Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 8779:f164e0e90508
6784924 panic while ludelete (zfs destroy)
| author | Mark J Musante <Mark.Musante@Sun.COM> |
|---|---|
| date | Thu, 12 Feb 2009 13:03:03 -0500 |
| parents | e1d96ca6808c |
| children | 887948510f80 |
| rev | line source |
|---|---|
| 789 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
| 1544 | 5 * Common Development and Distribution License (the "License"). |
| 6 * You may not use this file except in compliance with the License. | |
| 789 | 7 * |
| 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 * or http://www.opensolaris.org/os/licensing. | |
| 10 * See the License for the specific language governing permissions | |
| 11 * and limitations under the License. | |
| 12 * | |
| 13 * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 * If applicable, add the following below this CDDL HEADER, with the | |
| 16 * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 * | |
| 19 * CDDL HEADER END | |
| 20 */ | |
| 21 /* | |
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22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. |
| 789 | 23 * Use is subject to license terms. |
| 24 */ | |
| 25 | |
| 26 #include <sys/dmu_objset.h> | |
| 27 #include <sys/dsl_dataset.h> | |
| 28 #include <sys/dsl_dir.h> | |
| 2082 | 29 #include <sys/dsl_prop.h> |
| 2199 | 30 #include <sys/dsl_synctask.h> |
| 789 | 31 #include <sys/dmu_traverse.h> |
| 32 #include <sys/dmu_tx.h> | |
| 33 #include <sys/arc.h> | |
| 34 #include <sys/zio.h> | |
| 35 #include <sys/zap.h> | |
| 36 #include <sys/unique.h> | |
| 37 #include <sys/zfs_context.h> | |
| 4007 | 38 #include <sys/zfs_ioctl.h> |
| 4543 | 39 #include <sys/spa.h> |
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40 #include <sys/zfs_znode.h> |
| 4543 | 41 #include <sys/sunddi.h> |
| 789 | 42 |
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43 static char *dsl_reaper = "the grim reaper"; |
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44 |
| 2199 | 45 static dsl_checkfunc_t dsl_dataset_destroy_begin_check; |
| 46 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync; | |
| 47 static dsl_checkfunc_t dsl_dataset_rollback_check; | |
| 48 static dsl_syncfunc_t dsl_dataset_rollback_sync; | |
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49 static dsl_syncfunc_t dsl_dataset_set_reservation_sync; |
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50 |
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51 #define DS_REF_MAX (1ULL << 62) |
| 789 | 52 |
| 53 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE | |
| 54 | |
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55 #define DSL_DATASET_IS_DESTROYED(ds) ((ds)->ds_owner == dsl_reaper) |
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56 |
| 789 | 57 |
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58 /* |
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59 * Figure out how much of this delta should be propogated to the dsl_dir |
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60 * layer. If there's a refreservation, that space has already been |
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61 * partially accounted for in our ancestors. |
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62 */ |
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63 static int64_t |
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64 parent_delta(dsl_dataset_t *ds, int64_t delta) |
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65 { |
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66 uint64_t old_bytes, new_bytes; |
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67 |
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68 if (ds->ds_reserved == 0) |
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69 return (delta); |
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70 |
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71 old_bytes = MAX(ds->ds_phys->ds_unique_bytes, ds->ds_reserved); |
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72 new_bytes = MAX(ds->ds_phys->ds_unique_bytes + delta, ds->ds_reserved); |
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73 |
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74 ASSERT3U(ABS((int64_t)(new_bytes - old_bytes)), <=, ABS(delta)); |
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75 return (new_bytes - old_bytes); |
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76 } |
| 789 | 77 |
| 78 void | |
| 79 dsl_dataset_block_born(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 80 { | |
| 2082 | 81 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp); |
| 789 | 82 int compressed = BP_GET_PSIZE(bp); |
| 83 int uncompressed = BP_GET_UCSIZE(bp); | |
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84 int64_t delta; |
| 789 | 85 |
| 86 dprintf_bp(bp, "born, ds=%p\n", ds); | |
| 87 | |
| 88 ASSERT(dmu_tx_is_syncing(tx)); | |
| 89 /* It could have been compressed away to nothing */ | |
| 90 if (BP_IS_HOLE(bp)) | |
| 91 return; | |
| 92 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE); | |
| 93 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES); | |
| 94 if (ds == NULL) { | |
| 95 /* | |
| 96 * Account for the meta-objset space in its placeholder | |
| 97 * dsl_dir. | |
| 98 */ | |
| 99 ASSERT3U(compressed, ==, uncompressed); /* it's all metadata */ | |
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100 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD, |
| 789 | 101 used, compressed, uncompressed, tx); |
| 102 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx); | |
| 103 return; | |
| 104 } | |
| 105 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
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106 mutex_enter(&ds->ds_dir->dd_lock); |
| 789 | 107 mutex_enter(&ds->ds_lock); |
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108 delta = parent_delta(ds, used); |
| 789 | 109 ds->ds_phys->ds_used_bytes += used; |
| 110 ds->ds_phys->ds_compressed_bytes += compressed; | |
| 111 ds->ds_phys->ds_uncompressed_bytes += uncompressed; | |
| 112 ds->ds_phys->ds_unique_bytes += used; | |
| 113 mutex_exit(&ds->ds_lock); | |
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114 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, delta, |
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115 compressed, uncompressed, tx); |
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116 dsl_dir_transfer_space(ds->ds_dir, used - delta, |
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117 DD_USED_REFRSRV, DD_USED_HEAD, tx); |
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118 mutex_exit(&ds->ds_dir->dd_lock); |
| 789 | 119 } |
| 120 | |
| 6992 | 121 int |
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122 dsl_dataset_block_kill(dsl_dataset_t *ds, blkptr_t *bp, zio_t *pio, |
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123 dmu_tx_t *tx) |
| 789 | 124 { |
| 2082 | 125 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp); |
| 789 | 126 int compressed = BP_GET_PSIZE(bp); |
| 127 int uncompressed = BP_GET_UCSIZE(bp); | |
| 128 | |
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129 ASSERT(pio != NULL); |
| 789 | 130 ASSERT(dmu_tx_is_syncing(tx)); |
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131 /* No block pointer => nothing to free */ |
| 789 | 132 if (BP_IS_HOLE(bp)) |
| 6992 | 133 return (0); |
| 789 | 134 |
| 135 ASSERT(used > 0); | |
| 136 if (ds == NULL) { | |
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137 int err; |
| 789 | 138 /* |
| 139 * Account for the meta-objset space in its placeholder | |
| 140 * dataset. | |
| 141 */ | |
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142 err = dsl_free(pio, tx->tx_pool, |
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143 tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT); |
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144 ASSERT(err == 0); |
| 789 | 145 |
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146 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD, |
| 789 | 147 -used, -compressed, -uncompressed, tx); |
| 148 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx); | |
| 6992 | 149 return (used); |
| 789 | 150 } |
| 151 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool); | |
| 152 | |
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153 ASSERT(!dsl_dataset_is_snapshot(ds)); |
| 789 | 154 dmu_buf_will_dirty(ds->ds_dbuf, tx); |
| 155 | |
| 156 if (bp->blk_birth > ds->ds_phys->ds_prev_snap_txg) { | |
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157 int err; |
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158 int64_t delta; |
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159 |
| 789 | 160 dprintf_bp(bp, "freeing: %s", ""); |
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161 err = dsl_free(pio, tx->tx_pool, |
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162 tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT); |
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163 ASSERT(err == 0); |
| 789 | 164 |
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165 mutex_enter(&ds->ds_dir->dd_lock); |
| 789 | 166 mutex_enter(&ds->ds_lock); |
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167 ASSERT(ds->ds_phys->ds_unique_bytes >= used || |
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168 !DS_UNIQUE_IS_ACCURATE(ds)); |
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169 delta = parent_delta(ds, -used); |
| 789 | 170 ds->ds_phys->ds_unique_bytes -= used; |
| 171 mutex_exit(&ds->ds_lock); | |
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172 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, |
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173 delta, -compressed, -uncompressed, tx); |
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174 dsl_dir_transfer_space(ds->ds_dir, -used - delta, |
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175 DD_USED_REFRSRV, DD_USED_HEAD, tx); |
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176 mutex_exit(&ds->ds_dir->dd_lock); |
| 789 | 177 } else { |
| 178 dprintf_bp(bp, "putting on dead list: %s", ""); | |
| 1544 | 179 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, bp, tx)); |
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180 ASSERT3U(ds->ds_prev->ds_object, ==, |
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181 ds->ds_phys->ds_prev_snap_obj); |
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182 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0); |
| 789 | 183 /* if (bp->blk_birth > prev prev snap txg) prev unique += bs */ |
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184 if (ds->ds_prev->ds_phys->ds_next_snap_obj == |
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185 ds->ds_object && bp->blk_birth > |
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186 ds->ds_prev->ds_phys->ds_prev_snap_txg) { |
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187 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); |
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188 mutex_enter(&ds->ds_prev->ds_lock); |
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189 ds->ds_prev->ds_phys->ds_unique_bytes += used; |
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190 mutex_exit(&ds->ds_prev->ds_lock); |
| 789 | 191 } |
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192 if (bp->blk_birth > ds->ds_origin_txg) { |
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193 dsl_dir_transfer_space(ds->ds_dir, used, |
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194 DD_USED_HEAD, DD_USED_SNAP, tx); |
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195 } |
| 789 | 196 } |
| 197 mutex_enter(&ds->ds_lock); | |
| 198 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used); | |
| 199 ds->ds_phys->ds_used_bytes -= used; | |
| 200 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed); | |
| 201 ds->ds_phys->ds_compressed_bytes -= compressed; | |
| 202 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed); | |
| 203 ds->ds_phys->ds_uncompressed_bytes -= uncompressed; | |
| 204 mutex_exit(&ds->ds_lock); | |
| 6992 | 205 |
| 206 return (used); | |
| 789 | 207 } |
| 208 | |
| 1544 | 209 uint64_t |
| 210 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds) | |
| 789 | 211 { |
| 2885 | 212 uint64_t trysnap = 0; |
| 213 | |
| 789 | 214 if (ds == NULL) |
| 1544 | 215 return (0); |
| 789 | 216 /* |
| 217 * The snapshot creation could fail, but that would cause an | |
| 218 * incorrect FALSE return, which would only result in an | |
| 219 * overestimation of the amount of space that an operation would | |
| 220 * consume, which is OK. | |
| 221 * | |
| 222 * There's also a small window where we could miss a pending | |
| 223 * snapshot, because we could set the sync task in the quiescing | |
| 224 * phase. So this should only be used as a guess. | |
| 225 */ | |
| 2885 | 226 if (ds->ds_trysnap_txg > |
| 227 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa)) | |
| 228 trysnap = ds->ds_trysnap_txg; | |
| 229 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap)); | |
| 1544 | 230 } |
| 231 | |
| 232 int | |
| 233 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth) | |
| 234 { | |
| 235 return (blk_birth > dsl_dataset_prev_snap_txg(ds)); | |
| 789 | 236 } |
| 237 | |
| 238 /* ARGSUSED */ | |
| 239 static void | |
| 240 dsl_dataset_evict(dmu_buf_t *db, void *dsv) | |
| 241 { | |
| 242 dsl_dataset_t *ds = dsv; | |
| 243 | |
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244 ASSERT(ds->ds_owner == NULL || DSL_DATASET_IS_DESTROYED(ds)); |
| 789 | 245 |
| 246 dprintf_ds(ds, "evicting %s\n", ""); | |
| 247 | |
| 4787 | 248 unique_remove(ds->ds_fsid_guid); |
| 789 | 249 |
| 250 if (ds->ds_user_ptr != NULL) | |
| 251 ds->ds_user_evict_func(ds, ds->ds_user_ptr); | |
| 252 | |
| 253 if (ds->ds_prev) { | |
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254 dsl_dataset_drop_ref(ds->ds_prev, ds); |
| 789 | 255 ds->ds_prev = NULL; |
| 256 } | |
| 257 | |
| 258 bplist_close(&ds->ds_deadlist); | |
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259 if (ds->ds_dir) |
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260 dsl_dir_close(ds->ds_dir, ds); |
| 789 | 261 |
| 4787 | 262 ASSERT(!list_link_active(&ds->ds_synced_link)); |
| 789 | 263 |
| 2856 | 264 mutex_destroy(&ds->ds_lock); |
| 4787 | 265 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 266 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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267 rw_destroy(&ds->ds_rwlock); |
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268 cv_destroy(&ds->ds_exclusive_cv); |
| 2856 | 269 |
| 789 | 270 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 271 } | |
| 272 | |
| 1544 | 273 static int |
| 789 | 274 dsl_dataset_get_snapname(dsl_dataset_t *ds) |
| 275 { | |
| 276 dsl_dataset_phys_t *headphys; | |
| 277 int err; | |
| 278 dmu_buf_t *headdbuf; | |
| 279 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 280 objset_t *mos = dp->dp_meta_objset; | |
| 281 | |
| 282 if (ds->ds_snapname[0]) | |
| 1544 | 283 return (0); |
| 789 | 284 if (ds->ds_phys->ds_next_snap_obj == 0) |
| 1544 | 285 return (0); |
| 789 | 286 |
| 1544 | 287 err = dmu_bonus_hold(mos, ds->ds_dir->dd_phys->dd_head_dataset_obj, |
| 288 FTAG, &headdbuf); | |
| 289 if (err) | |
| 290 return (err); | |
| 789 | 291 headphys = headdbuf->db_data; |
| 292 err = zap_value_search(dp->dp_meta_objset, | |
| 4577 | 293 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname); |
| 1544 | 294 dmu_buf_rele(headdbuf, FTAG); |
| 295 return (err); | |
| 789 | 296 } |
| 297 | |
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298 static int |
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299 dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, uint64_t *value) |
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300 { |
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301 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
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302 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; |
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303 matchtype_t mt; |
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304 int err; |
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305 |
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306 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET) |
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307 mt = MT_FIRST; |
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308 else |
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309 mt = MT_EXACT; |
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310 |
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311 err = zap_lookup_norm(mos, snapobj, name, 8, 1, |
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312 value, mt, NULL, 0, NULL); |
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313 if (err == ENOTSUP && mt == MT_FIRST) |
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314 err = zap_lookup(mos, snapobj, name, 8, 1, value); |
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315 return (err); |
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316 } |
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317 |
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318 static int |
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319 dsl_dataset_snap_remove(dsl_dataset_t *ds, char *name, dmu_tx_t *tx) |
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320 { |
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321 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
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322 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; |
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323 matchtype_t mt; |
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324 int err; |
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325 |
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326 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET) |
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327 mt = MT_FIRST; |
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328 else |
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329 mt = MT_EXACT; |
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330 |
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331 err = zap_remove_norm(mos, snapobj, name, mt, tx); |
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332 if (err == ENOTSUP && mt == MT_FIRST) |
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333 err = zap_remove(mos, snapobj, name, tx); |
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334 return (err); |
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335 } |
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336 |
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337 static int |
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338 dsl_dataset_get_ref(dsl_pool_t *dp, uint64_t dsobj, void *tag, |
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339 dsl_dataset_t **dsp) |
| 789 | 340 { |
| 341 objset_t *mos = dp->dp_meta_objset; | |
| 342 dmu_buf_t *dbuf; | |
