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/zap.h> 40fa9e4066Sahrens #include <sys/zil.h> 41fa9e4066Sahrens #include <sys/dmu_impl.h> 42ecd6cf80Smarks #include <sys/zfs_ioctl.h> 43fa9e4066Sahrens 44fa9e4066Sahrens spa_t * 45fa9e4066Sahrens dmu_objset_spa(objset_t *os) 46fa9e4066Sahrens { 47503ad85cSMatthew Ahrens return (os->os_spa); 48fa9e4066Sahrens } 49fa9e4066Sahrens 50fa9e4066Sahrens zilog_t * 51fa9e4066Sahrens dmu_objset_zil(objset_t *os) 52fa9e4066Sahrens { 53503ad85cSMatthew Ahrens return (os->os_zil); 54fa9e4066Sahrens } 55fa9e4066Sahrens 56fa9e4066Sahrens dsl_pool_t * 57fa9e4066Sahrens dmu_objset_pool(objset_t *os) 58fa9e4066Sahrens { 59fa9e4066Sahrens dsl_dataset_t *ds; 60fa9e4066Sahrens 61503ad85cSMatthew Ahrens if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 62fa9e4066Sahrens return (ds->ds_dir->dd_pool); 63fa9e4066Sahrens else 64503ad85cSMatthew Ahrens return (spa_get_dsl(os->os_spa)); 65fa9e4066Sahrens } 66fa9e4066Sahrens 67fa9e4066Sahrens dsl_dataset_t * 68fa9e4066Sahrens dmu_objset_ds(objset_t *os) 69fa9e4066Sahrens { 70503ad85cSMatthew Ahrens return (os->os_dsl_dataset); 71fa9e4066Sahrens } 72fa9e4066Sahrens 73fa9e4066Sahrens dmu_objset_type_t 74fa9e4066Sahrens dmu_objset_type(objset_t *os) 75fa9e4066Sahrens { 76503ad85cSMatthew Ahrens return (os->os_phys->os_type); 77fa9e4066Sahrens } 78fa9e4066Sahrens 79fa9e4066Sahrens void 80fa9e4066Sahrens dmu_objset_name(objset_t *os, char *buf) 81fa9e4066Sahrens { 82503ad85cSMatthew Ahrens dsl_dataset_name(os->os_dsl_dataset, buf); 83fa9e4066Sahrens } 84fa9e4066Sahrens 85fa9e4066Sahrens uint64_t 86fa9e4066Sahrens dmu_objset_id(objset_t *os) 87fa9e4066Sahrens { 88503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 89fa9e4066Sahrens 90fa9e4066Sahrens return (ds ? ds->ds_object : 0); 91fa9e4066Sahrens } 92fa9e4066Sahrens 93e09fa4daSNeil Perrin uint64_t 94e09fa4daSNeil Perrin dmu_objset_logbias(objset_t *os) 95e09fa4daSNeil Perrin { 96e09fa4daSNeil Perrin return (os->os_logbias); 97e09fa4daSNeil Perrin } 98e09fa4daSNeil Perrin 99fa9e4066Sahrens static void 100fa9e4066Sahrens checksum_changed_cb(void *arg, uint64_t newval) 101fa9e4066Sahrens { 102503ad85cSMatthew Ahrens objset_t *os = arg; 103fa9e4066Sahrens 104fa9e4066Sahrens /* 105fa9e4066Sahrens * Inheritance should have been done by now. 106fa9e4066Sahrens */ 107fa9e4066Sahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 108fa9e4066Sahrens 109503ad85cSMatthew Ahrens os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 110fa9e4066Sahrens } 111fa9e4066Sahrens 112fa9e4066Sahrens static void 113fa9e4066Sahrens compression_changed_cb(void *arg, uint64_t newval) 114fa9e4066Sahrens { 115503ad85cSMatthew Ahrens objset_t *os = arg; 116fa9e4066Sahrens 117fa9e4066Sahrens /* 118fa9e4066Sahrens * Inheritance and range checking should have been done by now. 119fa9e4066Sahrens */ 120fa9e4066Sahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 121fa9e4066Sahrens 122503ad85cSMatthew Ahrens os->os_compress = zio_compress_select(newval, ZIO_COMPRESS_ON_VALUE); 123fa9e4066Sahrens } 124fa9e4066Sahrens 125d0ad202dSahrens static void 126d0ad202dSahrens copies_changed_cb(void *arg, uint64_t newval) 127d0ad202dSahrens { 128503ad85cSMatthew Ahrens objset_t *os = arg; 129d0ad202dSahrens 130d0ad202dSahrens /* 131d0ad202dSahrens * Inheritance and range checking should have been done by now. 132d0ad202dSahrens */ 133d0ad202dSahrens ASSERT(newval > 0); 134503ad85cSMatthew Ahrens ASSERT(newval <= spa_max_replication(os->os_spa)); 135d0ad202dSahrens 136503ad85cSMatthew Ahrens os->os_copies = newval; 137d0ad202dSahrens } 138d0ad202dSahrens 139*b24ab676SJeff Bonwick static void 140*b24ab676SJeff Bonwick dedup_changed_cb(void *arg, uint64_t newval) 141*b24ab676SJeff Bonwick { 142*b24ab676SJeff Bonwick objset_t *os = arg; 143*b24ab676SJeff Bonwick spa_t *spa = os->os_spa; 144*b24ab676SJeff Bonwick enum zio_checksum checksum; 145*b24ab676SJeff Bonwick 146*b24ab676SJeff Bonwick /* 147*b24ab676SJeff Bonwick * Inheritance should have been done by now. 148*b24ab676SJeff Bonwick */ 149*b24ab676SJeff Bonwick ASSERT(newval != ZIO_CHECKSUM_INHERIT); 150*b24ab676SJeff Bonwick 151*b24ab676SJeff Bonwick checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 152*b24ab676SJeff Bonwick 153*b24ab676SJeff Bonwick os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 154*b24ab676SJeff Bonwick os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 155*b24ab676SJeff Bonwick } 156*b24ab676SJeff Bonwick 1573baa08fcSek static void 1583baa08fcSek primary_cache_changed_cb(void *arg, uint64_t newval) 1593baa08fcSek { 160503ad85cSMatthew Ahrens objset_t *os = arg; 1613baa08fcSek 1623baa08fcSek /* 1633baa08fcSek * Inheritance and range checking should have been done by now. 1643baa08fcSek */ 1653baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1663baa08fcSek newval == ZFS_CACHE_METADATA); 1673baa08fcSek 168503ad85cSMatthew Ahrens os->os_primary_cache = newval; 1693baa08fcSek } 1703baa08fcSek 1713baa08fcSek static void 1723baa08fcSek secondary_cache_changed_cb(void *arg, uint64_t newval) 1733baa08fcSek { 174503ad85cSMatthew Ahrens objset_t *os = arg; 1753baa08fcSek 1763baa08fcSek /* 1773baa08fcSek * Inheritance and range checking should have been done by now. 1783baa08fcSek */ 1793baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1803baa08fcSek newval == ZFS_CACHE_METADATA); 1813baa08fcSek 182503ad85cSMatthew Ahrens os->os_secondary_cache = newval; 1833baa08fcSek } 1843baa08fcSek 185e09fa4daSNeil Perrin static void 186e09fa4daSNeil Perrin logbias_changed_cb(void *arg, uint64_t newval) 187e09fa4daSNeil Perrin { 188e09fa4daSNeil Perrin objset_t *os = arg; 189e09fa4daSNeil Perrin 190e09fa4daSNeil Perrin ASSERT(newval == ZFS_LOGBIAS_LATENCY || 191e09fa4daSNeil Perrin newval == ZFS_LOGBIAS_THROUGHPUT); 192e09fa4daSNeil Perrin os->os_logbias = newval; 193e09fa4daSNeil Perrin if (os->os_zil) 194e09fa4daSNeil Perrin zil_set_logbias(os->os_zil, newval); 195e09fa4daSNeil Perrin } 196e09fa4daSNeil Perrin 197fa9e4066Sahrens void 198fa9e4066Sahrens dmu_objset_byteswap(void *buf, size_t size) 199fa9e4066Sahrens { 200fa9e4066Sahrens objset_phys_t *osp = buf; 201fa9e4066Sahrens 20214843421SMatthew Ahrens ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 203fa9e4066Sahrens dnode_byteswap(&osp->os_meta_dnode); 204fa9e4066Sahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 205fa9e4066Sahrens osp->os_type = BSWAP_64(osp->os_type); 20614843421SMatthew Ahrens osp->os_flags = BSWAP_64(osp->os_flags); 20714843421SMatthew Ahrens if (size == sizeof (objset_phys_t)) { 20814843421SMatthew Ahrens dnode_byteswap(&osp->os_userused_dnode); 20914843421SMatthew Ahrens dnode_byteswap(&osp->os_groupused_dnode); 21014843421SMatthew Ahrens } 211fa9e4066Sahrens } 212fa9e4066Sahrens 213ea8dc4b6Seschrock int 214ea8dc4b6Seschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 215503ad85cSMatthew Ahrens objset_t **osp) 216fa9e4066Sahrens { 217503ad85cSMatthew Ahrens objset_t *os; 218088f3894Sahrens int i, err; 219fa9e4066Sahrens 22091ebeef5Sahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 22191ebeef5Sahrens 222503ad85cSMatthew Ahrens os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 223503ad85cSMatthew Ahrens os->os_dsl_dataset = ds; 224503ad85cSMatthew Ahrens os->os_spa = spa; 225503ad85cSMatthew Ahrens os->os_rootbp = bp; 226503ad85cSMatthew Ahrens if (!BP_IS_HOLE(os->os_rootbp)) { 22713506d1eSmaybee uint32_t aflags = ARC_WAIT; 228ea8dc4b6Seschrock zbookmark_t zb; 229*b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 230*b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 231*b24ab676SJeff Bonwick 232503ad85cSMatthew Ahrens if (DMU_OS_IS_L2CACHEABLE(os)) 2333baa08fcSek aflags |= ARC_L2CACHE; 234ea8dc4b6Seschrock 235503ad85cSMatthew Ahrens dprintf_bp(os->os_rootbp, "reading %s", ""); 236088f3894Sahrens /* 237088f3894Sahrens * NB: when bprewrite scrub can change the bp, 238088f3894Sahrens * and this is called