1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 2206e0070dSMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23edf345e6SMatthew Ahrens * Copyright (c) 2012, 2014 by Delphix. All rights reserved. 24aad02571SSaso Kiselkov * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25a2afb611SJerry Jelinek * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26bc9014e6SJustin Gibbs * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 2703b1c297SAlexander Eremin * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 2812380e1eSArne Jansen * Copyright (c) 2015, STRATO AG, Inc. All rights reserved. 29fa9e4066Sahrens */ 30fa9e4066Sahrens 3155da60b9SMark J Musante /* Portions Copyright 2010 Robert Milkowski */ 3255da60b9SMark J Musante 33ecd6cf80Smarks #include <sys/cred.h> 34fa9e4066Sahrens #include <sys/zfs_context.h> 35fa9e4066Sahrens #include <sys/dmu_objset.h> 36fa9e4066Sahrens #include <sys/dsl_dir.h> 37fa9e4066Sahrens #include <sys/dsl_dataset.h> 38fa9e4066Sahrens #include <sys/dsl_prop.h> 39fa9e4066Sahrens #include <sys/dsl_pool.h> 401d452cf5Sahrens #include <sys/dsl_synctask.h> 41ecd6cf80Smarks #include <sys/dsl_deleg.h> 42fa9e4066Sahrens #include <sys/dnode.h> 43fa9e4066Sahrens #include <sys/dbuf.h> 44a2eea2e1Sahrens #include <sys/zvol.h> 45fa9e4066Sahrens #include <sys/dmu_tx.h> 46fa9e4066Sahrens #include <sys/zap.h> 47fa9e4066Sahrens #include <sys/zil.h> 48fa9e4066Sahrens #include <sys/dmu_impl.h> 49ecd6cf80Smarks #include <sys/zfs_ioctl.h> 500a586ceaSMark Shellenbaum #include <sys/sa.h> 5199d5e173STim Haley #include <sys/zfs_onexit.h> 523b2aab18SMatthew Ahrens #include <sys/dsl_destroy.h> 5312380e1eSArne Jansen #include <sys/vdev.h> 54fa9e4066Sahrens 55744947dcSTom Erickson /* 56744947dcSTom Erickson * Needed to close a window in dnode_move() that allows the objset to be freed 57744947dcSTom Erickson * before it can be safely accessed. 58744947dcSTom Erickson */ 59744947dcSTom Erickson krwlock_t os_lock; 60744947dcSTom Erickson 6112380e1eSArne Jansen /* 6212380e1eSArne Jansen * Tunable to overwrite the maximum number of threads for the parallization 6312380e1eSArne Jansen * of dmu_objset_find_dp, needed to speed up the import of pools with many 6412380e1eSArne Jansen * datasets. 6512380e1eSArne Jansen * Default is 4 times the number of leaf vdevs. 6612380e1eSArne Jansen */ 6712380e1eSArne Jansen int dmu_find_threads = 0; 6812380e1eSArne Jansen 6912380e1eSArne Jansen static void dmu_objset_find_dp_cb(void *arg); 7012380e1eSArne Jansen 71744947dcSTom Erickson void 72744947dcSTom Erickson dmu_objset_init(void) 73744947dcSTom Erickson { 74744947dcSTom Erickson rw_init(&os_lock, NULL, RW_DEFAULT, NULL); 75744947dcSTom Erickson } 76744947dcSTom Erickson 77744947dcSTom Erickson void 78744947dcSTom Erickson dmu_objset_fini(void) 79744947dcSTom Erickson { 80744947dcSTom Erickson rw_destroy(&os_lock); 81744947dcSTom Erickson } 82744947dcSTom Erickson 83fa9e4066Sahrens spa_t * 84fa9e4066Sahrens dmu_objset_spa(objset_t *os) 85fa9e4066Sahrens { 86503ad85cSMatthew Ahrens return (os->os_spa); 87fa9e4066Sahrens } 88fa9e4066Sahrens 89fa9e4066Sahrens zilog_t * 90fa9e4066Sahrens dmu_objset_zil(objset_t *os) 91fa9e4066Sahrens { 92503ad85cSMatthew Ahrens return (os->os_zil); 93fa9e4066Sahrens } 94fa9e4066Sahrens 95fa9e4066Sahrens dsl_pool_t * 96fa9e4066Sahrens dmu_objset_pool(objset_t *os) 97fa9e4066Sahrens { 98fa9e4066Sahrens dsl_dataset_t *ds; 99fa9e4066Sahrens 100503ad85cSMatthew Ahrens if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 101fa9e4066Sahrens return (ds->ds_dir->dd_pool); 102fa9e4066Sahrens else 103503ad85cSMatthew Ahrens return (spa_get_dsl(os->os_spa)); 104fa9e4066Sahrens } 105fa9e4066Sahrens 106fa9e4066Sahrens dsl_dataset_t * 107fa9e4066Sahrens dmu_objset_ds(objset_t *os) 108fa9e4066Sahrens { 109503ad85cSMatthew Ahrens return (os->os_dsl_dataset); 110fa9e4066Sahrens } 111fa9e4066Sahrens 112fa9e4066Sahrens dmu_objset_type_t 113fa9e4066Sahrens dmu_objset_type(objset_t *os) 114fa9e4066Sahrens { 115503ad85cSMatthew Ahrens return (os->os_phys->os_type); 116fa9e4066Sahrens } 117fa9e4066Sahrens 118fa9e4066Sahrens void 119fa9e4066Sahrens dmu_objset_name(objset_t *os, char *buf) 120fa9e4066Sahrens { 121503ad85cSMatthew Ahrens dsl_dataset_name(os->os_dsl_dataset, buf); 122fa9e4066Sahrens } 123fa9e4066Sahrens 124fa9e4066Sahrens uint64_t 125fa9e4066Sahrens dmu_objset_id(objset_t *os) 126fa9e4066Sahrens { 127503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 128fa9e4066Sahrens 129fa9e4066Sahrens return (ds ? ds->ds_object : 0); 130fa9e4066Sahrens } 131fa9e4066Sahrens 132edf345e6SMatthew Ahrens zfs_sync_type_t 13355da60b9SMark J Musante dmu_objset_syncprop(objset_t *os) 13455da60b9SMark J Musante { 13555da60b9SMark J Musante return (os->os_sync); 13655da60b9SMark J Musante } 13755da60b9SMark J Musante 138edf345e6SMatthew Ahrens zfs_logbias_op_t 139e09fa4daSNeil Perrin dmu_objset_logbias(objset_t *os) 140e09fa4daSNeil Perrin { 141e09fa4daSNeil Perrin return (os->os_logbias); 142e09fa4daSNeil Perrin } 143e09fa4daSNeil Perrin 144fa9e4066Sahrens static void 145fa9e4066Sahrens checksum_changed_cb(void *arg, uint64_t newval) 146fa9e4066Sahrens { 147503ad85cSMatthew Ahrens objset_t *os = arg; 148fa9e4066Sahrens 149fa9e4066Sahrens /* 150fa9e4066Sahrens * Inheritance should have been done by now. 151fa9e4066Sahrens */ 152fa9e4066Sahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 153fa9e4066Sahrens 154503ad85cSMatthew Ahrens os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 155fa9e4066Sahrens } 156fa9e4066Sahrens 157fa9e4066Sahrens static void 158fa9e4066Sahrens compression_changed_cb(void *arg, uint64_t newval) 159fa9e4066Sahrens { 160503ad85cSMatthew Ahrens objset_t *os = arg; 161fa9e4066Sahrens 162fa9e4066Sahrens /* 163fa9e4066Sahrens * Inheritance and range checking should have been done by now. 164fa9e4066Sahrens */ 165fa9e4066Sahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 166fa9e4066Sahrens 167db1741f5SJustin T. Gibbs os->os_compress = zio_compress_select(os->os_spa, newval, 168db1741f5SJustin T. Gibbs ZIO_COMPRESS_ON); 169fa9e4066Sahrens } 170fa9e4066Sahrens 171d0ad202dSahrens static void 172d0ad202dSahrens copies_changed_cb(void *arg, uint64_t newval) 173d0ad202dSahrens { 174503ad85cSMatthew Ahrens objset_t *os = arg; 175d0ad202dSahrens 176d0ad202dSahrens /* 177d0ad202dSahrens * Inheritance and range checking should have been done by now. 178d0ad202dSahrens */ 179d0ad202dSahrens ASSERT(newval > 0); 180503ad85cSMatthew Ahrens ASSERT(newval <= spa_max_replication(os->os_spa)); 181d0ad202dSahrens 182503ad85cSMatthew Ahrens os->os_copies = newval; 183d0ad202dSahrens } 184d0ad202dSahrens 185b24ab676SJeff Bonwick static void 186b24ab676SJeff Bonwick dedup_changed_cb(void *arg, uint64_t newval) 187b24ab676SJeff Bonwick { 188b24ab676SJeff Bonwick objset_t *os = arg; 189b24ab676SJeff Bonwick spa_t *spa = os->os_spa; 190b24ab676SJeff Bonwick enum zio_checksum checksum; 191b24ab676SJeff Bonwick 192b24ab676SJeff Bonwick /* 193b24ab676SJeff Bonwick * Inheritance should have been done by now. 194b24ab676SJeff Bonwick */ 195b24ab676SJeff Bonwick ASSERT(newval != ZIO_CHECKSUM_INHERIT); 196b24ab676SJeff Bonwick 197b24ab676SJeff Bonwick checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 198b24ab676SJeff Bonwick 199b24ab676SJeff Bonwick os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 200b24ab676SJeff Bonwick os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 201b24ab676SJeff Bonwick } 202b24ab676SJeff Bonwick 2033baa08fcSek static void 2043baa08fcSek primary_cache_changed_cb(void *arg, uint64_t newval) 2053baa08fcSek { 206503ad85cSMatthew Ahrens objset_t *os = arg; 2073baa08fcSek 2083baa08fcSek /* 2093baa08fcSek * Inheritance and range checking should have been done by now. 2103baa08fcSek */ 2113baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 2123baa08fcSek newval == ZFS_CACHE_METADATA); 2133baa08fcSek 214503ad85cSMatthew Ahrens os->os_primary_cache = newval; 2153baa08fcSek } 2163baa08fcSek 2173baa08fcSek static void 2183baa08fcSek secondary_cache_changed_cb(void *arg, uint64_t newval) 2193baa08fcSek { 220503ad85cSMatthew Ahrens objset_t *os = arg; 2213baa08fcSek 2223baa08fcSek /* 2233baa08fcSek * Inheritance and range checking should have been done by now. 2243baa08fcSek */ 2253baa08fcSek ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 2263baa08fcSek newval == ZFS_CACHE_METADATA); 2273baa08fcSek 228503ad85cSMatthew Ahrens os->os_secondary_cache = newval; 2293baa08fcSek } 2303baa08fcSek 23155da60b9SMark J Musante static void 23255da60b9SMark J Musante sync_changed_cb(void *arg, uint64_t newval) 23355da60b9SMark J Musante { 23455da60b9SMark J Musante objset_t *os = arg; 23555da60b9SMark J Musante 23655da60b9SMark J Musante /* 23755da60b9SMark J Musante * Inheritance and range checking should have been done by now. 23855da60b9SMark J Musante */ 23955da60b9SMark J Musante ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS || 24055da60b9SMark J Musante newval == ZFS_SYNC_DISABLED); 24155da60b9SMark J Musante 24255da60b9SMark J Musante os->os_sync = newval; 24355da60b9SMark J Musante if (os->os_zil) 24455da60b9SMark J Musante zil_set_sync(os->os_zil, newval); 24555da60b9SMark J Musante } 24655da60b9SMark J Musante 247edf345e6SMatthew Ahrens static void 248edf345e6SMatthew Ahrens redundant_metadata_changed_cb(void *arg, uint64_t newval) 249edf345e6SMatthew Ahrens { 250edf345e6SMatthew Ahrens objset_t *os = arg; 251edf345e6SMatthew Ahrens 252edf345e6SMatthew Ahrens /* 253edf345e6SMatthew Ahrens * Inheritance and range checking should have been done by now. 254edf345e6SMatthew Ahrens */ 255edf345e6SMatthew Ahrens ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL || 256edf345e6SMatthew Ahrens newval == ZFS_REDUNDANT_METADATA_MOST); 257edf345e6SMatthew Ahrens 258edf345e6SMatthew Ahrens os->os_redundant_metadata = newval; 259edf345e6SMatthew Ahrens } 260edf345e6SMatthew Ahrens 261e09fa4daSNeil Perrin static void 262e09fa4daSNeil Perrin logbias_changed_cb(void *arg, uint64_t newval) 263e09fa4daSNeil Perrin { 264e09fa4daSNeil Perrin objset_t *os = arg; 265e09fa4daSNeil Perrin 266e09fa4daSNeil Perrin ASSERT(newval == ZFS_LOGBIAS_LATENCY || 267e09fa4daSNeil Perrin newval == ZFS_LOGBIAS_THROUGHPUT); 268e09fa4daSNeil Perrin os->os_logbias = newval; 269e09fa4daSNeil Perrin if (os->os_zil) 270e09fa4daSNeil Perrin zil_set_logbias(os->os_zil, newval); 271e09fa4daSNeil Perrin } 272e09fa4daSNeil Perrin 273b5152584SMatthew Ahrens static void 274b5152584SMatthew Ahrens recordsize_changed_cb(void *arg, uint64_t newval) 275b5152584SMatthew Ahrens { 276b5152584SMatthew Ahrens objset_t *os = arg; 277b5152584SMatthew Ahrens 278b5152584SMatthew Ahrens os->os_recordsize = newval; 279b5152584SMatthew Ahrens } 280b5152584SMatthew Ahrens 281fa9e4066Sahrens void 282fa9e4066Sahrens dmu_objset_byteswap(void *buf, size_t size) 283fa9e4066Sahrens { 284fa9e4066Sahrens objset_phys_t *osp = buf; 285fa9e4066Sahrens 28614843421SMatthew Ahrens ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 287fa9e4066Sahrens dnode_byteswap(&osp->os_meta_dnode); 288fa9e4066Sahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 289fa9e4066Sahrens osp->os_type = BSWAP_64(osp->os_type); 29014843421SMatthew Ahrens osp->os_flags = BSWAP_64(osp->os_flags); 29114843421SMatthew Ahrens if (size == sizeof (objset_phys_t)) { 29214843421SMatthew Ahrens dnode_byteswap(&osp->os_userused_dnode); 29314843421SMatthew Ahrens dnode_byteswap(&osp->os_groupused_dnode); 29414843421SMatthew Ahrens } 295fa9e4066Sahrens } 296fa9e4066Sahrens 297ea8dc4b6Seschrock int 298ea8dc4b6Seschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 