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. 28*12380e1eSArne 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> 53*12380e1eSArne 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 61*12380e1eSArne Jansen /* 62*12380e1eSArne Jansen * Tunable to overwrite the maximum number of threads for the parallization 63*12380e1eSArne Jansen * of dmu_objset_find_dp, needed to speed up the import of pools with many 64*12380e1eSArne Jansen * datasets. 65*12380e1eSArne Jansen * Default is 4 times the number of leaf vdevs. 66*12380e1eSArne Jansen */ 67*12380e1eSArne Jansen int dmu_find_threads = 0; 68*12380e1eSArne Jansen 69*12380e1eSArne Jansen static void dmu_objset_find_dp_cb(void *arg); 70*12380e1eSArne 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) { 3653b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3663b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), 367503ad85cSMatthew Ahrens primary_cache_changed_cb, os); 3683b2aab18SMatthew Ahrens if (err == 0) { 3693b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3703b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), 371503ad85cSMatthew Ahrens secondary_cache_changed_cb, os); 3723b2aab18SMatthew Ahrens } 373bc9014e6SJustin Gibbs if (!ds->ds_is_snapshot) { 3743b2aab18SMatthew Ahrens if (err == 0) { 3753b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3763b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_CHECKSUM), 377503ad85cSMatthew Ahrens checksum_changed_cb, os); 3783b2aab18SMatthew Ahrens } 3793b2aab18SMatthew Ahrens if (err == 0) { 3803b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3813b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COMPRESSION), 382503ad85cSMatthew Ahrens compression_changed_cb, os); 3833b2aab18SMatthew Ahrens } 3843b2aab18SMatthew Ahrens if (err == 0) { 3853b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3863b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COPIES), 387503ad85cSMatthew Ahrens copies_changed_cb, os); 3883b2aab18SMatthew Ahrens } 3893b2aab18SMatthew Ahrens if (err == 0) { 3903b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3913b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_DEDUP), 392b24ab676SJeff Bonwick dedup_changed_cb, os); 3933b2aab18SMatthew Ahrens } 3943b2aab18SMatthew Ahrens if (err == 0) { 3953b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 3963b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_LOGBIAS), 397e09fa4daSNeil Perrin logbias_changed_cb, os); 3983b2aab18SMatthew Ahrens } 3993b2aab18SMatthew Ahrens if (err == 0) { 4003b2aab18SMatthew Ahrens err = dsl_prop_register(ds, 4013b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SYNC), 40255da60b9SMark J Musante sync_changed_cb, os); 4033b2aab18SMatthew Ahrens } 404edf345e6SMatthew Ahrens if (err == 0) { 405edf345e6SMatthew Ahrens err = dsl_prop_register(ds, 406edf345e6SMatthew Ahrens zfs_prop_to_name( 407edf345e6SMatthew Ahrens ZFS_PROP_REDUNDANT_METADATA), 408edf345e6SMatthew Ahrens redundant_metadata_changed_cb, os); 409edf345e6SMatthew Ahrens } 410b5152584SMatthew Ahrens if (err == 0) { 411b5152584SMatthew Ahrens err = dsl_prop_register(ds, 412b5152584SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_RECORDSIZE), 413b5152584SMatthew Ahrens recordsize_changed_cb, os); 414b5152584SMatthew Ahrens } 4153baa08fcSek } 4163b2aab18SMatthew Ahrens if (err != 0) { 417503ad85cSMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, 4183b2aab18SMatthew Ahrens &os->os_phys_buf)); 419503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 420ea8dc4b6Seschrock return (err); 421ea8dc4b6Seschrock } 4225d7b4d43SMatthew Ahrens } else { 423fa9e4066Sahrens /* It's the meta-objset. */ 424503ad85cSMatthew Ahrens os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 425db1741f5SJustin T. Gibbs os->os_compress = ZIO_COMPRESS_ON; 426503ad85cSMatthew Ahrens os->os_copies = spa_max_replication(spa); 427b24ab676SJeff Bonwick os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 428edf345e6SMatthew Ahrens os->os_dedup_verify = B_FALSE; 429edf345e6SMatthew Ahrens os->os_logbias = ZFS_LOGBIAS_LATENCY; 430edf345e6SMatthew Ahrens os->os_sync = ZFS_SYNC_STANDARD; 431503ad85cSMatthew Ahrens os->os_primary_cache = ZFS_CACHE_ALL; 432503ad85cSMatthew Ahrens os->os_secondary_cache = ZFS_CACHE_ALL; 433fa9e4066Sahrens } 434fa9e4066Sahrens 435bc9014e6SJustin Gibbs if (ds == NULL || !ds->ds_is_snapshot) 4366e0cbcaaSMatthew Ahrens os->os_zil_header = os->os_phys->os_zil_header; 437503ad85cSMatthew Ahrens os->os_zil = zil_alloc(os, &os->os_zil_header); 438fa9e4066Sahrens 439fa9e4066Sahrens for (i = 0; i < TXG_SIZE; i++) { 440503ad85cSMatthew Ahrens list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 441fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 442503ad85cSMatthew Ahrens list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 443fa9e4066Sahrens offsetof(dnode_t, dn_dirty_link[i])); 444fa9e4066Sahrens } 445503ad85cSMatthew Ahrens list_create(&os->os_dnodes, sizeof (dnode_t), 446fa9e4066Sahrens offsetof(dnode_t, dn_link)); 447503ad85cSMatthew Ahrens list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 448fa9e4066Sahrens offsetof(dmu_buf_impl_t, db_link)); 449fa9e4066Sahrens 450503ad85cSMatthew Ahrens mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 451503ad85cSMatthew Ahrens mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 452503ad85cSMatthew Ahrens mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 453503ad85cSMatthew Ahrens 454bc9014e6SJustin Gibbs dnode_special_open(os, &os->os_phys->os_meta_dnode, 455bc9014e6SJustin Gibbs DMU_META_DNODE_OBJECT, &os->os_meta_dnode); 456503ad85cSMatthew Ahrens if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 457bc9014e6SJustin Gibbs dnode_special_open(os, &os->os_phys->os_userused_dnode, 458bc9014e6SJustin Gibbs DMU_USERUSED_OBJECT, &os->os_userused_dnode); 459bc9014e6SJustin Gibbs dnode_special_open(os, &os->os_phys->os_groupused_dnode, 460bc9014e6SJustin Gibbs DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode); 46114843421SMatthew Ahrens } 462fa9e4066Sahrens 463503ad85cSMatthew Ahrens *osp = os; 464ea8dc4b6Seschrock return (0); 465fa9e4066Sahrens } 466fa9e4066Sahrens 467503ad85cSMatthew Ahrens int 468503ad85cSMatthew Ahrens dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 4693cb34c60Sahrens { 470503ad85cSMatthew Ahrens int err = 0; 4713cb34c60Sahrens 4723cb34c60Sahrens mutex_enter(&ds->ds_opening_lock); 4735d7b4d43SMatthew Ahrens if (ds->ds_objset == NULL) { 4745d7b4d43SMatthew Ahrens objset_t *os; 4753cb34c60Sahrens err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 4765d7b4d43SMatthew Ahrens ds, dsl_dataset_get_blkptr(ds), &os); 4775d7b4d43SMatthew Ahrens 4785d7b4d43SMatthew Ahrens if (err == 0) { 4795d7b4d43SMatthew Ahrens mutex_enter(&ds->ds_lock); 4805d7b4d43SMatthew Ahrens ASSERT(ds->ds_objset == NULL); 4815d7b4d43SMatthew Ahrens ds->ds_objset = os; 4825d7b4d43SMatthew Ahrens mutex_exit(&ds->ds_lock); 4835d7b4d43SMatthew Ahrens } 4843cb34c60Sahrens } 4855d7b4d43SMatthew Ahrens *osp = ds->ds_objset; 4863cb34c60Sahrens mutex_exit(&ds->ds_opening_lock); 487503ad85cSMatthew Ahrens return (err); 4883cb34c60Sahrens } 4893cb34c60Sahrens 4903b2aab18SMatthew Ahrens /* 4913b2aab18SMatthew Ahrens * Holds the pool while the objset is held. Therefore only one objset 4923b2aab18SMatthew Ahrens * can be held at a time. 4933b2aab18SMatthew Ahrens */ 4943cb34c60Sahrens int 495503ad85cSMatthew Ahrens dmu_objset_hold(const char *name, void *tag, objset_t **osp) 4963cb34c60Sahrens { 4973b2aab18SMatthew Ahrens dsl_pool_t *dp; 498503ad85cSMatthew Ahrens dsl_dataset_t *ds; 4993cb34c60Sahrens int err; 5003cb34c60Sahrens 5013b2aab18SMatthew Ahrens err = dsl_pool_hold(name, tag, &dp); 5023b2aab18SMatthew Ahrens if (err != 0) 5033b2aab18SMatthew Ahrens return (err); 5043b2aab18SMatthew Ahrens err = dsl_dataset_hold(dp, name, tag, &ds); 5053b2aab18SMatthew Ahrens if (err != 0) { 5063b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 507503ad85cSMatthew Ahrens return (err); 5083b2aab18SMatthew Ahrens } 509503ad85cSMatthew Ahrens 510503ad85cSMatthew Ahrens err = dmu_objset_from_ds(ds, osp); 5113b2aab18SMatthew Ahrens if (err != 0) { 512503ad85cSMatthew Ahrens dsl_dataset_rele(ds, tag); 5133b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 5143b2aab18SMatthew Ahrens } 515503ad85cSMatthew Ahrens 5163cb34c60Sahrens return (err); 5173cb34c60Sahrens } 5183cb34c60Sahrens 519*12380e1eSArne Jansen static int 520*12380e1eSArne Jansen dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type, 521*12380e1eSArne Jansen boolean_t readonly, void *tag, objset_t **osp) 522*12380e1eSArne Jansen { 523*12380e1eSArne Jansen int err; 524*12380e1eSArne Jansen 525*12380e1eSArne Jansen err = dmu_objset_from_ds(ds, osp); 526*12380e1eSArne Jansen if (err != 0) { 527*12380e1eSArne Jansen dsl_dataset_disown(ds, tag); 528*12380e1eSArne Jansen } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 529*12380e1eSArne Jansen dsl_dataset_disown(ds, tag); 530*12380e1eSArne Jansen return (SET_ERROR(EINVAL)); 531*12380e1eSArne Jansen } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 532*12380e1eSArne Jansen dsl_dataset_disown(ds, tag); 533*12380e1eSArne Jansen return (SET_ERROR(EROFS)); 534*12380e1eSArne Jansen } 535*12380e1eSArne Jansen return (err); 536*12380e1eSArne Jansen } 537*12380e1eSArne Jansen 5383b2aab18SMatthew Ahrens /* 5393b2aab18SMatthew Ahrens * dsl_pool must not be held when this is called. 