| 343 dsl_dataset_t *ds; | |
| 1544 | 344 int err; |
| 789 | 345 |
| 346 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || | |
| 347 dsl_pool_sync_context(dp)); | |
| 348 | |
| 1544 | 349 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf); |
| 350 if (err) | |
| 351 return (err); | |
| 789 | 352 ds = dmu_buf_get_user(dbuf); |
| 353 if (ds == NULL) { | |
| 354 dsl_dataset_t *winner; | |
| 355 | |
| 356 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP); | |
| 357 ds->ds_dbuf = dbuf; | |
| 358 ds->ds_object = dsobj; | |
| 359 ds->ds_phys = dbuf->db_data; | |
| 360 | |
| 2856 | 361 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL); |
| 4787 | 362 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 363 mutex_init(&ds->ds_deadlist.bpl_lock, NULL, MUTEX_DEFAULT, |
| 364 NULL); | |
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365 rw_init(&ds->ds_rwlock, 0, 0, 0); |
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366 cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL); |
| 2856 | 367 |
| 1544 | 368 err = bplist_open(&ds->ds_deadlist, |
| 789 | 369 mos, ds->ds_phys->ds_deadlist_obj); |
| 1544 | 370 if (err == 0) { |
| 371 err = dsl_dir_open_obj(dp, | |
| 372 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir); | |
| 373 } | |
| 374 if (err) { | |
| 375 /* | |
| 376 * we don't really need to close the blist if we | |
| 377 * just opened it. | |
| 378 */ | |
| 2856 | 379 mutex_destroy(&ds->ds_lock); |
| 4787 | 380 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 381 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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382 rw_destroy(&ds->ds_rwlock); |
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383 cv_destroy(&ds->ds_exclusive_cv); |
| 1544 | 384 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 385 dmu_buf_rele(dbuf, tag); | |
| 386 return (err); | |
| 387 } | |
| 789 | 388 |
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389 if (!dsl_dataset_is_snapshot(ds)) { |
| 789 | 390 ds->ds_snapname[0] = '\0'; |
| 391 if (ds->ds_phys->ds_prev_snap_obj) { | |
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392 err = dsl_dataset_get_ref(dp, |
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393 ds->ds_phys->ds_prev_snap_obj, |
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394 ds, &ds->ds_prev); |
| 789 | 395 } |
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396 |
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397 if (err == 0 && dsl_dir_is_clone(ds->ds_dir)) { |
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398 dsl_dataset_t *origin; |
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399 |
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400 err = dsl_dataset_hold_obj(dp, |
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401 ds->ds_dir->dd_phys->dd_origin_obj, |
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402 FTAG, &origin); |
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403 if (err == 0) { |
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404 ds->ds_origin_txg = |
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405 origin->ds_phys->ds_creation_txg; |
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406 dsl_dataset_rele(origin, FTAG); |
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407 } |
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408 } |
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409 } else if (zfs_flags & ZFS_DEBUG_SNAPNAMES) { |
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410 err = dsl_dataset_get_snapname(ds); |
| 789 | 411 } |
| 412 | |
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413 if (err == 0 && !dsl_dataset_is_snapshot(ds)) { |
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414 /* |
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415 * In sync context, we're called with either no lock |
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416 * or with the write lock. If we're not syncing, |
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417 * we're always called with the read lock held. |
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418 */ |
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419 boolean_t need_lock = |
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420 !RW_WRITE_HELD(&dp->dp_config_rwlock) && |
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421 dsl_pool_sync_context(dp); |
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422 |
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423 if (need_lock) |
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424 rw_enter(&dp->dp_config_rwlock, RW_READER); |
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425 |
| 7265 | 426 err = dsl_prop_get_ds(ds, |
|
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|
427 "refreservation", sizeof (uint64_t), 1, |
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428 &ds->ds_reserved, NULL); |
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429 if (err == 0) { |
| 7265 | 430 err = dsl_prop_get_ds(ds, |
|
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|
431 "refquota", sizeof (uint64_t), 1, |
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432 &ds->ds_quota, NULL); |
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433 } |
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434 |
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435 if (need_lock) |
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436 rw_exit(&dp->dp_config_rwlock); |
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437 } else { |
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438 ds->ds_reserved = ds->ds_quota = 0; |
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439 } |
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440 |
| 1544 | 441 if (err == 0) { |
| 442 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys, | |
| 443 dsl_dataset_evict); | |
| 444 } | |
| 445 if (err || winner) { | |
| 789 | 446 bplist_close(&ds->ds_deadlist); |
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447 if (ds->ds_prev) |
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448 dsl_dataset_drop_ref(ds->ds_prev, ds); |
| 789 | 449 dsl_dir_close(ds->ds_dir, ds); |
| 2856 | 450 mutex_destroy(&ds->ds_lock); |
| 4787 | 451 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 452 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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453 rw_destroy(&ds->ds_rwlock); |
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454 cv_destroy(&ds->ds_exclusive_cv); |
| 789 | 455 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 1544 | 456 if (err) { |
| 457 dmu_buf_rele(dbuf, tag); | |
| 458 return (err); | |
| 459 } | |
| 789 | 460 ds = winner; |
| 461 } else { | |
| 4787 | 462 ds->ds_fsid_guid = |
| 789 | 463 unique_insert(ds->ds_phys->ds_fsid_guid); |
| 464 } | |
| 465 } | |
| 466 ASSERT3P(ds->ds_dbuf, ==, dbuf); | |
| 467 ASSERT3P(ds->ds_phys, ==, dbuf->db_data); | |
|
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468 ASSERT(ds->ds_phys->ds_prev_snap_obj != 0 || |
|
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469 spa_version(dp->dp_spa) < SPA_VERSION_ORIGIN || |
|
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470 dp->dp_origin_snap == NULL || ds == dp->dp_origin_snap); |
| 789 | 471 mutex_enter(&ds->ds_lock); |
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472 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) { |
| 789 | 473 mutex_exit(&ds->ds_lock); |
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474 dmu_buf_rele(ds->ds_dbuf, tag); |
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475 return (ENOENT); |
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476 } |
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477 mutex_exit(&ds->ds_lock); |
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478 *dsp = ds; |
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479 return (0); |
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480 } |
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481 |
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482 static int |
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483 dsl_dataset_hold_ref(dsl_dataset_t *ds, void *tag) |
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484 { |
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485 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
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486 |
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487 /* |
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488 * In syncing context we don't want the rwlock lock: there |
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489 * may be an existing writer waiting for sync phase to |
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490 * finish. We don't need to worry about such writers, since |
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491 * sync phase is single-threaded, so the writer can't be |
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492 * doing anything while we are active. |
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493 */ |
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494 if (dsl_pool_sync_context(dp)) { |
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495 ASSERT(!DSL_DATASET_IS_DESTROYED(ds)); |
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496 return (0); |
| 789 | 497 } |
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498 |
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499 /* |
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500 * Normal users will hold the ds_rwlock as a READER until they |
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501 * are finished (i.e., call dsl_dataset_rele()). "Owners" will |
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502 * drop their READER lock after they set the ds_owner field. |
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503 * |
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504 * If the dataset is being destroyed, the destroy thread will |
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505 * obtain a WRITER lock for exclusive access after it's done its |
|
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506 * open-context work and then change the ds_owner to |
|
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507 * dsl_reaper once destruction is assured. So threads |
|
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508 * may block here temporarily, until the "destructability" of |
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509 * the dataset is determined. |
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510 */ |
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511 ASSERT(!RW_WRITE_HELD(&dp->dp_config_rwlock)); |
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512 mutex_enter(&ds->ds_lock); |
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513 while (!rw_tryenter(&ds->ds_rwlock, RW_READER)) { |
|
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514 rw_exit(&dp->dp_config_rwlock); |
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515 cv_wait(&ds->ds_exclusive_cv, &ds->ds_lock); |
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516 if (DSL_DATASET_IS_DESTROYED(ds)) { |
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517 mutex_exit(&ds->ds_lock); |
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518 dsl_dataset_drop_ref(ds, tag); |
|
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519 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
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520 return (ENOENT); |
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521 } |
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522 rw_enter(&dp->dp_config_rwlock, RW_READER); |
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523 } |
| 789 | 524 mutex_exit(&ds->ds_lock); |
| 1544 | 525 return (0); |
| 789 | 526 } |
| 527 | |
| 528 int | |
|
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529 dsl_dataset_hold_obj(dsl_pool_t *dp, uint64_t dsobj, void *tag, |
|
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530 dsl_dataset_t **dsp) |
|
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531 { |
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532 int err = dsl_dataset_get_ref(dp, dsobj, tag, dsp); |
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533 |
|
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534 if (err) |
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535 return (err); |
|
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536 return (dsl_dataset_hold_ref(*dsp, tag)); |
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537 } |
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538 |
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539 int |
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540 dsl_dataset_own_obj(dsl_pool_t *dp, uint64_t dsobj, int flags, void *owner, |
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541 dsl_dataset_t **dsp) |
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542 { |
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543 int err = dsl_dataset_hold_obj(dp, dsobj, owner, dsp); |
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544 |
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545 ASSERT(DS_MODE_TYPE(flags) != DS_MODE_USER); |
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546 |
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547 if (err) |
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548 return (err); |
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549 if (!dsl_dataset_tryown(*dsp, DS_MODE_IS_INCONSISTENT(flags), owner)) { |
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550 dsl_dataset_rele(*dsp, owner); |
|
8779
f164e0e90508
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|
551 *dsp = NULL; |
|
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552 return (EBUSY); |
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553 } |
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554 return (0); |
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555 } |
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556 |
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|
557 int |
|
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|
558 dsl_dataset_hold(const char *name, void *tag, dsl_dataset_t **dsp) |
| 789 | 559 { |
| 560 dsl_dir_t *dd; | |
| 561 dsl_pool_t *dp; | |
|
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562 const char *snapname; |
| 789 | 563 uint64_t obj; |
| 564 int err = 0; | |
| 565 | |
|
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566 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname); |
| 1544 | 567 if (err) |
| 568 return (err); | |
| 789 | 569 |
| 570 dp = dd->dd_pool; | |
| 571 obj = dd->dd_phys->dd_head_dataset_obj; | |
| 572 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
|
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|
573 if (obj) |
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574 err = dsl_dataset_get_ref(dp, obj, tag, dsp); |
|
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575 else |
| 789 | 576 err = ENOENT; |
|
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|
577 if (err) |
| 789 | 578 goto out; |
|
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579 |
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580 err = dsl_dataset_hold_ref(*dsp, tag); |
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581 |
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|
582 /* we may be looking for a snapshot */ |
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583 if (err == 0 && snapname != NULL) { |
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584 dsl_dataset_t *ds = NULL; |
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585 |
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586 if (*snapname++ != '@') { |
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587 dsl_dataset_rele(*dsp, tag); |
| 789 | 588 err = ENOENT; |
| 589 goto out; | |
| 590 } | |
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591 |
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592 dprintf("looking for snapshot '%s'\n", snapname); |
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593 err = dsl_dataset_snap_lookup(*dsp, snapname, &obj); |
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594 if (err == 0) |
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595 err = dsl_dataset_get_ref(dp, obj, tag, &ds); |
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596 dsl_dataset_rele(*dsp, tag); |
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597 |
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598 ASSERT3U((err == 0), ==, (ds != NULL)); |
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599 |
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600 if (ds) { |
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601 mutex_enter(&ds->ds_lock); |
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602 if (ds->ds_snapname[0] == 0) |
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603 (void) strlcpy(ds->ds_snapname, snapname, |
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604 sizeof (ds->ds_snapname)); |
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605 mutex_exit(&ds->ds_lock); |
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606 err = dsl_dataset_hold_ref(ds, tag); |
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607 *dsp = err ? NULL : ds; |
| 789 | 608 } |
| 609 } | |
| 610 out: | |
| 611 rw_exit(&dp->dp_config_rwlock); | |
| 612 dsl_dir_close(dd, FTAG); | |
| 613 return (err); | |
| 614 } | |
| 615 | |
| 616 int | |
|
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617 dsl_dataset_own(const char *name, int flags, void *owner, dsl_dataset_t **dsp) |
| 789 | 618 { |
|
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619 int err = dsl_dataset_hold(name, owner, dsp); |
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620 if (err) |
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621 return (err); |
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622 if ((*dsp)->ds_phys->ds_num_children > 0 && |
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623 !DS_MODE_IS_READONLY(flags)) { |
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624 dsl_dataset_rele(*dsp, owner); |
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625 return (EROFS); |
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626 } |
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627 if (!dsl_dataset_tryown(*dsp, DS_MODE_IS_INCONSISTENT(flags), owner)) { |
|
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628 dsl_dataset_rele(*dsp, owner); |
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629 return (EBUSY); |
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630 } |
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|
631 return (0); |
| 789 | 632 } |
| 633 | |
| 634 void | |
| 635 dsl_dataset_name(dsl_dataset_t *ds, char *name) | |
| 636 { | |
| 637 if (ds == NULL) { | |
| 638 (void) strcpy(name, "mos"); | |
| 639 } else { | |
