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. 23fa9e4066Sahrens */ 24fa9e4066Sahrens 2555da60b9SMark J Musante /* Portions Copyright 2010 Robert Milkowski */ 2655da60b9SMark J Musante 27ecd6cf80Smarks #include <sys/cred.h> 28fa9e4066Sahrens #include <sys/zfs_context.h> 29fa9e4066Sahrens #include <sys/dmu_objset.h> 30fa9e4066Sahrens #include <sys/dsl_dir.h> 31fa9e4066Sahrens #include <sys/dsl_dataset.h> 32fa9e4066Sahrens #include <sys/dsl_prop.h> 33fa9e4066Sahrens #include <sys/dsl_pool.h> 341d452cf5Sahrens #include <sys/dsl_synctask.h> 35ecd6cf80Smarks #include <sys/dsl_deleg.h> 36fa9e4066Sahrens #include <sys/dnode.h> 37fa9e4066Sahrens #include <sys/dbuf.h> 38a2eea2e1Sahrens #include <sys/zvol.h> 39fa9e4066Sahrens #include <sys/dmu_tx.h> 40fa9e4066Sahrens #include <sys/zap.h> 41fa9e4066Sahrens #include <sys/zil.h> 42fa9e4066Sahrens #include <sys/dmu_impl.h> 43ecd6cf80Smarks #include <sys/zfs_ioctl.h> 440a586ceaSMark Shellenbaum #include <sys/sa.h> 45fa9e4066Sahrens 46744947dcSTom Erickson /* 47744947dcSTom Erickson * Needed to close a window in dnode_move() that allows the objset to be freed 48744947dcSTom Erickson * before it can be safely accessed. 49744947dcSTom Erickson */ 50744947dcSTom Erickson krwlock_t os_lock; 51744947dcSTom Erickson 52744947dcSTom Erickson void 53744947dcSTom Erickson dmu_objset_init(void) 54744947dcSTom Erickson { 55744947dcSTom Erickson rw_init(&os_lock, NULL, RW_DEFAULT, NULL); 56744947dcSTom Erickson } 57744947dcSTom Erickson 58744947dcSTom Erickson void 59744947dcSTom Erickson dmu_objset_fini(void) 60744947dcSTom Erickson { 61744947dcSTom Erickson rw_destroy(&os_lock); 62744947dcSTom Erickson } 63744947dcSTom Erickson 64fa9e4066Sahrens spa_t * 65fa9e4066Sahrens dmu_objset_spa(objset_t *os) 66fa9e4066Sahrens { 67503ad85cSMatthew Ahrens return (os->os_spa); 68fa9e4066Sahrens } 69fa9e4066Sahrens 70fa9e4066Sahrens zilog_t * 71fa9e4066Sahrens dmu_objset_zil(objset_t *os) 72fa9e4066Sahrens { 73503ad85cSMatthew Ahrens return (os->os_zil); 74fa9e4066Sahrens } 75fa9e4066Sahrens 76fa9e4066Sahrens dsl_pool_t * 77fa9e4066Sahrens dmu_objset_pool(objset_t *os) 78fa9e4066Sahrens { 79fa9e4066Sahrens dsl_dataset_t *ds; 80fa9e4066Sahrens 81503ad85cSMatthew Ahrens if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 82fa9e4066Sahrens return (ds->ds_dir->dd_pool); 83fa9e4066Sahrens else 84503ad85cSMatthew Ahrens return (spa_get_dsl(os->os_spa)); 85fa9e4066Sahrens } 86fa9e4066Sahrens 87fa9e4066Sahrens dsl_dataset_t * 88fa9e4066Sahrens dmu_objset_ds(objset_t *os) 89fa9e4066Sahrens { 90503ad85cSMatthew Ahrens return (os->os_dsl_dataset); 91fa9e4066Sahrens } 92fa9e4066Sahrens 93fa9e4066Sahrens dmu_objset_type_t 94fa9e4066Sahrens dmu_objset_type(objset_t *os) 95fa9e4066Sahrens { 96503ad85cSMatthew Ahrens return (os->os_phys->os_type); 97fa9e4066Sahrens } 98fa9e4066Sahrens 99fa9e4066Sahrens void 100fa9e4066Sahrens dmu_objset_name(objset_t *os, char *buf) 101fa9e4066Sahrens { 102503ad85cSMatthew Ahrens dsl_dataset_name(os->os_dsl_dataset, buf); 103fa9e4066Sahrens } 104fa9e4066Sahrens 105fa9e4066Sahrens uint64_t 106fa9e4066Sahrens dmu_objset_id(objset_t *os) 107fa9e4066Sahrens { 108503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 109fa9e4066Sahrens 110fa9e4066Sahrens return (ds ? ds->ds_object : 0); 111fa9e4066Sahrens } 112fa9e4066Sahrens 11355da60b9SMark J Musante uint64_t 11455da60b9SMark J Musante dmu_objset_syncprop(objset_t *os) 11555da60b9SMark J Musante { 11655da60b9SMark J Musante return (os->os_sync); 11755da60b9SMark J Musante } 11855da60b9SMark J Musante 119e09fa4daSNeil Perrin uint64_t 120e09fa4daSNeil Perrin dmu_objset_logbias(objset_t *os) 121e09fa4daSNeil Perrin { 122e09fa4daSNeil Perrin return (os->os_logbias); 123e09fa4daSNeil Perrin } 124e09fa4daSNeil Perrin 125fa9e4066Sahrens static void 126fa9e4066Sahrens checksum_changed_cb(void *arg, uint64_t newval) 127fa9e4066Sahrens { 128503ad85cSMatthew Ahrens objset_t *os = arg; 129fa9e4066Sahrens 130fa9e4066Sahrens /* 131fa9e4066Sahrens * Inheritance should have been done by now. 132fa9e4066Sahrens */ 133fa9e4066Sahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 134fa9e4066Sahrens 135503ad85cSMatthew Ahrens os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 136fa9e4066Sahrens } 137fa9e4066Sahrens 138fa9e4066Sahrens static void 139fa9e4066Sahrens compression_changed_cb(void *arg, uint64_t newval) 140fa9e4066Sahrens { 141503ad85cSMatthew Ahrens objset_t *os = arg; 142fa9e4066Sahrens 143fa9e4066Sahrens /* 144fa9e4066Sahrens * Inheritance and range checking should have been done by now. 145fa9e4066Sahrens */ 146fa9e4066Sahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 147fa9e4066Sahrens 148503ad85cSMatthew Ahrens os->os_compress = zio_compress_select(newval, ZIO_COMPRESS_ON_VALUE); 149fa9e4066Sahrens } 150fa9e4066Sahrens 151d0ad202dSahrens static void 152d0ad202dSahrens copies_changed_cb(void *arg, uint64_t newval) 153d0ad202dSahrens { 154503ad85cSMatthew Ahrens objset_t *os = arg; 155d0ad202dSahrens 156d0ad202dSahrens /* 157d0ad202dSahrens * Inheritance and range checking should have been done by now. 158d0ad202dSahrens */ 159d0ad202dSahrens ASSERT(newval > 0); 160503ad85cSMatthew Ahrens ASSERT(newval <= spa_max_replication(os->os_spa)); 161d0ad202dSahrens 162503ad85cSMatthew Ahrens os->os_copies = newval; 163d0ad202dSahrens } 164d0ad202dSahrens 165b24ab676SJeff Bonwick static void 166b24ab676SJeff Bonwick dedup_changed_cb(void *arg, uint64_t newval) 167b24ab676SJeff Bonwick { 168b24ab676SJeff Bonwick objset_t *os = arg; 169b24ab676SJeff Bonwick spa_t *spa = os->os_spa; 170b24ab676SJeff Bonwick enum zio_checksum checksum; 171b24ab676SJeff Bonwick 172b24ab676SJeff Bonwick /* 173b24ab676SJeff Bonwick * Inheritance should have been done by now. 174b24ab676SJeff Bonwick */ 175b24ab676SJeff Bonwick ASSERT(newval != ZIO_CHECKSUM_INHERIT); 176b24ab676SJeff Bonwick 177b24ab676SJeff Bonwick checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 178b24ab676SJeff Bonwick 179b24ab676SJeff Bonwick os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 180b24ab676SJeff Bonwick os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 181b24ab676SJeff Bonwick } 182b24ab676SJeff Bonwick 1833baa08fcSek static void 1843baa08fcSek primary_cache_changed_cb(void *arg, uint64_t newval) 1853baa08fcSek { 186503ad85cSMatthew Ahrens objset_t *os = arg; 1873baa08fcSek 1883baa08fcSek /* 1893baa08fcSek * Inheritance and range checking should have been done by now. 1903baa08fcSek */ 1913baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1923baa08fcSek newval == ZFS_CACHE_METADATA); 1933baa08fcSek 194503ad85cSMatthew Ahrens os->os_primary_cache = newval; 1953baa08fcSek } 1963baa08fcSek 1973baa08fcSek static void 1983baa08fcSek secondary_cache_changed_cb(void *arg, uint64_t newval) 1993baa08fcSek { 200503ad85cSMatthew Ahrens objset_t *os = arg; 2013baa08fcSek 2023baa08fcSek /* 2033baa08fcSek * Inheritance and range checking should have been done by now. 2043baa08fcSek */ 2053baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 2063baa08fcSek newval == ZFS_CACHE_METADATA); 2073baa08fcSek 208503ad85cSMatthew Ahrens os->os_secondary_cache = newval; 2093baa08fcSek } 2103baa08fcSek 21155da60b9SMark J Musante static void 21255da60b9SMark J Musante sync_changed_cb(void *arg, uint64_t newval) 21355da60b9SMark J Musante { 21455da60b9SMark J Musante objset_t *os = arg; 21555da60b9SMark J Musante 21655da60b9SMark J Musante /* 21755da60b9SMark J Musante * Inheritance and range checking should have been done by now. 21855da60b9SMark J Musante */ 21955da60b9SMark J Musante ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS || 22055da60b9SMark J Musante newval == ZFS_SYNC_DISABLED); 22155da60b9SMark J Musante 22255da60b9SMark J Musante os->os_sync = newval; 22355da60b9SMark J Musante if (os->os_zil) 22455da60b9SMark J Musante zil_set_sync(os->os_zil, newval); 22555da60b9SMark J Musante } 22655da60b9SMark J Musante 227e09fa4daSNeil Perrin static void 228e09fa4daSNeil Perrin logbias_changed_cb(void *arg, uint64_t newval) 229e09fa4daSNeil Perrin { 230e09fa4daSNeil Perrin objset_t *os = arg; 231e09fa4daSNeil Perrin 232e09fa4daSNeil Perrin ASSERT(newval == ZFS_LOGBIAS_LATENCY || 233e09fa4daSNeil Perrin newval == ZFS_LOGBIAS_THROUGHPUT); 234e09fa4daSNeil Perrin os->os_logbias = newval; 235e09fa4daSNeil Perrin if (os->os_zil) 236e09fa4daSNeil Perrin zil_set_logbias(os->os_zil, newval); 237e09fa4daSNeil Perrin } 238e09fa4daSNeil Perrin 239fa9e4066Sahrens void 240fa9e4066Sahrens dmu_objset_byteswap(void *buf, size_t size) 241fa9e4066Sahrens { 242fa9e4066Sahrens objset_phys_t *osp = buf; 243fa9e4066Sahrens 24414843421SMatthew Ahrens ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 245fa9e4066Sahrens dnode_byteswap(&osp->os_meta_dnode); 246fa9e4066Sahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 247fa9e4066Sahrens osp->os_type = BSWAP_64(osp->os_type); 24814843421SMatthew Ahrens osp->os_flags = BSWAP_64(osp->os_flags); 24914843421SMatthew Ahrens if (size == sizeof (objset_phys_t)) { 25014843421SMatthew Ahrens dnode_byteswap(&osp->os_userused_dnode); 25114843421SMatthew Ahrens dnode_byteswap(&osp->os_groupused_dnode); 25214843421SMatthew Ahrens } 253fa9e4066Sahrens } 254fa9e4066Sahrens 255ea8dc4b6Seschrock int 256ea8dc4b6Seschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 257503ad85cSMatthew Ahrens objset_t **osp) 258fa9e4066Sahrens { 259503ad85cSMatthew Ahrens objset_t *os; 260088f3894Sahrens int i, err; 261fa9e4066Sahrens 26291ebeef5Sahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 26391ebeef5Sahrens 264503ad85cSMatthew Ahrens os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 