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> 43*486ae710SMatthew Ahrens #include <sys/sunddi.h> 44fa9e4066Sahrens 45fa9e4066Sahrens spa_t * 46fa9e4066Sahrens dmu_objset_spa(objset_t *os) 47fa9e4066Sahrens { 48503ad85cSMatthew Ahrens return (os->os_spa); 49fa9e4066Sahrens } 50fa9e4066Sahrens 51fa9e4066Sahrens zilog_t * 52fa9e4066Sahrens dmu_objset_zil(objset_t *os) 53fa9e4066Sahrens { 54503ad85cSMatthew Ahrens return (os->os_zil); 55fa9e4066Sahrens } 56fa9e4066Sahrens 57fa9e4066Sahrens dsl_pool_t * 58fa9e4066Sahrens dmu_objset_pool(objset_t *os) 59fa9e4066Sahrens { 60fa9e4066Sahrens dsl_dataset_t *ds; 61fa9e4066Sahrens 62503ad85cSMatthew Ahrens if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 63fa9e4066Sahrens return (ds->ds_dir->dd_pool); 64fa9e4066Sahrens else 65503ad85cSMatthew Ahrens return (spa_get_dsl(os->os_spa)); 66fa9e4066Sahrens } 67fa9e4066Sahrens 68fa9e4066Sahrens dsl_dataset_t * 69fa9e4066Sahrens dmu_objset_ds(objset_t *os) 70fa9e4066Sahrens { 71503ad85cSMatthew Ahrens return (os->os_dsl_dataset); 72fa9e4066Sahrens } 73fa9e4066Sahrens 74fa9e4066Sahrens dmu_objset_type_t 75fa9e4066Sahrens dmu_objset_type(objset_t *os) 76fa9e4066Sahrens { 77503ad85cSMatthew Ahrens return (os->os_phys->os_type); 78fa9e4066Sahrens } 79fa9e4066Sahrens 80fa9e4066Sahrens void 81fa9e4066Sahrens dmu_objset_name(objset_t *os, char *buf) 82fa9e4066Sahrens { 83503ad85cSMatthew Ahrens dsl_dataset_name(os->os_dsl_dataset, buf); 84fa9e4066Sahrens } 85fa9e4066Sahrens 86fa9e4066Sahrens uint64_t 87fa9e4066Sahrens dmu_objset_id(objset_t *os) 88fa9e4066Sahrens { 89503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 90fa9e4066Sahrens 91fa9e4066Sahrens return (ds ? ds->ds_object : 0); 92fa9e4066Sahrens } 93fa9e4066Sahrens 94e09fa4daSNeil Perrin uint64_t 95e09fa4daSNeil Perrin dmu_objset_logbias(objset_t *os) 96e09fa4daSNeil Perrin { 97e09fa4daSNeil Perrin return (os->os_logbias); 98e09fa4daSNeil Perrin } 99e09fa4daSNeil Perrin 100fa9e4066Sahrens static void 101fa9e4066Sahrens checksum_changed_cb(void *arg, uint64_t newval) 102fa9e4066Sahrens { 103503ad85cSMatthew Ahrens objset_t *os = arg; 104fa9e4066Sahrens 105fa9e4066Sahrens /* 106fa9e4066Sahrens * Inheritance should have been done by now. 107fa9e4066Sahrens */ 108fa9e4066Sahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 109fa9e4066Sahrens 110503ad85cSMatthew Ahrens os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 111fa9e4066Sahrens } 112fa9e4066Sahrens 113fa9e4066Sahrens static void 114fa9e4066Sahrens compression_changed_cb(void *arg, uint64_t newval) 115fa9e4066Sahrens { 116503ad85cSMatthew Ahrens objset_t *os = arg; 117fa9e4066Sahrens 118fa9e4066Sahrens /* 119fa9e4066Sahrens * Inheritance and range checking should have been done by now. 120fa9e4066Sahrens */ 121fa9e4066Sahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 122fa9e4066Sahrens 123503ad85cSMatthew Ahrens os->os_compress = zio_compress_select(newval, ZIO_COMPRESS_ON_VALUE); 124fa9e4066Sahrens } 125fa9e4066Sahrens 126d0ad202dSahrens static void 127d0ad202dSahrens copies_changed_cb(void *arg, uint64_t newval) 128d0ad202dSahrens { 129503ad85cSMatthew Ahrens objset_t *os = arg; 130d0ad202dSahrens 131d0ad202dSahrens /* 132d0ad202dSahrens * Inheritance and range checking should have been done by now. 133d0ad202dSahrens */ 134d0ad202dSahrens ASSERT(newval > 0); 135503ad85cSMatthew Ahrens ASSERT(newval <= spa_max_replication(os->os_spa)); 136d0ad202dSahrens 137503ad85cSMatthew Ahrens os->os_copies = newval; 138d0ad202dSahrens } 139d0ad202dSahrens 140b24ab676SJeff Bonwick static void 141b24ab676SJeff Bonwick dedup_changed_cb(void *arg, uint64_t newval) 142b24ab676SJeff Bonwick { 143b24ab676SJeff Bonwick objset_t *os = arg; 144b24ab676SJeff Bonwick spa_t *spa = os->os_spa; 145b24ab676SJeff Bonwick enum zio_checksum checksum; 146b24ab676SJeff Bonwick 147b24ab676SJeff Bonwick /* 148b24ab676SJeff Bonwick * Inheritance should have been done by now. 149b24ab676SJeff Bonwick */ 150b24ab676SJeff Bonwick ASSERT(newval != ZIO_CHECKSUM_INHERIT); 151b24ab676SJeff Bonwick 152b24ab676SJeff Bonwick checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 153b24ab676SJeff Bonwick 154b24ab676SJeff Bonwick os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 155b24ab676SJeff Bonwick os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 156b24ab676SJeff Bonwick } 157b24ab676SJeff Bonwick 1583baa08fcSek static void 1593baa08fcSek primary_cache_changed_cb(void *arg, uint64_t newval) 1603baa08fcSek { 161503ad85cSMatthew Ahrens objset_t *os = arg; 1623baa08fcSek 1633baa08fcSek /* 1643baa08fcSek * Inheritance and range checking should have been done by now. 1653baa08fcSek */ 1663baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1673baa08fcSek newval == ZFS_CACHE_METADATA); 1683baa08fcSek 169503ad85cSMatthew Ahrens os->os_primary_cache = newval; 1703baa08fcSek } 1713baa08fcSek 1723baa08fcSek static void 1733baa08fcSek secondary_cache_changed_cb(void *arg, uint64_t newval) 1743baa08fcSek { 175503ad85cSMatthew Ahrens objset_t *os = arg; 1763baa08fcSek 1773baa08fcSek /* 1783baa08fcSek * Inheritance and range checking should have been done by now. 1793baa08fcSek */ 1803baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 1813baa08fcSek newval == ZFS_CACHE_METADATA); 1823baa08fcSek 183503ad85cSMatthew Ahrens os->os_secondary_cache = newval; 1843baa08fcSek } 1853baa08fcSek 186e09fa4daSNeil Perrin static void 187e09fa4daSNeil Perrin logbias_changed_cb(void *arg, uint64_t newval) 188e09fa4daSNeil Perrin { 189e09fa4daSNeil Perrin objset_t *os = arg; 190e09fa4daSNeil Perrin 191e09fa4daSNeil Perrin ASSERT(newval == ZFS_LOGBIAS_LATENCY || 192e09fa4daSNeil Perrin newval == ZFS_LOGBIAS_THROUGHPUT); 193e09fa4daSNeil Perrin os->os_logbias = newval; 194e09fa4daSNeil Perrin if (os->os_zil) 195e09fa4daSNeil Perrin zil_set_logbias(os->os_zil, newval); 196e09fa4daSNeil Perrin } 197e09fa4daSNeil Perrin 198fa9e4066Sahrens void 199fa9e4066Sahrens dmu_objset_byteswap(void *buf, size_t size) 200fa9e4066Sahrens { 201fa9e4066Sahrens objset_phys_t *osp = buf; 202fa9e4066Sahrens 20314843421SMatthew Ahrens ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 204fa9e4066Sahrens dnode_byteswap(&osp->os_meta_dnode); 205fa9e4066Sahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 206fa9e4066Sahrens osp->os_type = BSWAP_64(osp->os_type); 20714843421SMatthew Ahrens osp->os_flags = BSWAP_64(osp->os_flags); 20814843421SMatthew Ahrens if (size == sizeof (objset_phys_t)) { 20914843421SMatthew Ahrens dnode_byteswap(&osp->os_userused_dnode); 21014843421SMatthew Ahrens dnode_byteswap(&osp->os_groupused_dnode); 21114843421SMatthew Ahrens } 212fa9e4066Sahrens } 213fa9e4066Sahrens 214ea8dc4b6Seschrock int 215ea8dc4b6Seschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 216503ad85cSMatthew Ahrens objset_t **osp) 217fa9e4066Sahrens { 218503ad85cSMatthew Ahrens objset_t *os; 219088f3894Sahrens int i, err; 220fa9e4066Sahrens 22191ebeef5Sahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 22291ebeef5Sahrens 223503ad85cSMatthew Ahrens os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 224503ad85cSMatthew Ahrens os->os_dsl_dataset = ds; 225503ad85cSMatthew Ahrens os->os_spa = spa; 226503ad85cSMatthew Ahrens os->os_rootbp = bp; 227503ad85cSMatthew Ahrens if (!BP_IS_HOLE(os->os_rootbp)) { 22813506d1eSmaybee uint32_t aflags = ARC_WAIT; 229ea8dc4b6Seschrock zbookmark_t zb; 230b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 231b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 232b24ab676SJeff Bonwick 233503ad85cSMatthew Ahrens if (DMU_OS_IS_L2CACHEABLE(os)) 2343baa08fcSek aflags |= ARC_L2CACHE; 235ea8dc4b6Seschrock 