| 640 dsl_dir_name(ds->ds_dir, name); | |
| 1544 | 641 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 642 if (ds->ds_snapname[0]) { |
| 643 (void) strcat(name, "@"); | |
|
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|
644 /* |
|
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|
645 * We use a "recursive" mutex so that we |
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646 * can call dprintf_ds() with ds_lock held. |
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|
647 */ |
| 789 | 648 if (!MUTEX_HELD(&ds->ds_lock)) { |
| 649 mutex_enter(&ds->ds_lock); | |
| 650 (void) strcat(name, ds->ds_snapname); | |
| 651 mutex_exit(&ds->ds_lock); | |
| 652 } else { | |
| 653 (void) strcat(name, ds->ds_snapname); | |
| 654 } | |
| 655 } | |
| 656 } | |
| 657 } | |
| 658 | |
|
3978
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|
659 static int |
|
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|
660 dsl_dataset_namelen(dsl_dataset_t *ds) |
|
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|
661 { |
|
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|
662 int result; |
|
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|
663 |
|
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|
664 if (ds == NULL) { |
|
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|
665 result = 3; /* "mos" */ |
|
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|
666 } else { |
|
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|
667 result = dsl_dir_namelen(ds->ds_dir); |
|
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|
668 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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|
669 if (ds->ds_snapname[0]) { |
|
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|
670 ++result; /* adding one for the @-sign */ |
|
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|
671 if (!MUTEX_HELD(&ds->ds_lock)) { |
|
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|
672 mutex_enter(&ds->ds_lock); |
|
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|
673 result += strlen(ds->ds_snapname); |
|
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|
674 mutex_exit(&ds->ds_lock); |
|
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|
675 } else { |
|
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|
676 result += strlen(ds->ds_snapname); |
|
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|
677 } |
|
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|
678 } |
|
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|
679 } |
|
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|
680 |
|
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|
681 return (result); |
|
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|
682 } |
|
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|
683 |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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|
684 void |
|
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|
685 dsl_dataset_drop_ref(dsl_dataset_t *ds, void *tag) |
| 789 | 686 { |
| 1544 | 687 dmu_buf_rele(ds->ds_dbuf, tag); |
| 789 | 688 } |
| 689 | |
| 690 void | |
|
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|
691 dsl_dataset_rele(dsl_dataset_t *ds, void *tag) |
| 5367 | 692 { |
|
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|
693 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) { |
|
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|
694 rw_exit(&ds->ds_rwlock); |
|
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|
695 } |
|
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|
696 dsl_dataset_drop_ref(ds, tag); |
|
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|
697 } |
|
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|
698 |
|
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|
699 void |
|
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|
700 dsl_dataset_disown(dsl_dataset_t *ds, void *owner) |
|
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|
701 { |
|
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|
702 ASSERT((ds->ds_owner == owner && ds->ds_dbuf) || |
|
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|
703 (DSL_DATASET_IS_DESTROYED(ds) && ds->ds_dbuf == NULL)); |
|
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|
704 |
| 5367 | 705 mutex_enter(&ds->ds_lock); |
|
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|
706 ds->ds_owner = NULL; |
|
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|
707 if (RW_WRITE_HELD(&ds->ds_rwlock)) { |
|
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|
708 rw_exit(&ds->ds_rwlock); |
|
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|
709 cv_broadcast(&ds->ds_exclusive_cv); |
|
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|
710 } |
| 5367 | 711 mutex_exit(&ds->ds_lock); |
|
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|
712 if (ds->ds_dbuf) |
|
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|
713 dsl_dataset_drop_ref(ds, owner); |
|
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|
714 else |
|
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|
715 dsl_dataset_evict(ds->ds_dbuf, ds); |
| 5367 | 716 } |
| 717 | |
| 718 boolean_t | |
|
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|
719 dsl_dataset_tryown(dsl_dataset_t *ds, boolean_t inconsistentok, void *owner) |
| 5367 | 720 { |
|
6689
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|
721 boolean_t gotit = FALSE; |
|
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|
722 |
| 5367 | 723 mutex_enter(&ds->ds_lock); |
|
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|
724 if (ds->ds_owner == NULL && |
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725 (!DS_IS_INCONSISTENT(ds) || inconsistentok)) { |
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726 ds->ds_owner = owner; |
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727 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) |
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728 rw_exit(&ds->ds_rwlock); |
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729 gotit = TRUE; |
| 5367 | 730 } |
| 731 mutex_exit(&ds->ds_lock); | |
|
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732 return (gotit); |
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733 } |
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734 |
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735 void |
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736 dsl_dataset_make_exclusive(dsl_dataset_t *ds, void *owner) |
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737 { |
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738 ASSERT3P(owner, ==, ds->ds_owner); |
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739 if (!RW_WRITE_HELD(&ds->ds_rwlock)) |
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740 rw_enter(&ds->ds_rwlock, RW_WRITER); |
| 5367 | 741 } |
| 742 | |
| 2199 | 743 uint64_t |
|
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744 dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin, |
|
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745 uint64_t flags, dmu_tx_t *tx) |
| 789 | 746 { |
| 5367 | 747 dsl_pool_t *dp = dd->dd_pool; |
| 789 | 748 dmu_buf_t *dbuf; |
| 749 dsl_dataset_phys_t *dsphys; | |
| 5367 | 750 uint64_t dsobj; |
| 789 | 751 objset_t *mos = dp->dp_meta_objset; |
| 752 | |
|
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753 if (origin == NULL) |
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754 origin = dp->dp_origin_snap; |
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755 |
| 5367 | 756 ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp); |
| 757 ASSERT(origin == NULL || origin->ds_phys->ds_num_children > 0); | |
| 789 | 758 ASSERT(dmu_tx_is_syncing(tx)); |
| 5367 | 759 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0); |
| 789 | 760 |
|
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761 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
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762 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 763 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 764 dmu_buf_will_dirty(dbuf, tx); |
| 765 dsphys = dbuf->db_data; | |
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766 bzero(dsphys, sizeof (dsl_dataset_phys_t)); |
| 789 | 767 dsphys->ds_dir_obj = dd->dd_object; |
|
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768 dsphys->ds_flags = flags; |
| 789 | 769 dsphys->ds_fsid_guid = unique_create(); |
| 770 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 771 sizeof (dsphys->ds_guid)); | |
| 772 dsphys->ds_snapnames_zapobj = | |
|
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773 zap_create_norm(mos, U8_TEXTPREP_TOUPPER, DMU_OT_DSL_DS_SNAP_MAP, |
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774 DMU_OT_NONE, 0, tx); |
| 789 | 775 dsphys->ds_creation_time = gethrestime_sec(); |
|
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776 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg; |
| 789 | 777 dsphys->ds_deadlist_obj = |
| 778 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
|
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|
779 |
| 5367 | 780 if (origin) { |
| 781 dsphys->ds_prev_snap_obj = origin->ds_object; | |
| 789 | 782 dsphys->ds_prev_snap_txg = |
| 5367 | 783 origin->ds_phys->ds_creation_txg; |
| 789 | 784 dsphys->ds_used_bytes = |
| 5367 | 785 origin->ds_phys->ds_used_bytes; |
| 789 | 786 dsphys->ds_compressed_bytes = |
| 5367 | 787 origin->ds_phys->ds_compressed_bytes; |
| 789 | 788 dsphys->ds_uncompressed_bytes = |
| 5367 | 789 origin->ds_phys->ds_uncompressed_bytes; |
| 790 dsphys->ds_bp = origin->ds_phys->ds_bp; | |
|
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|
791 dsphys->ds_flags |= origin->ds_phys->ds_flags; |
| 789 | 792 |
| 5367 | 793 dmu_buf_will_dirty(origin->ds_dbuf, tx); |
| 794 origin->ds_phys->ds_num_children++; | |
| 789 | 795 |
|
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796 if (spa_version(dp->dp_spa) >= SPA_VERSION_NEXT_CLONES) { |
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797 if (origin->ds_phys->ds_next_clones_obj == 0) { |
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798 origin->ds_phys->ds_next_clones_obj = |
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799 zap_create(mos, |
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800 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx); |
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801 } |
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802 VERIFY(0 == zap_add_int(mos, |
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803 origin->ds_phys->ds_next_clones_obj, |
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804 dsobj, tx)); |
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805 } |
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|
806 |
| 789 | 807 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
| 5367 | 808 dd->dd_phys->dd_origin_obj = origin->ds_object; |
| 789 | 809 } |
|
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810 |
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811 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE) |
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812 dsphys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
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|
813 |
| 1544 | 814 dmu_buf_rele(dbuf, FTAG); |
| 789 | 815 |
| 816 dmu_buf_will_dirty(dd->dd_dbuf, tx); | |
| 817 dd->dd_phys->dd_head_dataset_obj = dsobj; | |
| 5367 | 818 |
| 819 return (dsobj); | |
| 820 } | |
| 821 | |
| 822 uint64_t | |
|
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823 dsl_dataset_create_sync(dsl_dir_t *pdd, const char *lastname, |
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824 dsl_dataset_t *origin, uint64_t flags, cred_t *cr, dmu_tx_t *tx) |
| 5367 | 825 { |
| 826 dsl_pool_t *dp = pdd->dd_pool; | |
| 827 uint64_t dsobj, ddobj; | |
| 828 dsl_dir_t *dd; | |
| 829 | |
| 830 ASSERT(lastname[0] != '@'); | |
| 831 | |
|
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832 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx); |
| 5367 | 833 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd)); |
| 834 | |
|
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835 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx); |
| 5367 | 836 |
| 837 dsl_deleg_set_create_perms(dd, tx, cr); | |
| 838 | |
| 789 | 839 dsl_dir_close(dd, FTAG); |
| 840 | |
| 2199 | 841 return (dsobj); |
| 842 } | |
| 843 | |
| 844 struct destroyarg { | |
| 845 dsl_sync_task_group_t *dstg; | |
| 846 char *snapname; | |
| 847 char *failed; | |
| 848 }; | |
| 849 | |
| 850 static int | |
| 851 dsl_snapshot_destroy_one(char *name, void *arg) | |
| 852 { | |
| 853 struct destroyarg *da = arg; | |
| 854 dsl_dataset_t *ds; | |
| 855 char *cp; | |
| 856 int err; | |
| 857 | |
| 858 (void) strcat(name, "@"); | |
| 859 (void) strcat(name, da->snapname); | |
|
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860 err = dsl_dataset_own(name, DS_MODE_READONLY | DS_MODE_INCONSISTENT, |
| 4007 | 861 da->dstg, &ds); |
| 2199 | 862 cp = strchr(name, '@'); |
| 863 *cp = '\0'; | |
|
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864 if (err == 0) { |
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|
865 dsl_dataset_make_exclusive(ds, da->dstg); |
|
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866 if (ds->ds_user_ptr) { |
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867 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
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868 ds->ds_user_ptr = NULL; |
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869 } |
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870 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check, |
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871 dsl_dataset_destroy_sync, ds, da->dstg, 0); |
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872 } else if (err == ENOENT) { |
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|
873 err = 0; |
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|
874 } else { |
| 2199 | 875 (void) strcpy(da->failed, name); |
| 876 } | |
|
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|
877 return (err); |
| 789 | 878 } |
| 879 | |
| 2199 | 880 /* |
| 881 * Destroy 'snapname' in all descendants of 'fsname'. | |
| 882 */ | |
| 883 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy | |
| 884 int | |
| 885 dsl_snapshots_destroy(char *fsname, char *snapname) | |
| 886 { | |
| 887 int err; | |
| 888 struct destroyarg da; | |
| 889 dsl_sync_task_t *dst; | |
| 890 spa_t *spa; | |
| 891 | |
|
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|
892 err = spa_open(fsname, &spa, FTAG); |
| 2199 | 893 if (err) |
| 894 return (err); | |
| 895 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); | |
| 896 da.snapname = snapname; | |
| 897 da.failed = fsname; | |
| 898 | |
| 899 err = dmu_objset_find(fsname, | |
| 2417 | 900 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN); |
| 2199 | 901 |
| 902 if (err == 0) | |
| 903 err = dsl_sync_task_group_wait(da.dstg); | |
| 904 | |
| 905 for (dst = list_head(&da.dstg->dstg_tasks); dst; | |
| 906 dst = list_next(&da.dstg->dstg_tasks, dst)) { | |
| 907 dsl_dataset_t *ds = dst->dst_arg1; | |
|
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|
908 /* |
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909 * Return the file system name that triggered the error |
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910 */ |
| 2199 | 911 if (dst->dst_err) { |
| 912 dsl_dataset_name(ds, fsname); | |
|
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913 *strchr(fsname, '@') = '\0'; |
| 2199 | 914 } |
|
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|
915 dsl_dataset_disown(ds, da.dstg); |
| 2199 | 916 } |
| 917 | |
| 918 dsl_sync_task_group_destroy(da.dstg); | |
| 919 spa_close(spa, FTAG); | |
| 920 return (err); | |
| 921 } | |
| 922 | |
| 5367 | 923 /* |
|
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924 * ds must be opened as OWNER. On return (whether successful or not), |
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925 * ds will be closed and caller can no longer dereference it. |
| 5367 | 926 */ |
| 789 | 927 int |
| 5367 | 928 dsl_dataset_destroy(dsl_dataset_t *ds, void *tag) |
| 789 | 929 { |
| 930 int err; | |
| 2199 | 931 dsl_sync_task_group_t *dstg; |
| 932 objset_t *os; | |
| 789 | 933 dsl_dir_t *dd; |
| 2199 | 934 uint64_t obj; |
| 935 | |
| 5367 | 936 if (dsl_dataset_is_snapshot(ds)) { |
| 2199 | 937 /* Destroying a snapshot is simpler */ |
|
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938 dsl_dataset_make_exclusive(ds, tag); |
|
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939 |
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940 if (ds->ds_user_ptr) { |
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941 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
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942 ds->ds_user_ptr = NULL; |
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943 } |
| 2199 | 944 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 945 dsl_dataset_destroy_check, dsl_dataset_destroy_sync, | |
| 5367 | 946 ds, tag, 0); |
| 947 goto out; | |
| 2199 | 948 } |
| 949 | |
| 950 dd = ds->ds_dir; | |
| 789 | 951 |
| 2199 | 952 /* |
| 953 * Check for errors and mark this ds as inconsistent, in | |
| 954 * case we crash while freeing the objects. | |
| 955 */ | |
| 956 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check, | |
| 957 dsl_dataset_destroy_begin_sync, ds, NULL, 0); | |
| 5367 | 958 if (err) |
| 959 goto out; | |
| 960 | |
| 961 err = dmu_objset_open_ds(ds, DMU_OST_ANY, &os); | |
| 962 if (err) | |
| 963 goto out; | |
| 2199 | 964 |
| 965 /* | |
| 966 * remove the objects in open context, so that we won't | |
| 967 * have too much to do in syncing context. | |
| 968 */ | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
969 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, |
|
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
970 ds->ds_phys->ds_prev_snap_txg)) { |
| 6992 | 971 /* |
| 972 * Ignore errors, if there is not enough disk space | |
| 973 * we will deal with it in dsl_dataset_destroy_sync(). | |
| 974 */ | |
| 975 (void) dmu_free_object(os, obj); | |
| 2199 | 976 } |
| 977 | |
| 978 dmu_objset_close(os); | |
| 979 if (err != ESRCH) | |
| 5367 | 980 goto out; |
| 2199 | 981 |
|
6975
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
982 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
983 err = dsl_dir_open_obj(dd->dd_pool, dd->dd_object, NULL, FTAG, &dd); |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
984 rw_exit(&dd->dd_pool->dp_config_rwlock); |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
985 |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
986 if (err) |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
987 goto out; |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
988 |
| 5367 | 989 if (ds->ds_user_ptr) { |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
990 /* |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