265503ad85cSMatthew Ahrens os->os_dsl_dataset = ds; 266503ad85cSMatthew Ahrens os->os_spa = spa; 267503ad85cSMatthew Ahrens os->os_rootbp = bp; 268503ad85cSMatthew Ahrens if (!BP_IS_HOLE(os->os_rootbp)) { 26913506d1eSmaybee uint32_t aflags = ARC_WAIT; 270ea8dc4b6Seschrock zbookmark_t zb; 271b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 272b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 273b24ab676SJeff Bonwick 274503ad85cSMatthew Ahrens if (DMU_OS_IS_L2CACHEABLE(os)) 2753baa08fcSek aflags |= ARC_L2CACHE; 276ea8dc4b6Seschrock 277503ad85cSMatthew Ahrens dprintf_bp(os->os_rootbp, "reading %s", ""); 278088f3894Sahrens /* 2793f9d6ad7SLin Ling * XXX when bprewrite scrub can change the bp, 280088f3894Sahrens * and this is called from dmu_objset_open_ds_os, the bp 281088f3894Sahrens * could change, and we'll need a lock. 282088f3894Sahrens */ 2833f9d6ad7SLin Ling err = dsl_read_nolock(NULL, spa, os->os_rootbp, 284503ad85cSMatthew Ahrens arc_getbuf_func, &os->os_phys_buf, 28513506d1eSmaybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 286ea8dc4b6Seschrock if (err) { 287503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 288b87f3af3Sperrin /* convert checksum errors into IO errors */ 289b87f3af3Sperrin if (err == ECKSUM) 290b87f3af3Sperrin err = EIO; 291ea8dc4b6Seschrock return (err); 292ea8dc4b6Seschrock } 29314843421SMatthew Ahrens 29414843421SMatthew Ahrens /* Increase the blocksize if we are permitted. */ 29514843421SMatthew Ahrens if (spa_version(spa) >= SPA_VERSION_USERSPACE && 296503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 29714843421SMatthew Ahrens arc_buf_t *buf = arc_buf_alloc(spa, 298503ad85cSMatthew Ahrens sizeof (objset_phys_t), &os->os_phys_buf, 29914843421SMatthew Ahrens ARC_BUFC_METADATA); 30014843421SMatthew Ahrens bzero(buf->b_data, sizeof (objset_phys_t)); 301503ad85cSMatthew Ahrens bcopy(os->os_phys_buf->b_data, buf->b_data, 302503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf)); 303503ad85cSMatthew Ahrens (void) arc_buf_remove_ref(os->os_phys_buf, 304503ad85cSMatthew Ahrens &os->os_phys_buf); 305503ad85cSMatthew Ahrens os->os_phys_buf = buf; 30614843421SMatthew Ahrens } 30714843421SMatthew Ahrens 308503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 309503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 310fa9e4066Sahrens } else { 31114843421SMatthew Ahrens int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 31214843421SMatthew Ahrens sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 313503ad85cSMatthew Ahrens os->os_phys_buf = arc_buf_alloc(spa, size, 314503ad85cSMatthew Ahrens &os->os_phys_buf, ARC_BUFC_METADATA); 315503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 316503ad85cSMatthew Ahrens bzero(os->os_phys, size); 317fa9e4066Sahrens } 318fa9e4066Sahrens 319fa9e4066Sahrens /* 320fa9e4066Sahrens * Note: the changed_cb will be called once before the register 321fa9e4066Sahrens * func returns, thus changing the checksum/compression from the 3223baa08fcSek * default (fletcher2/off). Snapshots don't need to know about 3233baa08fcSek * checksum/compression/copies. 324fa9e4066Sahrens */ 3253baa08fcSek if (ds) { 3263baa08fcSek err = dsl_prop_register(ds, "primarycache", 327503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 328d0ad202dSahrens if (err == 0) 3293baa08fcSek err = dsl_prop_register(ds, "secondarycache", 330503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 3313baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 3323baa08fcSek if (err == 0) 3333baa08fcSek err = dsl_prop_register(ds, "checksum", 334503ad85cSMatthew Ahrens checksum_changed_cb, os); 3353baa08fcSek if (err == 0) 3363baa08fcSek err = dsl_prop_register(ds, "compression", 337503ad85cSMatthew Ahrens compression_changed_cb, os); 3383baa08fcSek if (err == 0) 3393baa08fcSek err = dsl_prop_register(ds, "copies", 340503ad85cSMatthew Ahrens copies_changed_cb, os); 341b24ab676SJeff Bonwick if (err == 0) 342b24ab676SJeff Bonwick err = dsl_prop_register(ds, "dedup", 343b24ab676SJeff Bonwick dedup_changed_cb, os); 344e09fa4daSNeil Perrin if (err == 0) 345e09fa4daSNeil Perrin err = dsl_prop_register(ds, "logbias", 346e09fa4daSNeil Perrin logbias_changed_cb, os); 34755da60b9SMark J Musante if (err == 0) 34855da60b9SMark J Musante err = dsl_prop_register(ds, "sync", 34955da60b9SMark J Musante sync_changed_cb, os); 3503baa08fcSek } 351ea8dc4b6Seschrock if (err) { 352503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 353503ad85cSMatthew Ahrens &os->os_phys_buf) == 1); 354503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 355ea8dc4b6Seschrock return (err); 356ea8dc4b6Seschrock } 35799653d4eSeschrock } else if (ds == NULL) { 358fa9e4066Sahrens /* It's the meta-objset. */ 359503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 360503ad85cSMatthew Ahrens os->os_compress = ZIO_COMPRESS_LZJB; 361503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 362b24ab676SJeff Bonwick os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 363b24ab676SJeff Bonwick os->os_dedup_verify = 0; 364b24ab676SJeff Bonwick os->os_logbias = 0; 36555da60b9SMark J Musante os->os_sync = 0; 366503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 367503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 368fa9e4066Sahrens } 369fa9e4066Sahrens 370*6e0cbcaaSMatthew Ahrens if (ds == NULL || !dsl_dataset_is_snapshot(ds)) 371*6e0cbcaaSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 372503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 373fa9e4066Sahrens 374fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 375503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 376fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 377503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 378fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 379fa9e4066Sahrens } 380503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 381fa9e4066Sahrens offsetof(dnode_t, dn_link)); 382503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 383fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 384fa9e4066Sahrens 385503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 386503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 387503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 388503ad85cSMatthew Ahrens 389744947dcSTom Erickson DMU_META_DNODE(os) = dnode_special_open(os, 390744947dcSTom Erickson &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT, 391744947dcSTom Erickson &os->os_meta_dnode); 392503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 393744947dcSTom Erickson DMU_USERUSED_DNODE(os) = dnode_special_open(os, 394744947dcSTom Erickson &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT, 395744947dcSTom Erickson &os->os_userused_dnode); 396744947dcSTom Erickson DMU_GROUPUSED_DNODE(os) = dnode_special_open(os, 397744947dcSTom Erickson &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT, 398744947dcSTom Erickson &os->os_groupused_dnode); 39914843421SMatthew Ahrens } 400fa9e4066Sahrens 40191ebeef5Sahrens /* 40291ebeef5Sahrens * We should be the only thread trying to do this because we 40391ebeef5Sahrens * have ds_opening_lock 40491ebeef5Sahrens */ 40591ebeef5Sahrens if (ds) { 406503ad85cSMatthew Ahrens mutex_enter(&ds->ds_lock); 407503ad85cSMatthew Ahrens ASSERT(ds->ds_objset == NULL); 408503ad85cSMatthew Ahrens ds->ds_objset = os; 409503ad85cSMatthew Ahrens mutex_exit(&ds->ds_lock); 410fa9e4066Sahrens } 411fa9e4066Sahrens 412503ad85cSMatthew Ahrens *osp = os; 413ea8dc4b6Seschrock return (0); 414fa9e4066Sahrens } 415fa9e4066Sahrens 416503ad85cSMatthew Ahrens int 417503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 4183cb34c60Sahrens { 419503ad85cSMatthew Ahrens int err = 0; 4203cb34c60Sahrens 4213cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 422503ad85cSMatthew Ahrens *osp = ds->ds_objset; 423503ad85cSMatthew Ahrens if (*osp == NULL) { 4243cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 425503ad85cSMatthew Ahrens ds, &ds->ds_phys->ds_bp, osp); 4263cb34c60Sahrens } 4273cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 428503ad85cSMatthew Ahrens return (err); 4293cb34c60Sahrens } 4303cb34c60Sahrens 431503ad85cSMatthew Ahrens /* called from zpl */ 4323cb34c60Sahrens int 433503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 4343cb34c60Sahrens { 435503ad85cSMatthew Ahrens dsl_dataset_t *ds; 4363cb34c60Sahrens int err; 4373cb34c60Sahrens 438503ad85cSMatthew Ahrens err = dsl_dataset_hold(name, tag, &ds); 4393cb34c60Sahrens if (err) 440503ad85cSMatthew Ahrens return (err); 441503ad85cSMatthew Ahrens 442503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 443503ad85cSMatthew Ahrens if (err) 444503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 445503ad85cSMatthew Ahrens 4463cb34c60Sahrens return (err); 4473cb34c60Sahrens } 4483cb34c60Sahrens 449fa9e4066Sahrens /* called from zpl */ 450fa9e4066Sahrens int 451503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 452503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 453fa9e4066Sahrens { 454f18faf3fSek dsl_dataset_t *ds; 455f18faf3fSek int err; 456fa9e4066Sahrens 457503ad85cSMatthew Ahrens err = dsl_dataset_own(name, B_FALSE, tag, &ds); 458503ad85cSMatthew Ahrens if (err) 459fa9e4066Sahrens return (err); 460fa9e4066Sahrens 461503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 4623cb34c60Sahrens if (err) { 463503ad85cSMatthew Ahrens dsl_dataset_disown(ds, tag); 464681d9761SEric Taylor } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 465503ad85cSMatthew Ahrens dmu_objset_disown(*osp, tag); 466503ad85cSMatthew Ahrens return (EINVAL); 467681d9761SEric