from dmu_objset_open_ds_os, the bp 239088f3894Sahrens * could change, and we'll need a lock. 240088f3894Sahrens */ 241503ad85cSMatthew Ahrens err = arc_read_nolock(NULL, spa, os->os_rootbp, 242503ad85cSMatthew Ahrens arc_getbuf_func, &os->os_phys_buf, 24313506d1eSmaybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 244ea8dc4b6Seschrock if (err) { 245503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 246b87f3af3Sperrin /* convert checksum errors into IO errors */ 247b87f3af3Sperrin if (err == ECKSUM) 248b87f3af3Sperrin err = EIO; 249ea8dc4b6Seschrock return (err); 250ea8dc4b6Seschrock } 25114843421SMatthew Ahrens 25214843421SMatthew Ahrens /* Increase the blocksize if we are permitted. */ 25314843421SMatthew Ahrens if (spa_version(spa) >= SPA_VERSION_USERSPACE && 254503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 25514843421SMatthew Ahrens arc_buf_t *buf = arc_buf_alloc(spa, 256503ad85cSMatthew Ahrens sizeof (objset_phys_t), &os->os_phys_buf, 25714843421SMatthew Ahrens ARC_BUFC_METADATA); 25814843421SMatthew Ahrens bzero(buf->b_data, sizeof (objset_phys_t)); 259503ad85cSMatthew Ahrens bcopy(os->os_phys_buf->b_data, buf->b_data, 260503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf)); 261503ad85cSMatthew Ahrens (void) arc_buf_remove_ref(os->os_phys_buf, 262503ad85cSMatthew Ahrens &os->os_phys_buf); 263503ad85cSMatthew Ahrens os->os_phys_buf = buf; 26414843421SMatthew Ahrens } 26514843421SMatthew Ahrens 266503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 267503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 268fa9e4066Sahrens } else { 26914843421SMatthew Ahrens int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 27014843421SMatthew Ahrens sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 271503ad85cSMatthew Ahrens os->os_phys_buf = arc_buf_alloc(spa, size, 272503ad85cSMatthew Ahrens &os->os_phys_buf, ARC_BUFC_METADATA); 273503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 274503ad85cSMatthew Ahrens bzero(os->os_phys, size); 275fa9e4066Sahrens } 276fa9e4066Sahrens 277fa9e4066Sahrens /* 278fa9e4066Sahrens * Note: the changed_cb will be called once before the register 279fa9e4066Sahrens * func returns, thus changing the checksum/compression from the 2803baa08fcSek * default (fletcher2/off). Snapshots don't need to know about 2813baa08fcSek * checksum/compression/copies. 282fa9e4066Sahrens */ 2833baa08fcSek if (ds) { 2843baa08fcSek err = dsl_prop_register(ds, "primarycache", 285503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 286d0ad202dSahrens if (err == 0) 2873baa08fcSek err = dsl_prop_register(ds, "secondarycache", 288503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 2893baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 2903baa08fcSek if (err == 0) 2913baa08fcSek err = dsl_prop_register(ds, "checksum", 292503ad85cSMatthew Ahrens checksum_changed_cb, os); 2933baa08fcSek if (err == 0) 2943baa08fcSek err = dsl_prop_register(ds, "compression", 295503ad85cSMatthew Ahrens compression_changed_cb, os); 2963baa08fcSek if (err == 0) 2973baa08fcSek err = dsl_prop_register(ds, "copies", 298503ad85cSMatthew Ahrens copies_changed_cb, os); 299*b24ab676SJeff Bonwick if (err == 0) 300*b24ab676SJeff Bonwick err = dsl_prop_register(ds, "dedup", 301*b24ab676SJeff Bonwick dedup_changed_cb, os); 302e09fa4daSNeil Perrin if (err == 0) 303e09fa4daSNeil Perrin err = dsl_prop_register(ds, "logbias", 304e09fa4daSNeil Perrin logbias_changed_cb, os); 3053baa08fcSek } 306ea8dc4b6Seschrock if (err) { 307503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 308503ad85cSMatthew Ahrens &os->os_phys_buf) == 1); 309503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 310ea8dc4b6Seschrock return (err); 311ea8dc4b6Seschrock } 31299653d4eSeschrock } else if (ds == NULL) { 313fa9e4066Sahrens /* It's the meta-objset. */ 314503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 315503ad85cSMatthew Ahrens os->os_compress = ZIO_COMPRESS_LZJB; 316503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 317*b24ab676SJeff Bonwick os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 318*b24ab676SJeff Bonwick os->os_dedup_verify = 0; 319*b24ab676SJeff Bonwick os->os_logbias = 0; 320503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 321503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 322fa9e4066Sahrens } 323fa9e4066Sahrens 324503ad85cSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 325503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 326fa9e4066Sahrens 327fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 328503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 329fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 330503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 331fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 332fa9e4066Sahrens } 333503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 334fa9e4066Sahrens offsetof(dnode_t, dn_link)); 335503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 336fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 337fa9e4066Sahrens 338503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 339503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 340503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 341503ad85cSMatthew Ahrens 342503ad85cSMatthew Ahrens os->os_meta_dnode = dnode_special_open(os, 343503ad85cSMatthew Ahrens &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT); 344503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 345503ad85cSMatthew Ahrens os->os_userused_dnode = dnode_special_open(os, 346503ad85cSMatthew Ahrens &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT); 347503ad85cSMatthew Ahrens os->os_groupused_dnode = dnode_special_open(os, 348503ad85cSMatthew Ahrens &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT); 34914843421SMatthew Ahrens } 350fa9e4066Sahrens 35191ebeef5Sahrens /* 35291ebeef5Sahrens * We should be the only thread trying to do this because we 35391ebeef5Sahrens * have ds_opening_lock 35491ebeef5Sahrens */ 35591ebeef5Sahrens if (ds) { 356503ad85cSMatthew Ahrens mutex_enter(&ds->ds_lock); 357503ad85cSMatthew Ahrens ASSERT(ds->ds_objset == NULL); 358503ad85cSMatthew Ahrens ds->ds_objset = os; 359503ad85cSMatthew Ahrens mutex_exit(&ds->ds_lock); 360fa9e4066Sahrens } 361fa9e4066Sahrens 362503ad85cSMatthew Ahrens *osp = os; 363ea8dc4b6Seschrock return (0); 364fa9e4066Sahrens } 365fa9e4066Sahrens 366503ad85cSMatthew Ahrens int 367503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 3683cb34c60Sahrens { 369503ad85cSMatthew Ahrens int err = 0; 3703cb34c60Sahrens 3713cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 372503ad85cSMatthew Ahrens *osp = ds->ds_objset; 373503ad85cSMatthew Ahrens if (*osp == NULL) { 3743cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 375503ad85cSMatthew Ahrens ds, &ds->ds_phys->ds_bp, osp); 3763cb34c60Sahrens } 3773cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 378503ad85cSMatthew Ahrens return (err); 3793cb34c60Sahrens } 3803cb34c60Sahrens 381503ad85cSMatthew Ahrens /* called from zpl */ 3823cb34c60Sahrens int 383503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 3843cb34c60Sahrens { 385503ad85cSMatthew Ahrens dsl_dataset_t *ds; 3863cb34c60Sahrens int err; 3873cb34c60Sahrens 388503ad85cSMatthew Ahrens err = dsl_dataset_hold(name, tag, &ds); 3893cb34c60Sahrens if (err) 390503ad85cSMatthew Ahrens return (err); 391503ad85cSMatthew Ahrens 392503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 393503ad85cSMatthew Ahrens if (err) 394503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 395503ad85cSMatthew Ahrens 3963cb34c60Sahrens return (err); 3973cb34c60Sahrens } 3983cb34c60Sahrens 399fa9e4066Sahrens /* called from zpl */ 400fa9e4066Sahrens int 401503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 402503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 403fa9e4066Sahrens { 404f18faf3fSek dsl_dataset_t *ds; 405f18faf3fSek int err; 406fa9e4066Sahrens 