5403b2aab18SMatthew Ahrens * Upon successful return, there will be a longhold on the dataset, 5413b2aab18SMatthew Ahrens * and the dsl_pool will not be held. 5423b2aab18SMatthew Ahrens */ 543fa9e4066Sahrens int 544503ad85cSMatthew Ahrens dmu_objset_own(const char *name, dmu_objset_type_t type, 545503ad85cSMatthew Ahrens boolean_t readonly, void *tag, objset_t **osp) 546fa9e4066Sahrens { 5473b2aab18SMatthew Ahrens dsl_pool_t *dp; 548f18faf3fSek dsl_dataset_t *ds; 549f18faf3fSek int err; 550fa9e4066Sahrens 5513b2aab18SMatthew Ahrens err = dsl_pool_hold(name, FTAG, &dp); 5523b2aab18SMatthew Ahrens if (err != 0) 5533b2aab18SMatthew Ahrens return (err); 5543b2aab18SMatthew Ahrens err = dsl_dataset_own(dp, name, tag, &ds); 5553b2aab18SMatthew Ahrens if (err != 0) { 5563b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 557fa9e4066Sahrens return (err); 5583b2aab18SMatthew Ahrens } 559*12380e1eSArne Jansen err = dmu_objset_own_impl(ds, type, readonly, tag, osp); 5603b2aab18SMatthew Ahrens dsl_pool_rele(dp, FTAG); 561*12380e1eSArne Jansen 5623cb34c60Sahrens return (err); 563fa9e4066Sahrens } 564fa9e4066Sahrens 565*12380e1eSArne Jansen int 566*12380e1eSArne Jansen dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type, 567*12380e1eSArne Jansen boolean_t readonly, void *tag, objset_t **osp) 568*12380e1eSArne Jansen { 569*12380e1eSArne Jansen dsl_dataset_t *ds; 570*12380e1eSArne Jansen int err; 571*12380e1eSArne Jansen 572*12380e1eSArne Jansen err = dsl_dataset_own_obj(dp, obj, tag, &ds); 573*12380e1eSArne Jansen if (err != 0) 574*12380e1eSArne Jansen return (err); 575*12380e1eSArne Jansen 576*12380e1eSArne Jansen return (dmu_objset_own_impl(ds, type, readonly, tag, osp)); 577*12380e1eSArne Jansen } 578*12380e1eSArne Jansen 579fa9e4066Sahrens void 580503ad85cSMatthew Ahrens dmu_objset_rele(objset_t *os, void *tag) 581fa9e4066Sahrens { 5823b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_objset_pool(os); 583503ad85cSMatthew Ahrens dsl_dataset_rele(os->os_dsl_dataset, tag); 5843b2aab18SMatthew Ahrens dsl_pool_rele(dp, tag); 585503ad85cSMatthew Ahrens } 586503ad85cSMatthew Ahrens 58791948b51SKeith M Wesolowski /* 58891948b51SKeith M Wesolowski * When we are called, os MUST refer to an objset associated with a dataset 58991948b51SKeith M Wesolowski * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner 59091948b51SKeith M Wesolowski * == tag. We will then release and reacquire ownership of the dataset while 59191948b51SKeith M Wesolowski * holding the pool config_rwlock to avoid intervening namespace or ownership 59291948b51SKeith M Wesolowski * changes may occur. 59391948b51SKeith M Wesolowski * 59491948b51SKeith M Wesolowski * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to 59591948b51SKeith M Wesolowski * release the hold on its dataset and acquire a new one on the dataset of the 59691948b51SKeith M Wesolowski * same name so that it can be partially torn down and reconstructed. 59791948b51SKeith M Wesolowski */ 59891948b51SKeith M Wesolowski void 59991948b51SKeith M Wesolowski dmu_objset_refresh_ownership(objset_t *os, void *tag) 60091948b51SKeith M Wesolowski { 60191948b51SKeith M Wesolowski dsl_pool_t *dp; 60291948b51SKeith M Wesolowski dsl_dataset_t *ds, *newds; 60391948b51SKeith M Wesolowski char name[MAXNAMELEN]; 60491948b51SKeith M Wesolowski 60591948b51SKeith M Wesolowski ds = os->os_dsl_dataset; 60691948b51SKeith M Wesolowski VERIFY3P(ds, !=, NULL); 60791948b51SKeith M Wesolowski VERIFY3P(ds->ds_owner, ==, tag); 60891948b51SKeith M Wesolowski VERIFY(dsl_dataset_long_held(ds)); 60991948b51SKeith M Wesolowski 61091948b51SKeith M Wesolowski dsl_dataset_name(ds, name); 61191948b51SKeith M Wesolowski dp = dmu_objset_pool(os); 61291948b51SKeith M Wesolowski dsl_pool_config_enter(dp, FTAG); 61391948b51SKeith M Wesolowski dmu_objset_disown(os, tag); 61491948b51SKeith M Wesolowski VERIFY0(dsl_dataset_own(dp, name, tag, &newds)); 61591948b51SKeith M Wesolowski VERIFY3P(newds, ==, os->os_dsl_dataset); 61691948b51SKeith M Wesolowski dsl_pool_config_exit(dp, FTAG); 61791948b51SKeith M Wesolowski } 61891948b51SKeith M Wesolowski 619503ad85cSMatthew Ahrens void 620503ad85cSMatthew Ahrens dmu_objset_disown(objset_t *os, void *tag) 621503ad85cSMatthew Ahrens { 622503ad85cSMatthew Ahrens dsl_dataset_disown(os->os_dsl_dataset, tag); 623fa9e4066Sahrens } 624fa9e4066Sahrens 6253b2aab18SMatthew Ahrens void 6261934e92fSmaybee dmu_objset_evict_dbufs(objset_t *os) 627ea8dc4b6Seschrock { 628bc9014e6SJustin Gibbs dnode_t dn_marker; 629ea8dc4b6Seschrock dnode_t *dn; 630c543ec06Sahrens 631503ad85cSMatthew Ahrens mutex_enter(&os->os_lock); 632bc9014e6SJustin Gibbs dn = list_head(&os->os_dnodes); 633bc9014e6SJustin Gibbs while (dn != NULL) { 634bc9014e6SJustin Gibbs /* 635bc9014e6SJustin Gibbs * Skip dnodes without holds. We have to do this dance 636bc9014e6SJustin Gibbs * because dnode_add_ref() only works if there is already a 637bc9014e6SJustin Gibbs * hold. If the dnode has no holds, then it has no dbufs. 638bc9014e6SJustin Gibbs */ 639bc9014e6SJustin Gibbs if (dnode_add_ref(dn, FTAG)) { 640bc9014e6SJustin Gibbs list_insert_after(&os->os_dnodes, dn, &dn_marker); 641bc9014e6SJustin Gibbs mutex_exit(&os->os_lock); 642c543ec06Sahrens 643bc9014e6SJustin Gibbs dnode_evict_dbufs(dn); 644bc9014e6SJustin Gibbs dnode_rele(dn, FTAG); 645c543ec06Sahrens 646bc9014e6SJustin Gibbs mutex_enter(&os->os_lock); 647bc9014e6SJustin Gibbs dn = list_next(&os->os_dnodes, &dn_marker); 648bc9014e6SJustin Gibbs list_remove(&os->os_dnodes, &dn_marker); 649bc9014e6SJustin Gibbs } else { 650bc9014e6SJustin Gibbs dn = list_next(&os->os_dnodes, dn); 651bc9014e6SJustin Gibbs } 652ea8dc4b6Seschrock } 653503ad85cSMatthew Ahrens mutex_exit(&os->os_lock); 654bc9014e6SJustin Gibbs 655bc9014e6SJustin Gibbs if (DMU_USERUSED_DNODE(os) != NULL) { 656bc9014e6SJustin Gibbs dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os)); 657bc9014e6SJustin Gibbs dnode_evict_dbufs(DMU_USERUSED_DNODE(os)); 658bc9014e6SJustin Gibbs } 659bc9014e6SJustin Gibbs dnode_evict_dbufs(DMU_META_DNODE(os)); 660ea8dc4b6Seschrock } 661ea8dc4b6Seschrock 662bc9014e6SJustin Gibbs /* 663bc9014e6SJustin Gibbs * Objset eviction processing is split into into two pieces. 664bc9014e6SJustin Gibbs * The first marks the objset as evicting, evicts any dbufs that 665bc9014e6SJustin Gibbs * have a refcount of zero, and then queues up the objset for the 666bc9014e6SJustin Gibbs * second phase of eviction. Once os->os_dnodes has been cleared by 667bc9014e6SJustin Gibbs * dnode_buf_pageout()->dnode_destroy(), the second phase is executed. 668bc9014e6SJustin Gibbs * The second phase closes the special dnodes, dequeues the objset from 669bc9014e6SJustin Gibbs * the list of those undergoing eviction, and finally frees the objset. 670bc9014e6SJustin Gibbs * 671bc9014e6SJustin Gibbs * NOTE: Due to asynchronous eviction processing (invocation of 672bc9014e6SJustin Gibbs * dnode_buf_pageout()), it is possible for the meta dnode for the 673bc9014e6SJustin Gibbs * objset to have no holds even though os->os_dnodes is not empty. 674bc9014e6SJustin Gibbs */ 675fa9e4066Sahrens void 676503ad85cSMatthew Ahrens dmu_objset_evict(objset_t *os) 677fa9e4066Sahrens { 678503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 679fa9e4066Sahrens 680b24ab676SJeff Bonwick for (int t = 0; t < TXG_SIZE; t++) 681b24ab676SJeff Bonwick ASSERT(!dmu_objset_is_dirty(os, t)); 682fa9e4066Sahrens 6833baa08fcSek if (ds) { 684bc9014e6SJustin Gibbs if (!ds->ds_is_snapshot) { 6853b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6863b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_CHECKSUM), 687503ad85cSMatthew Ahrens checksum_changed_cb, os)); 6883b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6893b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COMPRESSION), 690503ad85cSMatthew Ahrens compression_changed_cb, os)); 6913b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6923b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_COPIES), 693503ad85cSMatthew Ahrens copies_changed_cb, os)); 6943b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6953b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_DEDUP), 696b24ab676SJeff Bonwick dedup_changed_cb, os)); 6973b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 6983b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_LOGBIAS), 699e09fa4daSNeil Perrin logbias_changed_cb, os)); 7003b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 7013b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SYNC), 70255da60b9SMark J Musante sync_changed_cb, os)); 703edf345e6SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 704edf345e6SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_REDUNDANT_METADATA), 705edf345e6SMatthew Ahrens redundant_metadata_changed_cb, os)); 706b5152584SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 707b5152584SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_RECORDSIZE), 708b5152584SMatthew Ahrens recordsize_changed_cb, os)); 7093baa08fcSek } 7103b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 7113b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), 712503ad85cSMatthew Ahrens primary_cache_changed_cb, os)); 7133b2aab18SMatthew Ahrens VERIFY0(dsl_prop_unregister(ds, 7143b2aab18SMatthew Ahrens zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), 715503ad85cSMatthew Ahrens secondary_cache_changed_cb, os)); 716fa9e4066Sahrens } 717fa9e4066Sahrens 7180a586ceaSMark Shellenbaum if (os->os_sa) 7190a586ceaSMark Shellenbaum sa_tear_down(os); 7200a586ceaSMark Shellenbaum 721bc9014e6SJustin Gibbs os->os_evicting = B_TRUE; 7223b2aab18SMatthew Ahrens dmu_objset_evict_dbufs(os); 723ea8dc4b6Seschrock 724bc9014e6SJustin Gibbs mutex_enter(&os->os_lock); 725bc9014e6SJustin Gibbs spa_evicting_os_register(os->os_spa, os); 726bc9014e6SJustin Gibbs if (list_is_empty(&os->os_dnodes)) { 727bc9014e6SJustin Gibbs mutex_exit(&os->os_lock); 728bc9014e6SJustin Gibbs dmu_objset_evict_done(os); 729bc9014e6SJustin Gibbs } else { 730bc9014e6SJustin Gibbs mutex_exit(&os->os_lock); 731bc9014e6SJustin Gibbs } 732bc9014e6SJustin Gibbs } 733bc9014e6SJustin Gibbs 734bc9014e6SJustin Gibbs void 735bc9014e6SJustin Gibbs dmu_objset_evict_done(objset_t *os) 736bc9014e6SJustin Gibbs { 737bc9014e6SJustin Gibbs ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 738bc9014e6SJustin Gibbs 739744947dcSTom Erickson dnode_special_close(&os->os_meta_dnode); 740744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)) { 741744947dcSTom Erickson dnode_special_close(&os->os_userused_dnode); 742744947dcSTom Erickson dnode_special_close(&os->os_groupused_dnode); 74314843421SMatthew Ahrens } 744503ad85cSMatthew Ahrens zil_free(os->os_zil); 745fa9e4066Sahrens 7463b2aab18SMatthew Ahrens VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf)); 747744947dcSTom Erickson 748744947dcSTom Erickson /* 749744947dcSTom Erickson * This is a barrier to prevent the objset from going away in 750744947dcSTom Erickson * dnode_move() until we can safely ensure that the objset is still in 751744947dcSTom Erickson * use. We consider the objset valid before the barrier and invalid 752744947dcSTom Erickson * after the barrier. 