299503ad85cSMatthew Ahrens objset_t **osp) 300fa9e4066Sahrens { 301503ad85cSMatthew Ahrens objset_t *os; 302088f3894Sahrens int i, err; 303fa9e4066Sahrens 30491ebeef5Sahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 30591ebeef5Sahrens 306503ad85cSMatthew Ahrens os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 307503ad85cSMatthew Ahrens os->os_dsl_dataset = ds; 308503ad85cSMatthew Ahrens os->os_spa = spa; 309503ad85cSMatthew Ahrens os->os_rootbp = bp; 310503ad85cSMatthew Ahrens if (!BP_IS_HOLE(os->os_rootbp)) { 3117adb730bSGeorge Wilson arc_flags_t aflags = ARC_FLAG_WAIT; 3127802d7bfSMatthew Ahrens zbookmark_phys_t zb; 313b24ab676SJeff Bonwick SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 314b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 315b24ab676SJeff Bonwick 316503ad85cSMatthew Ahrens if (DMU_OS_IS_L2CACHEABLE(os)) 3177adb730bSGeorge Wilson aflags |= ARC_FLAG_L2CACHE; 318aad02571SSaso Kiselkov if (DMU_OS_IS_L2COMPRESSIBLE(os)) 3197adb730bSGeorge Wilson aflags |= ARC_FLAG_L2COMPRESS; 320ea8dc4b6Seschrock 321503ad85cSMatthew Ahrens dprintf_bp(os->os_rootbp, "reading %s", ""); 3221b912ec7SGeorge Wilson err = arc_read(NULL, spa, os->os_rootbp, 323503ad85cSMatthew Ahrens arc_getbuf_func, &os->os_phys_buf, 32413506d1eSmaybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 3253b2aab18SMatthew Ahrens if (err != 0) { 326503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 327b87f3af3Sperrin /* convert checksum errors into IO errors */ 328b87f3af3Sperrin if (err == ECKSUM) 329be6fd75aSMatthew Ahrens err = SET_ERROR(EIO); 330ea8dc4b6Seschrock return (err); 331ea8dc4b6Seschrock } 33214843421SMatthew Ahrens 33314843421SMatthew Ahrens /* Increase the blocksize if we are permitted. */ 33414843421SMatthew Ahrens if (spa_version(spa) >= SPA_VERSION_USERSPACE && 335503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 33614843421SMatthew Ahrens arc_buf_t *buf = arc_buf_alloc(spa, 337503ad85cSMatthew Ahrens sizeof (objset_phys_t), &os->os_phys_buf, 33814843421SMatthew Ahrens ARC_BUFC_METADATA); 33914843421SMatthew Ahrens bzero(buf->b_data, sizeof (objset_phys_t)); 340503ad85cSMatthew Ahrens bcopy(os->os_phys_buf->b_data, buf->b_data, 341503ad85cSMatthew Ahrens arc_buf_size(os->os_phys_buf)); 342503ad85cSMatthew Ahrens (void) arc_buf_remove_ref(os->os_phys_buf, 343503ad85cSMatthew Ahrens &os->os_phys_buf); 344503ad85cSMatthew Ahrens os->os_phys_buf = buf; 34514843421SMatthew Ahrens } 34614843421SMatthew Ahrens 347503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 348503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 349fa9e4066Sahrens } else { 35014843421SMatthew Ahrens int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 35114843421SMatthew Ahrens sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 352503ad85cSMatthew Ahrens os->os_phys_buf = arc_buf_alloc(spa, size, 353503ad85cSMatthew Ahrens &os->os_phys_buf, ARC_BUFC_METADATA); 354503ad85cSMatthew Ahrens os->os_phys = os->os_phys_buf->b_data; 355503ad85cSMatthew Ahrens bzero(os->os_phys, size); 356fa9e4066Sahrens } 357fa9e4066Sahrens 358fa9e4066Sahrens /* 359fa9e4066Sahrens * Note: the changed_cb will be called once before the register 360fa9e4066Sahrens * func returns, thus changing the checksum/compression from the 3613baa08fcSek * default (fletcher2/off). Snapshots don't need to know about 3623baa08fcSek * checksum/compression/copies. 363fa9e4066Sahrens */ 3645d7b4d43SMatthew Ahrens if (ds != NULL) { 365*9c3fd121SMatthew Ahrens boolean_t needlock = B_FALSE; 366*9c3fd121SMatthew Ahrens 367*9c3fd121SMatthew Ahrens /* 368*9c3fd121SMatthew Ahrens * Note: it's valid to open the objset if the dataset is 369*9c3fd121SMatthew Ahrens * long-held, in which case the pool_config lock will not 370*9c3fd121SMatthew Ahrens * be held. 371*9c3fd121SMatthew Ahrens */ 372*9c3fd121SMatthew Ahrens if (!dsl_pool_config_held(dmu_objset_pool(os))) { 373*9c3fd121SMatthew Ahrens needlock = B_TRUE; 374*9c3fd121SMatthew Ahrens dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 375*9c3fd121SMatthew Ahrens } 3763b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3773b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), 378503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 3793b2aab18SMatthew Ahrens if (err == 0) { 3803b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3813b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), 382503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 3833b2aab18SMatthew Ahrens } 384bc9014e6SJustin Gibbs if (!ds->ds_is_snapshot) { 3853b2aab18SMatthew Ahrens if (err == 0) { 3863b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3873b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_CHECKSUM), 388503ad85cSMatthew Ahrens checksum_changed_cb, os); 3893b2aab18SMatthew Ahrens } 3903b2aab18SMatthew Ahrens if (err == 0) { 3913b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3923b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COMPRESSION), 393503ad85cSMatthew Ahrens compression_changed_cb, os); 3943b2aab18SMatthew Ahrens } 3953b2aab18SMatthew Ahrens if (err == 0) { 3963b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3973b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COPIES), 398503ad85cSMatthew Ahrens copies_changed_cb, os); 3993b2aab18SMatthew Ahrens } 4003b2aab18SMatthew Ahrens if (err == 0) { 4013b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 4023b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_DEDUP), 403b24ab676SJeff Bonwick dedup_changed_cb, os); 4043b2aab18SMatthew Ahrens } 4053b2aab18SMatthew Ahrens if (err == 0) { 4063b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 4073b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_LOGBIAS), 408e09fa4daSNeil Perrin logbias_changed_cb, os); 4093b2aab18SMatthew Ahrens } 4103b2aab18SMatthew Ahrens if (err == 0) { 4113b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 4123b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SYNC), 41355da60b9SMark J Musante sync_changed_cb, os); 4143b2aab18SMatthew Ahrens } 415edf345e6SMatthew Ahrens if (err == 0) { 416edf345e6SMatthew Ahrens err = dsl_prop_register(ds, 417edf345e6SMatthew Ahrens zfs_prop_to_name( 418edf345e6SMatthew Ahrens ZFS_PROP_REDUNDANT_METADATA), 419edf345e6SMatthew Ahrens redundant_metadata_changed_cb, os); 420edf345e6SMatthew Ahrens } 421b5152584SMatthew Ahrens if (err == 0) { 422b5152584SMatthew Ahrens err = dsl_prop_register(ds, 423b5152584SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_RECORDSIZE), 424b5152584SMatthew Ahrens recordsize_changed_cb, os); 425b5152584SMatthew Ahrens } 4263baa08fcSek } 427*9c3fd121SMatthew Ahrens if (needlock) 428*9c3fd121SMatthew Ahrens dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 4293b2aab18SMatthew Ahrens if (err != 0) { 430503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 4313b2aab18SMatthew Ahrens &os->os_phys_buf)); 432503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 433ea8dc4b6Seschrock return (err); 434ea8dc4b6Seschrock } 4355d7b4d43SMatthew Ahrens } else { 436fa9e4066Sahrens /* It's the meta-objset. */ 437503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 438db1741f5SJustin T. Gibbs os->os_compress = ZIO_COMPRESS_ON; 439503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 440b24ab676SJeff Bonwick os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 441edf345e6SMatthew Ahrens os->os_dedup_verify = B_FALSE; 442edf345e6SMatthew Ahrens os->os_logbias = ZFS_LOGBIAS_LATENCY; 443edf345e6SMatthew Ahrens os->os_sync = ZFS_SYNC_STANDARD; 444503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 445503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 446fa9e4066Sahrens } 447fa9e4066Sahrens 448bc9014e6SJustin Gibbs if (ds == NULL || !ds->ds_is_snapshot) 4496e0cbcaaSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 450503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 451fa9e4066Sahrens 452fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 453503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 454fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 455503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 456fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 457fa9e4066Sahrens } 458503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 459fa9e4066Sahrens offsetof(dnode_t, dn_link)); 460503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 461fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 462fa9e4066Sahrens 463503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 464503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 465503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 466503ad85cSMatthew Ahrens 467bc9014e6SJustin Gibbs dnode_special_open(os, &os->os_phys->os_meta_dnode, 468bc9014e6SJustin Gibbs DMU_META_DNODE_OBJECT, &os->os_meta_dnode); 469503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 470bc9014e6SJustin Gibbs dnode_special_open(os, &os->os_phys->os_userused_dnode, 471bc9014e6SJustin Gibbs DMU_USERUSED_OBJECT, &os->os_userused_dnode); 472bc9014e6SJustin Gibbs dnode_special_open(os, &os->os_phys->os_groupused_dnode, 473bc9014e6SJustin Gibbs DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode); 47414843421SMatthew Ahrens } 475fa9e4066Sahrens 476503ad85cSMatthew Ahrens *osp = os; 477ea8dc4b6Seschrock return (0); 478fa9e4066Sahrens } 479fa9e4066Sahrens 480503ad85cSMatthew Ahrens int 481503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 4823cb34c60Sahrens { 483503ad85cSMatthew Ahrens int err = 0; 4843cb34c60Sahrens 485*9c3fd121SMatthew Ahrens /* 486*9c3fd121SMatthew Ahrens * We shouldn't be doing anything with dsl_dataset_t's unless the 487*9c3fd121SMatthew Ahrens * pool_config lock is held, or the dataset is long-held. 488*9c3fd121SMatthew Ahrens */ 489*9c3fd121SMatthew Ahrens ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool) || 490*9c3fd121SMatthew Ahrens dsl_dataset_long_held(ds)); 491*9c3fd121SMatthew Ahrens 4923cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 4935d7b4d43SMatthew Ahrens if (ds->ds_objset == NULL) { 4945d7b4d43SMatthew Ahrens objset_t *os; 4953cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 4965d7b4d43SMatthew Ahrens ds, dsl_dataset_get_blkptr(ds), &os); 4975d7b4d43SMatthew Ahrens 4985d7b4d43SMatthew Ahrens if (err == 0) { 4995d7b4d43SMatthew Ahrens mutex_enter(&ds->ds_lock); 5005d7b4d43SMatthew Ahrens ASSERT(ds->ds_objset == NULL); 5015d7b4d43SMatthew Ahrens ds->ds_objset = os; 5025d7b4d43SMatthew Ahrens mutex_exit(&ds->ds_lock); 5035d7b4d43SMatthew Ahrens } 5043cb34c60Sahrens } 5055d7b4d43SMatthew Ahrens *osp = ds->ds_objset; 5063cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 507503ad85cSMatthew Ahrens return (err); 5083cb34c60Sahrens } 5093cb34c60Sahrens 5103b2aab18SMatthew Ahrens /* 5113b2aab18SMatthew Ahrens * Holds the pool while the objset is held. Therefore only one objset 5123b2aab18SMatthew Ahrens * can be held at a time. 5133b2aab18SMatthew Ahrens */ 5143cb34c60Sahrens int 515503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 5163cb34c60Sahrens { 5173b2aab18SMatthew Ahrens dsl_pool_t *dp; 518503ad85cSMatthew Ahrens dsl_dataset_t *ds; 5193cb34c60Sahrens int err; 5203cb34c60Sahrens 5213b2aab18SMatthew Ahrens err = dsl_pool_hold(name, tag, &dp); 5223b2aab18SMatthew Ahrens if (err != 0) 5233b2aab18SMatthew Ahrens return (err); 5243b2aab18SMatthew Ahrens err = dsl_dataset_hold(dp, name, tag, &ds); 5253b2aab18SMatthew Ahrens if (err != 0) { 5263b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 527503ad85cSMatthew Ahrens return (err); 5283b2aab18SMatthew Ahrens } 529503ad85cSMatthew Ahrens 530503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 5313b2aab18SMatthew Ahrens if (err != 0) { 532503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 5333b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 5343b2aab18SMatthew Ahrens } 535503ad85cSMatthew Ahrens 5363cb34c60Sahrens return (err); 5373cb34c60Sahrens } 5383cb34c60Sahrens 53912380e1eSArne Jansen static int 54012380e1eSArne Jansen dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type, 54112380e1eSArne Jansen boolean_t readonly, void *tag, objset_t **osp) 54212380e1eSArne Jansen { 54312380e1eSArne Jansen int err; 54412380e1eSArne Jansen 54512380e1eSArne Jansen err = dmu_objset_from_ds(ds, osp); 54612380e1eSArne Jansen if (err != 0) { 54712380e1eSArne Jansen dsl_dataset_disown(ds, tag); 54812380e1eSArne Jansen } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 54912380e1eSArne Jansen dsl_dataset_disown(ds, tag); 55012380e1eSArne Jansen return (SET_ERROR(EINVAL)); 55112380e1eSArne Jansen } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 55212380e1eSArne Jansen dsl_dataset_disown(ds, tag); 55312380e1eSArne Jansen return (SET_ERROR(EROFS)); 55412380e1eSArne Jansen } 55512380e1eSArne Jansen return (err); 55612380e1eSArne Jansen } 55712380e1eSArne Jansen 5583b2aab18SMatthew Ahrens /* 5593b2aab18SMatthew Ahrens * dsl_pool must not be held when this is called. 