407503ad85cSMatthew Ahrens err = dsl_dataset_own(name, B_FALSE, tag, &ds); 408503ad85cSMatthew Ahrens if (err) 409fa9e4066Sahrens return (err); 410fa9e4066Sahrens 411503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 4123cb34c60Sahrens if (err) { 413503ad85cSMatthew Ahrens dsl_dataset_disown(ds, tag); 414681d9761SEric Taylor } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 415503ad85cSMatthew Ahrens dmu_objset_disown(*osp, tag); 416503ad85cSMatthew Ahrens return (EINVAL); 417681d9761SEric Taylor } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 418681d9761SEric Taylor dmu_objset_disown(*osp, tag); 419681d9761SEric Taylor return (EROFS); 420fa9e4066Sahrens } 4213cb34c60Sahrens return (err); 422fa9e4066Sahrens } 423fa9e4066Sahrens 424fa9e4066Sahrens void 425503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 426fa9e4066Sahrens { 427503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 428503ad85cSMatthew Ahrens } 429503ad85cSMatthew Ahrens 430503ad85cSMatthew Ahrens void 431503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 432503ad85cSMatthew Ahrens { 433503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 434fa9e4066Sahrens } 435fa9e4066Sahrens 436436b2950Sperrin int 4371934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 438ea8dc4b6Seschrock { 439ea8dc4b6Seschrock dnode_t *dn; 440c543ec06Sahrens 441503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 442c543ec06Sahrens 443c543ec06Sahrens /* process the mdn last, since the other dnodes have holds on it */ 444503ad85cSMatthew Ahrens list_remove(&os->os_dnodes, os->os_meta_dnode); 445503ad85cSMatthew Ahrens list_insert_tail(&os->os_dnodes, os->os_meta_dnode); 446ea8dc4b6Seschrock 447ea8dc4b6Seschrock /* 448c543ec06Sahrens * Find the first dnode with holds. We have to do this dance 449c543ec06Sahrens * because dnode_add_ref() only works if you already have a 450c543ec06Sahrens * hold. If there are no holds then it has no dbufs so OK to 451c543ec06Sahrens * skip. 452ea8dc4b6Seschrock */ 453503ad85cSMatthew Ahrens for (dn = list_head(&os->os_dnodes); 4541934e92fSmaybee dn && !dnode_add_ref(dn, FTAG); 455503ad85cSMatthew Ahrens dn = list_next(&os->os_dnodes, dn)) 456c543ec06Sahrens continue; 457c543ec06Sahrens 458c543ec06Sahrens while (dn) { 459c543ec06Sahrens dnode_t *next_dn = dn; 460c543ec06Sahrens 461c543ec06Sahrens do { 462503ad85cSMatthew Ahrens next_dn = list_next(&os->os_dnodes, next_dn); 4631934e92fSmaybee } while (next_dn && !dnode_add_ref(next_dn, FTAG)); 464c543ec06Sahrens 465503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 4661934e92fSmaybee dnode_evict_dbufs(dn); 467c543ec06Sahrens dnode_rele(dn, FTAG); 468503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 469c543ec06Sahrens dn = next_dn; 470ea8dc4b6Seschrock } 471503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 472503ad85cSMatthew Ahrens return (list_head(&os->os_dnodes) != os->os_meta_dnode); 473ea8dc4b6Seschrock } 474ea8dc4b6Seschrock 475fa9e4066Sahrens void 476503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 477fa9e4066Sahrens { 478503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 479fa9e4066Sahrens 480*b24ab676SJeff Bonwick for (int t = 0; t < TXG_SIZE; t++) 481*b24ab676SJeff Bonwick ASSERT(!dmu_objset_is_dirty(os, t)); 482fa9e4066Sahrens 4833baa08fcSek if (ds) { 4843baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 4853baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "checksum", 486503ad85cSMatthew Ahrens checksum_changed_cb, os)); 4873baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "compression", 488503ad85cSMatthew Ahrens compression_changed_cb, os)); 4893baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "copies", 490503ad85cSMatthew Ahrens copies_changed_cb, os)); 491*b24ab676SJeff Bonwick VERIFY(0 == dsl_prop_unregister(ds, "dedup", 492*b24ab676SJeff Bonwick dedup_changed_cb, os)); 493e09fa4daSNeil Perrin VERIFY(0 == dsl_prop_unregister(ds, "logbias", 494e09fa4daSNeil Perrin logbias_changed_cb, os)); 4953baa08fcSek } 4963baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "primarycache", 497503ad85cSMatthew Ahrens primary_cache_changed_cb, os)); 4983baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "secondarycache", 499503ad85cSMatthew Ahrens secondary_cache_changed_cb, os)); 500fa9e4066Sahrens } 501fa9e4066Sahrens 502ea8dc4b6Seschrock /* 503ea8dc4b6Seschrock * We should need only a single pass over the dnode list, since 504ea8dc4b6Seschrock * nothing can be added to the list at this point. 505ea8dc4b6Seschrock */ 506503ad85cSMatthew Ahrens (void) dmu_objset_evict_dbufs(os); 507ea8dc4b6Seschrock 508503ad85cSMatthew Ahrens dnode_special_close(os->os_meta_dnode); 509503ad85cSMatthew Ahrens if (os->os_userused_dnode) { 510503ad85cSMatthew Ahrens dnode_special_close(os->os_userused_dnode); 511503ad85cSMatthew Ahrens dnode_special_close(os->os_groupused_dnode); 51214843421SMatthew Ahrens } 513503ad85cSMatthew Ahrens zil_free(os->os_zil); 514fa9e4066Sahrens 515503ad85cSMatthew Ahrens ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 51614843421SMatthew Ahrens 517503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf) == 1); 518503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 519503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 520503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 521503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 522fa9e4066Sahrens } 523fa9e4066Sahrens 52471eb0538SChris Kirby timestruc_t 52571eb0538SChris Kirby dmu_objset_snap_cmtime(objset_t *os) 52671eb0538SChris Kirby { 52771eb0538SChris Kirby return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 52871eb0538SChris Kirby } 52971eb0538SChris Kirby 530fa9e4066Sahrens /* called from dsl for meta-objset */ 531503ad85cSMatthew Ahrens objset_t * 532c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 533c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 534fa9e4066Sahrens { 535503ad85cSMatthew Ahrens objset_t *os; 536fa9e4066Sahrens dnode_t *mdn; 537fa9e4066Sahrens 538fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 53991ebeef5Sahrens if (ds) 54091ebeef5Sahrens mutex_enter(&ds->ds_opening_lock); 541503ad85cSMatthew Ahrens VERIFY(0 == dmu_objset_open_impl(spa, ds, bp, &os)); 54291ebeef5Sahrens if (ds) 54391ebeef5Sahrens mutex_exit(&ds->ds_opening_lock); 544503ad85cSMatthew Ahrens mdn = os->os_meta_dnode; 545fa9e4066Sahrens 546fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 547fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 548fa9e4066Sahrens 549fa9e4066Sahrens /* 550fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 551fa9e4066Sahrens * later, because then we could do it in quescing context while 552fa9e4066Sahrens * we are also accessing it in open context. 553fa9e4066Sahrens * 554fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 555fa9e4066Sahrens * because the MOS is only updated in syncing context. 556fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 557fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 558fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 559fa9e4066Sahrens */ 560ea8dc4b6Seschrock if (ds != NULL) { 561ea8dc4b6Seschrock int levels = 1; 562ea8dc4b6Seschrock 563ea8dc4b6Seschrock /* 564ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 565ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 566ea8dc4b6Seschrock */ 567ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 568ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 569ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 570ea8dc4b6Seschrock levels++; 571ea8dc4b6Seschrock 572fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 573ea8dc4b6Seschrock mdn->dn_nlevels = levels; 574ea8dc4b6Seschrock } 575fa9e4066Sahrens 576fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 577fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 578fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 579503ad85cSMatthew Ahrens os->os_phys->os_type = type; 580503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 581503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 582503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 58314843421SMatthew Ahrens } 584fa9e4066Sahrens 585fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 586fa9e4066Sahrens 587503ad85cSMatthew Ahrens return (os); 588fa9e4066Sahrens } 589fa9e4066Sahrens 590fa9e4066Sahrens struct oscarg { 591ecd6cf80Smarks void (*userfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 592fa9e4066Sahrens void *userarg; 593ae46e4c7SMatthew Ahrens dsl_dataset_t *clone_origin; 594fa9e4066Sahrens const char *lastname; 595fa9e4066Sahrens dmu_objset_type_t type; 596ab04eb8eStimh uint64_t flags; 597fa9e4066Sahrens }; 598fa9e4066Sahrens 599ecd6cf80Smarks /*ARGSUSED*/ 600fa9e4066Sahrens static int 6011d452cf5Sahrens dmu_objset_create_check(void *arg1, void *arg2, dmu_tx_t *tx) 602fa9e4066Sahrens { 6031d452cf5Sahrens dsl_dir_t *dd = arg1; 6041d452cf5Sahrens struct oscarg *oa = arg2; 6051d452cf5Sahrens objset_t *mos = dd->dd_pool->dp_meta_objset; 606fa9e4066Sahrens int err; 6071d452cf5Sahrens uint64_t ddobj; 6081d452cf5Sahrens 6091d452cf5Sahrens err = zap_lookup(mos, dd->dd_phys->dd_child_dir_zapobj, 6101d452cf5Sahrens oa->lastname, sizeof (uint64_t), 1, &ddobj); 6111d452cf5Sahrens if (err != ENOENT) 6121d452cf5Sahrens return (err ? err : EEXIST); 6131d452cf5Sahrens 614ae46e4c7SMatthew Ahrens if (oa->clone_origin != NULL) { 615ae46e4c7SMatthew Ahrens /* You can't clone across pools. */ 616ae46e4c7SMatthew Ahrens if (oa->clone_origin->ds_dir->dd_pool != dd->dd_pool) 6171d452cf5Sahrens return (EXDEV); 6181d452cf5Sahrens 619ae46e4c7SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 620ae46e4c7SMatthew Ahrens if (!dsl_dataset_is_snapshot(oa->clone_origin)) 6211d452cf5Sahrens return (EINVAL); 6221d452cf5Sahrens } 623ecd6cf80Smarks 6241d452cf5Sahrens return (0); 6251d452cf5Sahrens } 6261d452cf5Sahrens 6271d452cf5Sahrens static void 628ecd6cf80Smarks dmu_objset_create_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 6291d452cf5Sahrens { 6301d452cf5Sahrens dsl_dir_t *dd = arg1; 6311d452cf5Sahrens struct oscarg *oa = arg2; 6321d452cf5Sahrens uint64_t dsobj; 633fa9e4066Sahrens 634fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 635fa9e4066Sahrens 6361d452cf5Sahrens dsobj = dsl_dataset_create_sync(dd, oa->lastname, 637ae46e4c7SMatthew Ahrens oa->clone_origin, oa->flags, cr, tx); 638fa9e4066Sahrens 639ae46e4c7SMatthew Ahrens if (oa->clone_origin == NULL) { 640ae46e4c7SMatthew Ahrens dsl_dataset_t *ds; 641ae46e4c7SMatthew Ahrens blkptr_t *bp; 642503ad85cSMatthew Ahrens objset_t *os; 643fa9e4066Sahrens 644ae46e4c7SMatthew Ahrens VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, dsobj, 645ae46e4c7SMatthew Ahrens FTAG, &ds)); 646ae46e4c7SMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 647ae46e4c7SMatthew Ahrens ASSERT(BP_IS_HOLE(bp)); 648ae46e4c7SMatthew Ahrens 649503ad85cSMatthew Ahrens os = dmu_objset_create_impl(dsl_dataset_get_spa(ds), 650c717a561Smaybee ds, bp, oa->type, tx); 651fa9e4066Sahrens 652fa9e4066Sahrens if (oa->userfunc) 653503ad85cSMatthew Ahrens oa->userfunc(os, oa->userarg, cr, tx); 654ae46e4c7SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 655fa9e4066Sahrens } 656ecd6cf80Smarks 657ecd6cf80Smarks spa_history_internal_log(LOG_DS_CREATE, dd->dd_pool->dp_spa, 658ecd6cf80Smarks tx, cr, "dataset = %llu", dsobj); 659fa9e4066Sahrens } 660fa9e4066Sahrens 661fa9e4066Sahrens int 662ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 663ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 664fa9e4066Sahrens { 6651d452cf5Sahrens dsl_dir_t *pdd; 666fa9e4066Sahrens const char *tail; 667fa9e4066Sahrens int err = 0; 6681d452cf5Sahrens struct oscarg oa = { 0 }; 669fa9e4066Sahrens 6701d452cf5Sahrens ASSERT(strchr(name, '@') == NULL); 6711d452cf5Sahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 672ea8dc4b6Seschrock if (err) 673ea8dc4b6Seschrock return (err); 674fa9e4066Sahrens if (tail == NULL) { 6751d452cf5Sahrens dsl_dir_close(pdd, FTAG); 676fa9e4066Sahrens return (EEXIST); 677fa9e4066Sahrens } 678fa9e4066Sahrens 6791d452cf5Sahrens oa.userfunc = func; 6801d452cf5Sahrens oa.userarg = arg; 6811d452cf5Sahrens oa.lastname = tail; 6821d452cf5Sahrens oa.type = type; 683ab04eb8eStimh oa.flags = flags; 684ecd6cf80Smarks 685ae46e4c7SMatthew Ahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 686ae46e4c7SMatthew Ahrens dmu_objset_create_sync, pdd, &oa, 5); 687ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 688ae46e4c7SMatthew Ahrens return (err); 689ae46e4c7SMatthew Ahrens } 690ae46e4c7SMatthew Ahrens 691ae46e4c7SMatthew Ahrens int 692ae46e4c7SMatthew Ahrens dmu_objset_clone(const char *name, dsl_dataset_t *clone_origin, uint64_t flags) 693ae46e4c7SMatthew Ahrens { 694ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 695ae46e4c7SMatthew Ahrens const char *tail; 696ae46e4c7SMatthew Ahrens int err = 0; 697ae46e4c7SMatthew Ahrens struct oscarg oa = { 0 }; 698ae46e4c7SMatthew Ahrens 699ae46e4c7SMatthew Ahrens ASSERT(strchr(name, '@') == NULL); 700ae46e4c7SMatthew Ahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 701ae46e4c7SMatthew Ahrens if (err) 702ae46e4c7SMatthew Ahrens return (err); 703ae46e4c7SMatthew Ahrens if (tail == NULL) { 704ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 705ae46e4c7SMatthew Ahrens return (EEXIST); 706fa9e4066Sahrens } 707ae46e4c7SMatthew Ahrens 708ae46e4c7SMatthew Ahrens oa.lastname = tail; 709ae46e4c7SMatthew Ahrens oa.clone_origin = clone_origin; 710ae46e4c7SMatthew Ahrens oa.flags = flags; 711ae46e4c7SMatthew Ahrens 7121d452cf5Sahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 7131d452cf5Sahrens dmu_objset_create_sync, pdd, &oa, 5); 7141d452cf5Sahrens dsl_dir_close(pdd, FTAG); 715fa9e4066Sahrens return (err); 716fa9e4066Sahrens } 717fa9e4066Sahrens 718fa9e4066Sahrens int 719842727c2SChris Kirby dmu_objset_destroy(const char *name, boolean_t defer) 720fa9e4066Sahrens { 721503ad85cSMatthew Ahrens dsl_dataset_t *ds; 722fa9e4066Sahrens int error; 723fa9e4066Sahrens 724fa9e4066Sahrens /* 725ae46e4c7SMatthew Ahrens * dsl_dataset_destroy() can free any claimed-but-unplayed 726ae46e4c7SMatthew Ahrens * intent log, but if there is an active log, it has blocks that 727ae46e4c7SMatthew Ahrens * are allocated, but may not yet be reflected in the on-disk 728ae46e4c7SMatthew Ahrens * structure. Only the ZIL knows how to free them, so we have 729ae46e4c7SMatthew Ahrens * to call into it here. 730fa9e4066Sahrens */ 731503ad85cSMatthew Ahrens error = dsl_dataset_own(name, B_TRUE, FTAG, &ds); 732fa9e4066Sahrens if (error == 0) { 733503ad85cSMatthew Ahrens objset_t *os; 734503ad85cSMatthew Ahrens if (dmu_objset_from_ds(ds, &os) == 0) 735503ad85cSMatthew Ahrens zil_destroy(dmu_objset_zil(os), B_FALSE); 736503ad85cSMatthew Ahrens error = dsl_dataset_destroy(ds, FTAG, defer); 737ae46e4c7SMatthew Ahrens /* dsl_dataset_destroy() closes the ds. */ 738fa9e4066Sahrens } 739fa9e4066Sahrens 7403cb34c60Sahrens return (error); 741fa9e4066Sahrens } 742fa9e4066Sahrens 7431d452cf5Sahrens struct snaparg { 7441d452cf5Sahrens dsl_sync_task_group_t *dstg; 7451d452cf5Sahrens char *snapname; 7461d452cf5Sahrens char failed[MAXPATHLEN]; 747ecd6cf80Smarks boolean_t checkperms; 748ea2f5b9eSMatthew Ahrens nvlist_t *props; 7493cb34c60Sahrens }; 7503cb34c60Sahrens 751ea2f5b9eSMatthew Ahrens static int 752ea2f5b9eSMatthew Ahrens snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) 753ea2f5b9eSMatthew Ahrens { 754ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 755ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 756ea2f5b9eSMatthew Ahrens 757ea2f5b9eSMatthew Ahrens /* The props have already been checked by zfs_check_userprops(). */ 758ea2f5b9eSMatthew Ahrens 759503ad85cSMatthew Ahrens return (dsl_dataset_snapshot_check(os->os_dsl_dataset, 760ea2f5b9eSMatthew Ahrens sn->snapname, tx)); 761ea2f5b9eSMatthew Ahrens } 762ea2f5b9eSMatthew