753744947dcSTom Erickson */ 754744947dcSTom Erickson rw_enter(&os_lock, RW_READER); 755744947dcSTom Erickson rw_exit(&os_lock); 756744947dcSTom Erickson 757503ad85cSMatthew Ahrens mutex_destroy(&os->os_lock); 758503ad85cSMatthew Ahrens mutex_destroy(&os->os_obj_lock); 759503ad85cSMatthew Ahrens mutex_destroy(&os->os_user_ptr_lock); 760bc9014e6SJustin Gibbs spa_evicting_os_deregister(os->os_spa, os); 761503ad85cSMatthew Ahrens kmem_free(os, sizeof (objset_t)); 762fa9e4066Sahrens } 763fa9e4066Sahrens 76471eb0538SChris Kirby timestruc_t 76571eb0538SChris Kirby dmu_objset_snap_cmtime(objset_t *os) 76671eb0538SChris Kirby { 76771eb0538SChris Kirby return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 76871eb0538SChris Kirby } 76971eb0538SChris Kirby 770fa9e4066Sahrens /* called from dsl for meta-objset */ 771503ad85cSMatthew Ahrens objset_t * 772c717a561Smaybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 773c717a561Smaybee dmu_objset_type_t type, dmu_tx_t *tx) 774fa9e4066Sahrens { 775503ad85cSMatthew Ahrens objset_t *os; 776fa9e4066Sahrens dnode_t *mdn; 777fa9e4066Sahrens 778fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 7793b2aab18SMatthew Ahrens 780feaa74e4SMark Maybee if (ds != NULL) 7813b2aab18SMatthew Ahrens VERIFY0(dmu_objset_from_ds(ds, &os)); 782feaa74e4SMark Maybee else 7833b2aab18SMatthew Ahrens VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os)); 784feaa74e4SMark Maybee 785744947dcSTom Erickson mdn = DMU_META_DNODE(os); 786fa9e4066Sahrens 787fa9e4066Sahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 788fa9e4066Sahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 789fa9e4066Sahrens 790fa9e4066Sahrens /* 791fa9e4066Sahrens * We don't want to have to increase the meta-dnode's nlevels 792fa9e4066Sahrens * later, because then we could do it in quescing context while 793fa9e4066Sahrens * we are also accessing it in open context. 794fa9e4066Sahrens * 795fa9e4066Sahrens * This precaution is not necessary for the MOS (ds == NULL), 796fa9e4066Sahrens * because the MOS is only updated in syncing context. 797fa9e4066Sahrens * This is most fortunate: the MOS is the only objset that 798fa9e4066Sahrens * needs to be synced multiple times as spa_sync() iterates 799fa9e4066Sahrens * to convergence, so minimizing its dn_nlevels matters. 800fa9e4066Sahrens */ 801ea8dc4b6Seschrock if (ds != NULL) { 802ea8dc4b6Seschrock int levels = 1; 803ea8dc4b6Seschrock 804ea8dc4b6Seschrock /* 805ea8dc4b6Seschrock * Determine the number of levels necessary for the meta-dnode 806ea8dc4b6Seschrock * to contain DN_MAX_OBJECT dnodes. 807ea8dc4b6Seschrock */ 808ea8dc4b6Seschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 809ea8dc4b6Seschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 810ea8dc4b6Seschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 811ea8dc4b6Seschrock levels++; 812ea8dc4b6Seschrock 813fa9e4066Sahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 814ea8dc4b6Seschrock mdn->dn_nlevels = levels; 815ea8dc4b6Seschrock } 816fa9e4066Sahrens 817fa9e4066Sahrens ASSERT(type != DMU_OST_NONE); 818fa9e4066Sahrens ASSERT(type != DMU_OST_ANY); 819fa9e4066Sahrens ASSERT(type < DMU_OST_NUMTYPES); 820503ad85cSMatthew Ahrens os->os_phys->os_type = type; 821503ad85cSMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 822503ad85cSMatthew Ahrens os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 823503ad85cSMatthew Ahrens os->os_flags = os->os_phys->os_flags; 82414843421SMatthew Ahrens } 825fa9e4066Sahrens 826fa9e4066Sahrens dsl_dataset_dirty(ds, tx); 827fa9e4066Sahrens 828503ad85cSMatthew Ahrens return (os); 829fa9e4066Sahrens } 830fa9e4066Sahrens 8313b2aab18SMatthew Ahrens typedef struct dmu_objset_create_arg { 8323b2aab18SMatthew Ahrens const char *doca_name; 8333b2aab18SMatthew Ahrens cred_t *doca_cred; 8343b2aab18SMatthew Ahrens void (*doca_userfunc)(objset_t *os, void *arg, 8353b2aab18SMatthew Ahrens cred_t *cr, dmu_tx_t *tx); 8363b2aab18SMatthew Ahrens void *doca_userarg; 8373b2aab18SMatthew Ahrens dmu_objset_type_t doca_type; 8383b2aab18SMatthew Ahrens uint64_t doca_flags; 8393b2aab18SMatthew Ahrens } dmu_objset_create_arg_t; 840fa9e4066Sahrens 841ecd6cf80Smarks /*ARGSUSED*/ 842fa9e4066Sahrens static int 8433b2aab18SMatthew Ahrens dmu_objset_create_check(void *arg, dmu_tx_t *tx) 844fa9e4066Sahrens { 8453b2aab18SMatthew Ahrens dmu_objset_create_arg_t *doca = arg; 8463b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 8473b2aab18SMatthew Ahrens dsl_dir_t *pdd; 8483b2aab18SMatthew Ahrens const char *tail; 8493b2aab18SMatthew Ahrens int error; 8501d452cf5Sahrens 8513b2aab18SMatthew Ahrens if (strchr(doca->doca_name, '@') != NULL) 852be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 8531d452cf5Sahrens 8543b2aab18SMatthew Ahrens error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail); 8553b2aab18SMatthew Ahrens if (error != 0) 8563b2aab18SMatthew Ahrens return (error); 8573b2aab18SMatthew Ahrens if (tail == NULL) { 8583b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 859be6fd75aSMatthew Ahrens return (SET_ERROR(EEXIST)); 8601d452cf5Sahrens } 861a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 862a2afb611SJerry Jelinek doca->doca_cred); 8633b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 864ecd6cf80Smarks 865a2afb611SJerry Jelinek return (error); 8661d452cf5Sahrens } 8671d452cf5Sahrens 8681d452cf5Sahrens static void 8693b2aab18SMatthew Ahrens dmu_objset_create_sync(void *arg, dmu_tx_t *tx) 8701d452cf5Sahrens { 8713b2aab18SMatthew Ahrens dmu_objset_create_arg_t *doca = arg; 8723b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 8733b2aab18SMatthew Ahrens dsl_dir_t *pdd; 8743b2aab18SMatthew Ahrens const char *tail; 8754445fffbSMatthew Ahrens dsl_dataset_t *ds; 8763b2aab18SMatthew Ahrens uint64_t obj; 8774445fffbSMatthew Ahrens blkptr_t *bp; 8783b2aab18SMatthew Ahrens objset_t *os; 879fa9e4066Sahrens 8803b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail)); 881fa9e4066Sahrens 8823b2aab18SMatthew Ahrens obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags, 8833b2aab18SMatthew Ahrens doca->doca_cred, tx); 884fa9e4066Sahrens 8853b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 8864445fffbSMatthew Ahrens bp = dsl_dataset_get_blkptr(ds); 8873b2aab18SMatthew Ahrens os = dmu_objset_create_impl(pdd->dd_pool->dp_spa, 8883b2aab18SMatthew Ahrens ds, bp, doca->doca_type, tx); 889fa9e4066Sahrens 8903b2aab18SMatthew Ahrens if (doca->doca_userfunc != NULL) { 8913b2aab18SMatthew Ahrens doca->doca_userfunc(os, doca->doca_userarg, 8923b2aab18SMatthew Ahrens doca->doca_cred, tx); 893fa9e4066Sahrens } 894ecd6cf80Smarks 8953b2aab18SMatthew Ahrens spa_history_log_internal_ds(ds, "create", tx, ""); 8964445fffbSMatthew Ahrens dsl_dataset_rele(ds, FTAG); 8973b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 898fa9e4066Sahrens } 899fa9e4066Sahrens 900fa9e4066Sahrens int 901ae46e4c7SMatthew Ahrens dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 902ecd6cf80Smarks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 903fa9e4066Sahrens { 9043b2aab18SMatthew Ahrens dmu_objset_create_arg_t doca; 905fa9e4066Sahrens 9063b2aab18SMatthew Ahrens doca.doca_name = name; 9073b2aab18SMatthew Ahrens doca.doca_cred = CRED(); 9083b2aab18SMatthew Ahrens doca.doca_flags = flags; 9093b2aab18SMatthew Ahrens doca.doca_userfunc = func; 9103b2aab18SMatthew Ahrens doca.doca_userarg = arg; 9113b2aab18SMatthew Ahrens doca.doca_type = type; 912ecd6cf80Smarks 9133b2aab18SMatthew Ahrens return (dsl_sync_task(name, 9147d46dc6cSMatthew Ahrens dmu_objset_create_check, dmu_objset_create_sync, &doca, 9157d46dc6cSMatthew Ahrens 5, ZFS_SPACE_CHECK_NORMAL)); 916ae46e4c7SMatthew Ahrens } 917ae46e4c7SMatthew Ahrens 9183b2aab18SMatthew Ahrens typedef struct dmu_objset_clone_arg { 9193b2aab18SMatthew Ahrens const char *doca_clone; 9203b2aab18SMatthew Ahrens const char *doca_origin; 9213b2aab18SMatthew Ahrens cred_t *doca_cred; 9223b2aab18SMatthew Ahrens } dmu_objset_clone_arg_t; 9233b2aab18SMatthew Ahrens 9243b2aab18SMatthew Ahrens /*ARGSUSED*/ 9253b2aab18SMatthew Ahrens static int 9263b2aab18SMatthew Ahrens dmu_objset_clone_check(void *arg, dmu_tx_t *tx) 927ae46e4c7SMatthew Ahrens { 9283b2aab18SMatthew Ahrens dmu_objset_clone_arg_t *doca = arg; 929ae46e4c7SMatthew Ahrens dsl_dir_t *pdd; 930ae46e4c7SMatthew Ahrens const char *tail; 9313b2aab18SMatthew Ahrens int error; 9323b2aab18SMatthew Ahrens dsl_dataset_t *origin; 9333b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 934ae46e4c7SMatthew Ahrens 9353b2aab18SMatthew Ahrens if (strchr(doca->doca_clone, '@') != NULL) 936be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 9373b2aab18SMatthew Ahrens 9383b2aab18SMatthew Ahrens error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail); 9393b2aab18SMatthew Ahrens if (error != 0) 9403b2aab18SMatthew Ahrens return (error); 941ae46e4c7SMatthew Ahrens if (tail == NULL) { 9423b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 943be6fd75aSMatthew Ahrens return (SET_ERROR(EEXIST)); 944fa9e4066Sahrens } 94503b1c297SAlexander Eremin 946a2afb611SJerry Jelinek error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 947a2afb611SJerry Jelinek doca->doca_cred); 948a2afb611SJerry Jelinek if (error != 0) { 949a2afb611SJerry Jelinek dsl_dir_rele(pdd, FTAG); 950a2afb611SJerry Jelinek return (SET_ERROR(EDQUOT)); 951a2afb611SJerry Jelinek } 9523b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 953fa9e4066Sahrens 9543b2aab18SMatthew Ahrens error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin); 9553b2aab18SMatthew Ahrens if (error != 0) 95699d5e173STim Haley return (error); 95799d5e173STim Haley 9583b2aab18SMatthew