991 * We need to sync out all in-flight IO before we try |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
992 * to evict (the dataset evict func is trying to clear |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
993 * the cached entries for this dataset in the ARC). |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
994 */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
995 txg_wait_synced(dd->dd_pool, 0); |
| 5367 | 996 } |
| 997 | |
| 2199 | 998 /* |
| 999 * Blow away the dsl_dir + head dataset. | |
| 1000 */ | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1001 dsl_dataset_make_exclusive(ds, tag); |
|
6975
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
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parents:
6689
diff
changeset
|
1002 if (ds->ds_user_ptr) { |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
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parents:
6689
diff
changeset
|
1003 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
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parents:
6689
diff
changeset
|
1004 ds->ds_user_ptr = NULL; |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
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6689
diff
changeset
|
1005 } |
| 2199 | 1006 dstg = dsl_sync_task_group_create(ds->ds_dir->dd_pool); |
| 1007 dsl_sync_task_create(dstg, dsl_dataset_destroy_check, | |
| 5367 | 1008 dsl_dataset_destroy_sync, ds, tag, 0); |
| 2199 | 1009 dsl_sync_task_create(dstg, dsl_dir_destroy_check, |
| 1010 dsl_dir_destroy_sync, dd, FTAG, 0); | |
| 1011 err = dsl_sync_task_group_wait(dstg); | |
| 1012 dsl_sync_task_group_destroy(dstg); | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1013 /* if it is successful, dsl_dir_destroy_sync will close the dd */ |
| 5367 | 1014 if (err) |
| 2199 | 1015 dsl_dir_close(dd, FTAG); |
| 5367 | 1016 out: |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1017 dsl_dataset_disown(ds, tag); |
| 789 | 1018 return (err); |
| 1019 } | |
| 1020 | |
| 1021 int | |
| 5367 | 1022 dsl_dataset_rollback(dsl_dataset_t *ds, dmu_objset_type_t ost) |
| 789 | 1023 { |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1024 int err; |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1025 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1026 ASSERT(ds->ds_owner); |
| 5367 | 1027 |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1028 dsl_dataset_make_exclusive(ds, ds->ds_owner); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1029 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 2199 | 1030 dsl_dataset_rollback_check, dsl_dataset_rollback_sync, |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1031 ds, &ost, 0); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1032 /* drop exclusive access */ |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1033 mutex_enter(&ds->ds_lock); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1034 rw_exit(&ds->ds_rwlock); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1035 cv_broadcast(&ds->ds_exclusive_cv); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1036 mutex_exit(&ds->ds_lock); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7312
diff
changeset
|
1037 return (err); |
| 789 | 1038 } |
| 1039 | |
| 1040 void * | |
| 1041 dsl_dataset_set_user_ptr(dsl_dataset_t *ds, | |
| 1042 void *p, dsl_dataset_evict_func_t func) | |
| 1043 { | |
| 1044 void *old; | |
| 1045 | |
| 1046 mutex_enter(&ds->ds_lock); | |
| 1047 old = ds->ds_user_ptr; | |
| 1048 if (old == NULL) { | |
| 1049 ds->ds_user_ptr = p; | |
| 1050 ds->ds_user_evict_func = func; | |
| 1051 } | |
| 1052 mutex_exit(&ds->ds_lock); | |
| 1053 return (old); | |
| 1054 } | |
| 1055 | |
| 1056 void * | |
| 1057 dsl_dataset_get_user_ptr(dsl_dataset_t *ds) | |
| 1058 { | |
| 1059 return (ds->ds_user_ptr); | |
| 1060 } | |
| 1061 | |
| 1062 | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1063 blkptr_t * |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1064 dsl_dataset_get_blkptr(dsl_dataset_t *ds) |
| 789 | 1065 { |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1066 return (&ds->ds_phys->ds_bp); |
| 789 | 1067 } |
| 1068 | |
| 1069 void | |
| 1070 dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 1071 { | |
| 1072 ASSERT(dmu_tx_is_syncing(tx)); | |
| 1073 /* If it's the meta-objset, set dp_meta_rootbp */ | |
| 1074 if (ds == NULL) { | |
| 1075 tx->tx_pool->dp_meta_rootbp = *bp; | |
| 1076 } else { | |
| 1077 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1078 ds->ds_phys->ds_bp = *bp; | |
| 1079 } | |
| 1080 } | |
| 1081 | |
| 1082 spa_t * | |
| 1083 dsl_dataset_get_spa(dsl_dataset_t *ds) | |
| 1084 { | |
| 1085 return (ds->ds_dir->dd_pool->dp_spa); | |
| 1086 } | |
| 1087 | |
| 1088 void | |
| 1089 dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx) | |
| 1090 { | |
| 1091 dsl_pool_t *dp; | |
| 1092 | |
| 1093 if (ds == NULL) /* this is the meta-objset */ | |
| 1094 return; | |
| 1095 | |
| 1096 ASSERT(ds->ds_user_ptr != NULL); | |
| 2885 | 1097 |
| 1098 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 1099 panic("dirtying snapshot!"); | |
| 789 | 1100 |
| 1101 dp = ds->ds_dir->dd_pool; | |
| 1102 | |
| 1103 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) { | |
| 1104 /* up the hold count until we can be written out */ | |
| 1105 dmu_buf_add_ref(ds->ds_dbuf, ds); | |
| 1106 } | |
| 1107 } | |
| 1108 | |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1109 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1110 * The unique space in the head dataset can be calculated by subtracting |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1111 * the space used in the most recent snapshot, that is still being used |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1112 * in this file system, from the space currently in use. To figure out |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1113 * the space in the most recent snapshot still in use, we need to take |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1114 * the total space used in the snapshot and subtract out the space that |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1115 * has been freed up since the snapshot was taken. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1116 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1117 static void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1118 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1119 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1120 uint64_t mrs_used; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1121 uint64_t dlused, dlcomp, dluncomp; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1122 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1123 ASSERT(ds->ds_object == ds->ds_dir->dd_phys->dd_head_dataset_obj); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1124 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1125 if (ds->ds_phys->ds_prev_snap_obj != 0) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1126 mrs_used = ds->ds_prev->ds_phys->ds_used_bytes; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1127 else |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1128 mrs_used = 0; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1129 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1130 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1131 &dluncomp)); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1132 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1133 ASSERT3U(dlused, <=, mrs_used); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1134 ds->ds_phys->ds_unique_bytes = |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1135 ds->ds_phys->ds_used_bytes - (mrs_used - dlused); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1136 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1137 if (!DS_UNIQUE_IS_ACCURATE(ds) && |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1138 spa_version(ds->ds_dir->dd_pool->dp_spa) >= |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1139 SPA_VERSION_UNIQUE_ACCURATE) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1140 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1141 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1142 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1143 static uint64_t |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1144 dsl_dataset_unique(dsl_dataset_t *ds) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1145 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1146 if (!DS_UNIQUE_IS_ACCURATE(ds) && !dsl_dataset_is_snapshot(ds)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1147 dsl_dataset_recalc_head_uniq(ds); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1148 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1149 return (ds->ds_phys->ds_unique_bytes); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1150 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1151 |
| 789 | 1152 struct killarg { |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
1153 dsl_dataset_t *ds; |
| 789 | 1154 zio_t *zio; |
| 1155 dmu_tx_t *tx; | |
| 1156 }; | |
| 1157 | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
1158 /* ARGSUSED */ |
| 789 | 1159 static int |
|
7837
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1160 kill_blkptr(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb, |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1161 const dnode_phys_t *dnp, void *arg) |
| 789 | 1162 { |
| 1163 struct killarg *ka = arg; | |
|
7837
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1164 |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1165 if (bp == NULL) |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1166 return (0); |
| 789 | 1167 |
|
8746
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1168 if ((zb->zb_level == -1ULL && zb->zb_blkid != 0) || |
|
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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|
1169 (zb->zb_object != 0 && dnp == NULL)) { |
|
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|
1170 /* |
|
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1171 * It's a block in the intent log. It has no |
|
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|
1172 * accounting, so just free it. |
|
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|
1173 */ |
|
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|
1174 VERIFY3U(0, ==, dsl_free(ka->zio, ka->tx->tx_pool, |
|
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1175 ka->tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT)); |
|
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1176 } else { |
|
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1177 ASSERT3U(bp->blk_birth, >, ka->ds->ds_phys->ds_prev_snap_txg); |
|
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1178 (void) dsl_dataset_block_kill(ka->ds, bp, ka->zio, ka->tx); |
|
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1179 } |
|
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1180 |
| 789 | 1181 return (0); |
| 1182 } | |
| 1183 | |
| 1184 /* ARGSUSED */ | |
| 2199 | 1185 static int |
| 1186 dsl_dataset_rollback_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 789 | 1187 { |
| 2199 | 1188 dsl_dataset_t *ds = arg1; |
| 5367 | 1189 dmu_objset_type_t *ost = arg2; |
| 789 | 1190 |
| 2199 | 1191 /* |
| 5367 | 1192 * We can only roll back to emptyness if it is a ZPL objset. |
| 2199 | 1193 */ |
| 5367 | 1194 if (*ost != DMU_OST_ZFS && ds->ds_phys->ds_prev_snap_txg == 0) |
| 789 | 1195 return (EINVAL); |
| 1196 | |
| 2199 | 1197 /* |
| 1198 * This must not be a snapshot. | |
| 1199 */ | |
| 1200 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 1201 return (EINVAL); | |
| 789 | 1202 |
| 1203 /* | |
|
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1204 * If we made changes this txg, traverse_dataset won't find |
| 789 | 1205 * them. Try again. |
| 1206 */ | |
| 2199 | 1207 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 1208 return (EAGAIN); |
| 2199 | 1209 |
| 1210 return (0); | |
| 1211 } | |
| 789 | 1212 |
| 2199 | 1213 /* ARGSUSED */ |
| 1214 static void | |
| 4543 | 1215 dsl_dataset_rollback_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1216 { |
| 1217 dsl_dataset_t *ds = arg1; | |
| 5367 | 1218 dmu_objset_type_t *ost = arg2; |
| 2199 | 1219 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 789 | 1220 |
| 1221 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1222 | |
|
4967
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1223 if (ds->ds_user_ptr != NULL) { |
| 5367 | 1224 /* |
| 1225 * We need to make sure that the objset_impl_t is reopened after | |
| 1226 * we do the rollback, otherwise it will have the wrong | |
| 1227 * objset_phys_t. Normally this would happen when this | |
|
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1228 * dataset-open is closed, thus causing the |
| 5367 | 1229 * dataset to be immediately evicted. But when doing "zfs recv |
| 1230 * -F", we reopen the objset before that, so that there is no | |
| 1231 * window where the dataset is closed and inconsistent. | |
| 1232 */ | |
| 1233 ds->ds_user_evict_func(ds, ds->ds_user_ptr); | |
| 1234 ds->ds_user_ptr = NULL; | |
|
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1235 } |
|
4935
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1236 |
|
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1237 /* Transfer space that was freed since last snap back to the head. */ |
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1238 { |
|
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1239 uint64_t used; |
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1240 |
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1241 VERIFY(0 == bplist_space_birthrange(&ds->ds_deadlist, |
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1242 ds->ds_origin_txg, UINT64_MAX, &used)); |
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1243 dsl_dir_transfer_space(ds->ds_dir, used, |
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1244 DD_USED_SNAP, DD_USED_HEAD, tx); |
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1245 } |
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1246 |
| 789 | 1247 /* Zero out the deadlist. */ |
| 1248 bplist_close(&ds->ds_deadlist); | |
| 1249 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1250 ds->ds_phys->ds_deadlist_obj = | |
| 1251 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1252 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1253 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1254 |
| 1255 { | |
|
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1256 /* |
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1257 * Free blkptrs that we gave birth to - this covers |
|
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1258 * claimed but not played log blocks too. |
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1259 */ |
| 789 | 1260 zio_t *zio; |
| 1261 struct killarg ka; | |
| 1262 | |
| 1263 zio = zio_root(tx->tx_pool->dp_spa, NULL, NULL, | |
| 1264 ZIO_FLAG_MUSTSUCCEED); | |
|
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1265 ka.ds = ds; |
| 789 | 1266 ka.zio = zio; |
| 1267 ka.tx = tx; | |
|
7837
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|
1268 (void) traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg, |
|
001de5627df3
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|
1269 TRAVERSE_POST, kill_blkptr, &ka); |
| 789 | 1270 (void) zio_wait(zio); |
| 1271 } | |
| 1272 | |
|
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1273 ASSERT(!(ds->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) || |
|
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|
1274 ds->ds_phys->ds_unique_bytes == 0); |
|
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|
1275 |
|
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|
1276 if (ds->ds_prev && ds->ds_prev != ds->ds_dir->dd_pool->dp_origin_snap) { |
| 5367 | 1277 /* Change our contents to that of the prev snapshot */ |
|
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|
1278 |
| 5367 | 1279 ASSERT3U(ds->ds_prev->ds_object, ==, |
| 1280 ds->ds_phys->ds_prev_snap_obj); | |
|
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|
1281 ASSERT3U(ds->ds_phys->ds_used_bytes, <=, |
|
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|
1282 ds->ds_prev->ds_phys->ds_used_bytes); |
|
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|
1283 |
| 5367 | 1284 ds->ds_phys->ds_bp = ds->ds_prev->ds_phys->ds_bp; |
| 1285 ds->ds_phys->ds_used_bytes = | |
| 1286 ds->ds_prev->ds_phys->ds_used_bytes; | |
| 1287 ds->ds_phys->ds_compressed_bytes = | |
| 1288 ds->ds_prev->ds_phys->ds_compressed_bytes; | |
| 1289 ds->ds_phys->ds_uncompressed_bytes = | |
| 1290 ds->ds_prev->ds_phys->ds_uncompressed_bytes; | |
| 1291 ds->ds_phys->ds_flags = ds->ds_prev->ds_phys->ds_flags; | |
| 789 | 1292 |
| 5367 | 1293 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { |
| 1294 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 1295 ds->ds_prev->ds_phys->ds_unique_bytes = 0; | |
| 1296 } | |
| 1297 } else { | |
|
7046
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6343667 scrub/resilver has to start over when a snapshot is taken
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|
1298 objset_impl_t *osi; |
|
361307ae060d
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|
1299 |
|
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|
1300 ASSERT3U(ds->ds_phys->ds_used_bytes, ==, 0); |
|
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|
1301 ASSERT3U(ds->ds_phys->ds_compressed_bytes, ==, 0); |
|
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changeset
|
1302 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, ==, 0); |
|
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|
1303 |
| 5367 | 1304 bzero(&ds->ds_phys->ds_bp, sizeof (blkptr_t)); |
| 1305 ds->ds_phys->ds_flags = 0; | |
| 1306 ds->ds_phys->ds_unique_bytes = 0; | |
|
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|
1307 if (spa_version(ds->ds_dir->dd_pool->dp_spa) >= |
|
6d408f0a5fbd
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changeset
|
1308 SPA_VERSION_UNIQUE_ACCURATE) |
|
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|
1309 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
|
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|
1310 |
|
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|
1311 osi = dmu_objset_create_impl(ds->ds_dir->dd_pool->dp_spa, ds, |
| 5367 | 1312 &ds->ds_phys->ds_bp, *ost, tx); |
|
7046
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changeset
|
1313 #ifdef _KERNEL |
|
361307ae060d
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|
1314 zfs_create_fs(&osi->os, kcred, NULL, tx); |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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1315 #endif |
|
2532
752725c22841
6448999 panic: used == ds->ds_phys->ds_unique_bytes
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2417
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changeset
|
1316 } |
| 4543 | 1317 |
| 1318 spa_history_internal_log(LOG_DS_ROLLBACK, ds->ds_dir->dd_pool->dp_spa, | |
| 1319 tx, cr, "dataset = %llu", ds->ds_object); | |
| 789 | 1320 } |
| 1321 | |
|
1731
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1322 /* ARGSUSED */ |