236503ad85cSMatthew Ahrens dprintf_bp(os->os_rootbp, "reading %s", ""); 237088f3894Sahrens /* 238088f3894Sahrens * NB: when bprewrite scrub can change the bp, 239088f3894Sahrens * and this is called from dmu_objset_open_ds_os, the bp 240088f3894Sahrens * could change, and we'll need a lock. 241088f3894Sahrens */ 242503ad85cSMatthew Ahrens err = arc_read_nolock(NULL, spa, os->os_rootbp, 243503ad85cSMatthew Ahrens arc_getbuf_func, &os->os_phys_buf, 24413506d1eSmaybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 245ea8dc4b6Seschrock if (err) { 246503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 247b87f3af3Sperrin /* convert checksum errors into IO errors */ 248b87f3af3Sperrin if (err == ECKSUM) 249b87f3af3Sperrin err = EIO; 250ea8dc4b6Seschrock return (err); 251ea8dc4b6Seschrock } 25214843421SMatthew Ahrens 25314843421SMatthew Ahrens /* Increase the blocksize if we are permitted. */ 25414843421SMatthew Ahrens if (spa_version(spa) >= SPA_VERSION_USERSPACE && 255503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 25614843421SMatthew Ahrens arc_buf_t *buf = arc_buf_alloc(spa, 257503ad85cSMatthew Ahrens sizeof (objset_phys_t), &os->os_phys_buf, 25814843421SMatthew Ahrens ARC_BUFC_METADATA); 25914843421SMatthew Ahrens bzero(buf->b_data, sizeof (objset_phys_t)); 260503ad85cSMatthew Ahrens bcopy(os->os_phys_buf->b_data, buf->b_data, 261503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf)); 262503ad85cSMatthew Ahrens (void) arc_buf_remove_ref(os->os_phys_buf, 263503ad85cSMatthew Ahrens &os->os_phys_buf); 264503ad85cSMatthew Ahrens os->os_phys_buf = buf; 26514843421SMatthew Ahrens } 26614843421SMatthew Ahrens 267503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 268503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 269fa9e4066Sahrens } else { 27014843421SMatthew Ahrens int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 27114843421SMatthew Ahrens sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 272503ad85cSMatthew Ahrens os->os_phys_buf = arc_buf_alloc(spa, size, 273503ad85cSMatthew Ahrens &os->os_phys_buf, ARC_BUFC_METADATA); 274503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 275503ad85cSMatthew Ahrens bzero(os->os_phys, size); 276fa9e4066Sahrens } 277fa9e4066Sahrens 278fa9e4066Sahrens /* 279fa9e4066Sahrens * Note: the changed_cb will be called once before the register 280fa9e4066Sahrens * func returns, thus changing the checksum/compression from the 2813baa08fcSek * default (fletcher2/off). Snapshots don't need to know about 2823baa08fcSek * checksum/compression/copies. 283fa9e4066Sahrens */ 2843baa08fcSek if (ds) { 2853baa08fcSek err = dsl_prop_register(ds, "primarycache", 286503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 287d0ad202dSahrens if (err == 0) 2883baa08fcSek err = dsl_prop_register(ds, "secondarycache", 289503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 2903baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 2913baa08fcSek if (err == 0) 2923baa08fcSek err = dsl_prop_register(ds, "checksum", 293503ad85cSMatthew Ahrens checksum_changed_cb, os); 2943baa08fcSek if (err == 0) 2953baa08fcSek err = dsl_prop_register(ds, "compression", 296503ad85cSMatthew Ahrens compression_changed_cb, os); 2973baa08fcSek if (err == 0) 2983baa08fcSek err = dsl_prop_register(ds, "copies", 299503ad85cSMatthew Ahrens copies_changed_cb, os); 300b24ab676SJeff Bonwick if (err == 0) 301b24ab676SJeff Bonwick err = dsl_prop_register(ds, "dedup", 302b24ab676SJeff Bonwick dedup_changed_cb, os); 303e09fa4daSNeil Perrin if (err == 0) 304e09fa4daSNeil Perrin err = dsl_prop_register(ds, "logbias", 305e09fa4daSNeil Perrin logbias_changed_cb, os); 3063baa08fcSek } 307ea8dc4b6Seschrock if (err) { 308503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 309503ad85cSMatthew Ahrens &os->os_phys_buf) == 1); 310503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 311ea8dc4b6Seschrock return (err); 312ea8dc4b6Seschrock } 31399653d4eSeschrock } else if (ds == NULL) { 314fa9e4066Sahrens /* It's the meta-objset. */ 315503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 316503ad85cSMatthew Ahrens os->os_compress = ZIO_COMPRESS_LZJB; 317503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 318b24ab676SJeff Bonwick os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 319b24ab676SJeff Bonwick os->os_dedup_verify = 0; 320b24ab676SJeff Bonwick os->os_logbias = 0; 321503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 322503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 323fa9e4066Sahrens } 324fa9e4066Sahrens 325503ad85cSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 326503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 327fa9e4066Sahrens 328fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 329503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 330fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 331503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 332fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 333fa9e4066Sahrens } 334503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 335fa9e4066Sahrens offsetof(dnode_t, dn_link)); 336503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 337fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 338fa9e4066Sahrens 339503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 340503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 341503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 342503ad85cSMatthew Ahrens 343503ad85cSMatthew Ahrens os->os_meta_dnode = dnode_special_open(os, 344503ad85cSMatthew Ahrens &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT); 345503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 346503ad85cSMatthew Ahrens os->os_userused_dnode = dnode_special_open(os, 347503ad85cSMatthew Ahrens &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT); 348503ad85cSMatthew Ahrens os->os_groupused_dnode = dnode_special_open(os, 349503ad85cSMatthew Ahrens &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT); 35014843421SMatthew Ahrens } 351fa9e4066Sahrens 35291ebeef5Sahrens /* 35391ebeef5Sahrens * We should be the only thread trying to do this because we 35491ebeef5Sahrens * have ds_opening_lock 35591ebeef5Sahrens */ 35691ebeef5Sahrens if (ds) { 357503ad85cSMatthew Ahrens mutex_enter(&ds->ds_lock); 358503ad85cSMatthew Ahrens ASSERT(ds->ds_objset == NULL); 359503ad85cSMatthew Ahrens ds->ds_objset = os; 360503ad85cSMatthew Ahrens mutex_exit(&ds->ds_lock); 361fa9e4066Sahrens } 362fa9e4066Sahrens 363503ad85cSMatthew Ahrens *osp = os; 364ea8dc4b6Seschrock return (0); 365fa9e4066Sahrens } 366fa9e4066Sahrens 367503ad85cSMatthew Ahrens int 368503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 3693cb34c60Sahrens { 370503ad85cSMatthew Ahrens int err = 0; 3713cb34c60Sahrens 3723cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 373503ad85cSMatthew Ahrens *osp = ds->ds_objset; 374503ad85cSMatthew Ahrens if (*osp == NULL) { 3753cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 376503ad85cSMatthew Ahrens ds, &ds->ds_phys->ds_bp, osp); 3773cb34c60Sahrens } 3783cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 379503ad85cSMatthew Ahrens return (err); 3803cb34c60Sahrens } 3813cb34c60Sahrens 382503ad85cSMatthew Ahrens /* called from zpl */ 3833cb34c60Sahrens int 384503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 3853cb34c60Sahrens { 386503ad85cSMatthew Ahrens dsl_dataset_t *ds; 3873cb34c60Sahrens int err; 3883cb34c60Sahrens 389503ad85cSMatthew Ahrens err = dsl_dataset_hold(name, tag, &ds); 3903cb34c60Sahrens if (err) 391503ad85cSMatthew Ahrens return (err); 392503ad85cSMatthew Ahrens 393503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 