Ahrens /* You can only clone snapshots, not the head datasets. */ 959bc9014e6SJustin Gibbs if (!origin->ds_is_snapshot) { 9603b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 961be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 96292241e0bSTom Erickson } 9633b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 96499d5e173STim Haley 9653b2aab18SMatthew Ahrens return (0); 966ea2f5b9eSMatthew Ahrens } 9671d452cf5Sahrens 9683b2aab18SMatthew Ahrens static void 9693b2aab18SMatthew Ahrens dmu_objset_clone_sync(void *arg, dmu_tx_t *tx) 9701d452cf5Sahrens { 9713b2aab18SMatthew Ahrens dmu_objset_clone_arg_t *doca = arg; 9723b2aab18SMatthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx); 9733b2aab18SMatthew Ahrens dsl_dir_t *pdd; 9743b2aab18SMatthew Ahrens const char *tail; 9753b2aab18SMatthew Ahrens dsl_dataset_t *origin, *ds; 9763b2aab18SMatthew Ahrens uint64_t obj; 9773b2aab18SMatthew Ahrens char namebuf[MAXNAMELEN]; 9784445fffbSMatthew Ahrens 9793b2aab18SMatthew Ahrens VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail)); 9803b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin)); 9814445fffbSMatthew Ahrens 9823b2aab18SMatthew Ahrens obj = dsl_dataset_create_sync(pdd, tail, origin, 0, 9833b2aab18SMatthew Ahrens doca->doca_cred, tx); 984f2e10be3Srm 9853b2aab18SMatthew Ahrens VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 9863b2aab18SMatthew Ahrens dsl_dataset_name(origin, namebuf); 9873b2aab18SMatthew Ahrens spa_history_log_internal_ds(ds, "clone", tx, 9883b2aab18SMatthew Ahrens "origin=%s (%llu)", namebuf, origin->ds_object); 9893b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 9903b2aab18SMatthew Ahrens dsl_dataset_rele(origin, FTAG); 9913b2aab18SMatthew Ahrens dsl_dir_rele(pdd, FTAG); 9921d452cf5Sahrens } 9931d452cf5Sahrens 9941d452cf5Sahrens int 9953b2aab18SMatthew Ahrens dmu_objset_clone(const char *clone, const char *origin) 9961d452cf5Sahrens { 9973b2aab18SMatthew Ahrens dmu_objset_clone_arg_t doca; 9984445fffbSMatthew Ahrens 9993b2aab18SMatthew Ahrens doca.doca_clone = clone; 10003b2aab18SMatthew Ahrens doca.doca_origin = origin; 10013b2aab18SMatthew Ahrens doca.doca_cred = CRED(); 100299d5e173STim Haley 10033b2aab18SMatthew Ahrens return (dsl_sync_task(clone, 10047d46dc6cSMatthew Ahrens dmu_objset_clone_check, dmu_objset_clone_sync, &doca, 10057d46dc6cSMatthew Ahrens 5, ZFS_SPACE_CHECK_NORMAL)); 10064445fffbSMatthew Ahrens } 10074445fffbSMatthew Ahrens 10084445fffbSMatthew Ahrens int 10094445fffbSMatthew Ahrens dmu_objset_snapshot_one(const char *fsname, const char *snapname) 10104445fffbSMatthew Ahrens { 10114445fffbSMatthew Ahrens int err; 10124445fffbSMatthew Ahrens char *longsnap = kmem_asprintf("%s@%s", fsname, snapname); 10134445fffbSMatthew Ahrens nvlist_t *snaps = fnvlist_alloc(); 10144445fffbSMatthew Ahrens 10154445fffbSMatthew Ahrens fnvlist_add_boolean(snaps, longsnap); 10164445fffbSMatthew Ahrens strfree(longsnap); 10173b2aab18SMatthew Ahrens err = dsl_dataset_snapshot(snaps, NULL, NULL); 10183b2aab18SMatthew Ahrens fnvlist_free(snaps); 10194445fffbSMatthew Ahrens return (err); 10204445fffbSMatthew Ahrens } 10214445fffbSMatthew Ahrens 1022fa9e4066Sahrens static void 102314843421SMatthew Ahrens dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 1024fa9e4066Sahrens { 1025c717a561Smaybee dnode_t *dn; 1026faafa6e3Sahrens 1027c717a561Smaybee while (dn = list_head(list)) { 1028c717a561Smaybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 1029c717a561Smaybee ASSERT(dn->dn_dbuf->db_data_pending); 1030c717a561Smaybee /* 103114843421SMatthew Ahrens * Initialize dn_zio outside dnode_sync() because the 103214843421SMatthew Ahrens * meta-dnode needs to set it ouside dnode_sync(). 1033c717a561Smaybee */ 1034c717a561Smaybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 1035c717a561Smaybee ASSERT(dn->dn_zio); 1036faafa6e3Sahrens 1037c717a561Smaybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 1038c717a561Smaybee list_remove(list, dn); 103914843421SMatthew Ahrens 104014843421SMatthew Ahrens if (newlist) { 104114843421SMatthew Ahrens (void) dnode_add_ref(dn, newlist); 104214843421SMatthew Ahrens list_insert_tail(newlist, dn); 104314843421SMatthew Ahrens } 104414843421SMatthew Ahrens 1045c717a561Smaybee dnode_sync(dn, tx); 1046fa9e4066Sahrens } 1047fa9e4066Sahrens } 1048fa9e4066Sahrens 1049fa9e4066Sahrens /* ARGSUSED */ 1050fa9e4066Sahrens static void 1051b24ab676SJeff Bonwick dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 1052fa9e4066Sahrens { 1053e14bb325SJeff Bonwick blkptr_t *bp = zio->io_bp; 1054503ad85cSMatthew Ahrens objset_t *os = arg; 1055c717a561Smaybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 1056fa9e4066Sahrens 10575d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); 10583b2aab18SMatthew Ahrens ASSERT3P(bp, ==, os->os_rootbp); 10593b2aab18SMatthew Ahrens ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 10603b2aab18SMatthew Ahrens ASSERT0(BP_GET_LEVEL(bp)); 10610a4e9518Sgw 1062fa9e4066Sahrens /* 106314843421SMatthew Ahrens * Update rootbp fill count: it should be the number of objects 106414843421SMatthew Ahrens * allocated in the object set (not counting the "special" 106514843421SMatthew Ahrens * objects that are stored in the objset_phys_t -- the meta 106614843421SMatthew Ahrens * dnode and user/group accounting objects). 1067fa9e4066Sahrens */ 106814843421SMatthew Ahrens bp->blk_fill = 0; 1069e14bb325SJeff Bonwick for (int i = 0; i < dnp->dn_nblkptr; i++) 10705d7b4d43SMatthew Ahrens bp->blk_fill += BP_GET_FILL(&dnp->dn_blkptr[i]); 1071b24ab676SJeff Bonwick } 1072b24ab676SJeff Bonwick 1073b24ab676SJeff Bonwick /* ARGSUSED */ 1074b24ab676SJeff Bonwick static void 1075b24ab676SJeff Bonwick dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 1076b24ab676SJeff Bonwick { 1077b24ab676SJeff Bonwick blkptr_t *bp = zio->io_bp; 1078b24ab676SJeff Bonwick blkptr_t *bp_orig = &zio->io_bp_orig; 1079b24ab676SJeff Bonwick objset_t *os = arg; 10800a4e9518Sgw 1081e14bb325SJeff Bonwick if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 1082b24ab676SJeff Bonwick ASSERT(BP_EQUAL(bp, bp_orig)); 1083e14bb325SJeff Bonwick } else { 1084b24ab676SJeff Bonwick dsl_dataset_t *ds = os->os_dsl_dataset; 1085b24ab676SJeff Bonwick dmu_tx_t *tx = os->os_synctx; 1086b24ab676SJeff Bonwick 1087b24ab676SJeff Bonwick (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 1088b24ab676SJeff Bonwick dsl_dataset_block_born(ds, bp, tx); 10890a4e9518Sgw } 1090c717a561Smaybee } 1091c717a561Smaybee 1092fa9e4066Sahrens /* called from dsl */ 1093fa9e4066Sahrens void 1094503ad85cSMatthew Ahrens dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 1095fa9e4066Sahrens { 1096fa9e4066Sahrens int txgoff; 10977802d7bfSMatthew Ahrens zbookmark_phys_t zb; 1098b24ab676SJeff Bonwick zio_prop_t zp; 1099c717a561Smaybee zio_t *zio; 1100c717a561Smaybee list_t *list; 110114843421SMatthew Ahrens list_t *newlist = NULL; 1102c717a561Smaybee dbuf_dirty_record_t *dr; 1103c717a561Smaybee 1104c717a561Smaybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 1105fa9e4066Sahrens 1106fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 1107fa9e4066Sahrens /* XXX the write_done callback should really give us the tx... */ 1108fa9e4066Sahrens os->os_synctx = tx; 1109fa9e4066Sahrens 111087bd5c1eSahrens if (os->os_dsl_dataset == NULL) { 111187bd5c1eSahrens /* 111287bd5c1eSahrens * This is the MOS. If we have upgraded, 111387bd5c1eSahrens * spa_max_replication() could change, so reset 111487bd5c1eSahrens * os_copies here. 111587bd5c1eSahrens */ 111687bd5c1eSahrens os->os_copies = spa_max_replication(os->os_spa); 111787bd5c1eSahrens } 111887bd5c1eSahrens 1119fa9e4066Sahrens /* 1120c717a561Smaybee * Create the root block IO 1121fa9e4066Sahrens */ 1122b24ab676SJeff Bonwick SET_BOOKMARK(&zb, os->os_dsl_dataset ? 1123b24ab676SJeff Bonwick os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 1124b24ab676SJeff Bonwick ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 11251b912ec7SGeorge Wilson arc_release(os->os_phys_buf, &os->os_phys_buf); 1126b24ab676SJeff Bonwick 1127b24ab676SJeff Bonwick dmu_write_policy(os, NULL, 0, 0, &zp); 1128b24ab676SJeff Bonwick 1129b24ab676SJeff Bonwick zio = arc_write(pio, os->os_spa, tx->tx_txg, 1130aad02571SSaso Kiselkov os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), 1131aad02571SSaso Kiselkov DMU_OS_IS_L2COMPRESSIBLE(os), &zp, dmu_objset_write_ready, 113269962b56SMatthew Ahrens NULL, dmu_objset_write_done, os, ZIO_PRIORITY_ASYNC_WRITE, 1133aad02571SSaso Kiselkov ZIO_FLAG_MUSTSUCCEED, &zb); 1134c717a561Smaybee 1135c717a561Smaybee /* 113614843421SMatthew Ahrens * Sync special dnodes - the parent IO for the sync is the root block 1137c717a561Smaybee */ 1138744947dcSTom Erickson DMU_META_DNODE(os)->dn_zio = zio; 1139744947dcSTom Erickson dnode_sync(DMU_META_DNODE(os), tx); 1140c717a561Smaybee 114114843421SMatthew Ahrens os->os_phys->os_flags = os->os_flags; 114214843421SMatthew Ahrens 1143744947dcSTom Erickson if (DMU_USERUSED_DNODE(os) && 1144744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) { 1145744947dcSTom Erickson DMU_USERUSED_DNODE(os)->dn_zio = zio; 1146744947dcSTom Erickson dnode_sync(DMU_USERUSED_DNODE(os), tx); 1147744947dcSTom Erickson DMU_GROUPUSED_DNODE(os)->dn_zio = zio; 1148744947dcSTom Erickson dnode_sync(DMU_GROUPUSED_DNODE(os), tx); 114914843421SMatthew Ahrens } 115014843421SMatthew Ahrens 1151c717a561Smaybee txgoff = tx->tx_txg & TXG_MASK; 1152fa9e4066Sahrens 115314843421SMatthew Ahrens if (dmu_objset_userused_enabled(os)) { 115414843421SMatthew Ahrens newlist = &os->os_synced_dnodes; 115514843421SMatthew Ahrens /* 115614843421SMatthew Ahrens * We must create the list here because it uses the 115714843421SMatthew Ahrens * dn_dirty_link[] of this txg. 115814843421SMatthew Ahrens */ 115914843421SMatthew Ahrens list_create(newlist, sizeof (dnode_t), 116014843421SMatthew Ahrens offsetof(dnode_t, dn_dirty_link[txgoff])); 116114843421SMatthew Ahrens } 116214843421SMatthew Ahrens 116314843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 116414843421SMatthew Ahrens dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1165fa9e4066Sahrens 1166744947dcSTom Erickson list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff]; 1167c717a561Smaybee while (dr = list_head(list)) { 11683b2aab18SMatthew Ahrens ASSERT0(dr->dr_dbuf->db_level); 1169c717a561Smaybee list_remove(list, dr); 1170c717a561Smaybee if (dr->dr_zio) 1171c717a561Smaybee zio_nowait(dr->dr_zio); 1172c717a561Smaybee } 1173c717a561Smaybee /* 1174c717a561Smaybee * Free intent log blocks up to this tx. 1175c717a561Smaybee */ 1176c717a561Smaybee zil_sync(os->os_zil, tx); 1177088f3894Sahrens os->os_phys->os_zil_header = os->os_zil_header; 1178c717a561Smaybee zio_nowait(zio); 1179fa9e4066Sahrens } 1180fa9e4066Sahrens 1181b24ab676SJeff Bonwick boolean_t 1182b24ab676SJeff Bonwick dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1183b24ab676SJeff Bonwick { 1184b24ab676SJeff Bonwick return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1185b24ab676SJeff Bonwick !