Taylor } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 468681d9761SEric Taylor dmu_objset_disown(*osp, tag); 469681d9761SEric Taylor return (EROFS); 470fa9e4066Sahrens } 4713cb34c60Sahrens return (err); 472fa9e4066Sahrens } 473fa9e4066Sahrens 474fa9e4066Sahrens void 475503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 476fa9e4066Sahrens { 477503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 478503ad85cSMatthew Ahrens } 479503ad85cSMatthew Ahrens 480503ad85cSMatthew Ahrens void 481503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 482503ad85cSMatthew Ahrens { 483503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 484fa9e4066Sahrens } 485fa9e4066Sahrens 486436b2950Sperrin int 4871934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 488ea8dc4b6Seschrock { 489ea8dc4b6Seschrock dnode_t *dn; 490c543ec06Sahrens 491503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 492c543ec06Sahrens 493c543ec06Sahrens /* process the mdn last, since the other dnodes have holds on it */ 494744947dcSTom Erickson list_remove(&os->os_dnodes, DMU_META_DNODE(os)); 495744947dcSTom Erickson list_insert_tail(&os->os_dnodes, DMU_META_DNODE(os)); 496ea8dc4b6Seschrock 497ea8dc4b6Seschrock /* 498c543ec06Sahrens * Find the first dnode with holds. We have to do this dance 499c543ec06Sahrens * because dnode_add_ref() only works if you already have a 500c543ec06Sahrens * hold. If there are no holds then it has no dbufs so OK to 501c543ec06Sahrens * skip. 502ea8dc4b6Seschrock */ 503503ad85cSMatthew Ahrens for (dn = list_head(&os->os_dnodes); 5041934e92fSmaybee dn && !dnode_add_ref(dn, FTAG); 505503ad85cSMatthew Ahrens dn = list_next(&os->os_dnodes, dn)) 506c543ec06Sahrens continue; 507c543ec06Sahrens 508c543ec06Sahrens while (dn) { 509c543ec06Sahrens dnode_t *next_dn = dn; 510c543ec06Sahrens 511c543ec06Sahrens do { 512503ad85cSMatthew Ahrens next_dn = list_next(&os->os_dnodes, next_dn); 5131934e92fSmaybee } while (next_dn && !dnode_add_ref(next_dn, FTAG)); 514c543ec06Sahrens 515503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 5161934e92fSmaybee dnode_evict_dbufs(dn); 517c543ec06Sahrens dnode_rele(dn, FTAG); 518503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 519c543ec06Sahrens dn = next_dn; 520ea8dc4b6Seschrock } 521744947dcSTom Erickson dn = list_head(&os->os_dnodes); 522503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 523744947dcSTom Erickson return (dn != DMU_META_DNODE(os)); 524ea8dc4b6Seschrock } 525ea8dc4b6Seschrock 526fa9e4066Sahrens void 527503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 528fa9e4066Sahrens { 529503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 530fa9e4066Sahrens 531b24ab676SJeff Bonwick for (int t = 0; t < TXG_SIZE; t++) 532b24ab676SJeff Bonwick ASSERT(!dmu_objset_is_dirty(os, t)); 533fa9e4066Sahrens 5343baa08fcSek if (ds) { 5353baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 5363baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "checksum", 537503ad85cSMatthew Ahrens checksum_changed_cb, os)); 5383baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "compression", 539503ad85cSMatthew Ahrens compression_changed_cb, os)); 5403baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "copies", 541503ad85cSMatthew Ahrens copies_changed_cb, os)); 542b24ab676SJeff Bonwick VERIFY(0 == dsl_prop_unregister(ds, "dedup", 543b24ab676SJeff Bonwick dedup_changed_cb, os)); 544e09fa4daSNeil Perrin VERIFY(0 == dsl_prop_unregister(ds, "logbias", 545e09fa4daSNeil Perrin logbias_changed_cb, os)); 54655da60b9SMark J Musante VERIFY(0 == dsl_prop_unregister(ds, "sync", 54755da60b9SMark J Musante sync_changed_cb, os)); 5483baa08fcSek } 5493baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "primarycache", 550503ad85cSMatthew Ahrens primary_cache_changed_cb, os)); 5513baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "secondarycache", 552503ad85cSMatthew Ahrens secondary_cache_changed_cb, os)); 553fa9e4066Sahrens } 554fa9e4066Sahrens 5550a586ceaSMark Shellenbaum if (os->os_sa) 5560a586ceaSMark Shellenbaum sa_tear_down(os); 5570a586ceaSMark Shellenbaum 558ea8dc4b6Seschrock /* 559ea8dc4b6Seschrock * We should need only a single pass over the dnode list, since 560ea8dc4b6Seschrock * nothing can be added to the list at this point. 561ea8dc4b6Seschrock */ 562503ad85cSMatthew Ahrens (void) dmu_objset_evict_dbufs(os); 563ea8dc4b6Seschrock 564744947dcSTom Erickson dnode_special_close(&os->os_meta_dnode); 565744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)) { 566744947dcSTom Erickson dnode_special_close(&os->os_userused_dnode); 567744947dcSTom Erickson dnode_special_close(&os->os_groupused_dnode); 56814843421SMatthew Ahrens } 569503ad85cSMatthew Ahrens zil_free(os->os_zil); 570fa9e4066Sahrens 571503ad85cSMatthew Ahrens ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 57214843421SMatthew Ahrens 573503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf) == 1); 574744947dcSTom Erickson 575744947dcSTom Erickson /* 576744947dcSTom Erickson * This is a barrier to prevent the objset from going away in 577744947dcSTom Erickson * dnode_move() until we can safely ensure that the objset is still in 578744947dcSTom Erickson * use. We consider the objset valid before the barrier and invalid 579744947dcSTom Erickson * after the barrier. 580744947dcSTom Erickson */ 581744947dcSTom Erickson rw_enter(&os_lock, RW_READER); 582744947dcSTom Erickson rw_exit(&os_lock); 583744947dcSTom Erickson 584503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 585503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 586503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 587503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 588fa9e4066Sahrens } 589fa9e4066Sahrens 59071eb0538SChris Kirby timestruc_t 59171eb0538SChris Kirby dmu_objset_snap_cmtime(objset_t *os) 59271eb0538SChris Kirby { 59371eb0538SChris Kirby return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 59471eb0538SChris Kirby } 59571eb0538SChris Kirby 596fa9e4066Sahrens /* called from dsl for meta-objset */ 597503ad85cSMatthew Ahrens objset_t * 598c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 599c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 600fa9e4066Sahrens { 601503ad85cSMatthew Ahrens objset_t *os; 602fa9e4066Sahrens dnode_t *mdn; 603fa9e4066Sahrens 604fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 60591ebeef5Sahrens if (ds) 60691ebeef5Sahrens mutex_enter(&ds->ds_opening_lock); 607503ad85cSMatthew Ahrens VERIFY(0 == dmu_objset_open_impl(spa, ds, bp, &os)); 60891ebeef5Sahrens if (ds) 60991ebeef5Sahrens mutex_exit(&ds->ds_opening_lock); 610744947dcSTom Erickson mdn = DMU_META_DNODE(os); 611fa9e4066Sahrens 612fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 613fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 614fa9e4066Sahrens 615fa9e4066Sahrens /* 616fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 617fa9e4066Sahrens * later, because then we could do it in quescing context while 618fa9e4066Sahrens * we are also accessing it in open context. 619fa9e4066Sahrens * 620fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 621fa9e4066Sahrens * because the MOS is only updated in syncing context. 622fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 623fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 624fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 625fa9e4066Sahrens */ 626ea8dc4b6Seschrock if (ds != NULL) { 627ea8dc4b6Seschrock int levels = 1; 628ea8dc4b6Seschrock 629ea8dc4b6Seschrock /* 630ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 631ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 632ea8dc4b6Seschrock */ 633ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 634ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 635ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 636ea8dc4b6Seschrock levels++; 637ea8dc4b6Seschrock 638fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 639ea8dc4b6Seschrock mdn->dn_nlevels = levels; 640ea8dc4b6Seschrock } 641fa9e4066Sahrens 642fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 643fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 644fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 645503ad85cSMatthew Ahrens os->os_phys->os_type = type; 646503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 647503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 648503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 64914843421SMatthew Ahrens } 650fa9e4066Sahrens 651fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 652fa9e4066Sahrens 653503ad85cSMatthew Ahrens return (os); 654fa9e4066Sahrens } 655fa9e4066Sahrens 656fa9e4066Sahrens struct oscarg { 657ecd6cf80Smarks void (*userfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 658fa9e4066Sahrens void *userarg; 659ae46e4c7SMatthew Ahrens dsl_dataset_t *clone_origin; 660fa9e4066Sahrens const char *lastname; 661fa9e4066Sahrens dmu_objset_type_t type; 662ab04eb8eStimh uint64_t flags; 6633f9d6ad7SLin Ling cred_t *cr; 664fa9e4066Sahrens }; 665fa9e4066Sahrens 666ecd6cf80Smarks /*ARGSUSED*/ 667fa9e4066Sahrens static int 6681d452cf5Sahrens dmu_objset_create_check(void *arg1, void *arg2, dmu_tx_t *tx) 669fa9e4066Sahrens { 6701d452cf5Sahrens dsl_dir_t *dd = arg1; 6711d452cf5Sahrens struct oscarg *oa = arg2; 6721d452cf5Sahrens objset_t *mos = dd->dd_pool->dp_meta_objset; 673fa9e4066Sahrens int err; 6741d452cf5Sahrens uint64_t ddobj; 6751d452cf5Sahrens 6761d452cf5Sahrens err = zap_lookup(mos, dd->dd_phys->dd_child_dir_zapobj, 6771d452cf5Sahrens oa->lastname, sizeof (uint64_t), 1, &ddobj); 6781d452cf5Sahrens if (err != ENOENT) 6791d452cf5Sahrens return (err ? err : EEXIST); 6801d452cf5Sahrens 681ae46e4c7SMatthew Ahrens if (oa->clone_origin != NULL) { 682ae46e4c7SMatthew Ahrens /* You can't clone across pools. */ 683ae46e4c7SMatthew Ahrens if (oa->clone_origin->ds_dir->dd_pool != dd->dd_pool) 6841d452cf5Sahrens return (EXDEV); 6851d452cf5Sahrens 686ae46e4c7SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 687ae46e4c7SMatthew Ahrens if (!dsl_dataset_is_snapshot(oa->clone_origin)) 6881d452cf5Sahrens return (EINVAL); 6891d452cf5Sahrens } 690ecd6cf80Smarks 6911d452cf5Sahrens return (0); 6921d452cf5Sahrens } 6931d452cf5Sahrens 6941d452cf5Sahrens static void 6953f9d6ad7SLin Ling dmu_objset_create_sync(void *arg1, void *arg2, dmu_tx_t *tx) 6961d452cf5Sahrens { 6971d452cf5Sahrens dsl_dir_t *dd = arg1; 6981d452cf5Sahrens struct oscarg *oa = arg2; 6991d452cf5Sahrens uint64_t dsobj; 700*6e0cbcaaSMatthew Ahrens dsl_dataset_t *ds; 701*6e0cbcaaSMatthew Ahrens objset_t *os; 702fa9e4066Sahrens 703fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 704fa9e4066Sahrens 7051d452cf5Sahrens dsobj = dsl_dataset_create_sync(dd, oa->lastname, 7063f9d6ad7SLin Ling oa->clone_origin, oa->flags, oa->cr, tx); 707fa9e4066Sahrens 708*6e0cbcaaSMatthew Ahrens VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, dsobj, FTAG, &ds)); 709*6e0cbcaaSMatthew Ahrens 710ae46e4c7SMatthew Ahrens if (oa->clone_origin == NULL) { 711ae46e4c7SMatthew Ahrens blkptr_t *bp; 712fa9e4066Sahrens 713ae46e4c7SMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 714ae46e4c7SMatthew Ahrens ASSERT(BP_IS_HOLE(bp)); 715ae46e4c7SMatthew Ahrens 716503ad85cSMatthew Ahrens os = dmu_objset_create_impl(dsl_dataset_get_spa(ds), 717c717a561Smaybee ds, bp, oa->type, tx); 718fa9e4066Sahrens 719fa9e4066Sahrens if (oa->userfunc) 7203f9d6ad7SLin Ling oa->userfunc(os, oa->userarg, oa->cr, tx); 721*6e0cbcaaSMatthew Ahrens } else { 722*6e0cbcaaSMatthew Ahrens VERIFY3U(0, ==, dmu_objset_from_ds(ds, &os)); 723*6e0cbcaaSMatthew Ahrens bzero(&os->os_zil_header, sizeof (os->os_zil_header)); 724*6e0cbcaaSMatthew Ahrens dsl_dataset_dirty(ds, tx); 725fa9e4066Sahrens } 726*6e0cbcaaSMatthew Ahrens dsl_dataset_rele(ds, FTAG); 727ecd6cf80Smarks 7283f9d6ad7SLin Ling spa_history_log_internal(LOG_DS_CREATE, dd->dd_pool->dp_spa, 7293f9d6ad7SLin Ling tx, "dataset = %llu", dsobj); 730fa9e4066Sahrens } 731fa9e4066Sahrens 732fa9e4066Sahrens int 733ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 734ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 735fa9e4066Sahrens { 7361d452cf5Sahrens dsl_dir_t *pdd; 737fa9e4066Sahrens const char *tail; 738fa9e4066Sahrens int err = 0; 7391d452cf5Sahrens struct oscarg oa = { 0 }; 740fa9e4066Sahrens 7411d452cf5Sahrens ASSERT(strchr(name, '@') == NULL); 7421d452cf5Sahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 743ea8dc4b6Seschrock if (err) 744ea8dc4b6Seschrock return (err); 745fa9e4066Sahrens if (tail == NULL) { 7461d452cf5Sahrens dsl_dir_close(pdd, FTAG); 747fa9e4066Sahrens return (EEXIST); 748fa9e4066Sahrens } 749fa9e4066Sahrens 7501d452cf5Sahrens oa.userfunc = func; 7511d452cf5Sahrens oa.userarg = arg; 7521d452cf5Sahrens oa.lastname = tail; 7531d452cf5Sahrens oa.type = type; 754ab04eb8eStimh oa.flags = flags; 7553f9d6ad7SLin Ling oa.cr = CRED(); 756ecd6cf80Smarks 757ae46e4c7SMatthew Ahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 758ae46e4c7SMatthew Ahrens dmu_objset_create_sync, pdd, &oa, 5); 759ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 760ae46e4c7SMatthew Ahrens return (err); 761ae46e4c7SMatthew Ahrens } 762ae46e4c7SMatthew Ahrens 763ae46e4c7SMatthew Ahrens int 764ae46e4c7SMatthew Ahrens dmu_objset_clone(const char *name, dsl_dataset_t *clone_origin, uint64_t flags) 765ae46e4c7SMatthew Ahrens { 766ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 767ae46e4c7SMatthew Ahrens const char *tail; 768ae46e4c7SMatthew Ahrens int err = 0; 769ae46e4c7SMatthew Ahrens struct oscarg oa = { 0 }; 770ae46e4c7SMatthew Ahrens 771ae46e4c7SMatthew Ahrens ASSERT(strchr(name, '@') == NULL); 772ae46e4c7SMatthew Ahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 773ae46e4c7SMatthew Ahrens if (err) 774ae46e4c7SMatthew Ahrens return (err); 775ae46e4c7SMatthew Ahrens if (tail == NULL) { 776ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 777ae46e4c7SMatthew Ahrens return (EEXIST); 778fa9e4066Sahrens } 779ae46e4c7SMatthew Ahrens 780ae46e4c7SMatthew Ahrens oa.lastname = tail; 781ae46e4c7SMatthew Ahrens oa.clone_origin = clone_origin; 782ae46e4c7SMatthew Ahrens oa.flags = flags; 7833f9d6ad7SLin Ling oa.cr = CRED(); 784ae46e4c7SMatthew Ahrens 7851d452cf5Sahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 7861d452cf5Sahrens dmu_objset_create_sync, pdd, &oa, 5); 7871d452cf5Sahrens dsl_dir_close(pdd, FTAG); 788fa9e4066Sahrens return (err); 789fa9e4066Sahrens } 790fa9e4066Sahrens 791fa9e4066Sahrens int 792842727c2SChris Kirby dmu_objset_destroy(const char *name, boolean_t defer) 793fa9e4066Sahrens { 794503ad85cSMatthew Ahrens dsl_dataset_t *ds; 795fa9e4066Sahrens int error; 796fa9e4066Sahrens 797fa9e4066Sahrens /* 798ae46e4c7SMatthew Ahrens * dsl_dataset_destroy() can free any claimed-but-unplayed 799ae46e4c7SMatthew Ahrens * intent log, but if there is an active log, it has blocks that 800ae46e4c7SMatthew Ahrens * are allocated, but may not yet be reflected in the on-disk 801ae46e4c7SMatthew Ahrens * structure. Only the ZIL knows how to free them, so we have 802ae46e4c7SMatthew Ahrens * to call into it here. 803fa9e4066Sahrens */ 804503ad85cSMatthew Ahrens error = dsl_dataset_own(name, B_TRUE, FTAG, &ds); 805fa9e4066Sahrens if (error == 0) { 806503ad85cSMatthew Ahrens objset_t *os; 807503ad85cSMatthew Ahrens if (dmu_objset_from_ds(ds, &os) == 0) 808503ad85cSMatthew Ahrens zil_destroy(dmu_objset_zil(os), B_FALSE); 809503ad85cSMatthew Ahrens error = dsl_dataset_destroy(ds, FTAG, defer); 810ae46e4c7SMatthew Ahrens /* dsl_dataset_destroy() closes the ds. */ 811fa9e4066Sahrens } 812fa9e4066Sahrens 8133cb34c60Sahrens return (error); 814fa9e4066Sahrens } 815fa9e4066Sahrens 8161d452cf5Sahrens struct snaparg { 8171d452cf5Sahrens dsl_sync_task_group_t *dstg; 8181d452cf5Sahrens char *snapname; 8191d452cf5Sahrens char failed[MAXPATHLEN]; 820d8d780fbSMatthew Ahrens boolean_t recursive; 821*6e0cbcaaSMatthew Ahrens boolean_t needsuspend; 822ea2f5b9eSMatthew Ahrens nvlist_t *props; 8233cb34c60Sahrens }; 8243cb34c60Sahrens 825ea2f5b9eSMatthew Ahrens static int 826ea2f5b9eSMatthew Ahrens snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) 827ea2f5b9eSMatthew Ahrens { 828ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 829ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 830ea2f5b9eSMatthew Ahrens 831ea2f5b9eSMatthew Ahrens /* The props have already been checked by zfs_check_userprops(). */ 832ea2f5b9eSMatthew Ahrens 833503ad85cSMatthew Ahrens return (dsl_dataset_snapshot_check(os->os_dsl_dataset, 834ea2f5b9eSMatthew Ahrens sn->snapname, tx)); 835ea2f5b9eSMatthew Ahrens } 836ea2f5b9eSMatthew Ahrens 837ea2f5b9eSMatthew Ahrens static void 8383f9d6ad7SLin Ling snapshot_sync(void *arg1, void *arg2, dmu_tx_t *tx) 839ea2f5b9eSMatthew Ahrens { 840ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 841503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 842ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 843ea2f5b9eSMatthew Ahrens 8443f9d6ad7SLin Ling dsl_dataset_snapshot_sync(ds, sn->snapname, tx); 845ea2f5b9eSMatthew Ahrens 84692241e0bSTom Erickson if (sn->props) { 84792241e0bSTom Erickson dsl_props_arg_t pa; 84892241e0bSTom Erickson pa.pa_props = sn->props; 84992241e0bSTom Erickson pa.pa_source = ZPROP_SRC_LOCAL; 8503f9d6ad7SLin Ling dsl_props_set_sync(ds->ds_prev, &pa, tx); 85192241e0bSTom Erickson } 852ea2f5b9eSMatthew Ahrens } 8531d452cf5Sahrens 8541d452cf5Sahrens static int 855fd136879SMatthew Ahrens dmu_objset_snapshot_one(const char *name, void *arg) 8561d452cf5Sahrens { 8571d452cf5Sahrens struct snaparg *sn = arg; 8581d452cf5Sahrens objset_t *os; 8591d452cf5Sahrens int err; 860d8d780fbSMatthew Ahrens char *cp; 861d8d780fbSMatthew Ahrens 862d8d780fbSMatthew Ahrens /* 863d8d780fbSMatthew Ahrens * If the objset starts with a '%', then ignore it unless it was 864d8d780fbSMatthew Ahrens * explicitly named (ie, not recursive). These hidden datasets 865d8d780fbSMatthew Ahrens * are always inconsistent, and by not opening them here, we can 866d8d780fbSMatthew Ahrens * avoid a race with dsl_dir_destroy_check(). 867d8d780fbSMatthew Ahrens */ 868d8d780fbSMatthew Ahrens cp = strrchr(name, '/'); 869d8d780fbSMatthew Ahrens if (cp && cp[1] == '%' && sn->recursive) 870d8d780fbSMatthew Ahrens return (0); 8711d452cf5Sahrens 8721d452cf5Sahrens (void) strcpy(sn->failed, name); 8731d452cf5Sahrens 874ecd6cf80Smarks /* 875d8d780fbSMatthew Ahrens * Check permissions if we are doing a recursive snapshot. The 876d8d780fbSMatthew Ahrens * permission checks for the starting dataset have already been 877d8d780fbSMatthew Ahrens * performed in zfs_secpolicy_snapshot() 878ecd6cf80Smarks */ 879d8d780fbSMatthew Ahrens if (sn->recursive && (err = zfs_secpolicy_snapshot_perms(name, CRED()))) 880ecd6cf80Smarks return (err); 881ecd6cf80Smarks 882503ad85cSMatthew Ahrens err = dmu_objset_hold(name, sn, &os); 8831d452cf5Sahrens if (err != 0) 8841d452cf5Sahrens return (err); 8851d452cf5Sahrens 886d8d780fbSMatthew Ahrens /* 887d8d780fbSMatthew Ahrens * If the objset is in an inconsistent state (eg, in the process 888d8d780fbSMatthew Ahrens * of being destroyed), don't snapshot it. As with %hidden 889d8d780fbSMatthew Ahrens * datasets, we return EBUSY if this name was explicitly 890d8d780fbSMatthew Ahrens * requested (ie, not recursive), and otherwise ignore it. 891d8d780fbSMatthew Ahrens */ 892503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) { 893503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 894d8d780fbSMatthew Ahrens return (sn->recursive ? 