|
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|
1323 static int |
| 2199 | 1324 dsl_dataset_destroy_begin_check(void *arg1, void *arg2, dmu_tx_t *tx) |
|
1731
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changeset
|
1325 { |
| 2199 | 1326 dsl_dataset_t *ds = arg1; |
| 5367 | 1327 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 1328 uint64_t count; | |
| 1329 int err; | |
|
1731
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|
1330 |
|
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6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
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|
1331 /* |
|
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6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
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|
1332 * Can't delete a head dataset if there are snapshots of it. |
|
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6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
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changeset
|
1333 * (Except if the only snapshots are from the branch we cloned |
|
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|
1334 * from.) |
|
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|
1335 */ |
|
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6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
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|
1336 if (ds->ds_prev != NULL && |
|
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|
1337 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
|
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|
1338 return (EINVAL); |
|
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1339 |
| 5367 | 1340 /* |
| 1341 * This is really a dsl_dir thing, but check it here so that | |
| 1342 * we'll be less likely to leave this dataset inconsistent & | |
| 1343 * nearly destroyed. | |
| 1344 */ | |
| 1345 err = zap_count(mos, ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count); | |
| 1346 if (err) | |
| 1347 return (err); | |
| 1348 if (count != 0) | |
| 1349 return (EEXIST); | |
| 1350 | |
|
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|
1351 return (0); |
|
1efa8b3d1296
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|
1352 } |
|
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|
1353 |
| 2199 | 1354 /* ARGSUSED */ |
| 1355 static void | |
| 4543 | 1356 dsl_dataset_destroy_begin_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1357 { |
| 2199 | 1358 dsl_dataset_t *ds = arg1; |
| 4543 | 1359 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
| 789 | 1360 |
| 2199 | 1361 /* Mark it as inconsistent on-disk, in case we crash */ |
| 1362 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1363 ds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT; | |
| 4543 | 1364 |
| 1365 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx, | |
| 1366 cr, "dataset = %llu", ds->ds_object); | |
| 2199 | 1367 } |
| 789 | 1368 |
| 2199 | 1369 /* ARGSUSED */ |
| 5367 | 1370 int |
| 2199 | 1371 dsl_dataset_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 1372 { | |
| 1373 dsl_dataset_t *ds = arg1; | |
| 789 | 1374 |
|
6689
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1375 /* we have an owner hold, so noone else can destroy us */ |
|
47572a2f5e73
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|
1376 ASSERT(!DSL_DATASET_IS_DESTROYED(ds)); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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1377 |
| 789 | 1378 /* Can't delete a branch point. */ |
| 2199 | 1379 if (ds->ds_phys->ds_num_children > 1) |
| 1380 return (EEXIST); | |
| 789 | 1381 |
| 1382 /* | |
| 1383 * Can't delete a head dataset if there are snapshots of it. | |
| 1384 * (Except if the only snapshots are from the branch we cloned | |
| 1385 * from.) | |
| 1386 */ | |
| 1387 if (ds->ds_prev != NULL && | |
| 2199 | 1388 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
| 789 | 1389 return (EINVAL); |
| 1390 | |
| 1391 /* | |
| 1392 * If we made changes this txg, traverse_dsl_dataset won't find | |
| 1393 * them. Try again. | |
| 1394 */ | |
| 2199 | 1395 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 1396 return (EAGAIN); |
| 2199 | 1397 |
| 1398 /* XXX we should do some i/o error checking... */ | |
| 1399 return (0); | |
| 1400 } | |
| 1401 | |
|
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1402 struct refsarg { |
|
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1403 kmutex_t lock; |
|
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1404 boolean_t gone; |
|
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1405 kcondvar_t cv; |
|
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1406 }; |
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1407 |
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1408 /* ARGSUSED */ |
|
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1409 static void |
|
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1410 dsl_dataset_refs_gone(dmu_buf_t *db, void *argv) |
|
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1411 { |
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1412 struct refsarg *arg = argv; |
|
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1413 |
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1414 mutex_enter(&arg->lock); |
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1415 arg->gone = TRUE; |
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1416 cv_signal(&arg->cv); |
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1417 mutex_exit(&arg->lock); |
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1418 } |
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1419 |
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1420 static void |
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1421 dsl_dataset_drain_refs(dsl_dataset_t *ds, void *tag) |
|
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1422 { |
|
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1423 struct refsarg arg; |
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1424 |
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|
1425 mutex_init(&arg.lock, NULL, MUTEX_DEFAULT, NULL); |
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1426 cv_init(&arg.cv, NULL, CV_DEFAULT, NULL); |
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1427 arg.gone = FALSE; |
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1428 (void) dmu_buf_update_user(ds->ds_dbuf, ds, &arg, &ds->ds_phys, |
|
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1429 dsl_dataset_refs_gone); |
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1430 dmu_buf_rele(ds->ds_dbuf, tag); |
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1431 mutex_enter(&arg.lock); |
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1432 while (!arg.gone) |
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1433 cv_wait(&arg.cv, &arg.lock); |
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1434 ASSERT(arg.gone); |
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|
1435 mutex_exit(&arg.lock); |
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|
1436 ds->ds_dbuf = NULL; |
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1437 ds->ds_phys = NULL; |
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1438 mutex_destroy(&arg.lock); |
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1439 cv_destroy(&arg.cv); |
|
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1440 } |
|
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1441 |
| 5367 | 1442 void |
| 4543 | 1443 dsl_dataset_destroy_sync(void *arg1, void *tag, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1444 { |
| 1445 dsl_dataset_t *ds = arg1; | |
| 1446 zio_t *zio; | |
| 1447 int err; | |
| 1448 int after_branch_point = FALSE; | |
| 1449 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 1450 objset_t *mos = dp->dp_meta_objset; | |
| 1451 dsl_dataset_t *ds_prev = NULL; | |
| 1452 uint64_t obj; | |
| 1453 | |
|
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1454 ASSERT(ds->ds_owner); |
| 2199 | 1455 ASSERT3U(ds->ds_phys->ds_num_children, <=, 1); |
| 1456 ASSERT(ds->ds_prev == NULL || | |
| 1457 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object); | |
| 1458 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg); | |
| 1459 | |
|
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1460 /* signal any waiters that this dataset is going away */ |
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1461 mutex_enter(&ds->ds_lock); |
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1462 ds->ds_owner = dsl_reaper; |
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1463 cv_broadcast(&ds->ds_exclusive_cv); |
|
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1464 mutex_exit(&ds->ds_lock); |
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1465 |
|
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1466 /* Remove our reservation */ |
|
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1467 if (ds->ds_reserved != 0) { |
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1468 uint64_t val = 0; |
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1469 dsl_dataset_set_reservation_sync(ds, &val, cr, tx); |
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1470 ASSERT3U(ds->ds_reserved, ==, 0); |
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1471 } |
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1472 |
| 2199 | 1473 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 1474 | |
|
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1475 dsl_pool_ds_destroyed(ds, tx); |
|
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1476 |
| 2199 | 1477 obj = ds->ds_object; |
| 789 | 1478 |
| 1479 if (ds->ds_phys->ds_prev_snap_obj != 0) { | |
| 1480 if (ds->ds_prev) { | |
| 1481 ds_prev = ds->ds_prev; | |
| 1482 } else { | |
|
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1483 VERIFY(0 == dsl_dataset_hold_obj(dp, |
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1484 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev)); |
| 789 | 1485 } |
| 1486 after_branch_point = | |
| 1487 (ds_prev->ds_phys->ds_next_snap_obj != obj); | |
| 1488 | |
| 1489 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx); | |
| 1490 if (after_branch_point && | |
|
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1491 ds_prev->ds_phys->ds_next_clones_obj != 0) { |
|
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1492 VERIFY(0 == zap_remove_int(mos, |
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1493 ds_prev->ds_phys->ds_next_clones_obj, obj, tx)); |
|
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1494 if (ds->ds_phys->ds_next_snap_obj != 0) { |
|
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1495 VERIFY(0 == zap_add_int(mos, |
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1496 ds_prev->ds_phys->ds_next_clones_obj, |
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1497 ds->ds_phys->ds_next_snap_obj, tx)); |
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1498 } |
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1499 } |
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1500 if (after_branch_point && |
| 789 | 1501 ds->ds_phys->ds_next_snap_obj == 0) { |
| 1502 /* This clone is toast. */ | |
| 1503 ASSERT(ds_prev->ds_phys->ds_num_children > 1); | |
| 1504 ds_prev->ds_phys->ds_num_children--; | |
| 1505 } else if (!after_branch_point) { | |
| 1506 ds_prev->ds_phys->ds_next_snap_obj = | |
| 1507 ds->ds_phys->ds_next_snap_obj; | |
| 1508 } | |
| 1509 } | |
| 1510 | |
| 1511 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); | |
| 1512 | |
| 1513 if (ds->ds_phys->ds_next_snap_obj != 0) { | |
| 2199 | 1514 blkptr_t bp; |
| 789 | 1515 dsl_dataset_t *ds_next; |
| 1516 uint64_t itor = 0; | |
|
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1517 uint64_t old_unique; |
|
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1518 int64_t used = 0, compressed = 0, uncompressed = 0; |
| 789 | 1519 |
|
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1520 VERIFY(0 == dsl_dataset_hold_obj(dp, |
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1521 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next)); |
| 789 | 1522 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj); |
| 1523 | |
|
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1524 old_unique = dsl_dataset_unique(ds_next); |
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1525 |
| 789 | 1526 dmu_buf_will_dirty(ds_next->ds_dbuf, tx); |
| 1527 ds_next->ds_phys->ds_prev_snap_obj = | |
| 1528 ds->ds_phys->ds_prev_snap_obj; | |
| 1529 ds_next->ds_phys->ds_prev_snap_txg = | |
| 1530 ds->ds_phys->ds_prev_snap_txg; | |
| 1531 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, | |
| 1532 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0); | |
| 1533 | |
| 1534 /* | |
| 1535 * Transfer to our deadlist (which will become next's | |
| 1536 * new deadlist) any entries from next's current | |
| 1537 * deadlist which were born before prev, and free the | |
| 1538 * other entries. | |
| 1539 * | |
| 1540 * XXX we're doing this long task with the config lock held | |
| 1541 */ | |
|
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1542 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) { |
| 789 | 1543 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) { |
| 1544 | 1544 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, |
| 1545 &bp, tx)); | |
| 789 | 1546 if (ds_prev && !after_branch_point && |
| 1547 bp.blk_birth > | |
| 1548 ds_prev->ds_phys->ds_prev_snap_txg) { | |
| 1549 ds_prev->ds_phys->ds_unique_bytes += | |
| 2082 | 1550 bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1551 } |
| 1552 } else { | |
| 2082 | 1553 used += bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1554 compressed += BP_GET_PSIZE(&bp); |
| 1555 uncompressed += BP_GET_UCSIZE(&bp); | |
| 1556 /* XXX check return value? */ | |
|
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1557 (void) dsl_free(zio, dp, tx->tx_txg, |
| 789 | 1558 &bp, NULL, NULL, ARC_NOWAIT); |
| 1559 } | |
| 1560 } | |
| 1561 | |
|
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1562 ASSERT3U(used, ==, ds->ds_phys->ds_unique_bytes); |
|
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1563 |
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1564 /* change snapused */ |
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1565 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP, |
|
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1566 -used, -compressed, -uncompressed, tx); |
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|
1567 |
| 789 | 1568 /* free next's deadlist */ |
| 1569 bplist_close(&ds_next->ds_deadlist); | |
| 1570 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx); | |
| 1571 | |
| 1572 /* set next's deadlist to our deadlist */ | |
|
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|
1573 bplist_close(&ds->ds_deadlist); |
| 789 | 1574 ds_next->ds_phys->ds_deadlist_obj = |
| 1575 ds->ds_phys->ds_deadlist_obj; | |
| 1544 | 1576 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos, |
| 1577 ds_next->ds_phys->ds_deadlist_obj)); | |
| 789 | 1578 ds->ds_phys->ds_deadlist_obj = 0; |
| 1579 | |
| 1580 if (ds_next->ds_phys->ds_next_snap_obj != 0) { | |
| 1581 /* | |
| 1582 * Update next's unique to include blocks which | |
| 1583 * were previously shared by only this snapshot | |
| 1584 * and it. Those blocks will be born after the | |
| 1585 * prev snap and before this snap, and will have | |
| 1586 * died after the next snap and before the one | |
| 1587 * after that (ie. be on the snap after next's | |
| 1588 * deadlist). | |
| 1589 * | |
| 1590 * XXX we're doing this long task with the | |
| 1591 * config lock held | |
| 1592 */ | |
| 1593 dsl_dataset_t *ds_after_next; | |
|
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1594 uint64_t space; |
| 789 | 1595 |
|
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|
1596 VERIFY(0 == dsl_dataset_hold_obj(dp, |
|
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|
1597 ds_next->ds_phys->ds_next_snap_obj, |
|
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|
1598 FTAG, &ds_after_next)); |
|
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|
1599 |
|
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1600 VERIFY(0 == |
|
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|
1601 bplist_space_birthrange(&ds_after_next->ds_deadlist, |
|
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|
1602 ds->ds_phys->ds_prev_snap_txg, |
|
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|
1603 ds->ds_phys->ds_creation_txg, &space)); |
|
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1604 ds_next->ds_phys->ds_unique_bytes += space; |
| 789 | 1605 |
|
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|
1606 dsl_dataset_rele(ds_after_next, FTAG); |
| 789 | 1607 ASSERT3P(ds_next->ds_prev, ==, NULL); |
| 1608 } else { | |
| 1609 ASSERT3P(ds_next->ds_prev, ==, ds); | |
|
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|
1610 dsl_dataset_drop_ref(ds_next->ds_prev, ds_next); |
|
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|
1611 ds_next->ds_prev = NULL; |
| 789 | 1612 if (ds_prev) { |
|
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|
1613 VERIFY(0 == dsl_dataset_get_ref(dp, |
|
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|
1614 ds->ds_phys->ds_prev_snap_obj, |
|
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|
1615 ds_next, &ds_next->ds_prev)); |
| 789 | 1616 } |
|
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1617 |
|
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1618 dsl_dataset_recalc_head_uniq(ds_next); |
|
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|
1619 |
|
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|
1620 /* |
|
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1621 * Reduce the amount of our unconsmed refreservation |
|
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|
1622 * being charged to our parent by the amount of |
|
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|
1623 * new unique data we have gained. |
|
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|
1624 */ |
|
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|
1625 if (old_unique < ds_next->ds_reserved) { |
|
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|
1626 int64_t mrsdelta; |
|
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|
1627 uint64_t new_unique = |
|
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|
1628 ds_next->ds_phys->ds_unique_bytes; |
|
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|
1629 |
|
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|
1630 ASSERT(old_unique <= new_unique); |
|
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|
1631 mrsdelta = MIN(new_unique - old_unique, |
|
111aa1baa84a
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|
1632 ds_next->ds_reserved - old_unique); |
|
7390
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|
1633 dsl_dir_diduse_space(ds->ds_dir, |
|
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|
1634 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx); |