5603b2aab18SMatthew Ahrens * Upon successful return, there will be a longhold on the dataset, 5613b2aab18SMatthew Ahrens * and the dsl_pool will not be held. 5623b2aab18SMatthew Ahrens */ 563fa9e4066Sahrens int 564503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 565503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 566fa9e4066Sahrens { 5673b2aab18SMatthew Ahrens dsl_pool_t *dp; 568f18faf3fSek dsl_dataset_t *ds; 569f18faf3fSek int err; 570fa9e4066Sahrens 5713b2aab18SMatthew Ahrens err = dsl_pool_hold(name, FTAG, &dp); 5723b2aab18SMatthew Ahrens if (err != 0) 5733b2aab18SMatthew Ahrens return (err); 5743b2aab18SMatthew Ahrens err = dsl_dataset_own(dp, name, tag, &ds); 5753b2aab18SMatthew Ahrens if (err != 0) { 5763b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 577fa9e4066Sahrens return (err); 5783b2aab18SMatthew Ahrens } 57912380e1eSArne Jansen err = dmu_objset_own_impl(ds, type, readonly, tag, osp); 5803b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 58112380e1eSArne Jansen 5823cb34c60Sahrens return (err); 583fa9e4066Sahrens } 584fa9e4066Sahrens 58512380e1eSArne Jansen int 58612380e1eSArne Jansen dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type, 58712380e1eSArne Jansen boolean_t readonly, void *tag, objset_t **osp) 58812380e1eSArne Jansen { 58912380e1eSArne Jansen dsl_dataset_t *ds; 59012380e1eSArne Jansen int err; 59112380e1eSArne Jansen 59212380e1eSArne Jansen err = dsl_dataset_own_obj(dp, obj, tag, &ds); 59312380e1eSArne Jansen if (err != 0) 59412380e1eSArne Jansen return (err); 59512380e1eSArne Jansen 59612380e1eSArne Jansen return (dmu_objset_own_impl(ds, type, readonly, tag, osp)); 59712380e1eSArne Jansen } 59812380e1eSArne Jansen 599fa9e4066Sahrens void 600503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 601fa9e4066Sahrens { 6023b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_objset_pool(os); 603503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 6043b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 605503ad85cSMatthew Ahrens } 606503ad85cSMatthew Ahrens 60791948b51SKeith M Wesolowski /* 60891948b51SKeith M Wesolowski * When we are called, os MUST refer to an objset associated with a dataset 60991948b51SKeith M Wesolowski * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner 61091948b51SKeith M Wesolowski * == tag. We will then release and reacquire ownership of the dataset while 61191948b51SKeith M Wesolowski * holding the pool config_rwlock to avoid intervening namespace or ownership 61291948b51SKeith M Wesolowski * changes may occur. 61391948b51SKeith M Wesolowski * 61491948b51SKeith M Wesolowski * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to 61591948b51SKeith M Wesolowski * release the hold on its dataset and acquire a new one on the dataset of the 61691948b51SKeith M Wesolowski * same name so that it can be partially torn down and reconstructed. 61791948b51SKeith M Wesolowski */ 61891948b51SKeith M Wesolowski void 61991948b51SKeith M Wesolowski dmu_objset_refresh_ownership(objset_t *os, void *tag) 62091948b51SKeith M Wesolowski { 62191948b51SKeith M Wesolowski dsl_pool_t *dp; 62291948b51SKeith M Wesolowski dsl_dataset_t *ds, *newds; 62391948b51SKeith M Wesolowski char name[MAXNAMELEN]; 62491948b51SKeith M Wesolowski 62591948b51SKeith M Wesolowski ds = os->os_dsl_dataset; 62691948b51SKeith M Wesolowski VERIFY3P(ds, !=, NULL); 62791948b51SKeith M Wesolowski VERIFY3P(ds->ds_owner, ==, tag); 62891948b51SKeith M Wesolowski VERIFY(dsl_dataset_long_held(ds)); 62991948b51SKeith M Wesolowski 63091948b51SKeith M Wesolowski dsl_dataset_name(ds, name); 63191948b51SKeith M Wesolowski dp = dmu_objset_pool(os); 63291948b51SKeith M Wesolowski dsl_pool_config_enter(dp, FTAG); 63391948b51SKeith M Wesolowski dmu_objset_disown(os, tag); 63491948b51SKeith M Wesolowski VERIFY0(dsl_dataset_own(dp, name, tag, &newds)); 63591948b51SKeith M Wesolowski VERIFY3P(newds, ==, os->os_dsl_dataset); 63691948b51SKeith M Wesolowski dsl_pool_config_exit(dp, FTAG); 63791948b51SKeith M Wesolowski } 63891948b51SKeith M Wesolowski 639503ad85cSMatthew Ahrens void 640503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 641503ad85cSMatthew Ahrens { 642503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 643fa9e4066Sahrens } 644fa9e4066Sahrens 6453b2aab18SMatthew Ahrens void 6461934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 647ea8dc4b6Seschrock { 648bc9014e6SJustin Gibbs dnode_t dn_marker; 649ea8dc4b6Seschrock dnode_t *dn; 650c543ec06Sahrens 651503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 652bc9014e6SJustin Gibbs dn = list_head(&os->os_dnodes); 653bc9014e6SJustin Gibbs while (dn != NULL) { 654bc9014e6SJustin Gibbs /* 655bc9014e6SJustin Gibbs * Skip dnodes without holds. We have to do this dance 656bc9014e6SJustin Gibbs * because dnode_add_ref() only works if there is already a 657bc9014e6SJustin Gibbs * hold. If the dnode has no holds, then it has no dbufs. 658bc9014e6SJustin Gibbs */ 659bc9014e6SJustin Gibbs if (dnode_add_ref(dn, FTAG)) { 660bc9014e6SJustin Gibbs list_insert_after(&os->os_dnodes, dn, &dn_marker); 661bc9014e6SJustin Gibbs mutex_exit(&os->os_lock); 662c543ec06Sahrens 663bc9014e6SJustin Gibbs dnode_evict_dbufs(dn); 664bc9014e6SJustin Gibbs dnode_rele(dn, FTAG); 665c543ec06Sahrens 666bc9014e6SJustin Gibbs mutex_enter(&os->os_lock); 667bc9014e6SJustin Gibbs dn = list_next(&os->os_dnodes, &dn_marker); 668bc9014e6SJustin Gibbs list_remove(&os->os_dnodes, &dn_marker); 669bc9014e6SJustin Gibbs } else { 670bc9014e6SJustin Gibbs dn = list_next(&os->os_dnodes, dn); 671bc9014e6SJustin Gibbs } 672ea8dc4b6Seschrock } 673503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 674bc9014e6SJustin Gibbs 675bc9014e6SJustin Gibbs if (DMU_USERUSED_DNODE(os) != NULL) { 676bc9014e6SJustin Gibbs dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os)); 677bc9014e6SJustin Gibbs dnode_evict_dbufs(DMU_USERUSED_DNODE(os)); 678bc9014e6SJustin Gibbs } 679bc9014e6SJustin Gibbs dnode_evict_dbufs(DMU_META_DNODE(os)); 680ea8dc4b6Seschrock } 681ea8dc4b6Seschrock 682bc9014e6SJustin Gibbs /* 683bc9014e6SJustin Gibbs * Objset eviction processing is split into into two pieces. 684bc9014e6SJustin Gibbs * The first marks the objset as evicting, evicts any dbufs that 685bc9014e6SJustin Gibbs * have a refcount of zero, and then queues up the objset for the 686bc9014e6SJustin Gibbs * second phase of eviction. Once os->os_dnodes has been cleared by 687bc9014e6SJustin Gibbs * dnode_buf_pageout()->dnode_destroy(), the second phase is executed. 688bc9014e6SJustin Gibbs * The second phase closes the special dnodes, dequeues the objset from 689bc9014e6SJustin Gibbs * the list of those undergoing eviction, and finally frees the objset. 690bc9014e6SJustin Gibbs * 691bc9014e6SJustin Gibbs * NOTE: Due to asynchronous eviction processing (invocation of 692bc9014e6SJustin Gibbs * dnode_buf_pageout()), it is possible for the meta dnode for the 693bc9014e6SJustin Gibbs * objset to have no holds even though os->os_dnodes is not empty. 694bc9014e6SJustin Gibbs */ 695fa9e4066Sahrens void 696503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 697fa9e4066Sahrens { 698503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 699fa9e4066Sahrens 700b24ab676SJeff Bonwick for (int t = 0; t < TXG_SIZE; t++) 701b24ab676SJeff Bonwick ASSERT(!dmu_objset_is_dirty(os, t)); 702fa9e4066Sahrens 70303bad06fSJustin Gibbs if (ds) 70403bad06fSJustin Gibbs dsl_prop_unregister_all(ds, os); 705fa9e4066Sahrens 7060a586ceaSMark Shellenbaum if (os->os_sa) 7070a586ceaSMark Shellenbaum sa_tear_down(os); 7080a586ceaSMark Shellenbaum 709bc9014e6SJustin Gibbs os->os_evicting = B_TRUE; 7103b2aab18SMatthew Ahrens dmu_objset_evict_dbufs(os); 711ea8dc4b6Seschrock 712bc9014e6SJustin Gibbs mutex_enter(&os->os_lock); 713bc9014e6SJustin Gibbs spa_evicting_os_register(os->os_spa, os); 714bc9014e6SJustin Gibbs if (list_is_empty(&os->os_dnodes)) { 715bc9014e6SJustin Gibbs mutex_exit(&os->os_lock); 716bc9014e6SJustin Gibbs dmu_objset_evict_done(os); 717bc9014e6SJustin Gibbs } else { 718bc9014e6SJustin Gibbs mutex_exit(&os->os_lock); 719bc9014e6SJustin Gibbs } 720bc9014e6SJustin Gibbs } 721bc9014e6SJustin Gibbs 722bc9014e6SJustin Gibbs void 723bc9014e6SJustin Gibbs dmu_objset_evict_done(objset_t *os) 724bc9014e6SJustin Gibbs { 725bc9014e6SJustin Gibbs ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 726bc9014e6SJustin Gibbs 727744947dcSTom Erickson dnode_special_close(&os->os_meta_dnode); 728744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)) { 729744947dcSTom Erickson dnode_special_close(&os->os_userused_dnode); 730744947dcSTom Erickson dnode_special_close(&os->os_groupused_dnode); 73114843421SMatthew Ahrens } 732503ad85cSMatthew Ahrens zil_free(os->os_zil); 733fa9e4066Sahrens 7343b2aab18SMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf)); 735744947dcSTom Erickson 736744947dcSTom Erickson /* 737744947dcSTom Erickson * This is a barrier to prevent the objset from going away in 738744947dcSTom Erickson * dnode_move() until we can safely ensure that the objset is still in 739744947dcSTom Erickson * use. We consider the objset valid before the barrier and invalid 740744947dcSTom Erickson * after the barrier. 741744947dcSTom Erickson */ 742744947dcSTom Erickson rw_enter(&os_lock, RW_READER); 743744947dcSTom Erickson rw_exit(&os_lock); 744744947dcSTom Erickson 745503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 746503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 747503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 748bc9014e6SJustin Gibbs spa_evicting_os_deregister(os->os_spa, os); 749503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 750fa9e4066Sahrens } 751fa9e4066Sahrens 75271eb0538SChris Kirby timestruc_t 75371eb0538SChris Kirby dmu_objset_snap_cmtime(objset_t *os) 75471eb0538SChris Kirby { 75571eb0538SChris Kirby return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 75671eb0538SChris Kirby } 75771eb0538SChris Kirby 758fa9e4066Sahrens /* called from dsl for meta-objset */ 759503ad85cSMatthew Ahrens objset_t * 760c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 761c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 762fa9e4066Sahrens { 763503ad85cSMatthew Ahrens objset_t *os; 764fa9e4066Sahrens dnode_t *mdn; 765fa9e4066Sahrens 766fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 7673b2aab18SMatthew Ahrens 768feaa74e4SMark Maybee if (ds != NULL) 7693b2aab18SMatthew Ahrens VERIFY0(dmu_objset_from_ds(ds, &os)); 770feaa74e4SMark Maybee else 7713b2aab18SMatthew Ahrens VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os)); 772feaa74e4SMark Maybee 773744947dcSTom Erickson mdn = DMU_META_DNODE(os); 774fa9e4066Sahrens 775fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 776fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 777fa9e4066Sahrens 778fa9e4066Sahrens /* 779fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 780fa9e4066Sahrens * later, because then we could do it in quescing context while 781fa9e4066Sahrens * we are also accessing it in open context. 