0 : EBUSY); 895f2e10be3Srm } 896f2e10be3Srm 897*6e0cbcaaSMatthew Ahrens if (sn->needsuspend) { 898*6e0cbcaaSMatthew Ahrens err = zil_suspend(dmu_objset_zil(os)); 899*6e0cbcaaSMatthew Ahrens if (err) { 900*6e0cbcaaSMatthew Ahrens dmu_objset_rele(os, sn); 901*6e0cbcaaSMatthew Ahrens return (err); 902*6e0cbcaaSMatthew Ahrens } 9031d452cf5Sahrens } 904*6e0cbcaaSMatthew Ahrens dsl_sync_task_create(sn->dstg, snapshot_check, snapshot_sync, 905*6e0cbcaaSMatthew Ahrens os, sn, 3); 906f2e10be3Srm 907*6e0cbcaaSMatthew Ahrens return (0); 9081d452cf5Sahrens } 9091d452cf5Sahrens 9101d452cf5Sahrens int 911ea2f5b9eSMatthew Ahrens dmu_objset_snapshot(char *fsname, char *snapname, 912ea2f5b9eSMatthew Ahrens nvlist_t *props, boolean_t recursive) 9131d452cf5Sahrens { 9141d452cf5Sahrens dsl_sync_task_t *dst; 915ea2f5b9eSMatthew Ahrens struct snaparg sn; 9161d452cf5Sahrens spa_t *spa; 9171d452cf5Sahrens int err; 9181d452cf5Sahrens 9191d452cf5Sahrens (void) strcpy(sn.failed, fsname); 9201d452cf5Sahrens 92140feaa91Sahrens err = spa_open(fsname, &spa, FTAG); 9221d452cf5Sahrens if (err) 9231d452cf5Sahrens return (err); 9241d452cf5Sahrens 9251d452cf5Sahrens sn.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); 9261d452cf5Sahrens sn.snapname = snapname; 927ea2f5b9eSMatthew Ahrens sn.props = props; 928d8d780fbSMatthew Ahrens sn.recursive = recursive; 929*6e0cbcaaSMatthew Ahrens sn.needsuspend = (spa_version(spa) < SPA_VERSION_FAST_SNAP); 9301d452cf5Sahrens 9310b69c2f0Sahrens if (recursive) { 9320b69c2f0Sahrens err = dmu_objset_find(fsname, 9330b69c2f0Sahrens dmu_objset_snapshot_one, &sn, DS_FIND_CHILDREN); 9340b69c2f0Sahrens } else { 9351d452cf5Sahrens err = dmu_objset_snapshot_one(fsname, &sn); 9360b69c2f0Sahrens } 9371d452cf5Sahrens 938ea2f5b9eSMatthew Ahrens if (err == 0) 939ea2f5b9eSMatthew Ahrens err = dsl_sync_task_group_wait(sn.dstg); 9401d452cf5Sahrens 9411d452cf5Sahrens for (dst = list_head(&sn.dstg->dstg_tasks); dst; 9421d452cf5Sahrens dst = list_next(&sn.dstg->dstg_tasks, dst)) { 943ea2f5b9eSMatthew Ahrens objset_t *os = dst->dst_arg1; 944503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 9451d452cf5Sahrens if (dst->dst_err) 9463cb34c60Sahrens dsl_dataset_name(ds, sn.failed); 947*6e0cbcaaSMatthew Ahrens if (sn.needsuspend) 948*6e0cbcaaSMatthew Ahrens zil_resume(dmu_objset_zil(os)); 949503ad85cSMatthew Ahrens dmu_objset_rele(os, &sn); 9503cb34c60Sahrens } 9513cb34c60Sahrens 9521d452cf5Sahrens if (err) 9531d452cf5Sahrens (void) strcpy(fsname, sn.failed); 9541d452cf5Sahrens dsl_sync_task_group_destroy(sn.dstg); 9551d452cf5Sahrens spa_close(spa, FTAG); 9561d452cf5Sahrens return (err); 9571d452cf5Sahrens } 9581d452cf5Sahrens 959fa9e4066Sahrens static void 96014843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 961fa9e4066Sahrens { 962c717a561Smaybee dnode_t *dn; 963faafa6e3Sahrens 964c717a561Smaybee while (dn = list_head(list)) { 965c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 966c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 967c717a561Smaybee /* 96814843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 96914843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 970c717a561Smaybee */ 971c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 972c717a561Smaybee ASSERT(dn->dn_zio); 973faafa6e3Sahrens 974c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 975c717a561Smaybee list_remove(list, dn); 97614843421SMatthew Ahrens 97714843421SMatthew Ahrens if (newlist) { 97814843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 97914843421SMatthew Ahrens list_insert_tail(newlist, dn); 98014843421SMatthew Ahrens } 98114843421SMatthew Ahrens 982c717a561Smaybee dnode_sync(dn, tx); 983fa9e4066Sahrens } 984fa9e4066Sahrens } 985fa9e4066Sahrens 986fa9e4066Sahrens /* ARGSUSED */ 987fa9e4066Sahrens static void 988b24ab676SJeff Bonwick dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 989fa9e4066Sahrens { 990e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 991503ad85cSMatthew Ahrens objset_t *os = arg; 992c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 993fa9e4066Sahrens 994e14bb325SJeff Bonwick ASSERT(bp == os->os_rootbp); 995e14bb325SJeff Bonwick ASSERT(BP_GET_TYPE(bp) == DMU_OT_OBJSET); 996e14bb325SJeff Bonwick ASSERT(BP_GET_LEVEL(bp) == 0); 9970a4e9518Sgw 998fa9e4066Sahrens /* 99914843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 100014843421SMatthew Ahrens * allocated in the object set (not counting the "special" 100114843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 100214843421SMatthew Ahrens * dnode and user/group accounting objects). 1003fa9e4066Sahrens */ 100414843421SMatthew Ahrens bp->blk_fill = 0; 1005e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 1006c717a561Smaybee bp->blk_fill += dnp->dn_blkptr[i].blk_fill; 1007b24ab676SJeff Bonwick } 1008b24ab676SJeff Bonwick 1009b24ab676SJeff Bonwick /* ARGSUSED */ 1010b24ab676SJeff Bonwick static void 1011b24ab676SJeff Bonwick dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 1012b24ab676SJeff Bonwick { 1013b24ab676SJeff Bonwick blkptr_t *bp = zio->io_bp; 1014b24ab676SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 1015b24ab676SJeff Bonwick objset_t *os = arg; 10160a4e9518Sgw 1017e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 1018b24ab676SJeff Bonwick ASSERT(BP_EQUAL(bp, bp_orig)); 1019e14bb325SJeff Bonwick } else { 1020b24ab676SJeff Bonwick dsl_dataset_t *ds = os->os_dsl_dataset; 1021b24ab676SJeff Bonwick dmu_tx_t *tx = os->os_synctx; 1022b24ab676SJeff Bonwick 1023b24ab676SJeff Bonwick (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 1024b24ab676SJeff Bonwick dsl_dataset_block_born(ds, bp, tx); 10250a4e9518Sgw } 1026c717a561Smaybee } 1027c717a561Smaybee 1028fa9e4066Sahrens /* called from dsl */ 1029fa9e4066Sahrens void 1030503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 1031fa9e4066Sahrens { 1032fa9e4066Sahrens int txgoff; 1033ea8dc4b6Seschrock zbookmark_t zb; 1034b24ab676SJeff Bonwick zio_prop_t zp; 1035c717a561Smaybee zio_t *zio; 1036c717a561Smaybee list_t *list; 103714843421SMatthew Ahrens list_t *newlist = NULL; 1038c717a561Smaybee dbuf_dirty_record_t *dr; 1039c717a561Smaybee 1040c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 1041fa9e4066Sahrens 1042fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 1043fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 1044fa9e4066Sahrens os->os_synctx = tx; 1045fa9e4066Sahrens 104687bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 104787bd5c1eSahrens /* 104887bd5c1eSahrens * This is the MOS. If we have upgraded, 104987bd5c1eSahrens * spa_max_replication() could change, so reset 105087bd5c1eSahrens * os_copies here. 105187bd5c1eSahrens */ 105287bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 105387bd5c1eSahrens } 105487bd5c1eSahrens 1055fa9e4066Sahrens /* 1056c717a561Smaybee * Create the root block IO 1057fa9e4066Sahrens */ 1058b24ab676SJeff Bonwick SET_BOOKMARK(&zb, os->os_dsl_dataset ? 1059b24ab676SJeff Bonwick os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 1060b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 10613f9d6ad7SLin Ling VERIFY3U(0, ==, arc_release_bp(os->os_phys_buf, &os->os_phys_buf, 10623f9d6ad7SLin Ling os->os_rootbp, os->os_spa, &zb)); 1063b24ab676SJeff Bonwick 1064b24ab676SJeff Bonwick dmu_write_policy(os, NULL, 0, 0, &zp); 1065b24ab676SJeff Bonwick 1066b24ab676SJeff Bonwick zio = arc_write(pio, os->os_spa, tx->tx_txg, 1067b24ab676SJeff Bonwick os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), &zp, 1068b24ab676SJeff Bonwick dmu_objset_write_ready, dmu_objset_write_done, os, 1069e14bb325SJeff Bonwick ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); 1070c717a561Smaybee 1071c717a561Smaybee /* 107214843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 1073c717a561Smaybee */ 1074744947dcSTom Erickson DMU_META_DNODE(os)->dn_zio = zio; 1075744947dcSTom Erickson dnode_sync(DMU_META_DNODE(os), tx); 1076c717a561Smaybee 107714843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 107814843421SMatthew Ahrens 1079744947dcSTom Erickson if (DMU_USERUSED_DNODE(os) && 1080744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) { 1081744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_zio = zio; 1082744947dcSTom Erickson dnode_sync(DMU_USERUSED_DNODE(os), tx); 1083744947dcSTom Erickson DMU_GROUPUSED_DNODE(os)->dn_zio = zio; 1084744947dcSTom Erickson dnode_sync(DMU_GROUPUSED_DNODE(os), tx); 108514843421SMatthew Ahrens } 108614843421SMatthew Ahrens 1087c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 1088fa9e4066Sahrens 108914843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 109014843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 109114843421SMatthew Ahrens /* 109214843421SMatthew Ahrens * We must create the list here because it uses the 109314843421SMatthew Ahrens * dn_dirty_link[] of this txg. 109414843421SMatthew Ahrens */ 109514843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 109614843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 109714843421SMatthew Ahrens } 109814843421SMatthew Ahrens 109914843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 110014843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1101fa9e4066Sahrens 1102744947dcSTom Erickson list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff]; 1103c717a561Smaybee while (dr = list_head(list)) { 1104c717a561Smaybee ASSERT(dr->dr_dbuf->db_level == 0); 1105c717a561Smaybee list_remove(list, dr); 1106c717a561Smaybee if (dr->dr_zio) 1107c717a561Smaybee zio_nowait(dr->dr_zio); 1108c717a561Smaybee } 1109c717a561Smaybee /* 1110c717a561Smaybee * Free intent log blocks up to this tx. 1111c717a561Smaybee */ 1112c717a561Smaybee zil_sync(os->os_zil, tx); 1113088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 1114c717a561Smaybee zio_nowait(zio); 1115fa9e4066Sahrens } 1116fa9e4066Sahrens 1117b24ab676SJeff Bonwick boolean_t 1118b24ab676SJeff Bonwick dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1119b24ab676SJeff Bonwick { 1120b24ab676SJeff Bonwick return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1121b24ab676SJeff Bonwick !