394503ad85cSMatthew Ahrens if (err) 395503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 396503ad85cSMatthew Ahrens 3973cb34c60Sahrens return (err); 3983cb34c60Sahrens } 3993cb34c60Sahrens 400fa9e4066Sahrens /* called from zpl */ 401fa9e4066Sahrens int 402503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 403503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 404fa9e4066Sahrens { 405f18faf3fSek dsl_dataset_t *ds; 406f18faf3fSek int err; 407fa9e4066Sahrens 408503ad85cSMatthew Ahrens err = dsl_dataset_own(name, B_FALSE, tag, &ds); 409503ad85cSMatthew Ahrens if (err) 410fa9e4066Sahrens return (err); 411fa9e4066Sahrens 412503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 4133cb34c60Sahrens if (err) { 414503ad85cSMatthew Ahrens dsl_dataset_disown(ds, tag); 415681d9761SEric Taylor } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 416503ad85cSMatthew Ahrens dmu_objset_disown(*osp, tag); 417503ad85cSMatthew Ahrens return (EINVAL); 418681d9761SEric Taylor } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 419681d9761SEric Taylor dmu_objset_disown(*osp, tag); 420681d9761SEric Taylor return (EROFS); 421fa9e4066Sahrens } 4223cb34c60Sahrens return (err); 423fa9e4066Sahrens } 424fa9e4066Sahrens 425fa9e4066Sahrens void 426503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 427fa9e4066Sahrens { 428503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 429503ad85cSMatthew Ahrens } 430503ad85cSMatthew Ahrens 431503ad85cSMatthew Ahrens void 432503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 433503ad85cSMatthew Ahrens { 434503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 435fa9e4066Sahrens } 436fa9e4066Sahrens 437436b2950Sperrin int 4381934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 439ea8dc4b6Seschrock { 440ea8dc4b6Seschrock dnode_t *dn; 441c543ec06Sahrens 442503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 443c543ec06Sahrens 444c543ec06Sahrens /* process the mdn last, since the other dnodes have holds on it */ 445503ad85cSMatthew Ahrens list_remove(&os->os_dnodes, os->os_meta_dnode); 446503ad85cSMatthew Ahrens list_insert_tail(&os->os_dnodes, os->os_meta_dnode); 447ea8dc4b6Seschrock 448ea8dc4b6Seschrock /* 449c543ec06Sahrens * Find the first dnode with holds. We have to do this dance 450c543ec06Sahrens * because dnode_add_ref() only works if you already have a 451c543ec06Sahrens * hold. If there are no holds then it has no dbufs so OK to 452c543ec06Sahrens * skip. 453ea8dc4b6Seschrock */ 454503ad85cSMatthew Ahrens for (dn = list_head(&os->os_dnodes); 4551934e92fSmaybee dn && !dnode_add_ref(dn, FTAG); 456503ad85cSMatthew Ahrens dn = list_next(&os->os_dnodes, dn)) 457c543ec06Sahrens continue; 458c543ec06Sahrens 459c543ec06Sahrens while (dn) { 460c543ec06Sahrens dnode_t *next_dn = dn; 461c543ec06Sahrens 462c543ec06Sahrens do { 463503ad85cSMatthew Ahrens next_dn = list_next(&os->os_dnodes, next_dn); 4641934e92fSmaybee } while (next_dn && !dnode_add_ref(next_dn, FTAG)); 465c543ec06Sahrens 466503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 4671934e92fSmaybee dnode_evict_dbufs(dn); 468c543ec06Sahrens dnode_rele(dn, FTAG); 469503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 470c543ec06Sahrens dn = next_dn; 471ea8dc4b6Seschrock } 472503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 473503ad85cSMatthew Ahrens return (list_head(&os->os_dnodes) != os->os_meta_dnode); 474ea8dc4b6Seschrock } 475ea8dc4b6Seschrock 476fa9e4066Sahrens void 477503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 478fa9e4066Sahrens { 479503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 480fa9e4066Sahrens 481b24ab676SJeff Bonwick for (int t = 0; t < TXG_SIZE; t++) 482b24ab676SJeff Bonwick ASSERT(!dmu_objset_is_dirty(os, t)); 483fa9e4066Sahrens 4843baa08fcSek if (ds) { 4853baa08fcSek if (!dsl_dataset_is_snapshot(ds)) { 4863baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "checksum", 487503ad85cSMatthew Ahrens checksum_changed_cb, os)); 4883baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "compression", 489503ad85cSMatthew Ahrens compression_changed_cb, os)); 4903baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "copies", 491503ad85cSMatthew Ahrens copies_changed_cb, os)); 492b24ab676SJeff Bonwick VERIFY(0 == dsl_prop_unregister(ds, "dedup", 493b24ab676SJeff Bonwick dedup_changed_cb, os)); 494e09fa4daSNeil Perrin VERIFY(0 == dsl_prop_unregister(ds, "logbias", 495e09fa4daSNeil Perrin logbias_changed_cb, os)); 4963baa08fcSek } 4973baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "primarycache", 498503ad85cSMatthew Ahrens primary_cache_changed_cb, os)); 4993baa08fcSek VERIFY(0 == dsl_prop_unregister(ds, "secondarycache", 500503ad85cSMatthew Ahrens secondary_cache_changed_cb, os)); 501fa9e4066Sahrens } 502fa9e4066Sahrens 503ea8dc4b6Seschrock /* 504ea8dc4b6Seschrock * We should need only a single pass over the dnode list, since 505ea8dc4b6Seschrock * nothing can be added to the list at this point. 506ea8dc4b6Seschrock */ 507503ad85cSMatthew Ahrens (void) dmu_objset_evict_dbufs(os); 508ea8dc4b6Seschrock 509503ad85cSMatthew Ahrens dnode_special_close(os->os_meta_dnode); 510503ad85cSMatthew Ahrens if (os->os_userused_dnode) { 511503ad85cSMatthew Ahrens dnode_special_close(os->os_userused_dnode); 512503ad85cSMatthew Ahrens dnode_special_close(os->os_groupused_dnode); 51314843421SMatthew Ahrens } 514503ad85cSMatthew Ahrens zil_free(os->os_zil); 515fa9e4066Sahrens 516503ad85cSMatthew Ahrens ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 51714843421SMatthew Ahrens 518503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf) == 1); 519503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 520503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 521503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 522503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 523fa9e4066Sahrens } 524fa9e4066Sahrens 52571eb0538SChris Kirby timestruc_t 52671eb0538SChris Kirby dmu_objset_snap_cmtime(objset_t *os) 52771eb0538SChris Kirby { 52871eb0538SChris Kirby return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 52971eb0538SChris Kirby } 53071eb0538SChris Kirby 531fa9e4066Sahrens /* called from dsl for meta-objset */ 532503ad85cSMatthew Ahrens objset_t * 533c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 534c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 535fa9e4066Sahrens { 536503ad85cSMatthew Ahrens objset_t *os; 537fa9e4066Sahrens dnode_t *mdn; 538fa9e4066Sahrens 539fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 54091ebeef5Sahrens if (ds) 54191ebeef5Sahrens mutex_enter(&ds->ds_opening_lock); 542503ad85cSMatthew Ahrens VERIFY(0 == dmu_objset_open_impl(spa, ds, bp, &os)); 54391ebeef5Sahrens if (ds) 54491ebeef5Sahrens mutex_exit(&ds->ds_opening_lock); 545503ad85cSMatthew Ahrens mdn = os->os_meta_dnode; 546fa9e4066Sahrens 547fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 548fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 549fa9e4066Sahrens 550fa9e4066Sahrens /* 551fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 552fa9e4066Sahrens * later, because then we could do it in quescing context while 553fa9e4066Sahrens * we are also accessing it in open context. 554fa9e4066Sahrens * 555fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 556fa9e4066Sahrens * because the MOS is only updated in syncing context. 557fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 558fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 559fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 560fa9e4066Sahrens */ 561ea8dc4b6Seschrock if (ds != NULL) { 562ea8dc4b6Seschrock int levels = 1; 563ea8dc4b6Seschrock 564ea8dc4b6Seschrock /* 565ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 566ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 567ea8dc4b6Seschrock */ 568ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 569ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 570ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 571ea8dc4b6Seschrock levels++; 572ea8dc4b6Seschrock 573fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 574ea8dc4b6Seschrock mdn->dn_nlevels = levels; 575ea8dc4b6Seschrock } 576fa9e4066Sahrens 577fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 578fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 579fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 580503ad85cSMatthew Ahrens os->os_phys->os_type = type; 581503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 582503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 583503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 58414843421SMatthew Ahrens } 585fa9e4066Sahrens 586fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 587fa9e4066Sahrens 588503ad85cSMatthew Ahrens return (os); 589fa9e4066Sahrens } 590fa9e4066Sahrens 591fa9e4066Sahrens struct oscarg { 592ecd6cf80Smarks void (*userfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 593fa9e4066Sahrens void *userarg; 594ae46e4c7SMatthew Ahrens dsl_dataset_t *clone_origin; 595fa9e4066Sahrens const char *lastname; 596fa9e4066Sahrens dmu_objset_type_t type; 597ab04eb8eStimh uint64_t flags; 598fa9e4066Sahrens }; 599fa9e4066Sahrens 600ecd6cf80Smarks /*ARGSUSED*/ 601fa9e4066Sahrens static int 6021d452cf5Sahrens dmu_objset_create_check(void *arg1, void *arg2, dmu_tx_t *tx) 603fa9e4066Sahrens { 6041d452cf5Sahrens dsl_dir_t *dd = arg1; 6051d452cf5Sahrens struct oscarg *oa = arg2; 6061d452cf5Sahrens objset_t *mos = dd->dd_pool->dp_meta_objset; 607fa9e4066Sahrens int err; 6081d452cf5Sahrens uint64_t ddobj; 6091d452cf5Sahrens 6101d452cf5Sahrens err = zap_lookup(mos, dd->dd_phys->dd_child_dir_zapobj, 6111d452cf5Sahrens oa->lastname, sizeof (uint64_t), 1, &ddobj); 6121d452cf5Sahrens if (err != ENOENT) 6131d452cf5Sahrens return (err ? err : EEXIST); 6141d452cf5Sahrens 615ae46e4c7SMatthew Ahrens if (oa->clone_origin != NULL) { 616ae46e4c7SMatthew Ahrens /* You can't clone across pools. */ 617ae46e4c7SMatthew Ahrens if (oa->clone_origin->ds_dir->dd_pool != dd->dd_pool) 6181d452cf5Sahrens return (EXDEV); 6191d452cf5Sahrens 620ae46e4c7SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 621ae46e4c7SMatthew Ahrens if (!dsl_dataset_is_snapshot(oa->clone_origin)) 6221d452cf5Sahrens return (EINVAL); 6231d452cf5Sahrens } 624ecd6cf80Smarks 6251d452cf5Sahrens return (0); 6261d452cf5Sahrens } 6271d452cf5Sahrens 6281d452cf5Sahrens static void 629ecd6cf80Smarks dmu_objset_create_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 6301d452cf5Sahrens { 6311d452cf5Sahrens dsl_dir_t *dd = arg1; 6321d452cf5Sahrens struct oscarg *oa = arg2; 6331d452cf5Sahrens uint64_t dsobj; 634fa9e4066Sahrens 635fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 636fa9e4066Sahrens 6371d452cf5Sahrens dsobj = dsl_dataset_create_sync(dd, oa->lastname, 638ae46e4c7SMatthew Ahrens oa->clone_origin, oa->flags, cr, tx); 639fa9e4066Sahrens 640ae46e4c7SMatthew Ahrens if (oa->clone_origin == NULL) { 641ae46e4c7SMatthew Ahrens dsl_dataset_t *ds; 642ae46e4c7SMatthew Ahrens blkptr_t *bp; 643503ad85cSMatthew Ahrens objset_t *os; 644fa9e4066Sahrens 645ae46e4c7SMatthew Ahrens VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, dsobj, 646ae46e4c7SMatthew Ahrens FTAG, &ds)); 647ae46e4c7SMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 648ae46e4c7SMatthew Ahrens ASSERT(BP_IS_HOLE(bp)); 649ae46e4c7SMatthew Ahrens 650503ad85cSMatthew Ahrens os = dmu_objset_create_impl(dsl_dataset_get_spa(ds), 651c717a561Smaybee ds, bp, oa->type, tx); 652fa9e4066Sahrens 653fa9e4066Sahrens if (oa->userfunc) 654503ad85cSMatthew Ahrens oa->userfunc(os, oa->userarg, cr, tx); 655ae46e4c7SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 656fa9e4066Sahrens } 657ecd6cf80Smarks 658ecd6cf80Smarks spa_history_internal_log(LOG_DS_CREATE, dd->dd_pool->dp_spa, 659ecd6cf80Smarks tx, cr, "dataset = %llu", dsobj); 660fa9e4066Sahrens } 661fa9e4066Sahrens 662fa9e4066Sahrens int 663ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 664ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 665fa9e4066Sahrens { 6661d452cf5Sahrens dsl_dir_t *pdd; 667fa9e4066Sahrens const char *tail; 668fa9e4066Sahrens int err = 0; 6691d452cf5Sahrens struct oscarg oa = { 0 }; 670fa9e4066Sahrens 6711d452cf5Sahrens ASSERT(strchr(name, '@') == NULL); 6721d452cf5Sahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 673ea8dc4b6Seschrock if (err) 674ea8dc4b6Seschrock return (err); 675fa9e4066Sahrens if (tail == NULL) { 6761d452cf5Sahrens dsl_dir_close(pdd, FTAG); 677fa9e4066Sahrens return (EEXIST); 678fa9e4066Sahrens } 679fa9e4066Sahrens 6801d452cf5Sahrens oa.userfunc = func; 6811d452cf5Sahrens oa.userarg = arg; 6821d452cf5Sahrens oa.lastname = tail; 6831d452cf5Sahrens oa.type = type; 684ab04eb8eStimh oa.flags = flags; 685ecd6cf80Smarks 686ae46e4c7SMatthew Ahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 687ae46e4c7SMatthew Ahrens dmu_objset_create_sync, pdd, &oa, 5); 688ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 689ae46e4c7SMatthew Ahrens return (err); 690ae46e4c7SMatthew Ahrens } 691ae46e4c7SMatthew Ahrens 692ae46e4c7SMatthew Ahrens int 693ae46e4c7SMatthew Ahrens dmu_objset_clone(const char *name, dsl_dataset_t *clone_origin, uint64_t flags) 694ae46e4c7SMatthew Ahrens { 695ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 696ae46e4c7SMatthew Ahrens const char *tail; 697ae46e4c7SMatthew Ahrens int err = 0; 698ae46e4c7SMatthew Ahrens struct oscarg oa = { 0 }; 699ae46e4c7SMatthew Ahrens 700ae46e4c7SMatthew Ahrens ASSERT(strchr(name, '@') == NULL); 701ae46e4c7SMatthew Ahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 702ae46e4c7SMatthew Ahrens if (err) 703ae46e4c7SMatthew Ahrens return (err); 704ae46e4c7SMatthew Ahrens if (tail == NULL) { 705ae46e4c7SMatthew Ahrens dsl_dir_close(pdd, FTAG); 706ae46e4c7SMatthew Ahrens return (EEXIST); 707fa9e4066Sahrens } 708ae46e4c7SMatthew Ahrens 709ae46e4c7SMatthew Ahrens oa.lastname = tail; 710ae46e4c7SMatthew Ahrens oa.clone_origin = clone_origin; 711ae46e4c7SMatthew Ahrens oa.flags = flags; 712ae46e4c7SMatthew Ahrens 7131d452cf5Sahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 7141d452cf5Sahrens dmu_objset_create_sync, pdd, &oa, 5); 7151d452cf5Sahrens dsl_dir_close(pdd, FTAG); 716fa9e4066Sahrens return (err); 717fa9e4066Sahrens } 718fa9e4066Sahrens 719fa9e4066Sahrens int 720842727c2SChris Kirby dmu_objset_destroy(const char *name, boolean_t defer) 721fa9e4066Sahrens { 722503ad85cSMatthew Ahrens dsl_dataset_t *ds; 723fa9e4066Sahrens int error; 724fa9e4066Sahrens 725fa9e4066Sahrens /* 726ae46e4c7SMatthew Ahrens * dsl_dataset_destroy() can free any claimed-but-unplayed 727ae46e4c7SMatthew Ahrens * intent log, but if there is an active log, it has blocks that 728ae46e4c7SMatthew Ahrens * are allocated, but may not yet be reflected in the on-disk 729ae46e4c7SMatthew Ahrens * structure. Only the ZIL knows how to free them, so we have 730ae46e4c7SMatthew Ahrens * to call into it here. 731fa9e4066Sahrens */ 732503ad85cSMatthew Ahrens error = dsl_dataset_own(name, B_TRUE, FTAG, &ds); 733fa9e4066Sahrens if (error == 0) { 734503ad85cSMatthew Ahrens objset_t *os; 735503ad85cSMatthew Ahrens if (dmu_objset_from_ds(ds, &os) == 0) 736503ad85cSMatthew Ahrens zil_destroy(dmu_objset_zil(os), B_FALSE); 737503ad85cSMatthew Ahrens error = dsl_dataset_destroy(ds, FTAG, defer); 