|
5378
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|
1635 } |
| 789 | 1636 } |
|
6689
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
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|
1637 dsl_dataset_rele(ds_next, FTAG); |
| 789 | 1638 } else { |
| 1639 /* | |
| 1640 * There's no next snapshot, so this is a head dataset. | |
| 1641 * Destroy the deadlist. Unless it's a clone, the | |
| 1642 * deadlist should be empty. (If it's a clone, it's | |
| 1643 * safe to ignore the deadlist contents.) | |
| 1644 */ | |
| 1645 struct killarg ka; | |
| 1646 | |
| 1647 ASSERT(after_branch_point || bplist_empty(&ds->ds_deadlist)); | |
| 1648 bplist_close(&ds->ds_deadlist); | |
| 1649 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1650 ds->ds_phys->ds_deadlist_obj = 0; | |
| 1651 | |
| 1652 /* | |
| 1653 * Free everything that we point to (that's born after | |
| 1654 * the previous snapshot, if we are a clone) | |
| 1655 * | |
|
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|
1656 * NB: this should be very quick, because we already |
|
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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|
1657 * freed all the objects in open context. |
| 789 | 1658 */ |
|
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|
1659 ka.ds = ds; |
| 789 | 1660 ka.zio = zio; |
| 1661 ka.tx = tx; | |
|
7837
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1662 err = traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg, |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1663 TRAVERSE_POST, kill_blkptr, &ka); |
| 789 | 1664 ASSERT3U(err, ==, 0); |
|
7390
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|
1665 ASSERT(spa_version(dp->dp_spa) < SPA_VERSION_UNIQUE_ACCURATE || |
|
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7385
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|
1666 ds->ds_phys->ds_unique_bytes == 0); |
| 789 | 1667 } |
| 1668 | |
| 1669 err = zio_wait(zio); | |
| 1670 ASSERT3U(err, ==, 0); | |
| 1671 | |
|
6689
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|
1672 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == ds->ds_object) { |
|
47572a2f5e73
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6643
diff
changeset
|
1673 /* Erase the link in the dir */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
1674 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
1675 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
1676 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0); |
| 789 | 1677 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx); |
| 1678 ASSERT(err == 0); | |
| 1679 } else { | |
| 1680 /* remove from snapshot namespace */ | |
| 1681 dsl_dataset_t *ds_head; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
1682 ASSERT(ds->ds_phys->ds_snapnames_zapobj == 0); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
1683 VERIFY(0 == dsl_dataset_hold_obj(dp, |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
1684 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &ds_head)); |
|
2207
47efcb3433a7
6439370 assertion failures possible in dsl_dataset_destroy_sync()
ahrens
parents:
2199
diff
changeset
|
1685 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 1686 #ifdef ZFS_DEBUG |
| 1687 { | |
| 1688 uint64_t val; | |
|
6492
903545192033
6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents:
6047
diff
changeset
|
1689 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
1690 err = dsl_dataset_snap_lookup(ds_head, |
|
6492
903545192033
6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents:
6047
diff
changeset
|
1691 ds->ds_snapname, &val); |
| 789 | 1692 ASSERT3U(err, ==, 0); |
| 1693 ASSERT3U(val, ==, obj); | |
| 1694 } | |
| 1695 #endif | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1696 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx); |
| 789 | 1697 ASSERT(err == 0); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
1698 dsl_dataset_rele(ds_head, FTAG); |
| 789 | 1699 } |
| 1700 | |
| 1701 if (ds_prev && ds->ds_prev != ds_prev) | |
|
6689
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
1702 dsl_dataset_rele(ds_prev, FTAG); |
| 789 | 1703 |
| 5094 | 1704 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx); |
| 4543 | 1705 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx, |
| 1706 cr, "dataset = %llu", ds->ds_object); | |
| 1707 | |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1708 if (ds->ds_phys->ds_next_clones_obj != 0) { |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1709 uint64_t count; |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1710 ASSERT(0 == zap_count(mos, |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1711 ds->ds_phys->ds_next_clones_obj, &count) && count == 0); |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1712 VERIFY(0 == dmu_object_free(mos, |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1713 ds->ds_phys->ds_next_clones_obj, tx)); |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
1714 } |
|
7390
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|
1715 if (ds->ds_phys->ds_props_obj != 0) |
|
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|
1716 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_props_obj, tx)); |
|
6689
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6643
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|
1717 dsl_dir_close(ds->ds_dir, ds); |
|
47572a2f5e73
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6643
diff
changeset
|
1718 ds->ds_dir = NULL; |
|
47572a2f5e73
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6643
diff
changeset
|
1719 dsl_dataset_drain_refs(ds, tag); |
| 2199 | 1720 VERIFY(0 == dmu_object_free(mos, obj, tx)); |
| 1721 } | |
| 1722 | |
|
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|
1723 static int |
|
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|
1724 dsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, dmu_tx_t *tx) |
|
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PSARC 2007/555 zfs fs-only quotas and reservations
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|
1725 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
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|
1726 uint64_t asize; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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|
1727 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
1728 if (!dmu_tx_is_syncing(tx)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
1729 return (0); |
|
111aa1baa84a
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diff
changeset
|
1730 |
|
111aa1baa84a
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|
1731 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
1732 * If there's an fs-only reservation, any blocks that might become |
|
111aa1baa84a
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|
1733 * owned by the snapshot dataset must be accommodated by space |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
1734 * outside of the reservation. |
|
111aa1baa84a
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diff
changeset
|
1735 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
1736 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved); |
|
111aa1baa84a
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diff
changeset
|
1737 if (asize > dsl_dir_space_available(ds->ds_dir, NULL, 0, FALSE)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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5367
diff
changeset
|
1738 return (ENOSPC); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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5367
diff
changeset
|
1739 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
1740 /* |
|
111aa1baa84a
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diff
changeset
|
1741 * Propogate any reserved space for this snapshot to other |
|
111aa1baa84a
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diff
changeset
|
1742 * snapshot checks in this sync group. |
|
111aa1baa84a
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diff
changeset
|
1743 */ |
|
111aa1baa84a
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diff
changeset
|
1744 if (asize > 0) |
|
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|
1745 dsl_dir_willuse_space(ds->ds_dir, asize, tx); |
|
111aa1baa84a
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|
1746 |
|
111aa1baa84a
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diff
changeset
|
1747 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
1748 } |
|
111aa1baa84a
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|
1749 |
| 2199 | 1750 /* ARGSUSED */ |
| 1751 int | |
| 1752 dsl_dataset_snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 1753 { | |
| 5367 | 1754 dsl_dataset_t *ds = arg1; |
| 2199 | 1755 const char *snapname = arg2; |
| 1756 int err; | |
| 1757 uint64_t value; | |
| 789 | 1758 |
| 1759 /* | |
| 2199 | 1760 * We don't allow multiple snapshots of the same txg. If there |
| 1761 * is already one, try again. | |
| 1762 */ | |
| 1763 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg) | |
| 1764 return (EAGAIN); | |
| 1765 | |
| 1766 /* | |
| 1767 * Check for conflicting name snapshot name. | |
| 789 | 1768 */ |
|
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1769 err = dsl_dataset_snap_lookup(ds, snapname, &value); |
| 2199 | 1770 if (err == 0) |
| 1771 return (EEXIST); | |
| 1772 if (err != ENOENT) | |
| 1773 return (err); | |
| 789 | 1774 |
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1775 /* |
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1776 * Check that the dataset's name is not too long. Name consists |
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1777 * of the dataset's length + 1 for the @-sign + snapshot name's length |
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1778 */ |
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1779 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN) |
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1780 return (ENAMETOOLONG); |
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1781 |
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1782 err = dsl_dataset_snapshot_reserve_space(ds, tx); |
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1783 if (err) |
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1784 return (err); |
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1785 |
| 2199 | 1786 ds->ds_trysnap_txg = tx->tx_txg; |
| 789 | 1787 return (0); |
| 1788 } | |
| 1789 | |
| 2199 | 1790 void |
| 4543 | 1791 dsl_dataset_snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1792 { |
| 5367 | 1793 dsl_dataset_t *ds = arg1; |
| 2199 | 1794 const char *snapname = arg2; |
| 1795 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 789 | 1796 dmu_buf_t *dbuf; |
| 1797 dsl_dataset_phys_t *dsphys; | |
|
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1798 uint64_t dsobj, crtxg; |
| 789 | 1799 objset_t *mos = dp->dp_meta_objset; |
| 1800 int err; | |
| 1801 | |
| 2199 | 1802 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 789 | 1803 |
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1804 /* |
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1805 * The origin's ds_creation_txg has to be < TXG_INITIAL |
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1806 */ |
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1807 if (strcmp(snapname, ORIGIN_DIR_NAME) == 0) |
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1808 crtxg = 1; |
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1809 else |
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1810 crtxg = tx->tx_txg; |
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1811 |
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1812 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
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1813 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 1814 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 1815 dmu_buf_will_dirty(dbuf, tx); |
| 1816 dsphys = dbuf->db_data; | |
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1817 bzero(dsphys, sizeof (dsl_dataset_phys_t)); |
| 2199 | 1818 dsphys->ds_dir_obj = ds->ds_dir->dd_object; |
| 789 | 1819 dsphys->ds_fsid_guid = unique_create(); |
| 1820 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 1821 sizeof (dsphys->ds_guid)); | |
| 1822 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj; | |
| 1823 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg; | |
| 1824 dsphys->ds_next_snap_obj = ds->ds_object; | |
| 1825 dsphys->ds_num_children = 1; | |
| 1826 dsphys->ds_creation_time = gethrestime_sec(); | |
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1827 dsphys->ds_creation_txg = crtxg; |
| 789 | 1828 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj; |
| 1829 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes; | |
| 1830 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes; | |
| 1831 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes; | |
| 2082 | 1832 dsphys->ds_flags = ds->ds_phys->ds_flags; |
| 789 | 1833 dsphys->ds_bp = ds->ds_phys->ds_bp; |
| 1544 | 1834 dmu_buf_rele(dbuf, FTAG); |
| 789 | 1835 |
| 2199 | 1836 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0); |
| 1837 if (ds->ds_prev) { | |
|
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1838 uint64_t next_clones_obj = |
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1839 ds->ds_prev->ds_phys->ds_next_clones_obj; |
| 2199 | 1840 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj == |
| 789 | 1841 ds->ds_object || |
| 2199 | 1842 ds->ds_prev->ds_phys->ds_num_children > 1); |
| 1843 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { | |
| 1844 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 789 | 1845 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, |
| 2199 | 1846 ds->ds_prev->ds_phys->ds_creation_txg); |
| 1847 ds->ds_prev->ds_phys->ds_next_snap_obj = dsobj; | |
|
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1848 } else if (next_clones_obj != 0) { |
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1849 VERIFY3U(0, ==, zap_remove_int(mos, |
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1850 next_clones_obj, dsphys->ds_next_snap_obj, tx)); |
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1851 VERIFY3U(0, ==, zap_add_int(mos, |
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1852 next_clones_obj, dsobj, tx)); |
| 789 | 1853 } |
| 1854 } | |
| 1855 | |
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1856 /* |
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1857 * If we have a reference-reservation on this dataset, we will |
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1858 * need to increase the amount of refreservation being charged |
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1859 * since our unique space is going to zero. |
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1860 */ |
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1861 if (ds->ds_reserved) { |
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1862 int64_t add = MIN(dsl_dataset_unique(ds), ds->ds_reserved); |
|
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1863 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, |
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1864 add, 0, 0, tx); |
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1865 } |
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1866 |
| 789 | 1867 bplist_close(&ds->ds_deadlist); |
| 1868 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
|
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1869 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg); |
| 789 | 1870 ds->ds_phys->ds_prev_snap_obj = dsobj; |
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1871 ds->ds_phys->ds_prev_snap_txg = crtxg; |
| 789 | 1872 ds->ds_phys->ds_unique_bytes = 0; |
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1873 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE) |
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1874 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
| 789 | 1875 ds->ds_phys->ds_deadlist_obj = |
| 1876 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1877 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1878 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1879 |
| 1880 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj); | |
| 1881 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj, | |
| 1882 snapname, 8, 1, &dsobj, tx); | |
| 1883 ASSERT(err == 0); | |
| 1884 | |
| 1885 if (ds->ds_prev) | |
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1886 dsl_dataset_drop_ref(ds->ds_prev, ds); |
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1887 VERIFY(0 == dsl_dataset_get_ref(dp, |
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1888 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev)); |
| 4543 | 1889 |
|
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1890 dsl_pool_ds_snapshotted(ds, tx); |
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1891 |
| 4543 | 1892 spa_history_internal_log(LOG_DS_SNAPSHOT, dp->dp_spa, tx, cr, |
|
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1893 "dataset = %llu", dsobj); |
| 789 | 1894 } |
| 1895 | |
| 1896 void | |
|
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1897 dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx) |
| 789 | 1898 { |
| 1899 ASSERT(dmu_tx_is_syncing(tx)); | |
| 1900 ASSERT(ds->ds_user_ptr != NULL); | |
| 1901 ASSERT(ds->ds_phys->ds_next_snap_obj == 0); | |
| 1902 | |
| 4787 | 1903 /* |
| 1904 * in case we had to change ds_fsid_guid when we opened it, | |
| 1905 * sync it out now. | |
| 1906 */ | |
| 1907 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1908 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid; | |
| 1909 | |
| 789 | 1910 dsl_dir_dirty(ds->ds_dir, tx); |
|
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1911 dmu_objset_sync(ds->ds_user_ptr, zio, tx); |
| 789 | 1912 } |
| 1913 | |
| 1914 void | |
| 2885 | 1915 dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv) |
| 789 | 1916 { |
|
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1917 uint64_t refd, avail, uobjs, aobjs; |
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1918 |
| 2885 | 1919 dsl_dir_stats(ds->ds_dir, nv); |
| 789 | 1920 |
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1921 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs); |
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1922 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_AVAILABLE, avail); |
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1923 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFERENCED, refd); |
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1924 |
| 2885 | 1925 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION, |
| 1926 ds->ds_phys->ds_creation_time); | |
| 1927 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG, | |
| 1928 ds->ds_phys->ds_creation_txg); | |
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1929 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA, |
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1930 ds->ds_quota); |