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1186b24ab676SJeff Bonwick } 1187b24ab676SJeff Bonwick 1188744947dcSTom Erickson static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 118914843421SMatthew Ahrens 119014843421SMatthew Ahrens void 119114843421SMatthew Ahrens dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 119214843421SMatthew Ahrens { 119314843421SMatthew Ahrens used_cbs[ost] = cb; 119414843421SMatthew Ahrens } 119514843421SMatthew Ahrens 119614843421SMatthew Ahrens boolean_t 1197503ad85cSMatthew Ahrens dmu_objset_userused_enabled(objset_t *os) 119814843421SMatthew Ahrens { 119914843421SMatthew Ahrens return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 1200744947dcSTom Erickson used_cbs[os->os_phys->os_type] != NULL && 1201744947dcSTom Erickson DMU_USERUSED_DNODE(os) != NULL); 120214843421SMatthew Ahrens } 120314843421SMatthew Ahrens 12049966ca11SMatthew Ahrens static void 12050a586ceaSMark Shellenbaum do_userquota_update(objset_t *os, uint64_t used, uint64_t flags, 12060a586ceaSMark Shellenbaum uint64_t user, uint64_t group, boolean_t subtract, dmu_tx_t *tx) 12079966ca11SMatthew Ahrens { 12080a586ceaSMark Shellenbaum if ((flags & DNODE_FLAG_USERUSED_ACCOUNTED)) { 12090a586ceaSMark Shellenbaum int64_t delta = DNODE_SIZE + used; 12109966ca11SMatthew Ahrens if (subtract) 12119966ca11SMatthew Ahrens delta = -delta; 1212b420f3adSRichard Lowe VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 12139966ca11SMatthew Ahrens user, delta, tx)); 1214b420f3adSRichard Lowe VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 12159966ca11SMatthew Ahrens group, delta, tx)); 12169966ca11SMatthew Ahrens } 12179966ca11SMatthew Ahrens } 12189966ca11SMatthew Ahrens 121914843421SMatthew Ahrens void 12200a586ceaSMark Shellenbaum dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx) 122114843421SMatthew Ahrens { 122214843421SMatthew Ahrens dnode_t *dn; 122314843421SMatthew Ahrens list_t *list = &os->os_synced_dnodes; 122414843421SMatthew Ahrens 122514843421SMatthew Ahrens ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 122614843421SMatthew Ahrens 122714843421SMatthew Ahrens while (dn = list_head(list)) { 12281d8ccc7bSMark Shellenbaum int flags; 122914843421SMatthew Ahrens ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 123014843421SMatthew Ahrens ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 123114843421SMatthew Ahrens dn->dn_phys->dn_flags & 123214843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED); 123314843421SMatthew Ahrens 123414843421SMatthew Ahrens /* Allocate the user/groupused objects if necessary. */ 1235744947dcSTom Erickson if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) { 1236503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 123714843421SMatthew Ahrens DMU_USERUSED_OBJECT, 123814843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1239503ad85cSMatthew Ahrens VERIFY(0 == zap_create_claim(os, 124014843421SMatthew Ahrens DMU_GROUPUSED_OBJECT, 124114843421SMatthew Ahrens DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 124214843421SMatthew Ahrens } 124314843421SMatthew Ahrens 124414843421SMatthew Ahrens /* 12459966ca11SMatthew Ahrens * We intentionally modify the zap object even if the 12460a586ceaSMark Shellenbaum * net delta is zero. Otherwise 12479966ca11SMatthew Ahrens * the block of the zap obj could be shared between 12489966ca11SMatthew Ahrens * datasets but need to be different between them after 12499966ca11SMatthew Ahrens * a bprewrite. 125014843421SMatthew Ahrens */ 125114843421SMatthew Ahrens 12521d8ccc7bSMark Shellenbaum flags = dn->dn_id_flags; 12531d8ccc7bSMark Shellenbaum ASSERT(flags); 12541d8ccc7bSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 12550a586ceaSMark Shellenbaum do_userquota_update(os, dn->dn_oldused, dn->dn_oldflags, 12560a586ceaSMark Shellenbaum dn->dn_olduid, dn->dn_oldgid, B_TRUE, tx); 12570a586ceaSMark Shellenbaum } 12581d8ccc7bSMark Shellenbaum if (flags & DN_ID_NEW_EXIST) { 12590a586ceaSMark Shellenbaum do_userquota_update(os, DN_USED_BYTES(dn->dn_phys), 12600a586ceaSMark Shellenbaum dn->dn_phys->dn_flags, dn->dn_newuid, 12610a586ceaSMark Shellenbaum dn->dn_newgid, B_FALSE, tx); 12620a586ceaSMark Shellenbaum } 12630a586ceaSMark Shellenbaum 12641d8ccc7bSMark Shellenbaum mutex_enter(&dn->dn_mtx); 12650a586ceaSMark Shellenbaum dn->dn_oldused = 0; 12660a586ceaSMark Shellenbaum dn->dn_oldflags = 0; 12670a586ceaSMark Shellenbaum if (dn->dn_id_flags & DN_ID_NEW_EXIST) { 12680a586ceaSMark Shellenbaum dn->dn_olduid = dn->dn_newuid; 12690a586ceaSMark Shellenbaum dn->dn_oldgid = dn->dn_newgid; 12700a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 12710a586ceaSMark Shellenbaum if (dn->dn_bonuslen == 0) 12720a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 12730a586ceaSMark Shellenbaum else 12740a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 12750a586ceaSMark Shellenbaum } 127628d97a71SMark Shellenbaum dn->dn_id_flags &= ~(DN_ID_NEW_EXIST); 127714843421SMatthew Ahrens mutex_exit(&dn->dn_mtx); 127814843421SMatthew Ahrens 127914843421SMatthew Ahrens list_remove(list, dn); 128014843421SMatthew Ahrens dnode_rele(dn, list); 128114843421SMatthew Ahrens } 128214843421SMatthew Ahrens } 128314843421SMatthew Ahrens 128406e0070dSMark Shellenbaum /* 128506e0070dSMark Shellenbaum * Returns a pointer to data to find uid/gid from 128606e0070dSMark Shellenbaum * 128706e0070dSMark Shellenbaum * If a dirty record for transaction group that is syncing can't 128806e0070dSMark Shellenbaum * be found then NULL is returned. In the NULL case it is assumed 128906e0070dSMark Shellenbaum * the uid/gid aren't changing. 129006e0070dSMark Shellenbaum */ 129106e0070dSMark Shellenbaum static void * 129206e0070dSMark Shellenbaum dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx) 129306e0070dSMark Shellenbaum { 129406e0070dSMark Shellenbaum dbuf_dirty_record_t *dr, **drp; 129506e0070dSMark Shellenbaum void *data; 129606e0070dSMark Shellenbaum 129706e0070dSMark Shellenbaum if (db->db_dirtycnt == 0) 129806e0070dSMark Shellenbaum return (db->db.db_data); /* Nothing is changing */ 129906e0070dSMark Shellenbaum 130006e0070dSMark Shellenbaum for (drp = &db->db_last_dirty; (dr = *drp) != NULL; drp = &dr->dr_next) 130106e0070dSMark Shellenbaum if (dr->dr_txg == tx->tx_txg) 130206e0070dSMark Shellenbaum break; 130306e0070dSMark Shellenbaum 1304744947dcSTom Erickson if (dr == NULL) { 130506e0070dSMark Shellenbaum data = NULL; 1306744947dcSTom Erickson } else { 1307744947dcSTom Erickson dnode_t *dn; 1308744947dcSTom Erickson 1309744947dcSTom Erickson DB_DNODE_ENTER(dr->dr_dbuf); 1310744947dcSTom Erickson dn = DB_DNODE(dr->dr_dbuf); 1311744947dcSTom Erickson 1312744947dcSTom Erickson if (dn->dn_bonuslen == 0 && 1313744947dcSTom Erickson dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID) 1314744947dcSTom Erickson data = dr->dt.dl.dr_data->b_data; 1315744947dcSTom Erickson else 1316744947dcSTom Erickson data = dr->dt.dl.dr_data; 1317744947dcSTom Erickson 1318744947dcSTom Erickson DB_DNODE_EXIT(dr->dr_dbuf); 1319744947dcSTom Erickson } 1320744947dcSTom Erickson 132106e0070dSMark Shellenbaum return (data); 132206e0070dSMark Shellenbaum } 132306e0070dSMark Shellenbaum 13240a586ceaSMark Shellenbaum void 132506e0070dSMark Shellenbaum dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx) 13260a586ceaSMark Shellenbaum { 13270a586ceaSMark Shellenbaum objset_t *os = dn->dn_objset; 13280a586ceaSMark Shellenbaum void *data = NULL; 132906e0070dSMark Shellenbaum dmu_buf_impl_t *db = NULL; 1330d5285caeSGeorge Wilson uint64_t *user = NULL; 1331d5285caeSGeorge Wilson uint64_t *group = NULL; 13320a586ceaSMark Shellenbaum int flags = dn->dn_id_flags; 13330a586ceaSMark Shellenbaum int error; 133406e0070dSMark Shellenbaum boolean_t have_spill = B_FALSE; 13350a586ceaSMark Shellenbaum 13360a586ceaSMark Shellenbaum if (!dmu_objset_userused_enabled(dn->dn_objset)) 13370a586ceaSMark Shellenbaum return; 13380a586ceaSMark Shellenbaum 13390a586ceaSMark Shellenbaum if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST| 13400a586ceaSMark Shellenbaum DN_ID_CHKED_SPILL))) 13410a586ceaSMark Shellenbaum return; 13420a586ceaSMark Shellenbaum 13430a586ceaSMark Shellenbaum if (before && dn->dn_bonuslen != 0) 13440a586ceaSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 134506e0070dSMark Shellenbaum else if (!before && dn->dn_bonuslen != 0) { 134606e0070dSMark Shellenbaum if (dn->dn_bonus) { 134706e0070dSMark Shellenbaum db = dn->dn_bonus; 134806e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 134906e0070dSMark Shellenbaum data = dmu_objset_userquota_find_data(db, tx); 135006e0070dSMark Shellenbaum } else { 135106e0070dSMark Shellenbaum data = DN_BONUS(dn->dn_phys); 135206e0070dSMark Shellenbaum } 135306e0070dSMark Shellenbaum } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) { 13540a586ceaSMark Shellenbaum int rf = 0; 13550a586ceaSMark Shellenbaum 13560a586ceaSMark Shellenbaum if (RW_WRITE_HELD(&dn->dn_struct_rwlock)) 13570a586ceaSMark Shellenbaum rf |= DB_RF_HAVESTRUCT; 13581d8ccc7bSMark Shellenbaum error = dmu_spill_hold_by_dnode(dn, 13591d8ccc7bSMark Shellenbaum rf | DB_RF_MUST_SUCCEED, 136006e0070dSMark Shellenbaum FTAG, (dmu_buf_t **)&db); 13610a586ceaSMark Shellenbaum ASSERT(error == 0); 136206e0070dSMark Shellenbaum mutex_enter(&db->db_mtx); 136306e0070dSMark Shellenbaum data = (before) ? db->db.db_data : 136406e0070dSMark Shellenbaum dmu_objset_userquota_find_data(db, tx); 136506e0070dSMark Shellenbaum have_spill = B_TRUE; 13660a586ceaSMark Shellenbaum } else { 13670a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 13680a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 13690a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 13700a586ceaSMark Shellenbaum return; 13710a586ceaSMark Shellenbaum } 13720a586ceaSMark Shellenbaum 13730a586ceaSMark Shellenbaum if (before) { 137406e0070dSMark Shellenbaum ASSERT(data); 13750a586ceaSMark Shellenbaum user = &dn->dn_olduid; 13760a586ceaSMark Shellenbaum group = &dn->dn_oldgid; 137706e0070dSMark Shellenbaum } else if (data) { 13780a586ceaSMark Shellenbaum user = &dn->dn_newuid; 13790a586ceaSMark Shellenbaum group = &dn->dn_newgid; 13800a586ceaSMark Shellenbaum } 13810a586ceaSMark Shellenbaum 138206e0070dSMark Shellenbaum /* 138306e0070dSMark Shellenbaum * Must always call the callback in case the object 138406e0070dSMark Shellenbaum * type has changed and that type isn't an object type to track 138506e0070dSMark Shellenbaum */ 13860a586ceaSMark Shellenbaum error = used_cbs[os->os_phys->os_type](dn->dn_bonustype, data, 13870a586ceaSMark Shellenbaum user, group); 13880a586ceaSMark Shellenbaum 138906e0070dSMark Shellenbaum /* 139006e0070dSMark Shellenbaum * Preserve existing uid/gid when the callback can't determine 139106e0070dSMark Shellenbaum * what the new uid/gid are and the callback returned EEXIST. 139206e0070dSMark Shellenbaum * The EEXIST error tells us to just use the existing uid/gid. 139306e0070dSMark Shellenbaum * If we don't know what the old values are then just assign 139406e0070dSMark Shellenbaum * them to 0, since that is a new file being created. 139506e0070dSMark Shellenbaum */ 139606e0070dSMark Shellenbaum if (!before && data == NULL && error == EEXIST) { 139706e0070dSMark Shellenbaum if (flags & DN_ID_OLD_EXIST) { 139806e0070dSMark Shellenbaum dn->dn_newuid = dn->dn_olduid; 139906e0070dSMark Shellenbaum dn->dn_newgid = dn->dn_oldgid; 140006e0070dSMark Shellenbaum } else { 140106e0070dSMark Shellenbaum dn->dn_newuid = 0; 140206e0070dSMark Shellenbaum dn->dn_newgid = 0; 140306e0070dSMark Shellenbaum } 140406e0070dSMark Shellenbaum error = 0; 140506e0070dSMark Shellenbaum } 140606e0070dSMark Shellenbaum 140706e0070dSMark Shellenbaum if (db) 140806e0070dSMark Shellenbaum mutex_exit(&db->db_mtx); 140906e0070dSMark Shellenbaum 14100a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 14110a586ceaSMark Shellenbaum if (error == 0 && before) 14120a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_OLD_EXIST; 14130a586ceaSMark Shellenbaum if (error == 0 && !before) 14140a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_NEW_EXIST; 14150a586ceaSMark Shellenbaum 141606e0070dSMark Shellenbaum if (have_spill) { 14170a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_SPILL; 14180a586ceaSMark Shellenbaum } else { 14190a586ceaSMark Shellenbaum dn->dn_id_flags |= DN_ID_CHKED_BONUS; 14200a586ceaSMark Shellenbaum } 14210a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 142206e0070dSMark Shellenbaum if (have_spill) 142306e0070dSMark Shellenbaum dmu_buf_rele((dmu_buf_t *)db, FTAG); 14240a586ceaSMark Shellenbaum } 14250a586ceaSMark Shellenbaum 142614843421SMatthew Ahrens boolean_t 142714843421SMatthew Ahrens dmu_objset_userspace_present(objset_t *os) 142814843421SMatthew Ahrens { 1429503ad85cSMatthew Ahrens return (os->os_phys->os_flags & 143014843421SMatthew Ahrens OBJSET_FLAG_USERACCOUNTING_COMPLETE); 143114843421SMatthew Ahrens } 143214843421SMatthew Ahrens 143314843421SMatthew Ahrens int 143414843421SMatthew Ahrens dmu_objset_userspace_upgrade(objset_t *os) 143514843421SMatthew Ahrens { 143614843421SMatthew Ahrens uint64_t obj; 143714843421SMatthew Ahrens int err = 0; 143814843421SMatthew Ahrens 143914843421SMatthew Ahrens if (dmu_objset_userspace_present(os)) 144014843421SMatthew Ahrens return (0); 1441503ad85cSMatthew Ahrens if (!dmu_objset_userused_enabled(os)) 1442be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 144314843421SMatthew Ahrens if (dmu_objset_is_snapshot(os)) 1444be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 144514843421SMatthew Ahrens 144614843421SMatthew Ahrens /* 144714843421SMatthew Ahrens * We simply need to mark every object dirty, so that it will be 144814843421SMatthew Ahrens * synced out and now accounted. If this is called 144914843421SMatthew Ahrens * concurrently, or if we already did some work before crashing, 145014843421SMatthew Ahrens * that's fine, since we track each object's accounted state 145114843421SMatthew Ahrens * independently. 145214843421SMatthew Ahrens */ 145314843421SMatthew Ahrens 145414843421SMatthew Ahrens for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 145568857716SLin Ling dmu_tx_t *tx; 145614843421SMatthew Ahrens dmu_buf_t *db; 145714843421SMatthew Ahrens int objerr; 145814843421SMatthew Ahrens 145914843421SMatthew Ahrens if (issig(JUSTLOOKING) && issig(FORREAL)) 1460be6fd75aSMatthew Ahrens return (SET_ERROR(EINTR)); 146114843421SMatthew Ahrens 146214843421SMatthew Ahrens objerr = dmu_bonus_hold(os, obj, FTAG, &db); 14633b2aab18SMatthew Ahrens if (objerr != 0) 146414843421SMatthew Ahrens continue; 146568857716SLin Ling tx = dmu_tx_create(os); 146614843421SMatthew Ahrens dmu_tx_hold_bonus(tx, obj); 146714843421SMatthew Ahrens objerr = dmu_tx_assign(tx, TXG_WAIT); 14683b2aab18SMatthew Ahrens if (objerr != 0) { 146914843421SMatthew Ahrens dmu_tx_abort(tx); 147014843421SMatthew Ahrens continue; 147114843421SMatthew Ahrens } 147214843421SMatthew Ahrens dmu_buf_will_dirty(db, tx); 147314843421SMatthew Ahrens dmu_buf_rele(db, FTAG); 147414843421SMatthew Ahrens dmu_tx_commit(tx); 147514843421SMatthew Ahrens } 147614843421SMatthew Ahrens 1477503ad85cSMatthew Ahrens os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 147814843421SMatthew Ahrens txg_wait_synced(dmu_objset_pool(os), 0); 147914843421SMatthew Ahrens return (0); 148014843421SMatthew Ahrens } 148114843421SMatthew Ahrens 1482fa9e4066Sahrens void 1483a2eea2e1Sahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1484a2eea2e1Sahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1485fa9e4066Sahrens { 1486503ad85cSMatthew Ahrens dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1487a2eea2e1Sahrens usedobjsp, availobjsp); 1488a2eea2e1Sahrens } 1489a2eea2e1Sahrens 1490a2eea2e1Sahrens uint64_t 1491a2eea2e1Sahrens dmu_objset_fsid_guid(objset_t *os) 1492a2eea2e1Sahrens { 1493503ad85cSMatthew Ahrens return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1494a2eea2e1Sahrens } 1495a2eea2e1Sahrens 1496a2eea2e1Sahrens void 1497a2eea2e1Sahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1498a2eea2e1Sahrens { 1499503ad85cSMatthew Ahrens stat->dds_type = os->os_phys->os_type; 1500503ad85cSMatthew Ahrens if (os->os_dsl_dataset) 1501503ad85cSMatthew Ahrens dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1502a2eea2e1Sahrens } 1503a2eea2e1Sahrens 1504a2eea2e1Sahrens void 1505a2eea2e1Sahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1506a2eea2e1Sahrens { 1507503ad85cSMatthew Ahrens ASSERT(os->os_dsl_dataset || 1508503ad85cSMatthew Ahrens os->os_phys->os_type == DMU_OST_META); 1509a2eea2e1Sahrens 1510503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1511503ad85cSMatthew Ahrens dsl_dataset_stats(os->os_dsl_dataset, nv); 1512a2eea2e1Sahrens 1513a2eea2e1Sahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1514503ad85cSMatthew Ahrens os->os_phys->os_type); 151514843421SMatthew Ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 151614843421SMatthew Ahrens dmu_objset_userspace_present(os)); 1517fa9e4066Sahrens } 1518fa9e4066Sahrens 1519fa9e4066Sahrens int 1520fa9e4066Sahrens dmu_objset_is_snapshot(objset_t *os) 1521fa9e4066Sahrens { 1522503ad85cSMatthew Ahrens if (os->os_dsl_dataset != NULL) 1523bc9014e6SJustin Gibbs return (os->os_dsl_dataset->ds_is_snapshot); 1524fa9e4066Sahrens else 1525fa9e4066Sahrens return (B_FALSE); 1526fa9e4066Sahrens } 1527fa9e4066Sahrens 1528ab04eb8eStimh int 1529ab04eb8eStimh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1530ab04eb8eStimh boolean_t *conflict) 1531ab04eb8eStimh { 1532503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1533ab04eb8eStimh uint64_t ignored; 1534ab04eb8eStimh 1535c1379625SJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) 1536be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1537ab04eb8eStimh 1538ab04eb8eStimh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1539c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored, 1540c1379625SJustin T. Gibbs MT_FIRST, real, maxlen, conflict)); 1541ab04eb8eStimh } 1542ab04eb8eStimh 1543fa9e4066Sahrens int 1544fa9e4066Sahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1545b38f0970Sck uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1546fa9e4066Sahrens { 1547503ad85cSMatthew Ahrens dsl_dataset_t *ds = os->os_dsl_dataset; 1548fa9e4066Sahrens zap_cursor_t cursor; 1549fa9e4066Sahrens zap_attribute_t attr; 1550fa9e4066Sahrens 15513b2aab18SMatthew Ahrens ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); 15523b2aab18SMatthew Ahrens 1553c1379625SJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) 1554be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1555fa9e4066Sahrens 1556fa9e4066Sahrens zap_cursor_init_serialized(&cursor, 1557fa9e4066Sahrens ds->ds_dir->dd_pool->dp_meta_objset, 1558c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp); 1559fa9e4066Sahrens 156087e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 156187e5029aSahrens zap_cursor_fini(&cursor); 1562be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 156387e5029aSahrens } 156487e5029aSahrens 156587e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 156687e5029aSahrens zap_cursor_fini(&cursor); 1567be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 