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1122b24ab676SJeff Bonwick } 1123b24ab676SJeff Bonwick 11245aaeed5cSSanjeev Bagewadi boolean_t 11255aaeed5cSSanjeev Bagewadi dmu_objset_is_dirty_anywhere(objset_t *os) 11265aaeed5cSSanjeev Bagewadi { 11275aaeed5cSSanjeev Bagewadi for (int t = 0; t < TXG_SIZE; t++) 11285aaeed5cSSanjeev Bagewadi if (dmu_objset_is_dirty(os, t)) 11295aaeed5cSSanjeev Bagewadi return (B_TRUE); 11305aaeed5cSSanjeev Bagewadi return (B_FALSE); 11315aaeed5cSSanjeev Bagewadi } 11325aaeed5cSSanjeev Bagewadi 1133744947dcSTom Erickson static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 113414843421SMatthew Ahrens 113514843421SMatthew Ahrens void 113614843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 113714843421SMatthew Ahrens { 113814843421SMatthew Ahrens used_cbs[ost] = cb; 113914843421SMatthew Ahrens } 114014843421SMatthew Ahrens 114114843421SMatthew Ahrens boolean_t 1142503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 114314843421SMatthew Ahrens { 114414843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 1145744947dcSTom Erickson used_cbs[os->os_phys->os_type] != NULL && 1146744947dcSTom Erickson DMU_USERUSED_DNODE(os) != NULL); 114714843421SMatthew Ahrens } 114814843421SMatthew Ahrens 11499966ca11SMatthew Ahrens static void 11500a586ceaSMark Shellenbaum do_userquota_update(objset_t *os, uint64_t used, uint64_t flags, 11510a586ceaSMark Shellenbaum uint64_t user, uint64_t group, boolean_t subtract, dmu_tx_t *tx) 11529966ca11SMatthew Ahrens { 11530a586ceaSMark Shellenbaum if ((flags & DNODE_FLAG_USERUSED_ACCOUNTED)) { 11540a586ceaSMark Shellenbaum int64_t delta = DNODE_SIZE + used; 11559966ca11SMatthew Ahrens if (subtract) 11569966ca11SMatthew Ahrens delta = -delta; 1157c33e334fSMatthew Ahrens VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 11589966ca11SMatthew Ahrens user, delta, tx)); 1159c33e334fSMatthew Ahrens VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 11609966ca11SMatthew Ahrens group, delta, tx)); 11619966ca11SMatthew Ahrens } 11629966ca11SMatthew Ahrens } 11639966ca11SMatthew Ahrens 116414843421SMatthew Ahrens void 11650a586ceaSMark Shellenbaum dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx) 116614843421SMatthew Ahrens { 116714843421SMatthew Ahrens dnode_t *dn; 116814843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 116914843421SMatthew Ahrens 117014843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 117114843421SMatthew Ahrens 117214843421SMatthew Ahrens while (dn = list_head(list)) { 11731d8ccc7bSMark Shellenbaum int flags; 117414843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 117514843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 117614843421SMatthew Ahrens dn->dn_phys->dn_flags & 117714843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 117814843421SMatthew Ahrens 117914843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 1180744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) { 1181503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 118214843421SMatthew Ahrens DMU_USERUSED_OBJECT, 118314843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1184503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 118514843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 118614843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 118714843421SMatthew Ahrens } 118814843421SMatthew Ahrens 118914843421SMatthew Ahrens /* 11909966ca11SMatthew Ahrens * We intentionally modify the zap object even if the 11910a586ceaSMark Shellenbaum * net delta is zero. Otherwise 11929966ca11SMatthew Ahrens * the block of the zap obj could be shared between 11939966ca11SMatthew Ahrens * datasets but need to be different between them after 11949966ca11SMatthew Ahrens * a bprewrite. 119514843421SMatthew Ahrens */ 119614843421SMatthew Ahrens 11971d8ccc7bSMark Shellenbaum flags = dn->dn_id_flags; 11981d8ccc7bSMark Shellenbaum ASSERT(flags); 11991d8ccc7bSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 12000a586ceaSMark Shellenbaum do_userquota_update(os, dn->dn_oldused, dn->dn_oldflags, 12010a586ceaSMark Shellenbaum dn->dn_olduid, dn->dn_oldgid, B_TRUE, tx); 12020a586ceaSMark Shellenbaum } 12031d8ccc7bSMark Shellenbaum if (flags & DN_ID_NEW_EXIST) { 12040a586ceaSMark Shellenbaum do_userquota_update(os, DN_USED_BYTES(dn->dn_phys), 12050a586ceaSMark Shellenbaum dn->dn_phys->dn_flags, dn->dn_newuid, 12060a586ceaSMark Shellenbaum dn->dn_newgid, B_FALSE, tx); 12070a586ceaSMark Shellenbaum } 12080a586ceaSMark Shellenbaum 12091d8ccc7bSMark Shellenbaum mutex_enter(&dn->dn_mtx); 12100a586ceaSMark Shellenbaum dn->dn_oldused = 0; 12110a586ceaSMark Shellenbaum dn->dn_oldflags = 0; 12120a586ceaSMark Shellenbaum if (dn->dn_id_flags & DN_ID_NEW_EXIST) { 12130a586ceaSMark Shellenbaum dn->dn_olduid = dn->dn_newuid; 12140a586ceaSMark Shellenbaum dn->dn_oldgid = dn->dn_newgid; 12150a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 12160a586ceaSMark Shellenbaum if (dn->dn_bonuslen == 0) 12170a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 12180a586ceaSMark Shellenbaum else 12190a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 12200a586ceaSMark Shellenbaum } 122128d97a71SMark Shellenbaum dn->dn_id_flags &= ~(DN_ID_NEW_EXIST); 122214843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 122314843421SMatthew Ahrens 122414843421SMatthew Ahrens list_remove(list, dn); 122514843421SMatthew Ahrens dnode_rele(dn, list); 122614843421SMatthew Ahrens } 122714843421SMatthew Ahrens } 122814843421SMatthew Ahrens 122906e0070dSMark Shellenbaum /* 123006e0070dSMark Shellenbaum * Returns a pointer to data to find uid/gid from 123106e0070dSMark Shellenbaum * 123206e0070dSMark Shellenbaum * If a dirty record for transaction group that is syncing can't 123306e0070dSMark Shellenbaum * be found then NULL is returned. In the NULL case it is assumed 123406e0070dSMark Shellenbaum * the uid/gid aren't changing. 123506e0070dSMark Shellenbaum */ 123606e0070dSMark Shellenbaum static void * 123706e0070dSMark Shellenbaum dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx) 123806e0070dSMark Shellenbaum { 123906e0070dSMark Shellenbaum dbuf_dirty_record_t *dr, **drp; 124006e0070dSMark Shellenbaum void *data; 124106e0070dSMark Shellenbaum 124206e0070dSMark Shellenbaum if (db->db_dirtycnt == 0) 124306e0070dSMark Shellenbaum return (db->db.db_data); /* Nothing is changing */ 124406e0070dSMark Shellenbaum 124506e0070dSMark Shellenbaum for (drp = &db->db_last_dirty; (dr = *drp) != NULL; drp = &dr->dr_next) 124606e0070dSMark Shellenbaum if (dr->dr_txg == tx->tx_txg) 124706e0070dSMark Shellenbaum break; 124806e0070dSMark Shellenbaum 1249744947dcSTom Erickson if (dr == NULL) { 125006e0070dSMark Shellenbaum data = NULL; 1251744947dcSTom Erickson } else { 1252744947dcSTom Erickson dnode_t *dn; 1253744947dcSTom Erickson 1254744947dcSTom Erickson DB_DNODE_ENTER(dr->dr_dbuf); 1255744947dcSTom Erickson dn = DB_DNODE(dr->dr_dbuf); 1256744947dcSTom Erickson 1257744947dcSTom Erickson if (dn->dn_bonuslen == 0 && 1258744947dcSTom Erickson dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID) 1259744947dcSTom Erickson data = dr->dt.dl.dr_data->b_data; 1260744947dcSTom Erickson else 1261744947dcSTom Erickson data = dr->dt.dl.dr_data; 1262744947dcSTom Erickson 1263744947dcSTom Erickson DB_DNODE_EXIT(dr->dr_dbuf); 1264744947dcSTom Erickson } 1265744947dcSTom Erickson 126606e0070dSMark Shellenbaum return (data); 126706e0070dSMark Shellenbaum } 126806e0070dSMark Shellenbaum 12690a586ceaSMark Shellenbaum void 127006e0070dSMark Shellenbaum dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx) 12710a586ceaSMark Shellenbaum { 12720a586ceaSMark Shellenbaum objset_t *os = dn->dn_objset; 12730a586ceaSMark Shellenbaum void *data = NULL; 127406e0070dSMark Shellenbaum dmu_buf_impl_t *db = NULL; 12750a586ceaSMark Shellenbaum uint64_t *user, *group; 12760a586ceaSMark Shellenbaum int flags = dn->dn_id_flags; 12770a586ceaSMark Shellenbaum int error; 127806e0070dSMark Shellenbaum boolean_t have_spill = B_FALSE; 12790a586ceaSMark Shellenbaum 12800a586ceaSMark Shellenbaum if (!dmu_objset_userused_enabled(dn->dn_objset)) 12810a586ceaSMark Shellenbaum return; 12820a586ceaSMark Shellenbaum 12830a586ceaSMark Shellenbaum if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST| 12840a586ceaSMark Shellenbaum DN_ID_CHKED_SPILL))) 12850a586ceaSMark Shellenbaum return; 12860a586ceaSMark Shellenbaum 12870a586ceaSMark Shellenbaum if (before && dn->dn_bonuslen != 0) 12880a586ceaSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 128906e0070dSMark Shellenbaum else if (!before && dn->dn_bonuslen != 0) { 129006e0070dSMark Shellenbaum if (dn->dn_bonus) { 129106e0070dSMark Shellenbaum db = dn->dn_bonus; 129206e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 129306e0070dSMark Shellenbaum data = dmu_objset_userquota_find_data(db, tx); 129406e0070dSMark Shellenbaum } else { 129506e0070dSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 129606e0070dSMark