Ahrens 763ea2f5b9eSMatthew Ahrens static void 764ea2f5b9eSMatthew Ahrens snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 765ea2f5b9eSMatthew Ahrens { 766ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 767503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 768ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 769ea2f5b9eSMatthew Ahrens 770ea2f5b9eSMatthew Ahrens dsl_dataset_snapshot_sync(ds, sn->snapname, cr, tx); 771ea2f5b9eSMatthew Ahrens 772ea2f5b9eSMatthew Ahrens if (sn->props) 773ea2f5b9eSMatthew Ahrens dsl_props_set_sync(ds->ds_prev, sn->props, cr, tx); 774ea2f5b9eSMatthew Ahrens } 7751d452cf5Sahrens 7761d452cf5Sahrens static int 7771d452cf5Sahrens dmu_objset_snapshot_one(char *name, void *arg) 7781d452cf5Sahrens { 7791d452cf5Sahrens struct snaparg *sn = arg; 7801d452cf5Sahrens objset_t *os; 7811d452cf5Sahrens int err; 7821d452cf5Sahrens 7831d452cf5Sahrens (void) strcpy(sn->failed, name); 7841d452cf5Sahrens 785ecd6cf80Smarks /* 786ecd6cf80Smarks * Check permissions only when requested. This only applies when 787ecd6cf80Smarks * doing a recursive snapshot. The permission checks for the starting 788ecd6cf80Smarks * dataset have already been performed in zfs_secpolicy_snapshot() 789ecd6cf80Smarks */ 790ecd6cf80Smarks if (sn->checkperms == B_TRUE && 791ecd6cf80Smarks (err = zfs_secpolicy_snapshot_perms(name, CRED()))) 792ecd6cf80Smarks return (err); 793ecd6cf80Smarks 794503ad85cSMatthew Ahrens err = dmu_objset_hold(name, sn, &os); 7951d452cf5Sahrens if (err != 0) 7961d452cf5Sahrens return (err); 7971d452cf5Sahrens 798745cd3c5Smaybee /* If the objset is in an inconsistent state, return busy */ 799503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) { 800503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 801f2e10be3Srm return (EBUSY); 802f2e10be3Srm } 803f2e10be3Srm 8041d452cf5Sahrens /* 8051d452cf5Sahrens * NB: we need to wait for all in-flight changes to get to disk, 8061d452cf5Sahrens * so that we snapshot those changes. zil_suspend does this as 8071d452cf5Sahrens * a side effect. 8081d452cf5Sahrens */ 8091d452cf5Sahrens err = zil_suspend(dmu_objset_zil(os)); 8101d452cf5Sahrens if (err == 0) { 811ea2f5b9eSMatthew Ahrens dsl_sync_task_create(sn->dstg, snapshot_check, 812ea2f5b9eSMatthew Ahrens snapshot_sync, os, sn, 3); 813f2e10be3Srm } else { 814503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 8151d452cf5Sahrens } 816f2e10be3Srm 8171d452cf5Sahrens return (err); 8181d452cf5Sahrens } 8191d452cf5Sahrens 8201d452cf5Sahrens int 821ea2f5b9eSMatthew Ahrens dmu_objset_snapshot(char *fsname, char *snapname, 822ea2f5b9eSMatthew Ahrens nvlist_t *props, boolean_t recursive) 8231d452cf5Sahrens { 8241d452cf5Sahrens dsl_sync_task_t *dst; 825ea2f5b9eSMatthew Ahrens struct snaparg sn; 8261d452cf5Sahrens spa_t *spa; 8271d452cf5Sahrens int err; 8281d452cf5Sahrens 8291d452cf5Sahrens (void) strcpy(sn.failed, fsname); 8301d452cf5Sahrens 83140feaa91Sahrens err = spa_open(fsname, &spa, FTAG); 8321d452cf5Sahrens if (err) 8331d452cf5Sahrens return (err); 8341d452cf5Sahrens 8351d452cf5Sahrens sn.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); 8361d452cf5Sahrens sn.snapname = snapname; 837ea2f5b9eSMatthew Ahrens sn.props = props; 8381d452cf5Sahrens 8390b69c2f0Sahrens if (recursive) { 840ecd6cf80Smarks sn.checkperms = B_TRUE; 8410b69c2f0Sahrens err = dmu_objset_find(fsname, 8420b69c2f0Sahrens dmu_objset_snapshot_one, &sn, DS_FIND_CHILDREN); 8430b69c2f0Sahrens } else { 844ecd6cf80Smarks sn.checkperms = B_FALSE; 8451d452cf5Sahrens err = dmu_objset_snapshot_one(fsname, &sn); 8460b69c2f0Sahrens } 8471d452cf5Sahrens 848ea2f5b9eSMatthew Ahrens if (err == 0) 849ea2f5b9eSMatthew Ahrens err = dsl_sync_task_group_wait(sn.dstg); 8501d452cf5Sahrens 8511d452cf5Sahrens for (dst = list_head(&sn.dstg->dstg_tasks); dst; 8521d452cf5Sahrens dst = list_next(&sn.dstg->dstg_tasks, dst)) { 853ea2f5b9eSMatthew Ahrens objset_t *os = dst->dst_arg1; 854503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 8551d452cf5Sahrens if (dst->dst_err) 8563cb34c60Sahrens dsl_dataset_name(ds, sn.failed); 857ea2f5b9eSMatthew Ahrens zil_resume(dmu_objset_zil(os)); 858503ad85cSMatthew Ahrens dmu_objset_rele(os, &sn); 8593cb34c60Sahrens } 8603cb34c60Sahrens 8611d452cf5Sahrens if (err) 8621d452cf5Sahrens (void) strcpy(fsname, sn.failed); 8631d452cf5Sahrens dsl_sync_task_group_destroy(sn.dstg); 8641d452cf5Sahrens spa_close(spa, FTAG); 8651d452cf5Sahrens return (err); 8661d452cf5Sahrens } 8671d452cf5Sahrens 868fa9e4066Sahrens static void 86914843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 870fa9e4066Sahrens { 871c717a561Smaybee dnode_t *dn; 872faafa6e3Sahrens 873c717a561Smaybee while (dn = list_head(list)) { 874c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 875c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 876c717a561Smaybee /* 87714843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 87814843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 879c717a561Smaybee */ 880c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 881c717a561Smaybee ASSERT(dn->dn_zio); 882faafa6e3Sahrens 883c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 884c717a561Smaybee list_remove(list, dn); 88514843421SMatthew Ahrens 88614843421SMatthew Ahrens if (newlist) { 88714843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 88814843421SMatthew Ahrens list_insert_tail(newlist, dn); 88914843421SMatthew Ahrens } 89014843421SMatthew Ahrens 891c717a561Smaybee dnode_sync(dn, tx); 892fa9e4066Sahrens } 893fa9e4066Sahrens } 894fa9e4066Sahrens 895fa9e4066Sahrens /* ARGSUSED */ 896fa9e4066Sahrens static void 897*b24ab676SJeff Bonwick dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 898fa9e4066Sahrens { 899e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 900503ad85cSMatthew Ahrens objset_t *os = arg; 901c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 902fa9e4066Sahrens 903e14bb325SJeff Bonwick ASSERT(bp == os->os_rootbp); 904e14bb325SJeff Bonwick ASSERT(BP_GET_TYPE(bp) == DMU_OT_OBJSET); 905e14bb325SJeff Bonwick ASSERT(BP_GET_LEVEL(bp) == 0); 9060a4e9518Sgw 907fa9e4066Sahrens /* 90814843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 90914843421SMatthew Ahrens * allocated in the object set (not counting the "special" 91014843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 91114843421SMatthew Ahrens * dnode and user/group accounting objects). 912fa9e4066Sahrens */ 91314843421SMatthew Ahrens bp->blk_fill = 0; 914e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 915c717a561Smaybee bp->blk_fill += dnp->dn_blkptr[i].blk_fill; 916*b24ab676SJeff Bonwick } 917*b24ab676SJeff Bonwick 918*b24ab676SJeff Bonwick /* ARGSUSED */ 919*b24ab676SJeff Bonwick static void 920*b24ab676SJeff Bonwick dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 921*b24ab676SJeff Bonwick { 922*b24ab676SJeff Bonwick blkptr_t *bp = zio->io_bp; 923*b24ab676SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 924*b24ab676SJeff Bonwick objset_t *os = arg; 9250a4e9518Sgw 926e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 927*b24ab676SJeff Bonwick ASSERT(BP_EQUAL(bp, bp_orig)); 928e14bb325SJeff Bonwick } else { 929*b24ab676SJeff Bonwick dsl_dataset_t *ds = os->os_dsl_dataset; 930*b24ab676SJeff Bonwick dmu_tx_t *tx = os->os_synctx; 931*b24ab676SJeff Bonwick 932*b24ab676SJeff Bonwick (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 933*b24ab676SJeff Bonwick dsl_dataset_block_born(ds, bp, tx); 9340a4e9518Sgw } 935c717a561Smaybee } 936c717a561Smaybee 937fa9e4066Sahrens /* called from dsl */ 938fa9e4066Sahrens void 939503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 940fa9e4066Sahrens { 941fa9e4066Sahrens int txgoff; 942ea8dc4b6Seschrock zbookmark_t zb; 943*b24ab676SJeff Bonwick zio_prop_t zp; 944c717a561Smaybee zio_t *zio; 945c717a561Smaybee list_t *list; 94614843421SMatthew Ahrens list_t *newlist = NULL; 947c717a561Smaybee dbuf_dirty_record_t *dr; 948c717a561Smaybee 949c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 950fa9e4066Sahrens 951fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 952fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 953fa9e4066Sahrens os->os_synctx = tx; 954fa9e4066Sahrens 95587bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 95687bd5c1eSahrens /* 95787bd5c1eSahrens * This is the MOS. If we have upgraded, 95887bd5c1eSahrens * spa_max_replication() could change, so reset 95987bd5c1eSahrens * os_copies here. 96087bd5c1eSahrens */ 96187bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 96287bd5c1eSahrens } 96387bd5c1eSahrens 964fa9e4066Sahrens /* 965c717a561Smaybee * Create the root block IO 966fa9e4066Sahrens */ 967088f3894Sahrens arc_release(os->os_phys_buf, &os->os_phys_buf); 96814843421SMatthew Ahrens 969*b24ab676SJeff Bonwick SET_BOOKMARK(&zb, os->os_dsl_dataset ? 