782fa9e4066Sahrens * 783fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 784fa9e4066Sahrens * because the MOS is only updated in syncing context. 785fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 786fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 787fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 788fa9e4066Sahrens */ 789ea8dc4b6Seschrock if (ds != NULL) { 790ea8dc4b6Seschrock int levels = 1; 791ea8dc4b6Seschrock 792ea8dc4b6Seschrock /* 793ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 794ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 795ea8dc4b6Seschrock */ 796ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 797ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 798ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 799ea8dc4b6Seschrock levels++; 800ea8dc4b6Seschrock 801fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 802ea8dc4b6Seschrock mdn->dn_nlevels = levels; 803ea8dc4b6Seschrock } 804fa9e4066Sahrens 805fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 806fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 807fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 808503ad85cSMatthew Ahrens os->os_phys->os_type = type; 809503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 810503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 811503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 81214843421SMatthew Ahrens } 813fa9e4066Sahrens 814fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 815fa9e4066Sahrens 816503ad85cSMatthew Ahrens return (os); 817fa9e4066Sahrens } 818fa9e4066Sahrens 8193b2aab18SMatthew Ahrens typedef struct dmu_objset_create_arg { 8203b2aab18SMatthew Ahrens const char *doca_name; 8213b2aab18SMatthew Ahrens cred_t *doca_cred; 8223b2aab18SMatthew Ahrens void (*doca_userfunc)(objset_t *os, void *arg, 8233b2aab18SMatthew Ahrens cred_t *cr, dmu_tx_t *tx); 8243b2aab18SMatthew Ahrens void *doca_userarg; 8253b2aab18SMatthew Ahrens dmu_objset_type_t doca_type; 8263b2aab18SMatthew Ahrens uint64_t doca_flags; 8273b2aab18SMatthew Ahrens } dmu_objset_create_arg_t; 828fa9e4066Sahrens 829ecd6cf80Smarks /*ARGSUSED*/ 830fa9e4066Sahrens static int 8313b2aab18SMatthew Ahrens dmu_objset_create_check(void *arg, dmu_tx_t *tx) 832fa9e4066Sahrens { 8333b2aab18SMatthew Ahrens dmu_objset_create_arg_t *doca = arg; 8343b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 8353b2aab18SMatthew Ahrens dsl_dir_t *pdd; 8363b2aab18SMatthew Ahrens const char *tail; 8373b2aab18SMatthew Ahrens int error; 8381d452cf5Sahrens 8393b2aab18SMatthew Ahrens if (strchr(doca->doca_name, '@') != NULL) 840be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 8411d452cf5Sahrens 8423b2aab18SMatthew Ahrens error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail); 8433b2aab18SMatthew Ahrens if (error != 0) 8443b2aab18SMatthew Ahrens return (error); 8453b2aab18SMatthew Ahrens if (tail == NULL) { 8463b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 847be6fd75aSMatthew Ahrens return (SET_ERROR(EEXIST)); 8481d452cf5Sahrens } 849a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 850a2afb611SJerry Jelinek doca->doca_cred); 8513b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 852ecd6cf80Smarks 853a2afb611SJerry Jelinek return (error); 8541d452cf5Sahrens } 8551d452cf5Sahrens 8561d452cf5Sahrens static void 8573b2aab18SMatthew Ahrens dmu_objset_create_sync(void *arg, dmu_tx_t *tx) 8581d452cf5Sahrens { 8593b2aab18SMatthew Ahrens dmu_objset_create_arg_t *doca = arg; 8603b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 8613b2aab18SMatthew Ahrens dsl_dir_t *pdd; 8623b2aab18SMatthew Ahrens const char *tail; 8634445fffbSMatthew Ahrens dsl_dataset_t *ds; 8643b2aab18SMatthew Ahrens uint64_t obj; 8654445fffbSMatthew Ahrens blkptr_t *bp; 8663b2aab18SMatthew Ahrens objset_t *os; 867fa9e4066Sahrens 8683b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail)); 869fa9e4066Sahrens 8703b2aab18SMatthew Ahrens obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags, 8713b2aab18SMatthew Ahrens doca->doca_cred, tx); 872fa9e4066Sahrens 8733b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 8744445fffbSMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 8753b2aab18SMatthew Ahrens os = dmu_objset_create_impl(pdd->dd_pool->dp_spa, 8763b2aab18SMatthew Ahrens ds, bp, doca->doca_type, tx); 877fa9e4066Sahrens 8783b2aab18SMatthew Ahrens if (doca->doca_userfunc != NULL) { 8793b2aab18SMatthew Ahrens doca->doca_userfunc(os, doca->doca_userarg, 8803b2aab18SMatthew Ahrens doca->doca_cred, tx); 881fa9e4066Sahrens } 882ecd6cf80Smarks 8833b2aab18SMatthew Ahrens spa_history_log_internal_ds(ds, "create", tx, ""); 8844445fffbSMatthew Ahrens dsl_dataset_rele(ds, FTAG); 8853b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 886fa9e4066Sahrens } 887fa9e4066Sahrens 888fa9e4066Sahrens int 889ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 890ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 891fa9e4066Sahrens { 8923b2aab18SMatthew Ahrens dmu_objset_create_arg_t doca; 893fa9e4066Sahrens 8943b2aab18SMatthew Ahrens doca.doca_name = name; 8953b2aab18SMatthew Ahrens doca.doca_cred = CRED(); 8963b2aab18SMatthew Ahrens doca.doca_flags = flags; 8973b2aab18SMatthew Ahrens doca.doca_userfunc = func; 8983b2aab18SMatthew Ahrens doca.doca_userarg = arg; 8993b2aab18SMatthew Ahrens doca.doca_type = type; 900ecd6cf80Smarks 9013b2aab18SMatthew Ahrens return (dsl_sync_task(name, 9027d46dc6cSMatthew Ahrens dmu_objset_create_check, dmu_objset_create_sync, &doca, 9037d46dc6cSMatthew Ahrens 5, ZFS_SPACE_CHECK_NORMAL)); 904ae46e4c7SMatthew Ahrens } 905ae46e4c7SMatthew Ahrens 9063b2aab18SMatthew Ahrens typedef struct dmu_objset_clone_arg { 9073b2aab18SMatthew Ahrens const char *doca_clone; 9083b2aab18SMatthew Ahrens const char *doca_origin; 9093b2aab18SMatthew Ahrens cred_t *doca_cred; 9103b2aab18SMatthew Ahrens } dmu_objset_clone_arg_t; 9113b2aab18SMatthew Ahrens 9123b2aab18SMatthew Ahrens /*ARGSUSED*/ 9133b2aab18SMatthew Ahrens static int 9143b2aab18SMatthew Ahrens dmu_objset_clone_check(void *arg, dmu_tx_t *tx) 915ae46e4c7SMatthew Ahrens { 9163b2aab18SMatthew Ahrens dmu_objset_clone_arg_t *doca = arg; 917ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 918ae46e4c7SMatthew Ahrens const char *tail; 9193b2aab18SMatthew Ahrens int error; 9203b2aab18SMatthew Ahrens dsl_dataset_t *origin; 9213b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 922ae46e4c7SMatthew Ahrens 9233b2aab18SMatthew Ahrens if (strchr(doca->doca_clone, '@') != NULL) 924be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 9253b2aab18SMatthew Ahrens 9263b2aab18SMatthew Ahrens error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail); 9273b2aab18SMatthew Ahrens if (error != 0) 9283b2aab18SMatthew Ahrens return (error); 929ae46e4c7SMatthew Ahrens if (tail == NULL) { 9303b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 931be6fd75aSMatthew Ahrens return (SET_ERROR(EEXIST)); 932fa9e4066Sahrens } 93303b1c297SAlexander Eremin 934a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 935a2afb611SJerry Jelinek doca->doca_cred); 936a2afb611SJerry Jelinek if (error != 0) { 937a2afb611SJerry Jelinek dsl_dir_rele(pdd, FTAG); 938a2afb611SJerry Jelinek return (SET_ERROR(EDQUOT)); 939a2afb611SJerry Jelinek } 9403b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 941fa9e4066Sahrens 9423b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin); 9433b2aab18SMatthew Ahrens if (error != 0) 94499d5e173STim Haley return (error); 94599d5e173STim Haley 9463b2aab18SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 947bc9014e6SJustin Gibbs if (!origin->ds_is_snapshot) { 9483b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 949be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 95092241e0bSTom Erickson } 9513b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 95299d5e173STim Haley 9533b2aab18SMatthew Ahrens return (0); 954ea2f5b9eSMatthew Ahrens } 9551d452cf5Sahrens 9563b2aab18SMatthew Ahrens static void 9573b2aab18SMatthew Ahrens dmu_objset_clone_sync(void *arg, dmu_tx_t *tx) 9581d452cf5Sahrens { 9593b2aab18SMatthew Ahrens dmu_objset_clone_arg_t *doca = arg; 9603b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 9613b2aab18SMatthew Ahrens dsl_dir_t *pdd; 9623b2aab18SMatthew Ahrens const char *tail; 9633b2aab18SMatthew Ahrens dsl_dataset_t *origin, *ds; 9643b2aab18SMatthew Ahrens uint64_t obj; 9653b2aab18SMatthew Ahrens char namebuf[MAXNAMELEN]; 9664445fffbSMatthew Ahrens 9673b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail)); 9683b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin)); 9694445fffbSMatthew Ahrens 9703b2aab18SMatthew Ahrens obj = dsl_dataset_create_sync(pdd, tail, origin, 0, 9713b2aab18SMatthew Ahrens doca->doca_cred, tx); 972f2e10be3Srm 9733b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 9743b2aab18SMatthew Ahrens dsl_dataset_name(origin, namebuf); 9753b2aab18SMatthew Ahrens spa_history_log_internal_ds(ds, "clone", tx, 9763b2aab18SMatthew Ahrens "origin=%s (%llu)", namebuf, origin->ds_object); 9773b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9783b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 9793b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 9801d452cf5Sahrens } 9811d452cf5Sahrens 9821d452cf5Sahrens int 9833b2aab18SMatthew Ahrens dmu_objset_clone(const char *clone, const char *origin) 9841d452cf5Sahrens { 9853b2aab18SMatthew Ahrens dmu_objset_clone_arg_t doca; 9864445fffbSMatthew Ahrens 9873b2aab18SMatthew Ahrens doca.doca_clone = clone; 9883b2aab18SMatthew Ahrens doca.doca_origin = origin; 9893b2aab18SMatthew Ahrens doca.doca_cred = CRED(); 99099d5e173STim Haley 9913b2aab18SMatthew Ahrens return (dsl_sync_task(clone, 9927d46dc6cSMatthew Ahrens dmu_objset_clone_check, dmu_objset_clone_sync, &doca, 9937d46dc6cSMatthew Ahrens 5, ZFS_SPACE_CHECK_NORMAL)); 9944445fffbSMatthew Ahrens } 9954445fffbSMatthew Ahrens 9964445fffbSMatthew Ahrens int 9974445fffbSMatthew Ahrens dmu_objset_snapshot_one(const char *fsname, const char *snapname) 9984445fffbSMatthew Ahrens { 9994445fffbSMatthew Ahrens int err; 10004445fffbSMatthew Ahrens char *longsnap = kmem_asprintf("%s@%s", fsname, snapname); 10014445fffbSMatthew Ahrens nvlist_t *snaps = fnvlist_alloc(); 10024445fffbSMatthew Ahrens 10034445fffbSMatthew Ahrens fnvlist_add_boolean(snaps, longsnap); 10044445fffbSMatthew Ahrens strfree(longsnap); 10053b2aab18SMatthew Ahrens err = dsl_dataset_snapshot(snaps, NULL, NULL); 10063b2aab18SMatthew Ahrens fnvlist_free(snaps); 10074445fffbSMatthew Ahrens return (err); 10084445fffbSMatthew Ahrens } 10094445fffbSMatthew Ahrens 1010fa9e4066Sahrens static void 101114843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 1012fa9e4066Sahrens { 1013c717a561Smaybee dnode_t *dn; 1014faafa6e3Sahrens 1015c717a561Smaybee while (dn = list_head(list)) { 1016c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 1017c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 1018c717a561Smaybee /* 101914843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 102014843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 1021c717a561Smaybee */ 1022c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 1023c717a561Smaybee ASSERT(dn->dn_zio); 1024faafa6e3Sahrens 1025c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 1026c717a561Smaybee list_remove(list, dn); 102714843421SMatthew Ahrens 102814843421SMatthew Ahrens if (newlist) { 102914843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 103014843421SMatthew Ahrens list_insert_tail(newlist, dn); 103114843421SMatthew Ahrens } 103214843421SMatthew Ahrens 1033c717a561Smaybee dnode_sync(dn, tx); 1034fa9e4066Sahrens } 1035fa9e4066Sahrens } 1036fa9e4066Sahrens 1037fa9e4066Sahrens /* ARGSUSED */ 1038fa9e4066Sahrens static void 1039b24ab676SJeff Bonwick dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 1040fa9e4066Sahrens { 1041e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 1042503ad85cSMatthew Ahrens objset_t *os = arg; 1043c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 1044fa9e4066Sahrens 10455d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); 10463b2aab18SMatthew Ahrens ASSERT3P(bp, ==, os->os_rootbp); 10473b2aab18SMatthew Ahrens ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 10483b2aab18SMatthew Ahrens ASSERT0(BP_GET_LEVEL(bp)); 10490a4e9518Sgw 1050fa9e4066Sahrens /* 105114843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 105214843421SMatthew Ahrens * allocated in the object set (not counting the "special" 105314843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 105414843421SMatthew Ahrens * dnode and user/group accounting objects). 