Shellenbaum } 129706e0070dSMark Shellenbaum } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) { 12980a586ceaSMark Shellenbaum int rf = 0; 12990a586ceaSMark Shellenbaum 13000a586ceaSMark Shellenbaum if (RW_WRITE_HELD(&dn->dn_struct_rwlock)) 13010a586ceaSMark Shellenbaum rf |= DB_RF_HAVESTRUCT; 13021d8ccc7bSMark Shellenbaum error = dmu_spill_hold_by_dnode(dn, 13031d8ccc7bSMark Shellenbaum rf | DB_RF_MUST_SUCCEED, 130406e0070dSMark Shellenbaum FTAG, (dmu_buf_t **)&db); 13050a586ceaSMark Shellenbaum ASSERT(error == 0); 130606e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 130706e0070dSMark Shellenbaum data = (before) ? db->db.db_data : 130806e0070dSMark Shellenbaum dmu_objset_userquota_find_data(db, tx); 130906e0070dSMark Shellenbaum have_spill = B_TRUE; 13100a586ceaSMark Shellenbaum } else { 13110a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 13120a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 13130a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 13140a586ceaSMark Shellenbaum return; 13150a586ceaSMark Shellenbaum } 13160a586ceaSMark Shellenbaum 13170a586ceaSMark Shellenbaum if (before) { 131806e0070dSMark Shellenbaum ASSERT(data); 13190a586ceaSMark Shellenbaum user = &dn->dn_olduid; 13200a586ceaSMark Shellenbaum group = &dn->dn_oldgid; 132106e0070dSMark Shellenbaum } else if (data) { 13220a586ceaSMark Shellenbaum user = &dn->dn_newuid; 13230a586ceaSMark Shellenbaum group = &dn->dn_newgid; 13240a586ceaSMark Shellenbaum } 13250a586ceaSMark Shellenbaum 132606e0070dSMark Shellenbaum /* 132706e0070dSMark Shellenbaum * Must always call the callback in case the object 132806e0070dSMark Shellenbaum * type has changed and that type isn't an object type to track 132906e0070dSMark Shellenbaum */ 13300a586ceaSMark Shellenbaum error = used_cbs[os->os_phys->os_type](dn->dn_bonustype, data, 13310a586ceaSMark Shellenbaum user, group); 13320a586ceaSMark Shellenbaum 133306e0070dSMark Shellenbaum /* 133406e0070dSMark Shellenbaum * Preserve existing uid/gid when the callback can't determine 133506e0070dSMark Shellenbaum * what the new uid/gid are and the callback returned EEXIST. 133606e0070dSMark Shellenbaum * The EEXIST error tells us to just use the existing uid/gid. 133706e0070dSMark Shellenbaum * If we don't know what the old values are then just assign 133806e0070dSMark Shellenbaum * them to 0, since that is a new file being created. 133906e0070dSMark Shellenbaum */ 134006e0070dSMark Shellenbaum if (!before && data == NULL && error == EEXIST) { 134106e0070dSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 134206e0070dSMark Shellenbaum dn->dn_newuid = dn->dn_olduid; 134306e0070dSMark Shellenbaum dn->dn_newgid = dn->dn_oldgid; 134406e0070dSMark Shellenbaum } else { 134506e0070dSMark Shellenbaum dn->dn_newuid = 0; 134606e0070dSMark Shellenbaum dn->dn_newgid = 0; 134706e0070dSMark Shellenbaum } 134806e0070dSMark Shellenbaum error = 0; 134906e0070dSMark Shellenbaum } 135006e0070dSMark Shellenbaum 135106e0070dSMark Shellenbaum if (db) 135206e0070dSMark Shellenbaum mutex_exit(&db->db_mtx); 135306e0070dSMark Shellenbaum 13540a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 13550a586ceaSMark Shellenbaum if (error == 0 && before) 13560a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 13570a586ceaSMark Shellenbaum if (error == 0 && !before) 13580a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_NEW_EXIST; 13590a586ceaSMark Shellenbaum 136006e0070dSMark Shellenbaum if (have_spill) { 13610a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 13620a586ceaSMark Shellenbaum } else { 13630a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 13640a586ceaSMark Shellenbaum } 13650a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 136606e0070dSMark Shellenbaum if (have_spill) 136706e0070dSMark Shellenbaum dmu_buf_rele((dmu_buf_t *)db, FTAG); 13680a586ceaSMark Shellenbaum } 13690a586ceaSMark Shellenbaum 137014843421SMatthew Ahrens boolean_t 137114843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 137214843421SMatthew Ahrens { 1373503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 137414843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 137514843421SMatthew Ahrens } 137614843421SMatthew Ahrens 137714843421SMatthew Ahrens int 137814843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 137914843421SMatthew Ahrens { 138014843421SMatthew Ahrens uint64_t obj; 138114843421SMatthew Ahrens int err = 0; 138214843421SMatthew Ahrens 138314843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 138414843421SMatthew Ahrens return (0); 1385503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 138614843421SMatthew Ahrens return (ENOTSUP); 138714843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 138814843421SMatthew Ahrens return (EINVAL); 138914843421SMatthew Ahrens 139014843421SMatthew Ahrens /* 139114843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 139214843421SMatthew Ahrens * synced out and now accounted. If this is called 139314843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 139414843421SMatthew Ahrens * that's fine, since we track each object's accounted state 139514843421SMatthew Ahrens * independently. 139614843421SMatthew Ahrens */ 139714843421SMatthew Ahrens 139814843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 139968857716SLin Ling dmu_tx_t *tx; 140014843421SMatthew Ahrens dmu_buf_t *db; 140114843421SMatthew Ahrens int objerr; 140214843421SMatthew Ahrens 140314843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 140414843421SMatthew Ahrens return (EINTR); 140514843421SMatthew Ahrens 140614843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 140714843421SMatthew Ahrens if (objerr) 140814843421SMatthew Ahrens continue; 140968857716SLin Ling tx = dmu_tx_create(os); 141014843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 141114843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 141214843421SMatthew Ahrens if (objerr) { 141314843421SMatthew Ahrens dmu_tx_abort(tx); 141414843421SMatthew Ahrens continue; 141514843421SMatthew Ahrens } 141614843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 141714843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 141814843421SMatthew Ahrens dmu_tx_commit(tx); 141914843421SMatthew Ahrens } 142014843421SMatthew Ahrens 1421503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 142214843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 142314843421SMatthew Ahrens return (0); 142414843421SMatthew Ahrens } 142514843421SMatthew Ahrens 1426fa9e4066Sahrens void 1427a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1428a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1429fa9e4066Sahrens { 1430503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1431a2eea2e1Sahrens usedobjsp, availobjsp); 1432a2eea2e1Sahrens } 1433a2eea2e1Sahrens 1434a2eea2e1Sahrens uint64_t 1435a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1436a2eea2e1Sahrens { 1437503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1438a2eea2e1Sahrens } 1439a2eea2e1Sahrens 1440a2eea2e1Sahrens void 1441a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1442a2eea2e1Sahrens { 1443503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1444503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1445503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1446a2eea2e1Sahrens } 1447a2eea2e1Sahrens 1448a2eea2e1Sahrens void 1449a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1450a2eea2e1Sahrens { 1451503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1452503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1453a2eea2e1Sahrens 1454503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1455503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1456a2eea2e1Sahrens 1457a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1458503ad85cSMatthew Ahrens os->os_phys->os_type); 145914843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 146014843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1461fa9e4066Sahrens } 1462fa9e4066Sahrens 1463fa9e4066Sahrens int 1464fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1465fa9e4066Sahrens { 1466503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1467503ad85cSMatthew Ahrens return (dsl_dataset_is_snapshot(os->os_dsl_dataset)); 1468fa9e4066Sahrens else 1469fa9e4066Sahrens return (B_FALSE); 1470fa9e4066Sahrens } 1471fa9e4066Sahrens 1472ab04eb8eStimh int 1473ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1474ab04eb8eStimh boolean_t *conflict) 1475ab04eb8eStimh { 1476503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1477ab04eb8eStimh uint64_t ignored; 1478ab04eb8eStimh 1479ab04eb8eStimh if (ds->ds_phys->ds_snapnames_zapobj == 0) 1480ab04eb8eStimh return (ENOENT); 1481ab04eb8eStimh 1482ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1483ab04eb8eStimh ds->ds_phys->ds_snapnames_zapobj, name, 8, 1, &ignored, MT_FIRST, 1484ab04eb8eStimh real, maxlen, conflict)); 1485ab04eb8eStimh } 1486ab04eb8eStimh 1487fa9e4066Sahrens int 1488fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1489b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1490fa9e4066Sahrens { 1491503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1492fa9e4066Sahrens zap_cursor_t cursor; 1493fa9e4066Sahrens zap_attribute_t attr; 1494fa9e4066Sahrens 1495fa9e4066Sahrens if (ds->ds_phys->ds_snapnames_zapobj == 0) 1496fa9e4066Sahrens return (ENOENT); 1497fa9e4066Sahrens 1498fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1499fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1500fa9e4066Sahrens ds->ds_phys->ds_snapnames_zapobj, *offp); 1501fa9e4066Sahrens 150287e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 