970*b24ab676SJeff Bonwick os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 971*b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 972*b24ab676SJeff Bonwick 973*b24ab676SJeff Bonwick dmu_write_policy(os, NULL, 0, 0, &zp); 974*b24ab676SJeff Bonwick 975*b24ab676SJeff Bonwick zio = arc_write(pio, os->os_spa, tx->tx_txg, 976*b24ab676SJeff Bonwick os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), &zp, 977*b24ab676SJeff Bonwick dmu_objset_write_ready, dmu_objset_write_done, os, 978e14bb325SJeff Bonwick ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); 979c717a561Smaybee 980c717a561Smaybee /* 98114843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 982c717a561Smaybee */ 983c717a561Smaybee os->os_meta_dnode->dn_zio = zio; 984c717a561Smaybee dnode_sync(os->os_meta_dnode, tx); 985c717a561Smaybee 98614843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 98714843421SMatthew Ahrens 98814843421SMatthew Ahrens if (os->os_userused_dnode && 98914843421SMatthew Ahrens os->os_userused_dnode->dn_type != DMU_OT_NONE) { 99014843421SMatthew Ahrens os->os_userused_dnode->dn_zio = zio; 99114843421SMatthew Ahrens dnode_sync(os->os_userused_dnode, tx); 99214843421SMatthew Ahrens os->os_groupused_dnode->dn_zio = zio; 99314843421SMatthew Ahrens dnode_sync(os->os_groupused_dnode, tx); 99414843421SMatthew Ahrens } 99514843421SMatthew Ahrens 996c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 997fa9e4066Sahrens 99814843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 99914843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 100014843421SMatthew Ahrens /* 100114843421SMatthew Ahrens * We must create the list here because it uses the 100214843421SMatthew Ahrens * dn_dirty_link[] of this txg. 100314843421SMatthew Ahrens */ 100414843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 100514843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 100614843421SMatthew Ahrens } 100714843421SMatthew Ahrens 100814843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 100914843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1010fa9e4066Sahrens 1011c717a561Smaybee list = &os->os_meta_dnode->dn_dirty_records[txgoff]; 1012c717a561Smaybee while (dr = list_head(list)) { 1013c717a561Smaybee ASSERT(dr->dr_dbuf->db_level == 0); 1014c717a561Smaybee list_remove(list, dr); 1015c717a561Smaybee if (dr->dr_zio) 1016c717a561Smaybee zio_nowait(dr->dr_zio); 1017c717a561Smaybee } 1018c717a561Smaybee /* 1019c717a561Smaybee * Free intent log blocks up to this tx. 1020c717a561Smaybee */ 1021c717a561Smaybee zil_sync(os->os_zil, tx); 1022088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 1023c717a561Smaybee zio_nowait(zio); 1024fa9e4066Sahrens } 1025fa9e4066Sahrens 1026*b24ab676SJeff Bonwick boolean_t 1027*b24ab676SJeff Bonwick dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1028*b24ab676SJeff Bonwick { 1029*b24ab676SJeff Bonwick return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1030*b24ab676SJeff Bonwick !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1031*b24ab676SJeff Bonwick } 1032*b24ab676SJeff Bonwick 103314843421SMatthew Ahrens static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 103414843421SMatthew Ahrens 103514843421SMatthew Ahrens void 103614843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 103714843421SMatthew Ahrens { 103814843421SMatthew Ahrens used_cbs[ost] = cb; 103914843421SMatthew Ahrens } 104014843421SMatthew Ahrens 104114843421SMatthew Ahrens boolean_t 1042503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 104314843421SMatthew Ahrens { 104414843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 104514843421SMatthew Ahrens used_cbs[os->os_phys->os_type] && 104614843421SMatthew Ahrens os->os_userused_dnode); 104714843421SMatthew Ahrens } 104814843421SMatthew Ahrens 10499966ca11SMatthew Ahrens static void 10509966ca11SMatthew Ahrens do_userquota_callback(objset_t *os, dnode_phys_t *dnp, 10519966ca11SMatthew Ahrens boolean_t subtract, dmu_tx_t *tx) 10529966ca11SMatthew Ahrens { 10539966ca11SMatthew Ahrens static const char zerobuf[DN_MAX_BONUSLEN] = {0}; 10549966ca11SMatthew Ahrens uint64_t user, group; 10559966ca11SMatthew Ahrens 10569966ca11SMatthew Ahrens ASSERT(dnp->dn_type != 0 || 10579966ca11SMatthew Ahrens (bcmp(DN_BONUS(dnp), zerobuf, DN_MAX_BONUSLEN) == 0 && 10589966ca11SMatthew Ahrens DN_USED_BYTES(dnp) == 0)); 10599966ca11SMatthew Ahrens 10609966ca11SMatthew Ahrens if ((dnp->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) && 10619966ca11SMatthew Ahrens 0 == used_cbs[os->os_phys->os_type](dnp->dn_bonustype, 10629966ca11SMatthew Ahrens DN_BONUS(dnp), &user, &group)) { 10639966ca11SMatthew Ahrens int64_t delta = DNODE_SIZE + DN_USED_BYTES(dnp); 10649966ca11SMatthew Ahrens if (subtract) 10659966ca11SMatthew Ahrens delta = -delta; 1066c33e334fSMatthew Ahrens VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 10679966ca11SMatthew Ahrens user, delta, tx)); 1068c33e334fSMatthew Ahrens VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 10699966ca11SMatthew Ahrens group, delta, tx)); 10709966ca11SMatthew Ahrens } 10719966ca11SMatthew Ahrens } 10729966ca11SMatthew Ahrens 107314843421SMatthew Ahrens void 1074503ad85cSMatthew Ahrens dmu_objset_do_userquota_callbacks(objset_t *os, dmu_tx_t *tx) 107514843421SMatthew Ahrens { 107614843421SMatthew Ahrens dnode_t *dn; 107714843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 107814843421SMatthew Ahrens 107914843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 108014843421SMatthew Ahrens 108114843421SMatthew Ahrens while (dn = list_head(list)) { 108214843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 108314843421SMatthew Ahrens ASSERT(dn->dn_oldphys); 108414843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 108514843421SMatthew Ahrens dn->dn_phys->dn_flags & 108614843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 108714843421SMatthew Ahrens 108814843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 108914843421SMatthew Ahrens if (os->os_userused_dnode->dn_type == DMU_OT_NONE) { 1090503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 109114843421SMatthew Ahrens DMU_USERUSED_OBJECT, 109214843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1093503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 109414843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 109514843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 109614843421SMatthew Ahrens } 109714843421SMatthew Ahrens 109814843421SMatthew Ahrens /* 10999966ca11SMatthew Ahrens * We intentionally modify the zap object even if the 11009966ca11SMatthew Ahrens * net delta (due to phys-oldphys) is zero. Otherwise 11019966ca11SMatthew Ahrens * the block of the zap obj could be shared between 11029966ca11SMatthew Ahrens * datasets but need to be different between them after 11039966ca11SMatthew Ahrens * a bprewrite. 110414843421SMatthew Ahrens */ 11059966ca11SMatthew Ahrens do_userquota_callback(os, dn->dn_oldphys, B_TRUE, tx); 11069966ca11SMatthew Ahrens do_userquota_callback(os, dn->dn_phys, B_FALSE, tx); 110714843421SMatthew Ahrens 110814843421SMatthew Ahrens /* 110914843421SMatthew Ahrens * The mutex is needed here for interlock with dnode_allocate. 