738ae46e4c7SMatthew Ahrens /* dsl_dataset_destroy() closes the ds. */ 739fa9e4066Sahrens } 740fa9e4066Sahrens 7413cb34c60Sahrens return (error); 742fa9e4066Sahrens } 743fa9e4066Sahrens 7441d452cf5Sahrens struct snaparg { 7451d452cf5Sahrens dsl_sync_task_group_t *dstg; 7461d452cf5Sahrens char *snapname; 7471d452cf5Sahrens char failed[MAXPATHLEN]; 748ecd6cf80Smarks boolean_t checkperms; 749ea2f5b9eSMatthew Ahrens nvlist_t *props; 7503cb34c60Sahrens }; 7513cb34c60Sahrens 752ea2f5b9eSMatthew Ahrens static int 753ea2f5b9eSMatthew Ahrens snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) 754ea2f5b9eSMatthew Ahrens { 755ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 756ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 757ea2f5b9eSMatthew Ahrens 758ea2f5b9eSMatthew Ahrens /* The props have already been checked by zfs_check_userprops(). */ 759ea2f5b9eSMatthew Ahrens 760503ad85cSMatthew Ahrens return (dsl_dataset_snapshot_check(os->os_dsl_dataset, 761ea2f5b9eSMatthew Ahrens sn->snapname, tx)); 762ea2f5b9eSMatthew Ahrens } 763ea2f5b9eSMatthew Ahrens 764ea2f5b9eSMatthew Ahrens static void 765ea2f5b9eSMatthew Ahrens snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 766ea2f5b9eSMatthew Ahrens { 767ea2f5b9eSMatthew Ahrens objset_t *os = arg1; 768503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 769ea2f5b9eSMatthew Ahrens struct snaparg *sn = arg2; 770ea2f5b9eSMatthew Ahrens 771ea2f5b9eSMatthew Ahrens dsl_dataset_snapshot_sync(ds, sn->snapname, cr, tx); 772ea2f5b9eSMatthew Ahrens 77392241e0bSTom Erickson if (sn->props) { 77492241e0bSTom Erickson dsl_props_arg_t pa; 77592241e0bSTom Erickson pa.pa_props = sn->props; 77692241e0bSTom Erickson pa.pa_source = ZPROP_SRC_LOCAL; 77792241e0bSTom Erickson dsl_props_set_sync(ds->ds_prev, &pa, cr, tx); 77892241e0bSTom Erickson } 779ea2f5b9eSMatthew Ahrens } 7801d452cf5Sahrens 7811d452cf5Sahrens static int 7821d452cf5Sahrens dmu_objset_snapshot_one(char *name, void *arg) 7831d452cf5Sahrens { 7841d452cf5Sahrens struct snaparg *sn = arg; 7851d452cf5Sahrens objset_t *os; 7861d452cf5Sahrens int err; 7871d452cf5Sahrens 7881d452cf5Sahrens (void) strcpy(sn->failed, name); 7891d452cf5Sahrens 790ecd6cf80Smarks /* 791ecd6cf80Smarks * Check permissions only when requested. This only applies when 792ecd6cf80Smarks * doing a recursive snapshot. The permission checks for the starting 793ecd6cf80Smarks * dataset have already been performed in zfs_secpolicy_snapshot() 794ecd6cf80Smarks */ 795ecd6cf80Smarks if (sn->checkperms == B_TRUE && 796ecd6cf80Smarks (err = zfs_secpolicy_snapshot_perms(name, CRED()))) 797ecd6cf80Smarks return (err); 798ecd6cf80Smarks 799503ad85cSMatthew Ahrens err = dmu_objset_hold(name, sn, &os); 8001d452cf5Sahrens if (err != 0) 8011d452cf5Sahrens return (err); 8021d452cf5Sahrens 803745cd3c5Smaybee /* If the objset is in an inconsistent state, return busy */ 804503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) { 805503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 806f2e10be3Srm return (EBUSY); 807f2e10be3Srm } 808f2e10be3Srm 8091d452cf5Sahrens /* 8101d452cf5Sahrens * NB: we need to wait for all in-flight changes to get to disk, 8111d452cf5Sahrens * so that we snapshot those changes. zil_suspend does this as 8121d452cf5Sahrens * a side effect. 8131d452cf5Sahrens */ 8141d452cf5Sahrens err = zil_suspend(dmu_objset_zil(os)); 8151d452cf5Sahrens if (err == 0) { 816ea2f5b9eSMatthew Ahrens dsl_sync_task_create(sn->dstg, snapshot_check, 817ea2f5b9eSMatthew Ahrens snapshot_sync, os, sn, 3); 818f2e10be3Srm } else { 819503ad85cSMatthew Ahrens dmu_objset_rele(os, sn); 8201d452cf5Sahrens } 821f2e10be3Srm 8221d452cf5Sahrens return (err); 8231d452cf5Sahrens } 8241d452cf5Sahrens 8251d452cf5Sahrens int 826ea2f5b9eSMatthew Ahrens dmu_objset_snapshot(char *fsname, char *snapname, 827ea2f5b9eSMatthew Ahrens nvlist_t *props, boolean_t recursive) 8281d452cf5Sahrens { 8291d452cf5Sahrens dsl_sync_task_t *dst; 830ea2f5b9eSMatthew Ahrens struct snaparg sn; 8311d452cf5Sahrens spa_t *spa; 8321d452cf5Sahrens int err; 8331d452cf5Sahrens 8341d452cf5Sahrens (void) strcpy(sn.failed, fsname); 8351d452cf5Sahrens 83640feaa91Sahrens err = spa_open(fsname, &spa, FTAG); 8371d452cf5Sahrens if (err) 8381d452cf5Sahrens return (err); 8391d452cf5Sahrens 8401d452cf5Sahrens sn.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); 8411d452cf5Sahrens sn.snapname = snapname; 842ea2f5b9eSMatthew Ahrens sn.props = props; 8431d452cf5Sahrens 8440b69c2f0Sahrens if (recursive) { 845ecd6cf80Smarks sn.checkperms = B_TRUE; 8460b69c2f0Sahrens err = dmu_objset_find(fsname, 8470b69c2f0Sahrens dmu_objset_snapshot_one, &sn, DS_FIND_CHILDREN); 8480b69c2f0Sahrens } else { 849ecd6cf80Smarks sn.checkperms = B_FALSE; 8501d452cf5Sahrens err = dmu_objset_snapshot_one(fsname, &sn); 8510b69c2f0Sahrens } 8521d452cf5Sahrens 853ea2f5b9eSMatthew Ahrens if (err == 0) 854ea2f5b9eSMatthew Ahrens err = dsl_sync_task_group_wait(sn.dstg); 8551d452cf5Sahrens 8561d452cf5Sahrens for (dst = list_head(&sn.dstg->dstg_tasks); dst; 8571d452cf5Sahrens dst = list_next(&sn.dstg->dstg_tasks, dst)) { 858ea2f5b9eSMatthew Ahrens objset_t *os = dst->dst_arg1; 859503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 8601d452cf5Sahrens if (dst->dst_err) 8613cb34c60Sahrens dsl_dataset_name(ds, sn.failed); 862ea2f5b9eSMatthew Ahrens zil_resume(dmu_objset_zil(os)); 863503ad85cSMatthew Ahrens dmu_objset_rele(os, &sn); 8643cb34c60Sahrens } 8653cb34c60Sahrens 8661d452cf5Sahrens if (err) 8671d452cf5Sahrens (void) strcpy(fsname, sn.failed); 8681d452cf5Sahrens dsl_sync_task_group_destroy(sn.dstg); 8691d452cf5Sahrens spa_close(spa, FTAG); 8701d452cf5Sahrens return (err); 8711d452cf5Sahrens } 8721d452cf5Sahrens 873fa9e4066Sahrens static void 87414843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 875fa9e4066Sahrens { 876c717a561Smaybee dnode_t *dn; 877faafa6e3Sahrens 878c717a561Smaybee while (dn = list_head(list)) { 879c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 880c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 881c717a561Smaybee /* 88214843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 88314843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 884c717a561Smaybee */ 885c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 886c717a561Smaybee ASSERT(dn->dn_zio); 887faafa6e3Sahrens 888c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 889c717a561Smaybee list_remove(list, dn); 89014843421SMatthew Ahrens 89114843421SMatthew Ahrens if (newlist) { 89214843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 89314843421SMatthew Ahrens list_insert_tail(newlist, dn); 89414843421SMatthew Ahrens } 89514843421SMatthew Ahrens 896c717a561Smaybee dnode_sync(dn, tx); 897fa9e4066Sahrens } 898fa9e4066Sahrens } 899fa9e4066Sahrens 900fa9e4066Sahrens /* ARGSUSED */ 901fa9e4066Sahrens static void 902b24ab676SJeff Bonwick dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 903fa9e4066Sahrens { 904e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 905503ad85cSMatthew Ahrens objset_t *os = arg; 906c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 907fa9e4066Sahrens 908e14bb325SJeff Bonwick ASSERT(bp == os->os_rootbp); 909e14bb325SJeff Bonwick ASSERT(BP_GET_TYPE(bp) == DMU_OT_OBJSET); 910e14bb325SJeff Bonwick ASSERT(BP_GET_LEVEL(bp) == 0); 9110a4e9518Sgw 912fa9e4066Sahrens /* 91314843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 91414843421SMatthew Ahrens * allocated in the object set (not counting the "special" 91514843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 91614843421SMatthew Ahrens * dnode and user/group accounting objects). 