156887e5029aSahrens } 156987e5029aSahrens 157087e5029aSahrens (void) strcpy(name, attr.za_name); 157187e5029aSahrens if (idp) 157287e5029aSahrens *idp = attr.za_first_integer; 1573b38f0970Sck if (case_conflict) 1574b38f0970Sck *case_conflict = attr.za_normalization_conflict; 157587e5029aSahrens zap_cursor_advance(&cursor); 157687e5029aSahrens *offp = zap_cursor_serialize(&cursor); 157787e5029aSahrens zap_cursor_fini(&cursor); 157887e5029aSahrens 157987e5029aSahrens return (0); 158087e5029aSahrens } 158187e5029aSahrens 158287e5029aSahrens int 158387e5029aSahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 158487e5029aSahrens uint64_t *idp, uint64_t *offp) 158587e5029aSahrens { 1586503ad85cSMatthew Ahrens dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 158787e5029aSahrens zap_cursor_t cursor; 158887e5029aSahrens zap_attribute_t attr; 158987e5029aSahrens 159087e5029aSahrens /* there is no next dir on a snapshot! */ 1591503ad85cSMatthew Ahrens if (os->os_dsl_dataset->ds_object != 1592c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_head_dataset_obj) 1593be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 1594fa9e4066Sahrens 159587e5029aSahrens zap_cursor_init_serialized(&cursor, 159687e5029aSahrens dd->dd_pool->dp_meta_objset, 1597c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp); 159887e5029aSahrens 159987e5029aSahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 160087e5029aSahrens zap_cursor_fini(&cursor); 1601be6fd75aSMatthew Ahrens return (SET_ERROR(ENOENT)); 160287e5029aSahrens } 160387e5029aSahrens 160487e5029aSahrens if (strlen(attr.za_name) + 1 > namelen) { 160587e5029aSahrens zap_cursor_fini(&cursor); 1606be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 160787e5029aSahrens } 1608fa9e4066Sahrens 1609fa9e4066Sahrens (void) strcpy(name, attr.za_name); 161087e5029aSahrens if (idp) 161187e5029aSahrens *idp = attr.za_first_integer; 1612fa9e4066Sahrens zap_cursor_advance(&cursor); 1613fa9e4066Sahrens *offp = zap_cursor_serialize(&cursor); 161487e5029aSahrens zap_cursor_fini(&cursor); 1615fa9e4066Sahrens 1616fa9e4066Sahrens return (0); 1617fa9e4066Sahrens } 1618fa9e4066Sahrens 1619*12380e1eSArne Jansen typedef struct dmu_objset_find_ctx { 1620*12380e1eSArne Jansen taskq_t *dc_tq; 1621*12380e1eSArne Jansen dsl_pool_t *dc_dp; 1622*12380e1eSArne Jansen uint64_t dc_ddobj; 1623*12380e1eSArne Jansen int (*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *); 1624*12380e1eSArne Jansen void *dc_arg; 1625*12380e1eSArne Jansen int dc_flags; 1626*12380e1eSArne Jansen kmutex_t *dc_error_lock; 1627*12380e1eSArne Jansen int *dc_error; 1628*12380e1eSArne Jansen } dmu_objset_find_ctx_t; 1629*12380e1eSArne Jansen 1630*12380e1eSArne Jansen static void 1631*12380e1eSArne Jansen dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp) 1632088f3894Sahrens { 1633*12380e1eSArne Jansen dsl_pool_t *dp = dcp->dc_dp; 1634*12380e1eSArne Jansen dmu_objset_find_ctx_t *child_dcp; 16353b2aab18SMatthew Ahrens dsl_dir_t *dd; 16363b2aab18SMatthew Ahrens dsl_dataset_t *ds; 16373b2aab18SMatthew Ahrens zap_cursor_t zc; 16383b2aab18SMatthew Ahrens zap_attribute_t *attr; 16393b2aab18SMatthew Ahrens uint64_t thisobj; 1640*12380e1eSArne Jansen int err = 0; 16413b2aab18SMatthew Ahrens 1642*12380e1eSArne Jansen /* don't process if there already was an error */ 1643*12380e1eSArne Jansen if (*dcp->dc_error != 0) 1644*12380e1eSArne Jansen goto out; 16453b2aab18SMatthew Ahrens 1646*12380e1eSArne Jansen err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, NULL, FTAG, &dd); 16473b2aab18SMatthew Ahrens if (err != 0) 1648*12380e1eSArne Jansen goto out; 16493b2aab18SMatthew Ahrens 16503b2aab18SMatthew Ahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 16513b2aab18SMatthew Ahrens if (dd->dd_myname[0] == '$') { 16523b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 1653*12380e1eSArne Jansen goto out; 16543b2aab18SMatthew Ahrens } 16553b2aab18SMatthew Ahrens 1656c1379625SJustin T. Gibbs thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; 16573b2aab18SMatthew Ahrens attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 16583b2aab18SMatthew Ahrens 16593b2aab18SMatthew Ahrens /* 16603b2aab18SMatthew Ahrens * Iterate over all children. 16613b2aab18SMatthew Ahrens */ 1662*12380e1eSArne Jansen if (dcp->dc_flags & DS_FIND_CHILDREN) { 16633b2aab18SMatthew Ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 1664c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_child_dir_zapobj); 16653b2aab18SMatthew Ahrens zap_cursor_retrieve(&zc, attr) == 0; 16663b2aab18SMatthew Ahrens (void) zap_cursor_advance(&zc)) { 16673b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 16683b2aab18SMatthew Ahrens sizeof (uint64_t)); 16693b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 16703b2aab18SMatthew Ahrens 1671*12380e1eSArne Jansen child_dcp = kmem_alloc(sizeof (*child_dcp), KM_SLEEP); 1672*12380e1eSArne Jansen *child_dcp = *dcp; 1673*12380e1eSArne Jansen child_dcp->dc_ddobj = attr->za_first_integer; 1674*12380e1eSArne Jansen if (dcp->dc_tq != NULL) 1675*12380e1eSArne Jansen (void) taskq_dispatch(dcp->dc_tq, 1676*12380e1eSArne Jansen dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP); 1677*12380e1eSArne Jansen else 1678*12380e1eSArne Jansen dmu_objset_find_dp_impl(child_dcp); 16793b2aab18SMatthew Ahrens } 16803b2aab18SMatthew Ahrens zap_cursor_fini(&zc); 16813b2aab18SMatthew Ahrens } 16823b2aab18SMatthew Ahrens 16833b2aab18SMatthew Ahrens /* 16843b2aab18SMatthew Ahrens * Iterate over all snapshots. 16853b2aab18SMatthew Ahrens */ 1686*12380e1eSArne Jansen if (dcp->dc_flags & DS_FIND_SNAPSHOTS) { 16873b2aab18SMatthew Ahrens dsl_dataset_t *ds; 16883b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 16893b2aab18SMatthew Ahrens 16903b2aab18SMatthew Ahrens if (err == 0) { 1691c1379625SJustin T. Gibbs uint64_t snapobj; 1692c1379625SJustin T. Gibbs 1693c1379625SJustin T. Gibbs snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; 16943b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 16953b2aab18SMatthew Ahrens 16963b2aab18SMatthew Ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 16973b2aab18SMatthew Ahrens zap_cursor_retrieve(&zc, attr) == 0; 16983b2aab18SMatthew Ahrens (void) zap_cursor_advance(&zc)) { 16993b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 17003b2aab18SMatthew Ahrens sizeof (uint64_t)); 17013b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 17023b2aab18SMatthew Ahrens 17033b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, 17043b2aab18SMatthew Ahrens attr->za_first_integer, FTAG, &ds); 17053b2aab18SMatthew Ahrens if (err != 0) 17063b2aab18SMatthew Ahrens break; 1707*12380e1eSArne Jansen err = dcp->dc_func(dp, ds, dcp->dc_arg); 17083b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 17093b2aab18SMatthew Ahrens if (err != 0) 17103b2aab18SMatthew Ahrens break; 17113b2aab18SMatthew Ahrens } 17123b2aab18SMatthew Ahrens zap_cursor_fini(&zc); 17133b2aab18SMatthew Ahrens } 17143b2aab18SMatthew Ahrens } 17153b2aab18SMatthew Ahrens 17163b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 17173b2aab18SMatthew Ahrens kmem_free(attr, sizeof (zap_attribute_t)); 17183b2aab18SMatthew Ahrens 17193b2aab18SMatthew Ahrens if (err != 0) 1720*12380e1eSArne Jansen goto out; 17213b2aab18SMatthew Ahrens 17223b2aab18SMatthew Ahrens /* 17233b2aab18SMatthew Ahrens * Apply to self. 17243b2aab18SMatthew Ahrens */ 17253b2aab18SMatthew Ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 17263b2aab18SMatthew Ahrens if (err != 0) 1727*12380e1eSArne Jansen goto out; 1728*12380e1eSArne Jansen err = dcp->dc_func(dp, ds, dcp->dc_arg); 17293b2aab18SMatthew Ahrens dsl_dataset_rele(ds, FTAG); 1730*12380e1eSArne Jansen 1731*12380e1eSArne Jansen out: 1732*12380e1eSArne Jansen if (err != 0) { 1733*12380e1eSArne Jansen mutex_enter(dcp->dc_error_lock); 1734*12380e1eSArne Jansen /* only keep first error */ 1735*12380e1eSArne Jansen if (*dcp->dc_error == 0) 1736*12380e1eSArne Jansen *dcp->dc_error = err; 1737*12380e1eSArne Jansen mutex_exit(dcp->dc_error_lock); 1738*12380e1eSArne Jansen } 1739*12380e1eSArne Jansen 1740*12380e1eSArne Jansen kmem_free(dcp, sizeof (*dcp)); 1741*12380e1eSArne Jansen } 1742*12380e1eSArne Jansen 1743*12380e1eSArne Jansen static void 1744*12380e1eSArne Jansen dmu_objset_find_dp_cb(void *arg) 1745*12380e1eSArne Jansen { 1746*12380e1eSArne Jansen dmu_objset_find_ctx_t *dcp = arg; 1747*12380e1eSArne Jansen dsl_pool_t *dp = dcp->dc_dp; 1748*12380e1eSArne Jansen 1749*12380e1eSArne Jansen dsl_pool_config_enter(dp, FTAG); 1750*12380e1eSArne Jansen 1751*12380e1eSArne Jansen dmu_objset_find_dp_impl(dcp); 1752*12380e1eSArne Jansen 1753*12380e1eSArne Jansen dsl_pool_config_exit(dp, FTAG); 1754*12380e1eSArne Jansen } 1755*12380e1eSArne Jansen 1756*12380e1eSArne Jansen /* 1757*12380e1eSArne Jansen * Find objsets under and including ddobj, call func(ds) on each. 1758*12380e1eSArne Jansen * The order for the enumeration is completely undefined. 1759*12380e1eSArne Jansen * func is called with dsl_pool_config held. 1760*12380e1eSArne Jansen */ 1761*12380e1eSArne Jansen int 1762*12380e1eSArne Jansen dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj, 1763*12380e1eSArne Jansen int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags) 1764*12380e1eSArne Jansen { 1765*12380e1eSArne Jansen int error = 0; 1766*12380e1eSArne Jansen taskq_t *tq = NULL; 1767*12380e1eSArne Jansen int ntasks; 1768*12380e1eSArne Jansen dmu_objset_find_ctx_t *dcp; 1769*12380e1eSArne Jansen kmutex_t err_lock; 1770*12380e1eSArne Jansen 1771*12380e1eSArne Jansen mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL); 1772*12380e1eSArne Jansen dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP); 1773*12380e1eSArne Jansen dcp->dc_tq = NULL; 1774*12380e1eSArne Jansen dcp->dc_dp = dp; 1775*12380e1eSArne Jansen dcp->dc_ddobj = ddobj; 1776*12380e1eSArne Jansen dcp->dc_func = func; 1777*12380e1eSArne Jansen dcp->dc_arg = arg; 1778*12380e1eSArne Jansen dcp->dc_flags = flags; 1779*12380e1eSArne Jansen dcp->dc_error_lock = &err_lock; 1780*12380e1eSArne Jansen dcp->dc_error = &error; 1781*12380e1eSArne Jansen 1782*12380e1eSArne Jansen if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) { 1783*12380e1eSArne Jansen /* 1784*12380e1eSArne Jansen * In case a write lock is held we can't make use of 1785*12380e1eSArne Jansen * parallelism, as down the stack of the worker threads 1786*12380e1eSArne Jansen * the lock is asserted via dsl_pool_config_held. 1787*12380e1eSArne Jansen * In case of a read lock this is solved by getting a read 1788*12380e1eSArne Jansen * lock in each worker thread, which isn't possible in case 1789*12380e1eSArne Jansen * of a writer lock. So we fall back to the synchronous path 1790*12380e1eSArne Jansen * here. 1791*12380e1eSArne Jansen * In the future it might be possible to get some magic into 1792*12380e1eSArne Jansen * dsl_pool_config_held in a way that it returns true for 1793*12380e1eSArne Jansen * the worker threads so that a single lock held from this 1794*12380e1eSArne Jansen * thread suffices. For now, stay single threaded. 