111014843421SMatthew Ahrens */ 111114843421SMatthew Ahrens mutex_enter(&dn->dn_mtx); 111214843421SMatthew Ahrens zio_buf_free(dn->dn_oldphys, sizeof (dnode_phys_t)); 111314843421SMatthew Ahrens dn->dn_oldphys = NULL; 111414843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 111514843421SMatthew Ahrens 111614843421SMatthew Ahrens list_remove(list, dn); 111714843421SMatthew Ahrens dnode_rele(dn, list); 111814843421SMatthew Ahrens } 111914843421SMatthew Ahrens } 112014843421SMatthew Ahrens 112114843421SMatthew Ahrens boolean_t 112214843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 112314843421SMatthew Ahrens { 1124503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 112514843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 112614843421SMatthew Ahrens } 112714843421SMatthew Ahrens 112814843421SMatthew Ahrens int 112914843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 113014843421SMatthew Ahrens { 113114843421SMatthew Ahrens uint64_t obj; 113214843421SMatthew Ahrens int err = 0; 113314843421SMatthew Ahrens 113414843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 113514843421SMatthew Ahrens return (0); 1136503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 113714843421SMatthew Ahrens return (ENOTSUP); 113814843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 113914843421SMatthew Ahrens return (EINVAL); 114014843421SMatthew Ahrens 114114843421SMatthew Ahrens /* 114214843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 114314843421SMatthew Ahrens * synced out and now accounted. If this is called 114414843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 114514843421SMatthew Ahrens * that's fine, since we track each object's accounted state 114614843421SMatthew Ahrens * independently. 114714843421SMatthew Ahrens */ 114814843421SMatthew Ahrens 114914843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 115068857716SLin Ling dmu_tx_t *tx; 115114843421SMatthew Ahrens dmu_buf_t *db; 115214843421SMatthew Ahrens int objerr; 115314843421SMatthew Ahrens 115414843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 115514843421SMatthew Ahrens return (EINTR); 115614843421SMatthew Ahrens 115714843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 115814843421SMatthew Ahrens if (objerr) 115914843421SMatthew Ahrens continue; 116068857716SLin Ling tx = dmu_tx_create(os); 116114843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 116214843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 116314843421SMatthew Ahrens if (objerr) { 116414843421SMatthew Ahrens dmu_tx_abort(tx); 116514843421SMatthew Ahrens continue; 116614843421SMatthew Ahrens } 116714843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 116814843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 116914843421SMatthew Ahrens dmu_tx_commit(tx); 117014843421SMatthew Ahrens } 117114843421SMatthew Ahrens 1172503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 117314843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 117414843421SMatthew Ahrens return (0); 117514843421SMatthew Ahrens } 117614843421SMatthew Ahrens 1177fa9e4066Sahrens void 1178a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1179a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1180fa9e4066Sahrens { 1181503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1182a2eea2e1Sahrens usedobjsp, availobjsp); 1183a2eea2e1Sahrens } 1184a2eea2e1Sahrens 1185a2eea2e1Sahrens uint64_t 1186a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1187a2eea2e1Sahrens { 1188503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1189a2eea2e1Sahrens } 1190a2eea2e1Sahrens 1191a2eea2e1Sahrens void 1192a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1193a2eea2e1Sahrens { 1194503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1195503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1196503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1197a2eea2e1Sahrens } 1198a2eea2e1Sahrens 1199a2eea2e1Sahrens void 1200a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1201a2eea2e1Sahrens { 1202503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1203503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1204a2eea2e1Sahrens 1205503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1206503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1207a2eea2e1Sahrens 1208a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1209503ad85cSMatthew Ahrens os->os_phys->os_type); 121014843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 121114843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1212fa9e4066Sahrens } 1213fa9e4066Sahrens 1214fa9e4066Sahrens int 1215fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1216fa9e4066Sahrens { 1217503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1218503ad85cSMatthew Ahrens return (dsl_dataset_is_snapshot(os->os_dsl_dataset)); 1219fa9e4066Sahrens else 1220fa9e4066Sahrens return (B_FALSE); 1221fa9e4066Sahrens } 1222fa9e4066Sahrens 1223ab04eb8eStimh int 1224ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1225ab04eb8eStimh boolean_t *conflict) 1226ab04eb8eStimh { 1227503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1228ab04eb8eStimh uint64_t ignored; 1229ab04eb8eStimh 1230ab04eb8eStimh if (ds->ds_phys->ds_snapnames_zapobj == 0) 1231ab04eb8eStimh return (ENOENT); 1232ab04eb8eStimh 1233ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1234ab04eb8eStimh ds->ds_phys->ds_snapnames_zapobj, name, 8, 1, &ignored, MT_FIRST, 1235ab04eb8eStimh real, maxlen, conflict)); 1236ab04eb8eStimh } 1237ab04eb8eStimh 1238fa9e4066Sahrens int 1239fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1240b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1241fa9e4066Sahrens { 1242503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1243fa9e4066Sahrens zap_cursor_t cursor; 1244fa9e4066Sahrens zap_attribute_t attr; 1245fa9e4066Sahrens 1246fa9e4066Sahrens if (ds->ds_phys->ds_snapnames_zapobj == 0) 1247fa9e4066Sahrens return (ENOENT); 1248fa9e4066Sahrens 1249fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1250fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1251fa9e4066Sahrens ds->ds_phys->ds_snapnames_zapobj, *offp); 1252fa9e4066Sahrens 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); 126087e5029aSahrens return (ENAMETOOLONG); 126187e5029aSahrens } 126287e5029aSahrens 126387e5029aSahrens (void) strcpy(name, attr.za_name); 126487e5029aSahrens if (idp) 126587e5029aSahrens *idp = attr.za_first_integer; 1266b38f0970Sck if (case_conflict) 1267b38f0970Sck *case_conflict = attr.za_normalization_conflict; 126887e5029aSahrens zap_cursor_advance(&cursor); 126987e5029aSahrens *offp = zap_cursor_serialize(&cursor); 127087e5029aSahrens zap_cursor_fini(&cursor); 127187e5029aSahrens 127287e5029aSahrens return (0); 127387e5029aSahrens } 127487e5029aSahrens 127587e5029aSahrens int 127687e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 127787e5029aSahrens uint64_t *idp, uint64_t *offp) 127887e5029aSahrens { 1279503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 128087e5029aSahrens zap_cursor_t cursor; 128187e5029aSahrens zap_attribute_t attr; 128287e5029aSahrens 128387e5029aSahrens /* there is no next dir on a snapshot! */ 1284503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 128587e5029aSahrens dd->dd_phys->dd_head_dataset_obj) 1286fa9e4066Sahrens return (ENOENT); 1287fa9e4066Sahrens 128887e5029aSahrens zap_cursor_init_serialized(&cursor, 128987e5029aSahrens dd->dd_pool->dp_meta_objset, 129087e5029aSahrens dd->dd_phys->dd_child_dir_zapobj, *offp); 129187e5029aSahrens 129287e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 129387e5029aSahrens zap_cursor_fini(&cursor); 129487e5029aSahrens return (ENOENT); 129587e5029aSahrens } 129687e5029aSahrens 129787e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 129887e5029aSahrens zap_cursor_fini(&cursor); 1299fa9e4066Sahrens return (ENAMETOOLONG); 130087e5029aSahrens } 1301fa9e4066Sahrens 1302fa9e4066Sahrens (void) strcpy(name, attr.za_name); 130387e5029aSahrens if (idp) 130487e5029aSahrens *idp = attr.za_first_integer; 1305fa9e4066Sahrens zap_cursor_advance(&cursor); 1306fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 130787e5029aSahrens zap_cursor_fini(&cursor); 1308fa9e4066Sahrens 1309fa9e4066Sahrens return (0); 1310fa9e4066Sahrens } 1311fa9e4066Sahrens 1312088f3894Sahrens struct findarg { 1313088f3894Sahrens int (*func)(char *, void *); 1314088f3894Sahrens void *arg; 1315088f3894Sahrens }; 1316088f3894Sahrens 1317088f3894Sahrens /* ARGSUSED */ 1318088f3894Sahrens static int 1319088f3894Sahrens findfunc(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg) 1320088f3894Sahrens { 1321088f3894Sahrens struct findarg *fa = arg; 1322088f3894Sahrens return (fa->func((char *)dsname, fa->arg)); 1323088f3894Sahrens } 1324088f3894Sahrens 1325fa9e4066Sahrens /* 1326fa9e4066Sahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 1327088f3894Sahrens * Perhaps change all callers to use dmu_objset_find_spa()? 