917fa9e4066Sahrens */ 91814843421SMatthew Ahrens bp->blk_fill = 0; 919e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 920c717a561Smaybee bp->blk_fill += dnp->dn_blkptr[i].blk_fill; 921b24ab676SJeff Bonwick } 922b24ab676SJeff Bonwick 923b24ab676SJeff Bonwick /* ARGSUSED */ 924b24ab676SJeff Bonwick static void 925b24ab676SJeff Bonwick dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 926b24ab676SJeff Bonwick { 927b24ab676SJeff Bonwick blkptr_t *bp = zio->io_bp; 928b24ab676SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 929b24ab676SJeff Bonwick objset_t *os = arg; 9300a4e9518Sgw 931e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 932b24ab676SJeff Bonwick ASSERT(BP_EQUAL(bp, bp_orig)); 933e14bb325SJeff Bonwick } else { 934b24ab676SJeff Bonwick dsl_dataset_t *ds = os->os_dsl_dataset; 935b24ab676SJeff Bonwick dmu_tx_t *tx = os->os_synctx; 936b24ab676SJeff Bonwick 937b24ab676SJeff Bonwick (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 938b24ab676SJeff Bonwick dsl_dataset_block_born(ds, bp, tx); 9390a4e9518Sgw } 940c717a561Smaybee } 941c717a561Smaybee 942fa9e4066Sahrens /* called from dsl */ 943fa9e4066Sahrens void 944503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 945fa9e4066Sahrens { 946fa9e4066Sahrens int txgoff; 947ea8dc4b6Seschrock zbookmark_t zb; 948b24ab676SJeff Bonwick zio_prop_t zp; 949c717a561Smaybee zio_t *zio; 950c717a561Smaybee list_t *list; 95114843421SMatthew Ahrens list_t *newlist = NULL; 952c717a561Smaybee dbuf_dirty_record_t *dr; 953c717a561Smaybee 954c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 955fa9e4066Sahrens 956fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 957fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 958fa9e4066Sahrens os->os_synctx = tx; 959fa9e4066Sahrens 96087bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 96187bd5c1eSahrens /* 96287bd5c1eSahrens * This is the MOS. If we have upgraded, 96387bd5c1eSahrens * spa_max_replication() could change, so reset 96487bd5c1eSahrens * os_copies here. 96587bd5c1eSahrens */ 96687bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 96787bd5c1eSahrens } 96887bd5c1eSahrens 969fa9e4066Sahrens /* 970c717a561Smaybee * Create the root block IO 971fa9e4066Sahrens */ 972088f3894Sahrens arc_release(os->os_phys_buf, &os->os_phys_buf); 97314843421SMatthew Ahrens 974b24ab676SJeff Bonwick SET_BOOKMARK(&zb, os->os_dsl_dataset ? 975b24ab676SJeff Bonwick os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 976b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 977b24ab676SJeff Bonwick 978b24ab676SJeff Bonwick dmu_write_policy(os, NULL, 0, 0, &zp); 979b24ab676SJeff Bonwick 980b24ab676SJeff Bonwick zio = arc_write(pio, os->os_spa, tx->tx_txg, 981b24ab676SJeff Bonwick os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), &zp, 982b24ab676SJeff Bonwick dmu_objset_write_ready, dmu_objset_write_done, os, 983e14bb325SJeff Bonwick ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); 984c717a561Smaybee 985c717a561Smaybee /* 98614843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 987c717a561Smaybee */ 988c717a561Smaybee os->os_meta_dnode->dn_zio = zio; 989c717a561Smaybee dnode_sync(os->os_meta_dnode, tx); 990c717a561Smaybee 99114843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 99214843421SMatthew Ahrens 99314843421SMatthew Ahrens if (os->os_userused_dnode && 99414843421SMatthew Ahrens os->os_userused_dnode->dn_type != DMU_OT_NONE) { 99514843421SMatthew Ahrens os->os_userused_dnode->dn_zio = zio; 99614843421SMatthew Ahrens dnode_sync(os->os_userused_dnode, tx); 99714843421SMatthew Ahrens os->os_groupused_dnode->dn_zio = zio; 99814843421SMatthew Ahrens dnode_sync(os->os_groupused_dnode, tx); 99914843421SMatthew Ahrens } 100014843421SMatthew Ahrens 1001c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 1002fa9e4066Sahrens 100314843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 100414843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 100514843421SMatthew Ahrens /* 100614843421SMatthew Ahrens * We must create the list here because it uses the 100714843421SMatthew Ahrens * dn_dirty_link[] of this txg. 100814843421SMatthew Ahrens */ 100914843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 101014843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 101114843421SMatthew Ahrens } 101214843421SMatthew Ahrens 101314843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 101414843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1015fa9e4066Sahrens 1016c717a561Smaybee list = &os->os_meta_dnode->dn_dirty_records[txgoff]; 1017c717a561Smaybee while (dr = list_head(list)) { 1018c717a561Smaybee ASSERT(dr->dr_dbuf->db_level == 0); 1019c717a561Smaybee list_remove(list, dr); 1020c717a561Smaybee if (dr->dr_zio) 1021c717a561Smaybee zio_nowait(dr->dr_zio); 1022c717a561Smaybee } 1023c717a561Smaybee /* 1024c717a561Smaybee * Free intent log blocks up to this tx. 1025c717a561Smaybee */ 1026c717a561Smaybee zil_sync(os->os_zil, tx); 1027088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 1028c717a561Smaybee zio_nowait(zio); 1029fa9e4066Sahrens } 1030fa9e4066Sahrens 1031b24ab676SJeff Bonwick boolean_t 1032b24ab676SJeff Bonwick dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1033b24ab676SJeff Bonwick { 1034b24ab676SJeff Bonwick return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1035b24ab676SJeff Bonwick !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1036b24ab676SJeff Bonwick } 1037b24ab676SJeff Bonwick 103814843421SMatthew Ahrens static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 103914843421SMatthew Ahrens 104014843421SMatthew Ahrens void 104114843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 104214843421SMatthew Ahrens { 104314843421SMatthew Ahrens used_cbs[ost] = cb; 104414843421SMatthew Ahrens } 104514843421SMatthew Ahrens 104614843421SMatthew Ahrens boolean_t 1047503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 104814843421SMatthew Ahrens { 104914843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 105014843421SMatthew Ahrens used_cbs[os->os_phys->os_type] && 105114843421SMatthew Ahrens os->os_userused_dnode); 105214843421SMatthew Ahrens } 105314843421SMatthew Ahrens 10549966ca11SMatthew Ahrens static void 10559966ca11SMatthew Ahrens do_userquota_callback(objset_t *os, dnode_phys_t *dnp, 10569966ca11SMatthew Ahrens boolean_t subtract, dmu_tx_t *tx) 10579966ca11SMatthew Ahrens { 10589966ca11SMatthew Ahrens static const char zerobuf[DN_MAX_BONUSLEN] = {0}; 10599966ca11SMatthew Ahrens uint64_t user, group; 10609966ca11SMatthew Ahrens 10619966ca11SMatthew Ahrens ASSERT(dnp->dn_type != 0 || 10629966ca11SMatthew Ahrens (bcmp(DN_BONUS(dnp), zerobuf, DN_MAX_BONUSLEN) == 0 && 10639966ca11SMatthew Ahrens DN_USED_BYTES(dnp) == 0)); 10649966ca11SMatthew Ahrens 10659966ca11SMatthew Ahrens if ((dnp->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) && 10669966ca11SMatthew Ahrens 0 == used_cbs[os->os_phys->os_type](dnp->dn_bonustype, 10679966ca11SMatthew Ahrens DN_BONUS(dnp), &user, &group)) { 10689966ca11SMatthew Ahrens int64_t delta = DNODE_SIZE + DN_USED_BYTES(dnp); 10699966ca11SMatthew Ahrens if (subtract) 10709966ca11SMatthew Ahrens delta = -delta; 1071c33e334fSMatthew Ahrens VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 10729966ca11SMatthew Ahrens user, delta, tx)); 1073c33e334fSMatthew Ahrens VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 10749966ca11SMatthew Ahrens group, delta, tx)); 10759966ca11SMatthew Ahrens } 10769966ca11SMatthew Ahrens } 10779966ca11SMatthew Ahrens 107814843421SMatthew Ahrens void 1079503ad85cSMatthew Ahrens dmu_objset_do_userquota_callbacks(objset_t *os, dmu_tx_t *tx) 108014843421SMatthew Ahrens { 108114843421SMatthew Ahrens dnode_t *dn; 108214843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 108314843421SMatthew Ahrens 108414843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 108514843421SMatthew Ahrens 108614843421SMatthew Ahrens while (dn = list_head(list)) { 108714843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 108814843421SMatthew Ahrens ASSERT(dn->dn_oldphys); 108914843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 109014843421SMatthew Ahrens dn->dn_phys->dn_flags & 109114843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 109214843421SMatthew Ahrens 109314843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 109414843421SMatthew Ahrens if (os->os_userused_dnode->dn_type == DMU_OT_NONE) { 1095503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 109614843421SMatthew Ahrens DMU_USERUSED_OBJECT, 109714843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1098503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 109914843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 110014843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 110114843421SMatthew Ahrens } 110214843421SMatthew Ahrens 110314843421SMatthew Ahrens /* 11049966ca11SMatthew Ahrens * We intentionally modify the zap object even if the 11059966ca11SMatthew Ahrens * net delta (due to phys-oldphys) is zero. Otherwise 11069966ca11SMatthew Ahrens * the block of the zap obj could be shared between 11079966ca11SMatthew Ahrens * datasets but need to be different between them after 11089966ca11SMatthew Ahrens * a bprewrite. 110914843421SMatthew Ahrens */ 11109966ca11SMatthew Ahrens do_userquota_callback(os, dn->dn_oldphys, B_TRUE, tx); 11119966ca11SMatthew Ahrens do_userquota_callback(os, dn->dn_phys, B_FALSE, tx); 111214843421SMatthew Ahrens 111314843421SMatthew Ahrens /* 111414843421SMatthew Ahrens * The mutex is needed here for interlock with dnode_allocate. 111514843421SMatthew Ahrens */ 111614843421SMatthew Ahrens mutex_enter(&dn->dn_mtx); 111714843421SMatthew Ahrens zio_buf_free(dn->dn_oldphys, sizeof (dnode_phys_t)); 111814843421SMatthew Ahrens dn->dn_oldphys = NULL; 111914843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 112014843421SMatthew Ahrens 112114843421SMatthew Ahrens list_remove(list, dn); 112214843421SMatthew Ahrens dnode_rele(dn, list); 112314843421SMatthew Ahrens } 112414843421SMatthew Ahrens } 112514843421SMatthew Ahrens 112614843421SMatthew Ahrens boolean_t 112714843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 112814843421SMatthew Ahrens { 1129503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 113014843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 113114843421SMatthew Ahrens } 113214843421SMatthew Ahrens 113314843421SMatthew Ahrens int 113414843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 113514843421SMatthew Ahrens { 113614843421SMatthew Ahrens uint64_t obj; 113714843421SMatthew Ahrens int err = 0; 113814843421SMatthew Ahrens 113914843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 114014843421SMatthew Ahrens return (0); 1141503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 114214843421SMatthew Ahrens return (ENOTSUP); 114314843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 114414843421SMatthew Ahrens return (EINVAL); 114514843421SMatthew Ahrens 114614843421SMatthew Ahrens /* 114714843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 114814843421SMatthew Ahrens * synced out and now accounted. If this is called 114914843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 115014843421SMatthew Ahrens * that's fine, since we track each object's accounted state 115114843421SMatthew Ahrens * independently. 115214843421SMatthew Ahrens */ 115314843421SMatthew Ahrens 115414843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 115568857716SLin Ling dmu_tx_t *tx; 115614843421SMatthew Ahrens dmu_buf_t *db; 115714843421SMatthew Ahrens int objerr; 115814843421SMatthew Ahrens 115914843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 116014843421SMatthew Ahrens return (EINTR); 116114843421SMatthew Ahrens 116214843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 116314843421SMatthew Ahrens if (objerr) 116414843421SMatthew Ahrens continue; 116568857716SLin Ling tx = dmu_tx_create(os); 116614843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 116714843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 116814843421SMatthew Ahrens if (objerr) { 116914843421SMatthew Ahrens dmu_tx_abort(tx); 117014843421SMatthew Ahrens continue; 117114843421SMatthew Ahrens } 117214843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 117314843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 117414843421SMatthew Ahrens dmu_tx_commit(tx); 117514843421SMatthew Ahrens } 117614843421SMatthew Ahrens 1177503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 117814843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 117914843421SMatthew Ahrens return (0); 118014843421SMatthew Ahrens } 118114843421SMatthew Ahrens 1182fa9e4066Sahrens void 1183a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1184a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1185fa9e4066Sahrens { 1186503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1187a2eea2e1Sahrens usedobjsp, availobjsp); 1188a2eea2e1Sahrens } 1189a2eea2e1Sahrens 1190a2eea2e1Sahrens uint64_t 1191a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1192a2eea2e1Sahrens { 1193503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1194a2eea2e1Sahrens } 1195a2eea2e1Sahrens 1196a2eea2e1Sahrens void 1197a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1198a2eea2e1Sahrens { 1199503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1200503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1201503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1202a2eea2e1Sahrens } 1203a2eea2e1Sahrens 1204a2eea2e1Sahrens void 1205a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1206a2eea2e1Sahrens { 1207503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1208503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1209a2eea2e1Sahrens 1210503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1211503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1212a2eea2e1Sahrens 1213a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1214503ad85cSMatthew Ahrens os->os_phys->os_type); 121514843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 121614843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1217fa9e4066Sahrens } 1218fa9e4066Sahrens 1219fa9e4066Sahrens int 1220fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1221fa9e4066Sahrens { 1222503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1223503ad85cSMatthew Ahrens return (dsl_dataset_is_snapshot(os->os_dsl_dataset)); 1224fa9e4066Sahrens else 1225fa9e4066Sahrens return (B_FALSE); 1226fa9e4066Sahrens } 1227fa9e4066Sahrens 1228ab04eb8eStimh int 1229ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1230ab04eb8eStimh boolean_t *conflict) 1231ab04eb8eStimh { 1232503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1233ab04eb8eStimh uint64_t ignored; 1234ab04eb8eStimh 1235ab04eb8eStimh if (ds->ds_phys->ds_snapnames_zapobj == 0) 1236ab04eb8eStimh return (ENOENT); 1237ab04eb8eStimh 1238ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1239ab04eb8eStimh ds->ds_phys->ds_snapnames_zapobj, name, 8, 1, &ignored, MT_FIRST, 1240ab04eb8eStimh real, maxlen, conflict)); 1241ab04eb8eStimh } 1242ab04eb8eStimh 1243fa9e4066Sahrens int 1244fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1245b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1246fa9e4066Sahrens { 1247503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1248fa9e4066Sahrens