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1931 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION, |
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1932 ds->ds_reserved); |
|
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1933 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_GUID, |
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1934 ds->ds_phys->ds_guid); |
| 789 | 1935 |
| 1936 if (ds->ds_phys->ds_next_snap_obj) { | |
| 1937 /* | |
| 1938 * This is a snapshot; override the dd's space used with | |
| 2885 | 1939 * our unique space and compression ratio. |
| 789 | 1940 */ |
| 2885 | 1941 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED, |
| 1942 ds->ds_phys->ds_unique_bytes); | |
| 1943 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO, | |
| 1944 ds->ds_phys->ds_compressed_bytes == 0 ? 100 : | |
| 1945 (ds->ds_phys->ds_uncompressed_bytes * 100 / | |
| 1946 ds->ds_phys->ds_compressed_bytes)); | |
| 789 | 1947 } |
| 1948 } | |
| 1949 | |
| 2885 | 1950 void |
| 1951 dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat) | |
| 789 | 1952 { |
| 2885 | 1953 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg; |
| 1954 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT; | |
| 5367 | 1955 stat->dds_guid = ds->ds_phys->ds_guid; |
| 2885 | 1956 if (ds->ds_phys->ds_next_snap_obj) { |
| 1957 stat->dds_is_snapshot = B_TRUE; | |
| 1958 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1; | |
|
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1959 } else { |
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1960 stat->dds_is_snapshot = B_FALSE; |
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1961 stat->dds_num_clones = 0; |
| 2885 | 1962 } |
| 1963 | |
| 1964 /* clone origin is really a dsl_dir thing... */ | |
| 5446 | 1965 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); |
|
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1966 if (dsl_dir_is_clone(ds->ds_dir)) { |
| 2885 | 1967 dsl_dataset_t *ods; |
| 1968 | |
|
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1969 VERIFY(0 == dsl_dataset_get_ref(ds->ds_dir->dd_pool, |
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1970 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods)); |
| 5367 | 1971 dsl_dataset_name(ods, stat->dds_origin); |
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1972 dsl_dataset_drop_ref(ods, FTAG); |
|
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1973 } else { |
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1974 stat->dds_origin[0] = '\0'; |
| 2885 | 1975 } |
| 5446 | 1976 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); |
| 2885 | 1977 } |
| 1978 | |
| 1979 uint64_t | |
| 1980 dsl_dataset_fsid_guid(dsl_dataset_t *ds) | |
| 1981 { | |
| 4787 | 1982 return (ds->ds_fsid_guid); |
| 2885 | 1983 } |
| 1984 | |
| 1985 void | |
| 1986 dsl_dataset_space(dsl_dataset_t *ds, | |
| 1987 uint64_t *refdbytesp, uint64_t *availbytesp, | |
| 1988 uint64_t *usedobjsp, uint64_t *availobjsp) | |
| 1989 { | |
| 1990 *refdbytesp = ds->ds_phys->ds_used_bytes; | |
| 1991 *availbytesp = dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE); | |
|
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1992 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes) |
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1993 *availbytesp += ds->ds_reserved - ds->ds_phys->ds_unique_bytes; |
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1994 if (ds->ds_quota != 0) { |
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1995 /* |
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1996 * Adjust available bytes according to refquota |
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1997 */ |
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1998 if (*refdbytesp < ds->ds_quota) |
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1999 *availbytesp = MIN(*availbytesp, |
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2000 ds->ds_quota - *refdbytesp); |
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2001 else |
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2002 *availbytesp = 0; |
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2003 } |
| 2885 | 2004 *usedobjsp = ds->ds_phys->ds_bp.blk_fill; |
| 2005 *availobjsp = DN_MAX_OBJECT - *usedobjsp; | |
| 789 | 2006 } |
| 2007 | |
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2008 boolean_t |
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2009 dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds) |
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2010 { |
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2011 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
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2012 |
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2013 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || |
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2014 dsl_pool_sync_context(dp)); |
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2015 if (ds->ds_prev == NULL) |
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2016 return (B_FALSE); |
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2017 if (ds->ds_phys->ds_bp.blk_birth > |
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2018 ds->ds_prev->ds_phys->ds_creation_txg) |
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2019 return (B_TRUE); |
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2020 return (B_FALSE); |
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2021 } |
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2022 |
| 2199 | 2023 /* ARGSUSED */ |
| 789 | 2024 static int |
| 2199 | 2025 dsl_dataset_snapshot_rename_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 789 | 2026 { |
| 2199 | 2027 dsl_dataset_t *ds = arg1; |
| 2028 char *newsnapname = arg2; | |
| 2029 dsl_dir_t *dd = ds->ds_dir; | |
| 2030 dsl_dataset_t *hds; | |
| 2031 uint64_t val; | |
| 789 | 2032 int err; |
| 2033 | |
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2034 err = dsl_dataset_hold_obj(dd->dd_pool, |
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2035 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds); |
| 789 | 2036 if (err) |
| 2037 return (err); | |
| 2038 | |
| 2199 | 2039 /* new name better not be in use */ |
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2040 err = dsl_dataset_snap_lookup(hds, newsnapname, &val); |
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2041 dsl_dataset_rele(hds, FTAG); |
| 789 | 2042 |
| 2199 | 2043 if (err == 0) |
| 2044 err = EEXIST; | |
| 2045 else if (err == ENOENT) | |
| 2046 err = 0; | |
| 4007 | 2047 |
| 2048 /* dataset name + 1 for the "@" + the new snapshot name must fit */ | |
| 2049 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN) | |
| 2050 err = ENAMETOOLONG; | |
| 2051 | |
| 2199 | 2052 return (err); |
| 2053 } | |
| 789 | 2054 |
| 2199 | 2055 static void |
| 4543 | 2056 dsl_dataset_snapshot_rename_sync(void *arg1, void *arg2, |
| 2057 cred_t *cr, dmu_tx_t *tx) | |
| 2199 | 2058 { |
| 2059 dsl_dataset_t *ds = arg1; | |
| 4543 | 2060 const char *newsnapname = arg2; |
| 2199 | 2061 dsl_dir_t *dd = ds->ds_dir; |
| 2062 objset_t *mos = dd->dd_pool->dp_meta_objset; | |
| 2063 dsl_dataset_t *hds; | |
| 2064 int err; | |
| 789 | 2065 |
| 2199 | 2066 ASSERT(ds->ds_phys->ds_next_snap_obj != 0); |
| 789 | 2067 |
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2068 VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, |
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2069 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds)); |
| 789 | 2070 |
| 2199 | 2071 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
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2072 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx); |
| 789 | 2073 ASSERT3U(err, ==, 0); |
| 2199 | 2074 mutex_enter(&ds->ds_lock); |
| 2075 (void) strcpy(ds->ds_snapname, newsnapname); | |
| 2076 mutex_exit(&ds->ds_lock); | |
| 2077 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj, | |
| 2078 ds->ds_snapname, 8, 1, &ds->ds_object, tx); | |
| 789 | 2079 ASSERT3U(err, ==, 0); |
| 2080 | |
| 4543 | 2081 spa_history_internal_log(LOG_DS_RENAME, dd->dd_pool->dp_spa, tx, |
| 2082 cr, "dataset = %llu", ds->ds_object); | |
|
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2083 dsl_dataset_rele(hds, FTAG); |
| 789 | 2084 } |
| 2085 | |
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2086 struct renamesnaparg { |
| 4007 | 2087 dsl_sync_task_group_t *dstg; |
| 2088 char failed[MAXPATHLEN]; | |
| 2089 char *oldsnap; | |
| 2090 char *newsnap; | |
| 2091 }; | |
| 2092 | |
| 2093 static int | |
| 2094 dsl_snapshot_rename_one(char *name, void *arg) | |
| 2095 { | |
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2096 struct renamesnaparg *ra = arg; |
| 4007 | 2097 dsl_dataset_t *ds = NULL; |
| 2098 char *cp; | |
| 2099 int err; | |
| 2100 | |
| 2101 cp = name + strlen(name); | |
| 2102 *cp = '@'; | |
| 2103 (void) strcpy(cp + 1, ra->oldsnap); | |
| 4543 | 2104 |
| 2105 /* | |
| 2106 * For recursive snapshot renames the parent won't be changing | |
| 2107 * so we just pass name for both the to/from argument. | |
| 2108 */ | |
|
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2109 err = zfs_secpolicy_rename_perms(name, name, CRED()); |
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2110 if (err == ENOENT) { |
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2111 return (0); |
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2112 } else if (err) { |
| 4543 | 2113 (void) strcpy(ra->failed, name); |
| 2114 return (err); | |
| 2115 } | |
| 2116 | |
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2117 #ifdef _KERNEL |
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2118 /* |
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2119 * For all filesystems undergoing rename, we'll need to unmount it. |
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2120 */ |
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2121 (void) zfs_unmount_snap(name, NULL); |
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2122 #endif |
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2123 err = dsl_dataset_hold(name, ra->dstg, &ds); |
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2124 *cp = '\0'; |
| 4007 | 2125 if (err == ENOENT) { |
| 2126 return (0); | |
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2127 } else if (err) { |
| 4007 | 2128 (void) strcpy(ra->failed, name); |
| 2129 return (err); | |
| 2130 } | |
| 2131 | |
| 2132 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check, | |
| 2133 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0); | |
| 2134 | |
| 2135 return (0); | |
| 2136 } | |
| 2137 | |
| 2138 static int | |
| 2139 dsl_recursive_rename(char *oldname, const char *newname) | |
| 2140 { | |
| 2141 int err; | |
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2142 struct renamesnaparg *ra; |
| 4007 | 2143 dsl_sync_task_t *dst; |
| 2144 spa_t *spa; | |
| 2145 char *cp, *fsname = spa_strdup(oldname); | |
| 2146 int len = strlen(oldname); | |
| 2147 | |
| 2148 /* truncate the snapshot name to get the fsname */ | |
| 2149 cp = strchr(fsname, '@'); | |
| 2150 *cp = '\0'; | |
| 2151 | |
|
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2152 err = spa_open(fsname, &spa, FTAG); |
| 4007 | 2153 if (err) { |
| 2154 kmem_free(fsname, len + 1); | |
| 2155 return (err); | |
| 2156 } | |
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2157 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP); |
| 4007 | 2158 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); |
| 2159 | |
| 2160 ra->oldsnap = strchr(oldname, '@') + 1; | |
| 2161 ra->newsnap = strchr(newname, '@') + 1; | |
| 2162 *ra->failed = '\0'; | |
| 2163 | |
| 2164 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra, | |
| 2165 DS_FIND_CHILDREN); | |
| 2166 kmem_free(fsname, len + 1); | |
| 2167 | |
| 2168 if (err == 0) { | |
| 2169 err = dsl_sync_task_group_wait(ra->dstg); | |
| 2170 } | |
| 2171 | |
| 2172 for (dst = list_head(&ra->dstg->dstg_tasks); dst; | |
| 2173 dst = list_next(&ra->dstg->dstg_tasks, dst)) { | |
| 2174 dsl_dataset_t *ds = dst->dst_arg1; | |
| 2175 if (dst->dst_err) { | |
| 2176 dsl_dir_name(ds->ds_dir, ra->failed); | |
|
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2177 (void) strcat(ra->failed, "@"); |
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2178 (void) strcat(ra->failed, ra->newsnap); |
| 4007 | 2179 } |
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2180 dsl_dataset_rele(ds, ra->dstg); |
| 4007 | 2181 } |
| 2182 | |
| 4543 | 2183 if (err) |
| 2184 (void) strcpy(oldname, ra->failed); | |
| 4007 | 2185 |
| 2186 dsl_sync_task_group_destroy(ra->dstg); | |
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2187 kmem_free(ra, sizeof (struct renamesnaparg)); |
| 4007 | 2188 spa_close(spa, FTAG); |
| 2189 return (err); | |
| 2190 } | |
| 2191 | |
|
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2192 static int |
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2193 dsl_valid_rename(char *oldname, void *arg) |
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2194 { |
|
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2195 int delta = *(int *)arg; |
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2196 |
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2197 if (strlen(oldname) + delta >= MAXNAMELEN) |
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2198 return (ENAMETOOLONG); |
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2199 |
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2200 return (0); |
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2201 } |
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2202 |
| 789 | 2203 #pragma weak dmu_objset_rename = dsl_dataset_rename |
| 2204 int | |
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2205 dsl_dataset_rename(char *oldname, const char *newname, boolean_t recursive) |
| 789 | 2206 { |
| 2207 dsl_dir_t *dd; | |
| 2199 | 2208 dsl_dataset_t *ds; |
| 789 | 2209 const char *tail; |
| 2210 int err; | |
| 2211 | |
| 2199 | 2212 err = dsl_dir_open(oldname, FTAG, &dd, &tail); |
| 1544 | 2213 if (err) |
| 2214 return (err); | |
|
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2215 /* |
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2216 * If there are more than 2 references there may be holds |
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|
2217 * hanging around that haven't been cleared out yet. |
|
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|
2218 */ |
|
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|
2219 if (dmu_buf_refcount(dd->dd_dbuf) > 2) |
|
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|
2220 txg_wait_synced(dd->dd_pool, 0); |
| 789 | 2221 if (tail == NULL) { |
|
4569
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
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diff
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|
2222 int delta = strlen(newname) - strlen(oldname); |
|
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diff
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|
2223 |
|
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|
2224 /* if we're growing, validate child name lengths */ |
|
4569
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6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
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diff
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|
2225 if (delta > 0) |
|
e80d40447f27
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diff
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|
2226 err = dmu_objset_find(oldname, dsl_valid_rename, |
|
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diff
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|
2227 &delta, DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); |
|
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diff
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|
2228 |
|
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|
2229 if (!err) |
|
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diff
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|
2230 err = dsl_dir_rename(dd, newname); |
| 789 | 2231 dsl_dir_close(dd, FTAG); |
| 2232 return (err); | |
| 2233 } | |
| 2234 if (tail[0] != '@') { | |
| 2235 /* the name ended in a nonexistant component */ | |
| 2236 dsl_dir_close(dd, FTAG); | |
| 2237 return (ENOENT); | |
| 2238 } | |
| 2239 | |
| 2199 | 2240 dsl_dir_close(dd, FTAG); |
| 2241 | |
| 2242 /* new name must be snapshot in same filesystem */ | |
| 2243 tail = strchr(newname, '@'); | |
| 2244 if (tail == NULL) | |
| 2245 return (EINVAL); | |
| 2246 tail++; | |
| 2247 if (strncmp(oldname, newname, tail - newname) != 0) | |
| 2248 return (EXDEV); | |
| 789 | 2249 |
| 4007 | 2250 if (recursive) { |
| 2251 err = dsl_recursive_rename(oldname, newname); | |
| 2252 } else { | |
|
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|
2253 err = dsl_dataset_hold(oldname, FTAG, &ds); |
| 4007 | 2254 if (err) |
| 2255 return (err); | |
| 2199 | 2256 |
| 4007 | 2257 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 2258 dsl_dataset_snapshot_rename_check, | |
| 2259 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1); | |
| 2199 | 2260 |
|
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|
2261 dsl_dataset_rele(ds, FTAG); |
| 4007 | 2262 } |
| 2199 | 2263 |
| 789 | 2264 return (err); |
| 2265 } | |
| 2082 | 2266 |
|
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|
2267 struct promotenode { |
|
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|
2268 list_node_t link; |
|
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|
2269 dsl_dataset_t *ds; |
|
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|
2270 }; |
|
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|
2271 |
| 2199 | 2272 struct promotearg { |
|
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2273 list_t shared_snaps, origin_snaps, clone_snaps; |
|
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|
2274 dsl_dataset_t *origin_origin, *origin_head; |
|
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|
2275 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap; |
| 2199 | 2276 }; |
| 2277 | |
|
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2278 static int snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep); |
|
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|
2279 |
| 4543 | 2280 /* ARGSUSED */ |
| 2082 | 2281 static int |
| 2199 | 2282 dsl_dataset_promote_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 2082 | 2283 { |
| 2199 | 2284 dsl_dataset_t *hds = arg1; |
| 2285 struct promotearg *pa = arg2; | |
|
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|
2286 struct promotenode *snap = list_head(&pa->shared_snaps); |
|
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|
2287 dsl_dataset_t *origin_ds = snap->ds; |
|
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|
2288 int err; |
| 2199 | 2289 |
|
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|
2290 /* Check that it is a real clone */ |
|
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|
2291 if (!dsl_dir_is_clone(hds->ds_dir)) |
| 2082 | 2292 return (EINVAL); |