1055fa9e4066Sahrens */ 105614843421SMatthew Ahrens bp->blk_fill = 0; 1057e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 10585d7b4d43SMatthew Ahrens bp->blk_fill += BP_GET_FILL(&dnp->dn_blkptr[i]); 1059b24ab676SJeff Bonwick } 1060b24ab676SJeff Bonwick 1061b24ab676SJeff Bonwick /* ARGSUSED */ 1062b24ab676SJeff Bonwick static void 1063b24ab676SJeff Bonwick dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 1064b24ab676SJeff Bonwick { 1065b24ab676SJeff Bonwick blkptr_t *bp = zio->io_bp; 1066b24ab676SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 1067b24ab676SJeff Bonwick objset_t *os = arg; 10680a4e9518Sgw 1069e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 1070b24ab676SJeff Bonwick ASSERT(BP_EQUAL(bp, bp_orig)); 1071e14bb325SJeff Bonwick } else { 1072b24ab676SJeff Bonwick dsl_dataset_t *ds = os->os_dsl_dataset; 1073b24ab676SJeff Bonwick dmu_tx_t *tx = os->os_synctx; 1074b24ab676SJeff Bonwick 1075b24ab676SJeff Bonwick (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 1076b24ab676SJeff Bonwick dsl_dataset_block_born(ds, bp, tx); 10770a4e9518Sgw } 1078c717a561Smaybee } 1079c717a561Smaybee 1080fa9e4066Sahrens /* called from dsl */ 1081fa9e4066Sahrens void 1082503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 1083fa9e4066Sahrens { 1084fa9e4066Sahrens int txgoff; 10857802d7bfSMatthew Ahrens zbookmark_phys_t zb; 1086b24ab676SJeff Bonwick zio_prop_t zp; 1087c717a561Smaybee zio_t *zio; 1088c717a561Smaybee list_t *list; 108914843421SMatthew Ahrens list_t *newlist = NULL; 1090c717a561Smaybee dbuf_dirty_record_t *dr; 1091c717a561Smaybee 1092c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 1093fa9e4066Sahrens 1094fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 1095fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 1096fa9e4066Sahrens os->os_synctx = tx; 1097fa9e4066Sahrens 109887bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 109987bd5c1eSahrens /* 110087bd5c1eSahrens * This is the MOS. If we have upgraded, 110187bd5c1eSahrens * spa_max_replication() could change, so reset 110287bd5c1eSahrens * os_copies here. 110387bd5c1eSahrens */ 110487bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 110587bd5c1eSahrens } 110687bd5c1eSahrens 1107fa9e4066Sahrens /* 1108c717a561Smaybee * Create the root block IO 1109fa9e4066Sahrens */ 1110b24ab676SJeff Bonwick SET_BOOKMARK(&zb, os->os_dsl_dataset ? 1111b24ab676SJeff Bonwick os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 1112b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 11131b912ec7SGeorge Wilson arc_release(os->os_phys_buf, &os->os_phys_buf); 1114b24ab676SJeff Bonwick 1115b24ab676SJeff Bonwick dmu_write_policy(os, NULL, 0, 0, &zp); 1116b24ab676SJeff Bonwick 1117b24ab676SJeff Bonwick zio = arc_write(pio, os->os_spa, tx->tx_txg, 1118aad02571SSaso Kiselkov os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), 1119aad02571SSaso Kiselkov DMU_OS_IS_L2COMPRESSIBLE(os), &zp, dmu_objset_write_ready, 112069962b56SMatthew Ahrens NULL, dmu_objset_write_done, os, ZIO_PRIORITY_ASYNC_WRITE, 1121aad02571SSaso Kiselkov ZIO_FLAG_MUSTSUCCEED, &zb); 1122c717a561Smaybee 1123c717a561Smaybee /* 112414843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 1125c717a561Smaybee */ 1126744947dcSTom Erickson DMU_META_DNODE(os)->dn_zio = zio; 1127744947dcSTom Erickson dnode_sync(DMU_META_DNODE(os), tx); 1128c717a561Smaybee 112914843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 113014843421SMatthew Ahrens 1131744947dcSTom Erickson if (DMU_USERUSED_DNODE(os) && 1132744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) { 1133744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_zio = zio; 1134744947dcSTom Erickson dnode_sync(DMU_USERUSED_DNODE(os), tx); 1135744947dcSTom Erickson DMU_GROUPUSED_DNODE(os)->dn_zio = zio; 1136744947dcSTom Erickson dnode_sync(DMU_GROUPUSED_DNODE(os), tx); 113714843421SMatthew Ahrens } 113814843421SMatthew Ahrens 1139c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 1140fa9e4066Sahrens 114114843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 114214843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 114314843421SMatthew Ahrens /* 114414843421SMatthew Ahrens * We must create the list here because it uses the 114514843421SMatthew Ahrens * dn_dirty_link[] of this txg. 114614843421SMatthew Ahrens */ 114714843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 114814843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 114914843421SMatthew Ahrens } 115014843421SMatthew Ahrens 115114843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 115214843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1153fa9e4066Sahrens 1154744947dcSTom Erickson list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff]; 1155c717a561Smaybee while (dr = list_head(list)) { 11563b2aab18SMatthew Ahrens ASSERT0(dr->dr_dbuf->db_level); 1157c717a561Smaybee list_remove(list, dr); 1158c717a561Smaybee if (dr->dr_zio) 1159c717a561Smaybee zio_nowait(dr->dr_zio); 1160c717a561Smaybee } 1161c717a561Smaybee /* 1162c717a561Smaybee * Free intent log blocks up to this tx. 1163c717a561Smaybee */ 1164c717a561Smaybee zil_sync(os->os_zil, tx); 1165088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 1166c717a561Smaybee zio_nowait(zio); 1167fa9e4066Sahrens } 1168fa9e4066Sahrens 1169b24ab676SJeff Bonwick boolean_t 1170b24ab676SJeff Bonwick dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1171b24ab676SJeff Bonwick { 1172b24ab676SJeff Bonwick return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1173b24ab676SJeff Bonwick !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1174b24ab676SJeff Bonwick } 1175b24ab676SJeff Bonwick 1176744947dcSTom Erickson static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 117714843421SMatthew Ahrens 117814843421SMatthew Ahrens void 117914843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 118014843421SMatthew Ahrens { 118114843421SMatthew Ahrens used_cbs[ost] = cb; 118214843421SMatthew Ahrens } 118314843421SMatthew Ahrens 118414843421SMatthew Ahrens boolean_t 1185503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 118614843421SMatthew Ahrens { 118714843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 1188744947dcSTom Erickson used_cbs[os->os_phys->os_type] != NULL && 1189744947dcSTom Erickson DMU_USERUSED_DNODE(os) != NULL); 119014843421SMatthew Ahrens } 119114843421SMatthew Ahrens 11929966ca11SMatthew Ahrens static void 11930a586ceaSMark Shellenbaum do_userquota_update(objset_t *os, uint64_t used, uint64_t flags, 11940a586ceaSMark Shellenbaum uint64_t user, uint64_t group, boolean_t subtract, dmu_tx_t *tx) 11959966ca11SMatthew Ahrens { 11960a586ceaSMark Shellenbaum if ((flags & DNODE_FLAG_USERUSED_ACCOUNTED)) { 11970a586ceaSMark Shellenbaum int64_t delta = DNODE_SIZE + used; 11989966ca11SMatthew Ahrens if (subtract) 11999966ca11SMatthew Ahrens delta = -delta; 1200b420f3adSRichard Lowe VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 12019966ca11SMatthew Ahrens user, delta, tx)); 1202b420f3adSRichard Lowe VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 12039966ca11SMatthew Ahrens group, delta, tx)); 12049966ca11SMatthew Ahrens } 12059966ca11SMatthew Ahrens } 12069966ca11SMatthew Ahrens 120714843421SMatthew Ahrens void 12080a586ceaSMark Shellenbaum dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx) 120914843421SMatthew Ahrens { 121014843421SMatthew Ahrens dnode_t *dn; 121114843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 121214843421SMatthew Ahrens 121314843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 121414843421SMatthew Ahrens 121514843421SMatthew Ahrens while (dn = list_head(list)) { 12161d8ccc7bSMark Shellenbaum int flags; 121714843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 121814843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 121914843421SMatthew Ahrens dn->dn_phys->dn_flags & 122014843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 122114843421SMatthew Ahrens 122214843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 1223744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) { 1224503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 122514843421SMatthew Ahrens DMU_USERUSED_OBJECT, 122614843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1227503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 122814843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 122914843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 123014843421SMatthew Ahrens } 123114843421SMatthew Ahrens 123214843421SMatthew Ahrens /* 12339966ca11SMatthew Ahrens * We intentionally modify the zap object even if the 12340a586ceaSMark Shellenbaum * net delta is zero. Otherwise 12359966ca11SMatthew Ahrens * the block of the zap obj could be shared between 12369966ca11SMatthew Ahrens * datasets but need to be different between them after 12379966ca11SMatthew Ahrens * a bprewrite. 