1328fa9e4066Sahrens */ 13291d452cf5Sahrens int 13301d452cf5Sahrens dmu_objset_find(char *name, int func(char *, void *), void *arg, int flags) 1331088f3894Sahrens { 1332088f3894Sahrens struct findarg fa; 1333088f3894Sahrens fa.func = func; 1334088f3894Sahrens fa.arg = arg; 1335088f3894Sahrens return (dmu_objset_find_spa(NULL, name, findfunc, &fa, flags)); 1336088f3894Sahrens } 1337088f3894Sahrens 1338088f3894Sahrens /* 1339088f3894Sahrens * Find all objsets under name, call func on each 1340088f3894Sahrens */ 1341088f3894Sahrens int 1342088f3894Sahrens dmu_objset_find_spa(spa_t *spa, const char *name, 1343088f3894Sahrens int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags) 1344fa9e4066Sahrens { 1345fa9e4066Sahrens dsl_dir_t *dd; 1346088f3894Sahrens dsl_pool_t *dp; 1347088f3894Sahrens dsl_dataset_t *ds; 1348fa9e4066Sahrens zap_cursor_t zc; 1349b7661cccSmmusante zap_attribute_t *attr; 1350fa9e4066Sahrens char *child; 1351088f3894Sahrens uint64_t thisobj; 1352088f3894Sahrens int err; 1353fa9e4066Sahrens 1354088f3894Sahrens if (name == NULL) 1355088f3894Sahrens name = spa_name(spa); 1356088f3894Sahrens err = dsl_dir_open_spa(spa, name, FTAG, &dd, NULL); 1357ea8dc4b6Seschrock if (err) 13581d452cf5Sahrens return (err); 1359fa9e4066Sahrens 1360088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1361088f3894Sahrens if (dd->dd_myname[0] == '$') { 1362088f3894Sahrens dsl_dir_close(dd, FTAG); 1363088f3894Sahrens return (0); 1364088f3894Sahrens } 1365088f3894Sahrens 1366088f3894Sahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 1367b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1368088f3894Sahrens dp = dd->dd_pool; 1369fa9e4066Sahrens 1370fa9e4066Sahrens /* 1371fa9e4066Sahrens * Iterate over all children. 1372fa9e4066Sahrens */ 13730b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1374088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 13750b69c2f0Sahrens dd->dd_phys->dd_child_dir_zapobj); 1376b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 13770b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 1378b7661cccSmmusante ASSERT(attr->za_integer_length == sizeof (uint64_t)); 1379b7661cccSmmusante ASSERT(attr->za_num_integers == 1); 1380fa9e4066Sahrens 13810b69c2f0Sahrens child = kmem_alloc(MAXPATHLEN, KM_SLEEP); 1382088f3894Sahrens (void) strcpy(child, name); 13830b69c2f0Sahrens (void) strcat(child, "/"); 1384b7661cccSmmusante (void) strcat(child, attr->za_name); 1385088f3894Sahrens err = dmu_objset_find_spa(spa, child, func, arg, flags); 13860b69c2f0Sahrens kmem_free(child, MAXPATHLEN); 13870b69c2f0Sahrens if (err) 13880b69c2f0Sahrens break; 13890b69c2f0Sahrens } 13900b69c2f0Sahrens zap_cursor_fini(&zc); 13911d452cf5Sahrens 13920b69c2f0Sahrens if (err) { 13930b69c2f0Sahrens dsl_dir_close(dd, FTAG); 1394b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 13950b69c2f0Sahrens return (err); 13960b69c2f0Sahrens } 1397fa9e4066Sahrens } 1398fa9e4066Sahrens 1399fa9e4066Sahrens /* 1400fa9e4066Sahrens * Iterate over all snapshots. 1401fa9e4066Sahrens */ 1402088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1403088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1404088f3894Sahrens rw_enter(&dp->dp_config_rwlock, RW_READER); 1405088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1406088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1407088f3894Sahrens rw_exit(&dp->dp_config_rwlock); 1408088f3894Sahrens 1409088f3894Sahrens if (err == 0) { 1410088f3894Sahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 1411088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1412088f3894Sahrens 1413088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1414088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1415088f3894Sahrens (void) zap_cursor_advance(&zc)) { 1416088f3894Sahrens ASSERT(attr->za_integer_length == 1417088f3894Sahrens sizeof (uint64_t)); 1418088f3894Sahrens ASSERT(attr->za_num_integers == 1); 1419088f3894Sahrens 1420088f3894Sahrens child = kmem_alloc(MAXPATHLEN, KM_SLEEP); 1421088f3894Sahrens (void) strcpy(child, name); 1422088f3894Sahrens (void) strcat(child, "@"); 1423088f3894Sahrens (void) strcat(child, attr->za_name); 1424088f3894Sahrens err = func(spa, attr->za_first_integer, 1425088f3894Sahrens child, arg); 1426088f3894Sahrens kmem_free(child, MAXPATHLEN); 1427088f3894Sahrens if (err) 1428088f3894Sahrens break; 1429088f3894Sahrens } 1430088f3894Sahrens zap_cursor_fini(&zc); 1431fa9e4066Sahrens } 1432fa9e4066Sahrens } 1433fa9e4066Sahrens 1434fa9e4066Sahrens dsl_dir_close(dd, FTAG); 1435b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 1436fa9e4066Sahrens 14371d452cf5Sahrens if (err) 14381d452cf5Sahrens return (err); 14391d452cf5Sahrens 1440fa9e4066Sahrens /* 1441fa9e4066Sahrens * Apply to self if appropriate. 1442fa9e4066Sahrens */ 1443088f3894Sahrens err = func(spa, thisobj, name, arg); 14441d452cf5Sahrens return (err); 1445fa9e4066Sahrens } 1446f18faf3fSek 14477f73c863SRich Morris /* ARGSUSED */ 14487f73c863SRich Morris int 14497f73c863SRich Morris dmu_objset_prefetch(char *name, void *arg) 14507f73c863SRich Morris { 14517f73c863SRich Morris dsl_dataset_t *ds; 14527f73c863SRich Morris 14537f73c863SRich Morris if (dsl_dataset_hold(name, FTAG, &ds)) 14547f73c863SRich Morris return (0); 14557f73c863SRich Morris 14567f73c863SRich Morris if (!BP_IS_HOLE(&ds->ds_phys->ds_bp)) { 14577f73c863SRich Morris mutex_enter(&ds->ds_opening_lock); 1458503ad85cSMatthew Ahrens if (ds->ds_objset == NULL) { 14597f73c863SRich Morris uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH; 14607f73c863SRich Morris zbookmark_t zb; 14617f73c863SRich Morris 1462*b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, 1463*b24ab676SJeff Bonwick ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 14647f73c863SRich Morris 14657f73c863SRich Morris (void) arc_read_nolock(NULL, dsl_dataset_get_spa(ds), 14667f73c863SRich Morris &ds->ds_phys->ds_bp, NULL, NULL, 14677f73c863SRich Morris ZIO_PRIORITY_ASYNC_READ, 14687f73c863SRich Morris ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE, 14697f73c863SRich Morris &aflags, &zb); 14707f73c863SRich Morris } 14717f73c863SRich Morris mutex_exit(&ds->ds_opening_lock); 14727f73c863SRich Morris } 14737f73c863SRich Morris 14747f73c863SRich Morris dsl_dataset_rele(ds, FTAG); 14757f73c863SRich Morris return (0); 14767f73c863SRich Morris } 14777f73c863SRich Morris 1478f18faf3fSek void 1479f18faf3fSek dmu_objset_set_user(objset_t *os, void *user_ptr) 1480f18faf3fSek { 1481503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1482503ad85cSMatthew Ahrens os->os_user_ptr = user_ptr; 1483f18faf3fSek } 1484f18faf3fSek 1485f18faf3fSek void * 1486f18faf3fSek dmu_objset_get_user(objset_t *os) 1487f18faf3fSek { 1488503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1489503ad85cSMatthew Ahrens return (os->os_user_ptr); 1490f18faf3fSek } 1491