Sahrens err = dmu_objset_find_spa(spa, child, func, arg, flags); 13470b69c2f0Sahrens kmem_free(child, MAXPATHLEN); 13480b69c2f0Sahrens if (err) 13490b69c2f0Sahrens break; 13500b69c2f0Sahrens } 13510b69c2f0Sahrens zap_cursor_fini(&zc); 13521d452cf5Sahrens 13530b69c2f0Sahrens if (err) { 13540b69c2f0Sahrens dsl_dir_close(dd, FTAG); 1355b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 13560b69c2f0Sahrens return (err); 13570b69c2f0Sahrens } 1358fa9e4066Sahrens } 1359fa9e4066Sahrens 1360fa9e4066Sahrens /* 1361fa9e4066Sahrens * Iterate over all snapshots. 1362fa9e4066Sahrens */ 1363088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1364088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1365088f3894Sahrens rw_enter(&dp->dp_config_rwlock, RW_READER); 1366088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1367088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1368088f3894Sahrens rw_exit(&dp->dp_config_rwlock); 1369088f3894Sahrens 1370088f3894Sahrens if (err == 0) { 1371088f3894Sahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 1372088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1373088f3894Sahrens 1374088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1375088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1376088f3894Sahrens (void) zap_cursor_advance(&zc)) { 1377088f3894Sahrens ASSERT(attr->za_integer_length == 1378088f3894Sahrens sizeof (uint64_t)); 1379088f3894Sahrens ASSERT(attr->za_num_integers == 1); 1380088f3894Sahrens 1381088f3894Sahrens child = kmem_alloc(MAXPATHLEN, KM_SLEEP); 1382088f3894Sahrens (void) strcpy(child, name); 1383088f3894Sahrens (void) strcat(child, "@"); 1384088f3894Sahrens (void) strcat(child, attr->za_name); 1385088f3894Sahrens err = func(spa, attr->za_first_integer, 1386088f3894Sahrens child, arg); 1387088f3894Sahrens kmem_free(child, MAXPATHLEN); 1388088f3894Sahrens if (err) 1389088f3894Sahrens break; 1390088f3894Sahrens } 1391088f3894Sahrens zap_cursor_fini(&zc); 1392fa9e4066Sahrens } 1393fa9e4066Sahrens } 1394fa9e4066Sahrens 1395fa9e4066Sahrens dsl_dir_close(dd, FTAG); 1396b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 1397fa9e4066Sahrens 13981d452cf5Sahrens if (err) 13991d452cf5Sahrens return (err); 14001d452cf5Sahrens 1401fa9e4066Sahrens /* 1402fa9e4066Sahrens * Apply to self if appropriate. 1403fa9e4066Sahrens */ 1404088f3894Sahrens err = func(spa, thisobj, name, arg); 14051d452cf5Sahrens return (err); 1406fa9e4066Sahrens } 1407f18faf3fSek 14087f73c863SRich Morris /* ARGSUSED */ 14097f73c863SRich Morris int 14107f73c863SRich Morris dmu_objset_prefetch(char *name, void *arg) 14117f73c863SRich Morris { 14127f73c863SRich Morris dsl_dataset_t *ds; 14137f73c863SRich Morris 14147f73c863SRich Morris if (dsl_dataset_hold(name, FTAG, &ds)) 14157f73c863SRich Morris return (0); 14167f73c863SRich Morris 14177f73c863SRich Morris if (!BP_IS_HOLE(&ds->ds_phys->ds_bp)) { 14187f73c863SRich Morris mutex_enter(&ds->ds_opening_lock); 1419503ad85cSMatthew Ahrens if (ds->ds_objset == NULL) { 14207f73c863SRich Morris uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH; 14217f73c863SRich Morris zbookmark_t zb; 14227f73c863SRich Morris 14237f73c863SRich Morris zb.zb_objset = ds->ds_object; 14247f73c863SRich Morris zb.zb_object = 0; 14257f73c863SRich Morris zb.zb_level = -1; 14267f73c863SRich Morris zb.zb_blkid = 0; 14277f73c863SRich Morris 14287f73c863SRich Morris (void) arc_read_nolock(NULL, dsl_dataset_get_spa(ds), 14297f73c863SRich Morris &ds->ds_phys->ds_bp, NULL, NULL, 14307f73c863SRich Morris ZIO_PRIORITY_ASYNC_READ, 14317f73c863SRich Morris ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE, 14327f73c863SRich Morris &aflags, &zb); 14337f73c863SRich Morris } 14347f73c863SRich Morris mutex_exit(&ds->ds_opening_lock); 14357f73c863SRich Morris } 14367f73c863SRich Morris 14377f73c863SRich Morris dsl_dataset_rele(ds, FTAG); 14387f73c863SRich Morris return (0); 14397f73c863SRich Morris } 14407f73c863SRich Morris 1441f18faf3fSek void 1442f18faf3fSek dmu_objset_set_user(objset_t *os, void *user_ptr) 1443f18faf3fSek { 1444503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1445503ad85cSMatthew Ahrens os->os_user_ptr = user_ptr; 1446f18faf3fSek } 1447f18faf3fSek 1448f18faf3fSek void * 1449f18faf3fSek dmu_objset_get_user(objset_t *os) 1450f18faf3fSek { 1451503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1452503ad85cSMatthew Ahrens return (os->os_user_ptr); 1453f18faf3fSek } 1454