123814843421SMatthew Ahrens */ 123914843421SMatthew Ahrens 12401d8ccc7bSMark Shellenbaum flags = dn->dn_id_flags; 12411d8ccc7bSMark Shellenbaum ASSERT(flags); 12421d8ccc7bSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 12430a586ceaSMark Shellenbaum do_userquota_update(os, dn->dn_oldused, dn->dn_oldflags, 12440a586ceaSMark Shellenbaum dn->dn_olduid, dn->dn_oldgid, B_TRUE, tx); 12450a586ceaSMark Shellenbaum } 12461d8ccc7bSMark Shellenbaum if (flags & DN_ID_NEW_EXIST) { 12470a586ceaSMark Shellenbaum do_userquota_update(os, DN_USED_BYTES(dn->dn_phys), 12480a586ceaSMark Shellenbaum dn->dn_phys->dn_flags, dn->dn_newuid, 12490a586ceaSMark Shellenbaum dn->dn_newgid, B_FALSE, tx); 12500a586ceaSMark Shellenbaum } 12510a586ceaSMark Shellenbaum 12521d8ccc7bSMark Shellenbaum mutex_enter(&dn->dn_mtx); 12530a586ceaSMark Shellenbaum dn->dn_oldused = 0; 12540a586ceaSMark Shellenbaum dn->dn_oldflags = 0; 12550a586ceaSMark Shellenbaum if (dn->dn_id_flags & DN_ID_NEW_EXIST) { 12560a586ceaSMark Shellenbaum dn->dn_olduid = dn->dn_newuid; 12570a586ceaSMark Shellenbaum dn->dn_oldgid = dn->dn_newgid; 12580a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 12590a586ceaSMark Shellenbaum if (dn->dn_bonuslen == 0) 12600a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 12610a586ceaSMark Shellenbaum else 12620a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 12630a586ceaSMark Shellenbaum } 126428d97a71SMark Shellenbaum dn->dn_id_flags &= ~(DN_ID_NEW_EXIST); 126514843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 126614843421SMatthew Ahrens 126714843421SMatthew Ahrens list_remove(list, dn); 126814843421SMatthew Ahrens dnode_rele(dn, list); 126914843421SMatthew Ahrens } 127014843421SMatthew Ahrens } 127114843421SMatthew Ahrens 127206e0070dSMark Shellenbaum /* 127306e0070dSMark Shellenbaum * Returns a pointer to data to find uid/gid from 127406e0070dSMark Shellenbaum * 127506e0070dSMark Shellenbaum * If a dirty record for transaction group that is syncing can't 127606e0070dSMark Shellenbaum * be found then NULL is returned. In the NULL case it is assumed 127706e0070dSMark Shellenbaum * the uid/gid aren't changing. 127806e0070dSMark Shellenbaum */ 127906e0070dSMark Shellenbaum static void * 128006e0070dSMark Shellenbaum dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx) 128106e0070dSMark Shellenbaum { 128206e0070dSMark Shellenbaum dbuf_dirty_record_t *dr, **drp; 128306e0070dSMark Shellenbaum void *data; 128406e0070dSMark Shellenbaum 128506e0070dSMark Shellenbaum if (db->db_dirtycnt == 0) 128606e0070dSMark Shellenbaum return (db->db.db_data); /* Nothing is changing */ 128706e0070dSMark Shellenbaum 128806e0070dSMark Shellenbaum for (drp = &db->db_last_dirty; (dr = *drp) != NULL; drp = &dr->dr_next) 128906e0070dSMark Shellenbaum if (dr->dr_txg == tx->tx_txg) 129006e0070dSMark Shellenbaum break; 129106e0070dSMark Shellenbaum 1292744947dcSTom Erickson if (dr == NULL) { 129306e0070dSMark Shellenbaum data = NULL; 1294744947dcSTom Erickson } else { 1295744947dcSTom Erickson dnode_t *dn; 1296744947dcSTom Erickson 1297744947dcSTom Erickson DB_DNODE_ENTER(dr->dr_dbuf); 1298744947dcSTom Erickson dn = DB_DNODE(dr->dr_dbuf); 1299744947dcSTom Erickson 1300744947dcSTom Erickson if (dn->dn_bonuslen == 0 && 1301744947dcSTom Erickson dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID) 1302744947dcSTom Erickson data = dr->dt.dl.dr_data->b_data; 1303744947dcSTom Erickson else 1304744947dcSTom Erickson data = dr->dt.dl.dr_data; 1305744947dcSTom Erickson 1306744947dcSTom Erickson DB_DNODE_EXIT(dr->dr_dbuf); 1307744947dcSTom Erickson } 1308744947dcSTom Erickson 130906e0070dSMark Shellenbaum return (data); 131006e0070dSMark Shellenbaum } 131106e0070dSMark Shellenbaum 13120a586ceaSMark Shellenbaum void 131306e0070dSMark Shellenbaum dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx) 13140a586ceaSMark Shellenbaum { 13150a586ceaSMark Shellenbaum objset_t *os = dn->dn_objset; 13160a586ceaSMark Shellenbaum void *data = NULL; 131706e0070dSMark Shellenbaum dmu_buf_impl_t *db = NULL; 1318d5285caeSGeorge Wilson uint64_t *user = NULL; 1319d5285caeSGeorge Wilson uint64_t *group = NULL; 13200a586ceaSMark Shellenbaum int flags = dn->dn_id_flags; 13210a586ceaSMark Shellenbaum int error; 132206e0070dSMark Shellenbaum boolean_t have_spill = B_FALSE; 13230a586ceaSMark Shellenbaum 13240a586ceaSMark Shellenbaum if (!dmu_objset_userused_enabled(dn->dn_objset)) 13250a586ceaSMark Shellenbaum return; 13260a586ceaSMark Shellenbaum 13270a586ceaSMark Shellenbaum if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST| 13280a586ceaSMark Shellenbaum DN_ID_CHKED_SPILL))) 13290a586ceaSMark Shellenbaum return; 13300a586ceaSMark Shellenbaum 13310a586ceaSMark Shellenbaum if (before && dn->dn_bonuslen != 0) 13320a586ceaSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 133306e0070dSMark Shellenbaum else if (!before && dn->dn_bonuslen != 0) { 133406e0070dSMark Shellenbaum if (dn->dn_bonus) { 133506e0070dSMark Shellenbaum db = dn->dn_bonus; 133606e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 133706e0070dSMark Shellenbaum data = dmu_objset_userquota_find_data(db, tx); 133806e0070dSMark Shellenbaum } else { 133906e0070dSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 134006e0070dSMark Shellenbaum } 134106e0070dSMark Shellenbaum } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) { 13420a586ceaSMark Shellenbaum int rf = 0; 13430a586ceaSMark Shellenbaum 13440a586ceaSMark Shellenbaum if (RW_WRITE_HELD(&dn->dn_struct_rwlock)) 13450a586ceaSMark Shellenbaum rf |= DB_RF_HAVESTRUCT; 13461d8ccc7bSMark Shellenbaum error = dmu_spill_hold_by_dnode(dn, 13471d8ccc7bSMark Shellenbaum rf | DB_RF_MUST_SUCCEED, 134806e0070dSMark Shellenbaum FTAG, (dmu_buf_t **)&db); 13490a586ceaSMark Shellenbaum ASSERT(error == 0); 135006e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 135106e0070dSMark Shellenbaum data = (before) ? db->db.db_data : 135206e0070dSMark Shellenbaum dmu_objset_userquota_find_data(db, tx); 135306e0070dSMark Shellenbaum have_spill = B_TRUE; 13540a586ceaSMark Shellenbaum } else { 13550a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 13560a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 13570a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 13580a586ceaSMark Shellenbaum return; 13590a586ceaSMark Shellenbaum } 13600a586ceaSMark Shellenbaum 13610a586ceaSMark Shellenbaum if (before) { 136206e0070dSMark Shellenbaum ASSERT(data); 13630a586ceaSMark Shellenbaum user = &dn->dn_olduid; 13640a586ceaSMark Shellenbaum group = &dn->dn_oldgid; 136506e0070dSMark Shellenbaum } else if (data) { 13660a586ceaSMark Shellenbaum user = &dn->dn_newuid; 13670a586ceaSMark Shellenbaum group = &dn->dn_newgid; 13680a586ceaSMark Shellenbaum } 13690a586ceaSMark Shellenbaum 137006e0070dSMark Shellenbaum /* 137106e0070dSMark Shellenbaum * Must always call the callback in case the object 137206e0070dSMark Shellenbaum * type has changed and that type isn't an object type to track 137306e0070dSMark Shellenbaum */ 13740a586ceaSMark Shellenbaum error = used_cbs[os->os_phys->os_type](dn->dn_bonustype, data, 13750a586ceaSMark Shellenbaum user, group); 13760a586ceaSMark Shellenbaum 137706e0070dSMark Shellenbaum /* 137806e0070dSMark Shellenbaum * Preserve existing uid/gid when the callback can't determine 137906e0070dSMark Shellenbaum * what the new uid/gid are and the callback returned EEXIST. 138006e0070dSMark Shellenbaum * The EEXIST error tells us to just use the existing uid/gid. 138106e0070dSMark Shellenbaum * If we don't know what the old values are then just assign 138206e0070dSMark Shellenbaum * them to 0, since that is a new file being created. 138306e0070dSMark Shellenbaum */ 138406e0070dSMark Shellenbaum if (!before && data == NULL && error == EEXIST) { 138506e0070dSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 138606e0070dSMark Shellenbaum dn->dn_newuid = dn->dn_olduid; 138706e0070dSMark Shellenbaum dn->dn_newgid = dn->dn_oldgid; 138806e0070dSMark Shellenbaum } else { 138906e0070dSMark Shellenbaum dn->dn_newuid = 0; 139006e0070dSMark Shellenbaum dn->dn_newgid = 0; 139106e0070dSMark Shellenbaum } 139206e0070dSMark Shellenbaum error = 0; 139306e0070dSMark Shellenbaum } 139406e0070dSMark Shellenbaum 139506e0070dSMark Shellenbaum if (db) 139606e0070dSMark Shellenbaum mutex_exit(&db->db_mtx); 139706e0070dSMark Shellenbaum 13980a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 13990a586ceaSMark Shellenbaum if (error == 0 && before) 14000a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 14010a586ceaSMark Shellenbaum if (error == 0 && !before) 14020a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_NEW_EXIST; 14030a586ceaSMark Shellenbaum 140406e0070dSMark Shellenbaum if (have_spill) { 14050a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 14060a586ceaSMark Shellenbaum } else { 14070a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 14080a586ceaSMark Shellenbaum } 14090a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 141006e0070dSMark Shellenbaum if (have_spill) 141106e0070dSMark Shellenbaum dmu_buf_rele((dmu_buf_t *)db, FTAG); 14120a586ceaSMark Shellenbaum } 14130a586ceaSMark Shellenbaum 141414843421SMatthew Ahrens boolean_t 141514843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 141614843421SMatthew Ahrens { 1417503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 141814843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 141914843421SMatthew Ahrens } 142014843421SMatthew Ahrens 142114843421SMatthew Ahrens int 142214843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 142314843421SMatthew Ahrens { 142414843421SMatthew Ahrens uint64_t obj; 142514843421SMatthew Ahrens int err = 0; 142614843421SMatthew Ahrens 142714843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 142814843421SMatthew Ahrens return (0); 1429503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 1430be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 143114843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 1432be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 143314843421SMatthew Ahrens 143414843421SMatthew Ahrens /* 143514843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 143614843421SMatthew Ahrens * synced out and now accounted. If this is called 143714843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 143814843421SMatthew Ahrens * that's fine, since we track each object's accounted state 143914843421SMatthew Ahrens * independently. 144014843421SMatthew Ahrens */ 144114843421SMatthew Ahrens 144214843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 144368857716SLin Ling dmu_tx_t *tx; 144414843421SMatthew Ahrens dmu_buf_t *db; 144514843421SMatthew Ahrens int objerr; 144614843421SMatthew Ahrens 144714843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 1448be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 144914843421SMatthew Ahrens 145014843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 14513b2aab18SMatthew Ahrens if (objerr != 0) 145214843421SMatthew Ahrens continue; 145368857716SLin Ling tx = dmu_tx_create(os); 145414843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 145514843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 14563b2aab18SMatthew Ahrens if (objerr != 0) { 145714843421SMatthew Ahrens dmu_tx_abort(tx); 145814843421SMatthew Ahrens continue; 145914843421SMatthew Ahrens } 146014843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 146114843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 146214843421SMatthew Ahrens dmu_tx_commit(tx); 146314843421SMatthew Ahrens } 146414843421SMatthew Ahrens 1465503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 146614843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 146714843421SMatthew Ahrens return (0); 146814843421SMatthew Ahrens } 146914843421SMatthew Ahrens 1470fa9e4066Sahrens void 1471a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1472a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1473fa9e4066Sahrens { 1474503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1475a2eea2e1Sahrens usedobjsp, availobjsp); 1476a2eea2e1Sahrens } 1477a2eea2e1Sahrens 1478a2eea2e1Sahrens uint64_t 1479a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1480a2eea2e1Sahrens { 1481503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1482a2eea2e1Sahrens } 1483a2eea2e1Sahrens 1484a2eea2e1Sahrens void 1485a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1486a2eea2e1Sahrens { 1487503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1488503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1489503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1490a2eea2e1Sahrens } 1491a2eea2e1Sahrens 1492a2eea2e1Sahrens void 