150387e5029aSahrens zap_cursor_fini(&cursor); 150487e5029aSahrens return (ENOENT); 150587e5029aSahrens } 150687e5029aSahrens 150787e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 150887e5029aSahrens zap_cursor_fini(&cursor); 150987e5029aSahrens return (ENAMETOOLONG); 151087e5029aSahrens } 151187e5029aSahrens 151287e5029aSahrens (void) strcpy(name, attr.za_name); 151387e5029aSahrens if (idp) 151487e5029aSahrens *idp = attr.za_first_integer; 1515b38f0970Sck if (case_conflict) 1516b38f0970Sck *case_conflict = attr.za_normalization_conflict; 151787e5029aSahrens zap_cursor_advance(&cursor); 151887e5029aSahrens *offp = zap_cursor_serialize(&cursor); 151987e5029aSahrens zap_cursor_fini(&cursor); 152087e5029aSahrens 152187e5029aSahrens return (0); 152287e5029aSahrens } 152387e5029aSahrens 152487e5029aSahrens int 152587e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 152687e5029aSahrens uint64_t *idp, uint64_t *offp) 152787e5029aSahrens { 1528503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 152987e5029aSahrens zap_cursor_t cursor; 153087e5029aSahrens zap_attribute_t attr; 153187e5029aSahrens 153287e5029aSahrens /* there is no next dir on a snapshot! */ 1533503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 153487e5029aSahrens dd->dd_phys->dd_head_dataset_obj) 1535fa9e4066Sahrens return (ENOENT); 1536fa9e4066Sahrens 153787e5029aSahrens zap_cursor_init_serialized(&cursor, 153887e5029aSahrens dd->dd_pool->dp_meta_objset, 153987e5029aSahrens dd->dd_phys->dd_child_dir_zapobj, *offp); 154087e5029aSahrens 154187e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 154287e5029aSahrens zap_cursor_fini(&cursor); 154387e5029aSahrens return (ENOENT); 154487e5029aSahrens } 154587e5029aSahrens 154687e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 154787e5029aSahrens zap_cursor_fini(&cursor); 1548fa9e4066Sahrens return (ENAMETOOLONG); 154987e5029aSahrens } 1550fa9e4066Sahrens 1551fa9e4066Sahrens (void) strcpy(name, attr.za_name); 155287e5029aSahrens if (idp) 155387e5029aSahrens *idp = attr.za_first_integer; 1554fa9e4066Sahrens zap_cursor_advance(&cursor); 1555fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 155687e5029aSahrens zap_cursor_fini(&cursor); 1557fa9e4066Sahrens 1558fa9e4066Sahrens return (0); 1559fa9e4066Sahrens } 1560fa9e4066Sahrens 1561088f3894Sahrens struct findarg { 1562fd136879SMatthew Ahrens int (*func)(const char *, void *); 1563088f3894Sahrens void *arg; 1564088f3894Sahrens }; 1565088f3894Sahrens 1566088f3894Sahrens /* ARGSUSED */ 1567088f3894Sahrens static int 1568088f3894Sahrens findfunc(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg) 1569088f3894Sahrens { 1570088f3894Sahrens struct findarg *fa = arg; 1571fd136879SMatthew Ahrens return (fa->func(dsname, fa->arg)); 1572088f3894Sahrens } 1573088f3894Sahrens 1574fa9e4066Sahrens /* 1575fa9e4066Sahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 1576088f3894Sahrens * Perhaps change all callers to use dmu_objset_find_spa()? 1577fa9e4066Sahrens */ 15781d452cf5Sahrens int 1579fd136879SMatthew Ahrens dmu_objset_find(char *name, int func(const char *, void *), void *arg, 1580fd136879SMatthew Ahrens int flags) 1581088f3894Sahrens { 1582088f3894Sahrens struct findarg fa; 1583088f3894Sahrens fa.func = func; 1584088f3894Sahrens fa.arg = arg; 1585088f3894Sahrens return (dmu_objset_find_spa(NULL, name, findfunc, &fa, flags)); 1586088f3894Sahrens } 1587088f3894Sahrens 1588088f3894Sahrens /* 1589088f3894Sahrens * Find all objsets under name, call func on each 1590088f3894Sahrens */ 1591088f3894Sahrens int 1592088f3894Sahrens dmu_objset_find_spa(spa_t *spa, const char *name, 1593088f3894Sahrens int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags) 1594fa9e4066Sahrens { 1595fa9e4066Sahrens dsl_dir_t *dd; 1596088f3894Sahrens dsl_pool_t *dp; 1597088f3894Sahrens dsl_dataset_t *ds; 1598fa9e4066Sahrens zap_cursor_t zc; 1599b7661cccSmmusante zap_attribute_t *attr; 1600fa9e4066Sahrens char *child; 1601088f3894Sahrens uint64_t thisobj; 1602088f3894Sahrens int err; 1603fa9e4066Sahrens 1604088f3894Sahrens if (name == NULL) 1605088f3894Sahrens name = spa_name(spa); 1606088f3894Sahrens err = dsl_dir_open_spa(spa, name, FTAG, &dd, NULL); 1607ea8dc4b6Seschrock if (err) 16081d452cf5Sahrens return (err); 1609fa9e4066Sahrens 1610088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1611088f3894Sahrens if (dd->dd_myname[0] == '$') { 1612088f3894Sahrens dsl_dir_close(dd, FTAG); 1613088f3894Sahrens return (0); 1614088f3894Sahrens } 1615088f3894Sahrens 1616088f3894Sahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 1617b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1618088f3894Sahrens dp = dd->dd_pool; 1619fa9e4066Sahrens 1620fa9e4066Sahrens /* 1621fa9e4066Sahrens * Iterate over all children. 1622fa9e4066Sahrens */ 16230b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1624088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 16250b69c2f0Sahrens dd->dd_phys->dd_child_dir_zapobj); 1626b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 16270b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 1628b7661cccSmmusante ASSERT(attr->za_integer_length == sizeof (uint64_t)); 1629b7661cccSmmusante ASSERT(attr->za_num_integers == 1); 1630fa9e4066Sahrens 1631486ae710SMatthew Ahrens child = kmem_asprintf("%s/%s", name, attr->za_name); 1632088f3894Sahrens err = dmu_objset_find_spa(spa, child, func, arg, flags); 1633486ae710SMatthew Ahrens strfree(child); 16340b69c2f0Sahrens if (err) 16350b69c2f0Sahrens break; 16360b69c2f0Sahrens } 16370b69c2f0Sahrens zap_cursor_fini(&zc); 16381d452cf5Sahrens 16390b69c2f0Sahrens if (err) { 16400b69c2f0Sahrens dsl_dir_close(dd, FTAG); 1641b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 16420b69c2f0Sahrens return (err); 16430b69c2f0Sahrens } 1644fa9e4066Sahrens } 1645fa9e4066Sahrens 1646fa9e4066Sahrens /* 1647fa9e4066Sahrens * Iterate over all snapshots. 1648fa9e4066Sahrens */ 1649088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1650088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1651088f3894Sahrens rw_enter(&dp->dp_config_rwlock, RW_READER); 1652088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1653088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1654088f3894Sahrens rw_exit(&dp->dp_config_rwlock); 1655088f3894Sahrens 1656088f3894Sahrens if (err == 0) { 1657088f3894Sahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 1658088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1659088f3894Sahrens 1660088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1661088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1662088f3894Sahrens (void) zap_cursor_advance(&zc)) { 1663088f3894Sahrens ASSERT(attr->za_integer_length == 1664088f3894Sahrens sizeof (uint64_t)); 1665088f3894Sahrens ASSERT(attr->za_num_integers == 1); 1666088f3894Sahrens 1667486ae710SMatthew Ahrens child = kmem_asprintf("%s@%s", 1668486ae710SMatthew Ahrens name, attr->za_name); 1669088f3894Sahrens err = func(spa, attr->za_first_integer, 1670088f3894Sahrens child, arg); 1671486ae710SMatthew Ahrens strfree(child); 1672088f3894Sahrens if (err) 1673088f3894Sahrens break; 1674088f3894Sahrens } 1675088f3894Sahrens zap_cursor_fini(&zc); 1676fa9e4066Sahrens } 1677fa9e4066Sahrens } 1678fa9e4066Sahrens 1679fa9e4066Sahrens dsl_dir_close(dd, FTAG); 1680b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 1681fa9e4066Sahrens 16821d452cf5Sahrens if (err) 16831d452cf5Sahrens return (err); 16841d452cf5Sahrens 1685fa9e4066Sahrens /* 1686fa9e4066Sahrens * Apply to self if appropriate. 1687fa9e4066Sahrens */ 1688088f3894Sahrens err = func(spa, thisobj, name, arg); 16891d452cf5Sahrens return (err); 1690fa9e4066Sahrens } 1691f18faf3fSek 16927f73c863SRich Morris /* ARGSUSED */ 16937f73c863SRich Morris int 1694fd136879SMatthew Ahrens dmu_objset_prefetch(const char *name, void *arg) 16957f73c863SRich Morris { 16967f73c863SRich Morris dsl_dataset_t *ds; 16977f73c863SRich Morris 16987f73c863SRich Morris if (dsl_dataset_hold(name, FTAG, &ds)) 16997f73c863SRich Morris return (0); 17007f73c863SRich Morris 17017f73c863SRich Morris if (!BP_IS_HOLE(&ds->ds_phys->ds_bp)) { 17027f73c863SRich Morris mutex_enter(&ds->ds_opening_lock); 1703503ad85cSMatthew Ahrens if (ds->ds_objset == NULL) { 17047f73c863SRich Morris uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH; 17057f73c863SRich Morris zbookmark_t zb; 17067f73c863SRich Morris 1707b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, 1708b24ab676SJeff Bonwick ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 17097f73c863SRich Morris 17103f9d6ad7SLin Ling (void) dsl_read_nolock(NULL, dsl_dataset_get_spa(ds), 17117f73c863SRich Morris &ds->ds_phys->ds_bp, NULL, NULL, 17127f73c863SRich Morris ZIO_PRIORITY_ASYNC_READ, 17137f73c863SRich Morris ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE, 17147f73c863SRich Morris &aflags, &zb); 17157f73c863SRich Morris } 17167f73c863SRich Morris mutex_exit(&ds->ds_opening_lock); 17177f73c863SRich Morris } 17187f73c863SRich Morris 17197f73c863SRich Morris dsl_dataset_rele(ds, FTAG); 17207f73c863SRich Morris return (0); 17217f73c863SRich Morris } 17227f73c863SRich Morris 1723f18faf3fSek void 1724f18faf3fSek dmu_objset_set_user(objset_t *os, void *user_ptr) 1725f18faf3fSek { 1726503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1727503ad85cSMatthew Ahrens os->os_user_ptr = user_ptr; 1728f18faf3fSek } 1729f18faf3fSek 1730f18faf3fSek void * 1731f18faf3fSek dmu_objset_get_user(objset_t *os) 1732f18faf3fSek { 1733503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1734503ad85cSMatthew Ahrens return (os->os_user_ptr); 1735f18faf3fSek } 1736