1795*12380e1eSArne Jansen */ 1796*12380e1eSArne Jansen dmu_objset_find_dp_impl(dcp); 1797*12380e1eSArne Jansen 1798*12380e1eSArne Jansen return (error); 1799*12380e1eSArne Jansen } 1800*12380e1eSArne Jansen 1801*12380e1eSArne Jansen ntasks = dmu_find_threads; 1802*12380e1eSArne Jansen if (ntasks == 0) 1803*12380e1eSArne Jansen ntasks = vdev_count_leaves(dp->dp_spa) * 4; 1804*12380e1eSArne Jansen tq = taskq_create("dmu_objset_find", ntasks, minclsyspri, ntasks, 1805*12380e1eSArne Jansen INT_MAX, 0); 1806*12380e1eSArne Jansen if (tq == NULL) { 1807*12380e1eSArne Jansen kmem_free(dcp, sizeof (*dcp)); 1808*12380e1eSArne Jansen return (SET_ERROR(ENOMEM)); 1809*12380e1eSArne Jansen } 1810*12380e1eSArne Jansen dcp->dc_tq = tq; 1811*12380e1eSArne Jansen 1812*12380e1eSArne Jansen /* dcp will be freed by task */ 1813*12380e1eSArne Jansen (void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP); 1814*12380e1eSArne Jansen 1815*12380e1eSArne Jansen /* 1816*12380e1eSArne Jansen * PORTING: this code relies on the property of taskq_wait to wait 1817*12380e1eSArne Jansen * until no more tasks are queued and no more tasks are active. As 1818*12380e1eSArne Jansen * we always queue new tasks from within other tasks, task_wait 1819*12380e1eSArne Jansen * reliably waits for the full recursion to finish, even though we 1820*12380e1eSArne Jansen * enqueue new tasks after taskq_wait has been called. 1821*12380e1eSArne Jansen * On platforms other than illumos, taskq_wait may not have this 1822*12380e1eSArne Jansen * property. 1823*12380e1eSArne Jansen */ 1824*12380e1eSArne Jansen taskq_wait(tq); 1825*12380e1eSArne Jansen taskq_destroy(tq); 1826*12380e1eSArne Jansen mutex_destroy(&err_lock); 1827*12380e1eSArne Jansen 1828*12380e1eSArne Jansen return (error); 1829088f3894Sahrens } 1830088f3894Sahrens 1831088f3894Sahrens /* 18323b2aab18SMatthew Ahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 18333b2aab18SMatthew Ahrens * The dp_config_rwlock must not be held when this is called, and it 18343b2aab18SMatthew Ahrens * will not be held when the callback is called. 18353b2aab18SMatthew Ahrens * Therefore this function should only be used when the pool is not changing 18363b2aab18SMatthew Ahrens * (e.g. in syncing context), or the callback can deal with the possible races. 1837088f3894Sahrens */ 18383b2aab18SMatthew Ahrens static int 18393b2aab18SMatthew Ahrens dmu_objset_find_impl(spa_t *spa, const char *name, 18403b2aab18SMatthew Ahrens int func(const char *, void *), void *arg, int flags) 1841fa9e4066Sahrens { 1842fa9e4066Sahrens dsl_dir_t *dd; 18433b2aab18SMatthew Ahrens dsl_pool_t *dp = spa_get_dsl(spa); 1844088f3894Sahrens dsl_dataset_t *ds; 1845fa9e4066Sahrens zap_cursor_t zc; 1846b7661cccSmmusante zap_attribute_t *attr; 1847fa9e4066Sahrens char *child; 1848088f3894Sahrens uint64_t thisobj; 1849088f3894Sahrens int err; 1850fa9e4066Sahrens 18513b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 18523b2aab18SMatthew Ahrens 18533b2aab18SMatthew Ahrens err = dsl_dir_hold(dp, name, FTAG, &dd, NULL); 18543b2aab18SMatthew Ahrens if (err != 0) { 18553b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 18561d452cf5Sahrens return (err); 18573b2aab18SMatthew Ahrens } 1858fa9e4066Sahrens 1859088f3894Sahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1860088f3894Sahrens if (dd->dd_myname[0] == '$') { 18613b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 18623b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1863088f3894Sahrens return (0); 1864088f3894Sahrens } 1865088f3894Sahrens 1866c1379625SJustin T. Gibbs thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; 1867b7661cccSmmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1868fa9e4066Sahrens 1869fa9e4066Sahrens /* 1870fa9e4066Sahrens * Iterate over all children. 1871fa9e4066Sahrens */ 18720b69c2f0Sahrens if (flags & DS_FIND_CHILDREN) { 1873088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 1874c1379625SJustin T. Gibbs dsl_dir_phys(dd)->dd_child_dir_zapobj); 1875b7661cccSmmusante zap_cursor_retrieve(&zc, attr) == 0; 18760b69c2f0Sahrens (void) zap_cursor_advance(&zc)) { 18773b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 18783b2aab18SMatthew Ahrens sizeof (uint64_t)); 18793b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 1880fa9e4066Sahrens 1881486ae710SMatthew Ahrens child = kmem_asprintf("%s/%s", name, attr->za_name); 18823b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 18833b2aab18SMatthew Ahrens err = dmu_objset_find_impl(spa, child, 18843b2aab18SMatthew Ahrens func, arg, flags); 18853b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 1886486ae710SMatthew Ahrens strfree(child); 18873b2aab18SMatthew Ahrens if (err != 0) 18880b69c2f0Sahrens break; 18890b69c2f0Sahrens } 18900b69c2f0Sahrens zap_cursor_fini(&zc); 18911d452cf5Sahrens 18923b2aab18SMatthew Ahrens if (err != 0) { 18933b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 18943b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1895b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 18960b69c2f0Sahrens return (err); 18970b69c2f0Sahrens } 1898fa9e4066Sahrens } 1899fa9e4066Sahrens 1900fa9e4066Sahrens /* 1901fa9e4066Sahrens * Iterate over all snapshots. 1902fa9e4066Sahrens */ 1903088f3894Sahrens if (flags & DS_FIND_SNAPSHOTS) { 1904088f3894Sahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1905088f3894Sahrens 1906088f3894Sahrens if (err == 0) { 1907c1379625SJustin T. Gibbs uint64_t snapobj; 1908c1379625SJustin T. Gibbs 1909c1379625SJustin T. Gibbs snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; 1910088f3894Sahrens dsl_dataset_rele(ds, FTAG); 1911088f3894Sahrens 1912088f3894Sahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1913088f3894Sahrens zap_cursor_retrieve(&zc, attr) == 0; 1914088f3894Sahrens (void) zap_cursor_advance(&zc)) { 19153b2aab18SMatthew Ahrens ASSERT3U(attr->za_integer_length, ==, 1916088f3894Sahrens sizeof (uint64_t)); 19173b2aab18SMatthew Ahrens ASSERT3U(attr->za_num_integers, ==, 1); 1918088f3894Sahrens 1919486ae710SMatthew Ahrens child = kmem_asprintf("%s@%s", 1920486ae710SMatthew Ahrens name, attr->za_name); 19213b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 19223b2aab18SMatthew Ahrens err = func(child, arg); 19233b2aab18SMatthew Ahrens dsl_pool_config_enter(dp, FTAG); 1924486ae710SMatthew Ahrens strfree(child); 19253b2aab18SMatthew Ahrens if (err != 0) 1926088f3894Sahrens break; 1927088f3894Sahrens } 1928088f3894Sahrens zap_cursor_fini(&zc); 1929fa9e4066Sahrens } 1930fa9e4066Sahrens } 1931fa9e4066Sahrens 19323b2aab18SMatthew Ahrens dsl_dir_rele(dd, FTAG); 1933b7661cccSmmusante kmem_free(attr, sizeof (zap_attribute_t)); 19343b2aab18SMatthew Ahrens dsl_pool_config_exit(dp, FTAG); 1935fa9e4066Sahrens 19363b2aab18SMatthew Ahrens if (err != 0) 19371d452cf5Sahrens return (err); 19381d452cf5Sahrens 19393b2aab18SMatthew Ahrens /* Apply to self. */ 19403b2aab18SMatthew Ahrens return (func(name, arg)); 1941fa9e4066Sahrens } 1942f18faf3fSek 19433b2aab18SMatthew Ahrens /* 19443b2aab18SMatthew Ahrens * See comment above dmu_objset_find_impl(). 19453b2aab18SMatthew Ahrens */ 19467f73c863SRich Morris int 19473b2aab18SMatthew Ahrens dmu_objset_find(char *name, int func(const char *, void *), void *arg, 19483b2aab18SMatthew Ahrens int flags) 19497f73c863SRich Morris { 19503b2aab18SMatthew Ahrens spa_t *spa; 19513b2aab18SMatthew Ahrens int error; 19527f73c863SRich Morris 19533b2aab18SMatthew Ahrens error = spa_open(name, &spa, FTAG); 19543b2aab18SMatthew Ahrens if (error != 0) 19553b2aab18SMatthew Ahrens return (error); 19563b2aab18SMatthew Ahrens error = dmu_objset_find_impl(spa, name, func, arg, flags); 19573b2aab18SMatthew Ahrens spa_close(spa, FTAG); 19583b2aab18SMatthew Ahrens return (error); 19597f73c863SRich Morris } 19607f73c863SRich Morris 1961f18faf3fSek void 1962f18faf3fSek dmu_objset_set_user(objset_t *os, void *user_ptr) 1963f18faf3fSek { 1964503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1965503ad85cSMatthew Ahrens os->os_user_ptr = user_ptr; 1966f18faf3fSek } 1967f18faf3fSek 1968f18faf3fSek void * 1969f18faf3fSek dmu_objset_get_user(objset_t *os) 1970f18faf3fSek { 1971503ad85cSMatthew Ahrens ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1972503ad85cSMatthew Ahrens return (os->os_user_ptr); 1973f18faf3fSek } 19743b2aab18SMatthew Ahrens 19753b2aab18SMatthew Ahrens /* 19763b2aab18SMatthew Ahrens * Determine name of filesystem, given name of snapshot. 19773b2aab18SMatthew Ahrens * buf must be at least MAXNAMELEN bytes 19783b2aab18SMatthew Ahrens */ 19793b2aab18SMatthew Ahrens int 19803b2aab18SMatthew Ahrens dmu_fsname(const char *snapname, char *buf) 19813b2aab18SMatthew Ahrens { 19823b2aab18SMatthew Ahrens char *atp = strchr(snapname, '@'); 19833b2aab18SMatthew Ahrens if (atp == NULL) 1984be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 19853b2aab18SMatthew Ahrens if (atp - snapname >= MAXNAMELEN) 1986be6fd75aSMatthew Ahrens return (SET_ERROR(ENAMETOOLONG)); 19873b2aab18SMatthew Ahrens (void) strlcpy(buf, snapname, atp - snapname + 1); 19883b2aab18SMatthew Ahrens return (0); 19893b2aab18SMatthew Ahrens } 1990