1493a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1494a2eea2e1Sahrens { 1495503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1496503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1497a2eea2e1Sahrens 1498503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1499503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1500a2eea2e1Sahrens 1501a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1502503ad85cSMatthew Ahrens os->os_phys->os_type); 150314843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 150414843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1505fa9e4066Sahrens } 1506fa9e4066Sahrens 1507fa9e4066Sahrens int 1508fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1509fa9e4066Sahrens { 1510503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1511bc9014e6SJustin Gibbs return (os->os_dsl_dataset->ds_is_snapshot); 1512fa9e4066Sahrens else 1513fa9e4066Sahrens return (B_FALSE); 1514fa9e4066Sahrens } 1515fa9e4066Sahrens 1516ab04eb8eStimh int 1517ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1518ab04eb8eStimh boolean_t *conflict) 1519ab04eb8eStimh { 1520503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1521ab04eb8eStimh uint64_t ignored; 1522ab04eb8eStimh 1523c1379625SJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) 1524be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1525ab04eb8eStimh 1526ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1527c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored, 1528c1379625SJustin T. Gibbs MT_FIRST, real, maxlen, conflict)); 1529ab04eb8eStimh } 1530ab04eb8eStimh 1531fa9e4066Sahrens int 1532fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1533b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1534fa9e4066Sahrens { 1535503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1536fa9e4066Sahrens zap_cursor_t cursor; 1537fa9e4066Sahrens zap_attribute_t attr; 1538fa9e4066Sahrens 15393b2aab18SMatthew Ahrens ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); 15403b2aab18SMatthew Ahrens 1541c1379625SJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) 1542be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1543fa9e4066Sahrens 1544fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1545fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1546c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp); 1547fa9e4066Sahrens 154887e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 154987e5029aSahrens zap_cursor_fini(&cursor); 1550be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 155187e5029aSahrens } 155287e5029aSahrens 155387e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 155487e5029aSahrens zap_cursor_fini(&cursor); 1555be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 155687e5029aSahrens } 155787e5029aSahrens 155887e5029aSahrens (void) strcpy(name, attr.za_name); 155987e5029aSahrens if (idp) 156087e5029aSahrens *idp = attr.za_first_integer; 1561b38f0970Sck if (case_conflict) 1562b38f0970Sck *case_conflict = attr.za_normalization_conflict; 156387e5029aSahrens zap_cursor_advance(&cursor); 156487e5029aSahrens *offp = zap_cursor_serialize(&cursor); 156587e5029aSahrens zap_cursor_fini(&cursor); 156687e5029aSahrens 156787e5029aSahrens return (0); 156887e5029aSahrens } 156987e5029aSahrens 157087e5029aSahrens int 157187e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 157287e5029aSahrens uint64_t *idp, uint64_t *offp) 157387e5029aSahrens { 1574503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 157587e5029aSahrens zap_cursor_t cursor; 157687e5029aSahrens zap_attribute_t attr; 157787e5029aSahrens 157887e5029aSahrens /* there is no next dir on a snapshot! */ 1579503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 1580c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_head_dataset_obj) 1581be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1582fa9e4066Sahrens 158387e5029aSahrens zap_cursor_init_serialized(&cursor, 158487e5029aSahrens dd->dd_pool->dp_meta_objset, 1585c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp); 158687e5029aSahrens 158787e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 158887e5029aSahrens zap_cursor_fini(&cursor); 1589be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 159087e5029aSahrens } 159187e5029aSahrens 159287e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 159387e5029aSahrens zap_cursor_fini(&cursor); 1594be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 159587e5029aSahrens } 1596fa9e4066Sahrens 1597fa9e4066Sahrens (void) strcpy(name, attr.za_name); 159887e5029aSahrens if (idp) 159987e5029aSahrens *idp = attr.za_first_integer; 1600fa9e4066Sahrens zap_cursor_advance(&cursor); 1601fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 160287e5029aSahrens zap_cursor_fini(&cursor); 1603fa9e4066Sahrens 1604fa9e4066Sahrens return (0); 1605fa9e4066Sahrens } 1606fa9e4066Sahrens 160712380e1eSArne Jansen typedef struct dmu_objset_find_ctx { 160812380e1eSArne Jansen taskq_t *dc_tq; 160912380e1eSArne Jansen dsl_pool_t *dc_dp; 161012380e1eSArne Jansen uint64_t dc_ddobj; 161112380e1eSArne Jansen int (*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *); 161212380e1eSArne Jansen void *dc_arg; 161312380e1eSArne Jansen int dc_flags; 161412380e1eSArne Jansen kmutex_t *dc_error_lock; 161512380e1eSArne Jansen int *dc_error; 161612380e1eSArne Jansen } dmu_objset_find_ctx_t; 161712380e1eSArne Jansen 161812380e1eSArne Jansen static void 161912380e1eSArne Jansen dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp) 1620088f3894Sahrens { 162112380e1eSArne Jansen dsl_pool_t *dp = dcp->dc_dp; 162212380e1eSArne Jansen dmu_objset_find_ctx_t *child_dcp; 16233b2aab18SMatthew Ahrens dsl_dir_t *dd; 16243b2aab18SMatthew Ahrens dsl_dataset_t *ds; 16253b2aab18SMatthew Ahrens zap_cursor_t zc; 16263b2aab18SMatthew Ahrens zap_attribute_t *attr; 16273b2aab18SMatthew Ahrens uint64_t thisobj; 162812380e1eSArne Jansen int err = 0; 16293b2aab18SMatthew Ahrens 163012380e1eSArne Jansen /* don't process if there already was an error */ 163112380e1eSArne Jansen if (*dcp->dc_error != 0) 163212380e1eSArne Jansen goto out; 16333b2aab18SMatthew Ahrens 163412380e1eSArne Jansen err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, NULL, FTAG, &dd); 16353b2aab18SMatthew Ahrens if (err != 0) 163612380e1eSArne Jansen goto out; 16373b2aab18SMatthew Ahrens 16383b2aab18SMatthew Ahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 16393b2aab18SMatthew Ahrens if (dd->dd_myname[0] == '$') { 16403b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 164112380e1eSArne Jansen goto out; 16423b2aab18SMatthew Ahrens } 16433b2aab18SMatthew Ahrens 1644c1379625SJustin T. Gibbs thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; 16453b2aab18SMatthew Ahrens attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 16463b2aab18SMatthew Ahrens 16473b2aab18SMatthew Ahrens /* 16483b2aab18SMatthew Ahrens * Iterate over all children. 16493b2aab18SMatthew Ahrens */ 165012380e1eSArne Jansen if (dcp->dc_flags & DS_FIND_CHILDREN) { 16513b2aab18SMatthew Ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 1652c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_child_dir_zapobj); 16533b2aab18SMatthew Ahrens zap_cursor_retrieve(&zc, attr) == 0; 16543b2aab18SMatthew Ahrens (void) zap_cursor_advance(&zc)) { 16553b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 16563b2aab18SMatthew Ahrens sizeof (uint64_t)); 16573b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 16583b2aab18SMatthew Ahrens 165912380e1eSArne Jansen child_dcp = kmem_alloc(sizeof (*child_dcp), KM_SLEEP); 166012380e1eSArne Jansen *child_dcp = *dcp; 166112380e1eSArne Jansen child_dcp->dc_ddobj = attr->za_first_integer; 166212380e1eSArne Jansen if (dcp->dc_tq != NULL) 166312380e1eSArne Jansen (void) taskq_dispatch(dcp->dc_tq, 166412380e1eSArne Jansen dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP); 166512380e1eSArne Jansen else 166612380e1eSArne Jansen dmu_objset_find_dp_impl(child_dcp); 16673b2aab18SMatthew Ahrens } 16683b2aab18SMatthew Ahrens zap_cursor_fini(&zc); 16693b2aab18SMatthew Ahrens } 16703b2aab18SMatthew Ahrens 16713b2aab18SMatthew Ahrens /* 16723b2aab18SMatthew Ahrens * Iterate over all snapshots. 16733b2aab18SMatthew Ahrens */ 167412380e1eSArne Jansen if (dcp->dc_flags & DS_FIND_SNAPSHOTS) { 16753b2aab18SMatthew Ahrens dsl_dataset_t *ds; 16763b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 16773b2aab18SMatthew Ahrens 16783b2aab18SMatthew Ahrens if (err == 0) { 1679c1379625SJustin T. Gibbs uint64_t snapobj; 1680c1379625SJustin T. Gibbs 1681c1379625SJustin T. Gibbs snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; 16823b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 16833b2aab18SMatthew Ahrens 16843b2aab18SMatthew Ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 16853b2aab18SMatthew Ahrens zap_cursor_retrieve(&zc, attr) == 0; 16863b2aab18SMatthew Ahrens (void) zap_cursor_advance(&zc)) { 16873b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 16883b2aab18SMatthew Ahrens sizeof (uint64_t)); 16893b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 16903b2aab18SMatthew Ahrens 16913b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, 16923b2aab18SMatthew Ahrens attr->za_first_integer, FTAG, &ds); 16933b2aab18SMatthew Ahrens if (err != 0) 16943b2aab18SMatthew Ahrens break; 169512380e1eSArne Jansen err = dcp->dc_func(dp, ds, dcp->dc_arg); 16963b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 16973b2aab18SMatthew Ahrens if (err != 0) 16983b2aab18SMatthew Ahrens break; 16993b2aab18SMatthew Ahrens } 17003b2aab18SMatthew Ahrens zap_cursor_fini(&zc); 17013b2aab18SMatthew Ahrens } 17023b2aab18SMatthew Ahrens } 17033b2aab18SMatthew Ahrens 17043b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 17053b2aab18SMatthew Ahrens kmem_free(attr, sizeof (zap_attribute_t)); 17063b2aab18SMatthew Ahrens 17073b2aab18SMatthew Ahrens if (err != 0) 170812380e1eSArne Jansen goto out; 17093b2aab18SMatthew Ahrens 17103b2aab18SMatthew Ahrens /* 17113b2aab18SMatthew Ahrens * Apply to self. 17123b2aab18SMatthew Ahrens */ 17133b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 17143b2aab18SMatthew Ahrens if (err != 0) 171512380e1eSArne Jansen goto out; 171612380e1eSArne Jansen err = dcp->dc_func(dp, ds, dcp->dc_arg); 17173b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 171812380e1eSArne Jansen 171912380e1eSArne Jansen out: 172012380e1eSArne Jansen if (err != 0) { 172112380e1eSArne Jansen mutex_enter(dcp->dc_error_lock); 172212380e1eSArne Jansen /* only keep first error */ 172312380e1eSArne Jansen if (*dcp->dc_error == 0) 172412380e1eSArne Jansen *dcp->dc_error = err; 172512380e1eSArne Jansen mutex_exit(dcp->dc_error_lock); 172612380e1eSArne Jansen } 172712380e1eSArne Jansen 172812380e1eSArne Jansen kmem_free(dcp, sizeof (*dcp)); 172912380e1eSArne Jansen } 173012380e1eSArne Jansen 173112380e1eSArne Jansen static void 173212380e1eSArne Jansen dmu_objset_find_dp_cb(void *arg) 173312380e1eSArne Jansen { 173412380e1eSArne Jansen dmu_objset_find_ctx_t *dcp = arg; 173512380e1eSArne Jansen dsl_pool_t *dp = dcp->dc_dp; 173612380e1eSArne Jansen 17371d3f896fSArne Jansen /* 17381d3f896fSArne Jansen * We need to get a pool_config_lock here, as there are several 17391d3f896fSArne Jansen * asssert(pool_config_held) down the stack. Getting a lock via 17401d3f896fSArne Jansen * dsl_pool_config_enter is risky, as it might be stalled by a 17411d3f896fSArne Jansen * pending writer. This would deadlock, as the write lock can 17421d3f896fSArne Jansen * only be granted when our parent thread gives up the lock. 17431d3f896fSArne Jansen * The _prio interface gives us priority over a pending writer. 