zap_cursor_t cursor; 1249fa9e4066Sahrens zap_attribute_t attr; 1250fa9e4066Sahrens 1251fa9e4066Sahrens if (ds->ds_phys->ds_snapnames_zapobj == 0) 1252fa9e4066Sahrens return (ENOENT); 1253fa9e4066Sahrens 1254fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1255fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1256fa9e4066Sahrens ds->ds_phys->ds_snapnames_zapobj, *offp); 1257fa9e4066Sahrens 125887e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 125987e5029aSahrens zap_cursor_fini(&cursor); 126087e5029aSahrens return (ENOENT); 126187e5029aSahrens } 126287e5029aSahrens 126387e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 126487e5029aSahrens zap_cursor_fini(&cursor); 126587e5029aSahrens return (ENAMETOOLONG); 126687e5029aSahrens } 126787e5029aSahrens 126887e5029aSahrens (void) strcpy(name, attr.za_name); 126987e5029aSahrens if (idp) 127087e5029aSahrens *idp = attr.za_first_integer; 1271b38f0970Sck if (case_conflict) 1272b38f0970Sck *case_conflict = attr.za_normalization_conflict; 127387e5029aSahrens zap_cursor_advance(&cursor); 127487e5029aSahrens *offp = zap_cursor_serialize(&cursor); 127587e5029aSahrens zap_cursor_fini(&cursor); 127687e5029aSahrens 127787e5029aSahrens return (0); 127887e5029aSahrens } 127987e5029aSahrens 128087e5029aSahrens int 128187e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 128287e5029aSahrens uint64_t *idp, uint64_t *offp) 128387e5029aSahrens { 1284503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 128587e5029aSahrens zap_cursor_t cursor; 128687e5029aSahrens zap_attribute_t attr; 128787e5029aSahrens 128887e5029aSahrens /* there is no next dir on a snapshot! */ 1289503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 129087e5029aSahrens dd->dd_phys->dd_head_dataset_obj) 1291fa9e4066Sahrens return (ENOENT); 1292fa9e4066Sahrens 129387e5029aSahrens zap_cursor_init_serialized(&cursor, 129487e5029aSahrens dd->dd_pool->dp_meta_objset, 129587e5029aSahrens dd->dd_phys->dd_child_dir_zapobj, *offp); 129687e5029aSahrens 129787e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 129887e5029aSahrens zap_cursor_fini(&cursor); 129987e5029aSahrens return (ENOENT); 130087e5029aSahrens } 130187e5029aSahrens 130287e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 130387e5029aSahrens zap_cursor_fini(&cursor); 1304fa9e4066Sahrens return (ENAMETOOLONG); 130587e5029aSahrens } 1306fa9e4066Sahrens 1307fa9e4066Sahrens (void) strcpy(name, attr.za_name); 130887e5029aSahrens if (idp) 130987e5029aSahrens *idp = attr.za_first_integer; 1310fa9e4066Sahrens zap_cursor_advance(&cursor); 1311fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 131287e5029aSahrens zap_cursor_fini(&cursor); 1313fa9e4066Sahrens 1314fa9e4066Sahrens return (0); 1315fa9e4066Sahrens } 1316fa9e4066Sahrens 1317088f3894Sahrens struct findarg { 1318088f3894Sahrens int (*func)(char *, void *); 1319088f3894Sahrens void *arg; 1320088f3894Sahrens }; 1321088f3894Sahrens 1322088f3894Sahrens /* ARGSUSED */ 1323088f3894Sahrens static int 1324088f3894Sahrens findfunc(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg) 1325088f3894Sahrens { 1326088f3894Sahrens struct findarg *fa = arg; 1327088f3894Sahrens return (fa->func((char *)dsname, fa->arg)); 1328088f3894Sahrens } 1329088f3894Sahrens 1330fa9e4066Sahrens /* 1331fa9e4066Sahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 1332088f3894Sahrens * Perhaps change all callers to use dmu_objset_find_spa()? 1333fa9e4066Sahrens */ 13341d452cf5Sahrens int 13351d452cf5Sahrens dmu_objset_find(char *name, int func(char *, void *), void *arg, int flags) 1336088f3894Sahrens { 1337088f3894Sahrens struct findarg fa; 1338088f3894Sahrens fa.func = func; 1339088f3894Sahrens fa.arg = arg; 1340088f3894Sahrens return (dmu_objset_find_spa(NULL, name, findfunc, &fa, flags)); 1341088f3894Sahrens } 1342088f3894Sahrens 1343088f3894Sahrens /* 1344088f3894Sahrens * Find all objsets under name, call func on each 1345088f3894Sahrens */ 1346088f3894Sahrens int 1347088f3894Sahrens dmu_objset_find_spa(spa_t *spa, const char *name, 1348088f3894Sahrens int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags) 1349fa9e4066Sahrens { 1350fa9e4066Sahrens dsl_dir_t *dd; 1351088f3894Sahrens dsl_pool_t *dp; 1352088f3894Sahrens dsl_dataset_t *ds; 1353fa9e4066Sahrens zap_cursor_t zc; 1354b7661cccSmmusante zap_attribute_t *attr; 1355fa9e4066Sahrens char *child; 1356088f3894Sahrens uint64_t thisobj; 1357088f3894Sahrens int err; 1358fa9e4066Sahrens 1359088f3894Sahrens if (name == NULL) 1360088f3894Sahrens name = spa_name(spa); 1361088f3894Sahrens err = dsl_dir_open_spa(spa, name, FTAG, &dd, NULL); 1362ea8dc4b6Seschrock if (err) 13631d452cf5Sahrens return (err); 1364fa9e4066Sahrens 1365088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1366088f3894Sahrens if (dd->dd_myname[0] == '$') { 1367088f3894Sahrens dsl_dir_close(dd, FTAG); 1368088f3894Sahrens return (0); 1369088f3894Sahrens } 1370088f3894Sahrens 1371088f3894Sahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 1372b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1373088f3894Sahrens dp = dd->dd_pool; 1374fa9e4066Sahrens 1375fa9e4066Sahrens /* 1376fa9e4066Sahrens * Iterate over all children. 1377fa9e4066Sahrens */ 13780b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1379088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 13800b69c2f0Sahrens dd->dd_phys->dd_child_dir_zapobj); 1381b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 13820b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 1383b7661cccSmmusante ASSERT(attr->za_integer_length == sizeof (uint64_t)); 1384b7661cccSmmusante ASSERT(attr->za_num_integers == 1); 1385fa9e4066Sahrens 1386*486ae710SMatthew Ahrens child = kmem_asprintf("%s/%s", name, attr->za_name); 1387088f3894Sahrens err = dmu_objset_find_spa(spa, child, func, arg, flags); 1388*486ae710SMatthew Ahrens strfree(child); 13890b69c2f0Sahrens if (err) 13900b69c2f0Sahrens break; 13910b69c2f0Sahrens } 13920b69c2f0Sahrens zap_cursor_fini(&zc); 13931d452cf5Sahrens 13940b69c2f0Sahrens if (err) { 13950b69c2f0Sahrens dsl_dir_close(dd, FTAG); 1396b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 13970b69c2f0Sahrens return (err); 13980b69c2f0Sahrens } 1399fa9e4066Sahrens } 1400fa9e4066Sahrens 1401fa9e4066Sahrens /* 1402fa9e4066Sahrens * Iterate over all snapshots. 1403fa9e4066Sahrens */ 1404088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1405088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1406088f3894Sahrens rw_enter(&dp->dp_config_rwlock, RW_READER); 1407088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1408088f3894Sahrens if (!dsl_pool_sync_context(dp)) 1409088f3894Sahrens rw_exit(&dp->dp_config_rwlock); 1410088f3894Sahrens 1411088f3894Sahrens if (err == 0) { 1412088f3894Sahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 1413088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1414088f3894Sahrens 1415088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1416088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1417088f3894Sahrens (void) zap_cursor_advance(&zc)) { 1418088f3894Sahrens ASSERT(attr->za_integer_length == 1419088f3894Sahrens sizeof (uint64_t)); 1420088f3894Sahrens ASSERT(attr->za_num_integers == 1); 1421088f3894Sahrens 1422*486ae710SMatthew Ahrens child = kmem_asprintf("%s@%s", 1423*486ae710SMatthew Ahrens name, attr->za_name); 1424088f3894Sahrens err = func(spa, attr->za_first_integer, 1425088f3894Sahrens child, arg); 1426*486ae710SMatthew Ahrens strfree(child); 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 1462b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, 1463b24ab676SJeff 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