17441d3f896fSArne Jansen */ 17451d3f896fSArne Jansen dsl_pool_config_enter_prio(dp, FTAG); 174612380e1eSArne Jansen 174712380e1eSArne Jansen dmu_objset_find_dp_impl(dcp); 174812380e1eSArne Jansen 174912380e1eSArne Jansen dsl_pool_config_exit(dp, FTAG); 175012380e1eSArne Jansen } 175112380e1eSArne Jansen 175212380e1eSArne Jansen /* 175312380e1eSArne Jansen * Find objsets under and including ddobj, call func(ds) on each. 175412380e1eSArne Jansen * The order for the enumeration is completely undefined. 175512380e1eSArne Jansen * func is called with dsl_pool_config held. 175612380e1eSArne Jansen */ 175712380e1eSArne Jansen int 175812380e1eSArne Jansen dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj, 175912380e1eSArne Jansen int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags) 176012380e1eSArne Jansen { 176112380e1eSArne Jansen int error = 0; 176212380e1eSArne Jansen taskq_t *tq = NULL; 176312380e1eSArne Jansen int ntasks; 176412380e1eSArne Jansen dmu_objset_find_ctx_t *dcp; 176512380e1eSArne Jansen kmutex_t err_lock; 176612380e1eSArne Jansen 176712380e1eSArne Jansen mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL); 176812380e1eSArne Jansen dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP); 176912380e1eSArne Jansen dcp->dc_tq = NULL; 177012380e1eSArne Jansen dcp->dc_dp = dp; 177112380e1eSArne Jansen dcp->dc_ddobj = ddobj; 177212380e1eSArne Jansen dcp->dc_func = func; 177312380e1eSArne Jansen dcp->dc_arg = arg; 177412380e1eSArne Jansen dcp->dc_flags = flags; 177512380e1eSArne Jansen dcp->dc_error_lock = &err_lock; 177612380e1eSArne Jansen dcp->dc_error = &error; 177712380e1eSArne Jansen 177812380e1eSArne Jansen if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) { 177912380e1eSArne Jansen /* 178012380e1eSArne Jansen * In case a write lock is held we can't make use of 178112380e1eSArne Jansen * parallelism, as down the stack of the worker threads 178212380e1eSArne Jansen * the lock is asserted via dsl_pool_config_held. 178312380e1eSArne Jansen * In case of a read lock this is solved by getting a read 178412380e1eSArne Jansen * lock in each worker thread, which isn't possible in case 178512380e1eSArne Jansen * of a writer lock. So we fall back to the synchronous path 178612380e1eSArne Jansen * here. 178712380e1eSArne Jansen * In the future it might be possible to get some magic into 178812380e1eSArne Jansen * dsl_pool_config_held in a way that it returns true for 178912380e1eSArne Jansen * the worker threads so that a single lock held from this 179012380e1eSArne Jansen * thread suffices. For now, stay single threaded. 179112380e1eSArne Jansen */ 179212380e1eSArne Jansen dmu_objset_find_dp_impl(dcp); 179312380e1eSArne Jansen 179412380e1eSArne Jansen return (error); 179512380e1eSArne Jansen } 179612380e1eSArne Jansen 179712380e1eSArne Jansen ntasks = dmu_find_threads; 179812380e1eSArne Jansen if (ntasks == 0) 179912380e1eSArne Jansen ntasks = vdev_count_leaves(dp->dp_spa) * 4; 180012380e1eSArne Jansen tq = taskq_create("dmu_objset_find", ntasks, minclsyspri, ntasks, 180112380e1eSArne Jansen INT_MAX, 0); 180212380e1eSArne Jansen if (tq == NULL) { 180312380e1eSArne Jansen kmem_free(dcp, sizeof (*dcp)); 180412380e1eSArne Jansen return (SET_ERROR(ENOMEM)); 180512380e1eSArne Jansen } 180612380e1eSArne Jansen dcp->dc_tq = tq; 180712380e1eSArne Jansen 180812380e1eSArne Jansen /* dcp will be freed by task */ 180912380e1eSArne Jansen (void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP); 181012380e1eSArne Jansen 181112380e1eSArne Jansen /* 181212380e1eSArne Jansen * PORTING: this code relies on the property of taskq_wait to wait 181312380e1eSArne Jansen * until no more tasks are queued and no more tasks are active. As 181412380e1eSArne Jansen * we always queue new tasks from within other tasks, task_wait 181512380e1eSArne Jansen * reliably waits for the full recursion to finish, even though we 181612380e1eSArne Jansen * enqueue new tasks after taskq_wait has been called. 181712380e1eSArne Jansen * On platforms other than illumos, taskq_wait may not have this 181812380e1eSArne Jansen * property. 181912380e1eSArne Jansen */ 182012380e1eSArne Jansen taskq_wait(tq); 182112380e1eSArne Jansen taskq_destroy(tq); 182212380e1eSArne Jansen mutex_destroy(&err_lock); 182312380e1eSArne Jansen 182412380e1eSArne Jansen return (error); 1825088f3894Sahrens } 1826088f3894Sahrens 1827088f3894Sahrens /* 18283b2aab18SMatthew Ahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 18293b2aab18SMatthew Ahrens * The dp_config_rwlock must not be held when this is called, and it 18303b2aab18SMatthew Ahrens * will not be held when the callback is called. 18313b2aab18SMatthew Ahrens * Therefore this function should only be used when the pool is not changing 18323b2aab18SMatthew Ahrens * (e.g. in syncing context), or the callback can deal with the possible races. 1833088f3894Sahrens */ 18343b2aab18SMatthew Ahrens static int 18353b2aab18SMatthew Ahrens dmu_objset_find_impl(spa_t *spa, const char *name, 18363b2aab18SMatthew Ahrens int func(const char *, void *), void *arg, int flags) 1837fa9e4066Sahrens { 1838fa9e4066Sahrens dsl_dir_t *dd; 18393b2aab18SMatthew Ahrens dsl_pool_t *dp = spa_get_dsl(spa); 1840088f3894Sahrens dsl_dataset_t *ds; 1841fa9e4066Sahrens zap_cursor_t zc; 1842b7661cccSmmusante zap_attribute_t *attr; 1843fa9e4066Sahrens char *child; 1844088f3894Sahrens uint64_t thisobj; 1845088f3894Sahrens int err; 1846fa9e4066Sahrens 18473b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 18483b2aab18SMatthew Ahrens 18493b2aab18SMatthew Ahrens err = dsl_dir_hold(dp, name, FTAG, &dd, NULL); 18503b2aab18SMatthew Ahrens if (err != 0) { 18513b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 18521d452cf5Sahrens return (err); 18533b2aab18SMatthew Ahrens } 1854fa9e4066Sahrens 1855088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1856088f3894Sahrens if (dd->dd_myname[0] == '$') { 18573b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 18583b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1859088f3894Sahrens return (0); 1860088f3894Sahrens } 1861088f3894Sahrens 1862c1379625SJustin T. Gibbs thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; 1863b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1864fa9e4066Sahrens 1865fa9e4066Sahrens /* 1866fa9e4066Sahrens * Iterate over all children. 1867fa9e4066Sahrens */ 18680b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1869088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 1870c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_child_dir_zapobj); 1871b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 18720b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 18733b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 18743b2aab18SMatthew Ahrens sizeof (uint64_t)); 18753b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 1876fa9e4066Sahrens 1877486ae710SMatthew Ahrens child = kmem_asprintf("%s/%s", name, attr->za_name); 18783b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 18793b2aab18SMatthew Ahrens err = dmu_objset_find_impl(spa, child, 18803b2aab18SMatthew Ahrens func, arg, flags); 18813b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 1882486ae710SMatthew Ahrens strfree(child); 18833b2aab18SMatthew Ahrens if (err != 0) 18840b69c2f0Sahrens break; 18850b69c2f0Sahrens } 18860b69c2f0Sahrens zap_cursor_fini(&zc); 18871d452cf5Sahrens 18883b2aab18SMatthew Ahrens if (err != 0) { 18893b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 18903b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1891b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 18920b69c2f0Sahrens return (err); 18930b69c2f0Sahrens } 1894fa9e4066Sahrens } 1895fa9e4066Sahrens 1896fa9e4066Sahrens /* 1897fa9e4066Sahrens * Iterate over all snapshots. 1898fa9e4066Sahrens */ 1899088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1900088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1901088f3894Sahrens 1902088f3894Sahrens if (err == 0) { 1903c1379625SJustin T. Gibbs uint64_t snapobj; 1904c1379625SJustin T. Gibbs 1905c1379625SJustin T. Gibbs snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; 1906088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1907088f3894Sahrens 1908088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1909088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1910088f3894Sahrens (void) zap_cursor_advance(&zc)) { 19113b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 1912088f3894Sahrens sizeof (uint64_t)); 19133b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 1914088f3894Sahrens 1915486ae710SMatthew Ahrens child = kmem_asprintf("%s@%s", 1916486ae710SMatthew Ahrens name, attr->za_name); 19173b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 19183b2aab18SMatthew Ahrens err = func(child, arg); 19193b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 1920486ae710SMatthew Ahrens strfree(child); 19213b2aab18SMatthew Ahrens if (err != 0) 1922088f3894Sahrens break; 1923088f3894Sahrens } 1924088f3894Sahrens zap_cursor_fini(&zc); 1925fa9e4066Sahrens } 1926fa9e4066Sahrens } 1927fa9e4066Sahrens 19283b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 1929b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 19303b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1931fa9e4066Sahrens 19323b2aab18SMatthew Ahrens if (err != 0) 19331d452cf5Sahrens return (err); 19341d452cf5Sahrens 19353b2aab18SMatthew Ahrens /* Apply to self. */ 19363b2aab18SMatthew Ahrens return (func(name, arg)); 1937fa9e4066Sahrens } 1938f18faf3fSek 19393b2aab18SMatthew Ahrens /* 19403b2aab18SMatthew Ahrens * See comment above dmu_objset_find_impl(). 19413b2aab18SMatthew Ahrens */ 19427f73c863SRich Morris int 19433b2aab18SMatthew Ahrens dmu_objset_find(char *name, int func(const char *, void *), void *arg, 19443b2aab18SMatthew Ahrens int flags) 19457f73c863SRich Morris { 19463b2aab18SMatthew Ahrens spa_t *spa; 19473b2aab18SMatthew Ahrens int error; 19487f73c863SRich Morris 19493b2aab18SMatthew Ahrens error = spa_open(name, &spa, FTAG); 19503b2aab18SMatthew Ahrens if (error != 0) 19513b2aab18SMatthew Ahrens return (error); 19523b2aab18SMatthew Ahrens error = dmu_objset_find_impl(spa, name, func, arg, flags); 19533b2aab18SMatthew Ahrens spa_close(spa, FTAG); 19543b2aab18SMatthew Ahrens return (error); 19557f73c863SRich Morris } 19567f73c863SRich Morris 1957f18faf3fSek void 1958f18faf3fSek dmu_objset_set_user(objset_t *os, void *user_ptr) 1959f18faf3fSek { 1960503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1961503ad85cSMatthew Ahrens os->os_user_ptr = user_ptr; 1962f18faf3fSek } 1963f18faf3fSek 1964f18faf3fSek void * 1965f18faf3fSek dmu_objset_get_user(objset_t *os) 1966f18faf3fSek { 1967503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1968503ad85cSMatthew Ahrens return (os->os_user_ptr); 1969f18faf3fSek } 19703b2aab18SMatthew Ahrens 19713b2aab18SMatthew Ahrens /* 19723b2aab18SMatthew Ahrens * Determine name of filesystem, given name of snapshot. 19733b2aab18SMatthew Ahrens * buf must be at least MAXNAMELEN bytes 19743b2aab18SMatthew Ahrens */ 19753b2aab18SMatthew Ahrens int 19763b2aab18SMatthew Ahrens dmu_fsname(const char *snapname, char *buf) 19773b2aab18SMatthew Ahrens { 19783b2aab18SMatthew Ahrens char *atp = strchr(snapname, '@'); 19793b2aab18SMatthew Ahrens if (atp == NULL) 1980be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 19813b2aab18SMatthew Ahrens if (atp - snapname >= MAXNAMELEN) 1982be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 19833b2aab18SMatthew Ahrens (void) strlcpy(buf, snapname, atp - snapname + 1); 19843b2aab18SMatthew Ahrens return (0); 19853b2aab18SMatthew Ahrens } 1986