| 2293 | |
| 2199 | 2294 /* Since this is so expensive, don't do the preliminary check */ |
| 2295 if (!dmu_tx_is_syncing(tx)) | |
| 2296 return (0); | |
| 2297 | |
|
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|
2298 if (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE) |
|
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|
2299 return (EXDEV); |
| 2082 | 2300 |
| 5367 | 2301 /* compute origin's new unique space */ |
|
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|
2302 snap = list_tail(&pa->clone_snaps); |
|
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|
2303 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object); |
|
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|
2304 err = bplist_space_birthrange(&snap->ds->ds_deadlist, |
|
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|
2305 origin_ds->ds_phys->ds_prev_snap_txg, UINT64_MAX, &pa->unique); |
|
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|
2306 if (err) |
|
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|
2307 return (err); |
|
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|
2308 |
|
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|
2309 /* |
|
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|
2310 * Walk the snapshots that we are moving |
|
47572a2f5e73
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|
2311 * |
|
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|
2312 * Compute space to transfer. Consider the incremental changes |
|
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|
2313 * to used for each snapshot: |
|
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|
2314 * (my used) = (prev's used) + (blocks born) - (blocks killed) |
|
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|
2315 * So each snapshot gave birth to: |
|
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|
2316 * (blocks born) = (my used) - (prev's used) + (blocks killed) |
|
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|
2317 * So a sequence would look like: |
|
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|
2318 * (uN - u(N-1) + kN) + ... + (u1 - u0 + k1) + (u0 - 0 + k0) |
|
6689
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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|
2319 * Which simplifies to: |
|
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|
2320 * uN + kN + kN-1 + ... + k1 + k0 |
|
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diff
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|
2321 * Note however, if we stop before we reach the ORIGIN we get: |
|
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|
2322 * uN + kN + kN-1 + ... + kM - uM-1 |
|
6689
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|
2323 */ |
|
47572a2f5e73
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|
2324 pa->used = origin_ds->ds_phys->ds_used_bytes; |
|
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
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|
2325 pa->comp = origin_ds->ds_phys->ds_compressed_bytes; |
|
47572a2f5e73
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|
2326 pa->uncomp = origin_ds->ds_phys->ds_uncompressed_bytes; |
|
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|
2327 for (snap = list_head(&pa->shared_snaps); snap; |
|
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|
2328 snap = list_next(&pa->shared_snaps, snap)) { |
| 2082 | 2329 uint64_t val, dlused, dlcomp, dluncomp; |
|
6689
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|
2330 dsl_dataset_t *ds = snap->ds; |
| 2082 | 2331 |
| 2332 /* Check that the snapshot name does not conflict */ | |
|
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|
2333 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
6689
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|
2334 err = dsl_dataset_snap_lookup(hds, ds->ds_snapname, &val); |
|
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|
2335 if (err == 0) |
|
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|
2336 return (EEXIST); |
|
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|
2337 if (err != ENOENT) |
|
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|
2338 return (err); |
|
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|
2339 |
|
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|
2340 /* The very first snapshot does not have a deadlist */ |
|
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|
2341 if (ds->ds_phys->ds_prev_snap_obj == 0) |
|
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|
2342 continue; |
|
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|
2343 |
|
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|
2344 if (err = bplist_space(&ds->ds_deadlist, |
|
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|
2345 &dlused, &dlcomp, &dluncomp)) |
|
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|
2346 return (err); |
|
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|
2347 pa->used += dlused; |
|
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|
2348 pa->comp += dlcomp; |
|
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|
2349 pa->uncomp += dluncomp; |
|
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|
2350 } |
|
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|
2351 |
|
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|
2352 /* |
|
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|
2353 * If we are a clone of a clone then we never reached ORIGIN, |
|
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|
2354 * so we need to subtract out the clone origin's used space. |
|
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|
2355 */ |
|
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|
2356 if (pa->origin_origin) { |
|
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|
2357 pa->used -= pa->origin_origin->ds_phys->ds_used_bytes; |
|
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|
2358 pa->comp -= pa->origin_origin->ds_phys->ds_compressed_bytes; |
|
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|
2359 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes; |
| 2082 | 2360 } |
| 2361 | |
| 2362 /* Check that there is enough space here */ | |
|
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|
2363 err = dsl_dir_transfer_possible(origin_ds->ds_dir, hds->ds_dir, |
|
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|
2364 pa->used); |
|
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|
2365 if (err) |
|
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|
2366 return (err); |
|
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|
2367 |
|
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|
2368 /* |
|
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|
2369 * Compute the amounts of space that will be used by snapshots |
|
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|
2370 * after the promotion (for both origin and clone). For each, |
|
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diff
changeset
|
2371 * it is the amount of space that will be on all of their |
|
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2372 * deadlists (that was not born before their new origin). |
|
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|
2373 */ |
|
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|
2374 if (hds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) { |
|
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|
2375 uint64_t space; |
|
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|
2376 |
|
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|
2377 /* |
|
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|
2378 * Note, typically this will not be a clone of a clone, |
|
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|
2379 * so snap->ds->ds_origin_txg will be < TXG_INITIAL, so |
|
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diff
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|
2380 * these snaplist_space() -> bplist_space_birthrange() |
|
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|
2381 * calls will be fast because they do not have to |
|
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|
2382 * iterate over all bps. |
|
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|
2383 */ |
|
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|
2384 snap = list_head(&pa->origin_snaps); |
|
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|
2385 err = snaplist_space(&pa->shared_snaps, |
|
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|
2386 snap->ds->ds_origin_txg, &pa->cloneusedsnap); |
|
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|
2387 if (err) |
|
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changeset
|
2388 return (err); |
|
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|
2389 |
|
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|
2390 err = snaplist_space(&pa->clone_snaps, |
|
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|
2391 snap->ds->ds_origin_txg, &space); |
|
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|
2392 if (err) |
|
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changeset
|
2393 return (err); |
|
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changeset
|
2394 pa->cloneusedsnap += space; |
|
6689
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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|
2395 } |
|
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|
2396 if (origin_ds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) { |
|
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changeset
|
2397 err = snaplist_space(&pa->origin_snaps, |
|
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changeset
|
2398 origin_ds->ds_phys->ds_creation_txg, &pa->originusedsnap); |
|
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|
2399 if (err) |
|
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|
2400 return (err); |
|
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|
2401 } |
|
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|
2402 |
|
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|
2403 return (0); |
| 2199 | 2404 } |
| 2082 | 2405 |
| 2199 | 2406 static void |
| 4543 | 2407 dsl_dataset_promote_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 2408 { |
| 2409 dsl_dataset_t *hds = arg1; | |
| 2410 struct promotearg *pa = arg2; | |
|
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|
2411 struct promotenode *snap = list_head(&pa->shared_snaps); |
|
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|
2412 dsl_dataset_t *origin_ds = snap->ds; |
|
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|
2413 dsl_dataset_t *origin_head; |
| 2199 | 2414 dsl_dir_t *dd = hds->ds_dir; |
| 2415 dsl_pool_t *dp = hds->ds_dir->dd_pool; | |
| 5367 | 2416 dsl_dir_t *odd = NULL; |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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parents:
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diff
changeset
|
2417 uint64_t oldnext_obj; |
|
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changeset
|
2418 int64_t delta; |
| 2199 | 2419 |
| 2420 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE)); | |
| 2421 | |
|
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|
2422 snap = list_head(&pa->origin_snaps); |
|
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|
2423 origin_head = snap->ds; |
|
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|
2424 |
| 2417 | 2425 /* |
| 5367 | 2426 * We need to explicitly open odd, since origin_ds's dd will be |
| 2417 | 2427 * changing. |
| 2428 */ | |
| 5367 | 2429 VERIFY(0 == dsl_dir_open_obj(dp, origin_ds->ds_dir->dd_object, |
| 2430 NULL, FTAG, &odd)); | |
| 2082 | 2431 |
|
6689
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diff
changeset
|
2432 /* change origin's next snap */ |
|
47572a2f5e73
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diff
changeset
|
2433 dmu_buf_will_dirty(origin_ds->ds_dbuf, tx); |
|
7046
361307ae060d
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parents:
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changeset
|
2434 oldnext_obj = origin_ds->ds_phys->ds_next_snap_obj; |
|
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|
2435 snap = list_tail(&pa->clone_snaps); |
|
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|
2436 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object); |
|
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changeset
|
2437 origin_ds->ds_phys->ds_next_snap_obj = snap->ds->ds_object; |
|
6689
47572a2f5e73
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diff
changeset
|
2438 |
|
7046
361307ae060d
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parents:
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diff
changeset
|
2439 /* change the origin's next clone */ |
|
361307ae060d
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ahrens
parents:
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diff
changeset
|
2440 if (origin_ds->ds_phys->ds_next_clones_obj) { |
|
361307ae060d
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ahrens
parents:
6992
diff
changeset
|
2441 VERIFY3U(0, ==, zap_remove_int(dp->dp_meta_objset, |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
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diff
changeset
|
2442 origin_ds->ds_phys->ds_next_clones_obj, |
|
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|
2443 origin_ds->ds_phys->ds_next_snap_obj, tx)); |
|
7046
361307ae060d
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ahrens
parents:
6992
diff
changeset
|
2444 VERIFY3U(0, ==, zap_add_int(dp->dp_meta_objset, |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2445 origin_ds->ds_phys->ds_next_clones_obj, |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2446 oldnext_obj, tx)); |
|
361307ae060d
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ahrens
parents:
6992
diff
changeset
|
2447 } |
|
361307ae060d
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ahrens
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6992
diff
changeset
|
2448 |
|
6689
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changeset
|
2449 /* change origin */ |
|
47572a2f5e73
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parents:
6643
diff
changeset
|
2450 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
2451 ASSERT3U(dd->dd_phys->dd_origin_obj, ==, origin_ds->ds_object); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
2452 dd->dd_phys->dd_origin_obj = odd->dd_phys->dd_origin_obj; |
|
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changeset
|
2453 hds->ds_origin_txg = origin_head->ds_origin_txg; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
2454 dmu_buf_will_dirty(odd->dd_dbuf, tx); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
changeset
|
2455 odd->dd_phys->dd_origin_obj = origin_ds->ds_object; |
|
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changeset
|
2456 origin_head->ds_origin_txg = origin_ds->ds_phys->ds_creation_txg; |
|
6689
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6643
diff
changeset
|
2457 |
| 2082 | 2458 /* move snapshots to this dir */ |
|
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changeset
|
2459 for (snap = list_head(&pa->shared_snaps); snap; |
|
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changeset
|
2460 snap = list_next(&pa->shared_snaps, snap)) { |
|
6689
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
changeset
|
2461 dsl_dataset_t *ds = snap->ds; |
| 2082 | 2462 |
|
7237
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PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
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diff
changeset
|
2463 /* unregister props as dsl_dir is changing */ |
|
f47d41541b14
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ek110237
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diff
changeset
|
2464 if (ds->ds_user_ptr) { |
|
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
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changeset
|
2465 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
|
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|
2466 ds->ds_user_ptr = NULL; |
|
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|
2467 } |
| 2082 | 2468 /* move snap name entry */ |
|
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changeset
|
2469 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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changeset
|
2470 VERIFY(0 == dsl_dataset_snap_remove(origin_head, |
|
6689
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diff
changeset
|
2471 ds->ds_snapname, tx)); |
| 2199 | 2472 VERIFY(0 == zap_add(dp->dp_meta_objset, |
| 2082 | 2473 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname, |
| 2474 8, 1, &ds->ds_object, tx)); | |
| 2475 /* change containing dsl_dir */ | |
| 2476 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 5367 | 2477 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object); |
| 2082 | 2478 ds->ds_phys->ds_dir_obj = dd->dd_object; |
| 5367 | 2479 ASSERT3P(ds->ds_dir, ==, odd); |
| 2082 | 2480 dsl_dir_close(ds->ds_dir, ds); |
| 2199 | 2481 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object, |
| 2082 | 2482 NULL, ds, &ds->ds_dir)); |
| 2483 | |
| 2484 ASSERT3U(dsl_prop_numcb(ds), ==, 0); | |
|
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|
2485 } |
|
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changeset
|
2486 |
|
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changeset
|
2487 /* |
|
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changeset
|
2488 * Change space accounting. |
|
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changeset
|
2489 * Note, pa->*usedsnap and dd_used_breakdown[SNAP] will either |
|
6d408f0a5fbd
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changeset
|
2490 * both be valid, or both be 0 (resulting in delta == 0). This |
|
6d408f0a5fbd
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changeset
|
2491 * is true for each of {clone,origin} independently. |
|
6d408f0a5fbd
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changeset
|
2492 */ |
|
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|
2493 |
|
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changeset
|
2494 delta = pa->cloneusedsnap - |
|
6d408f0a5fbd
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7385
diff
changeset
|
2495 dd->dd_phys->dd_used_breakdown[DD_USED_SNAP]; |
|
6d408f0a5fbd
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changeset
|
2496 ASSERT3S(delta, >=, 0); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2497 ASSERT3U(pa->used, >=, delta); |
|
6d408f0a5fbd
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7385
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changeset
|
2498 dsl_dir_diduse_space(dd, DD_USED_SNAP, delta, 0, 0, tx); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2499 dsl_dir_diduse_space(dd, DD_USED_HEAD, |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2500 pa->used - delta, pa->comp, pa->uncomp, tx); |
|
6d408f0a5fbd
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diff
changeset
|
2501 |
|
6d408f0a5fbd
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changeset
|
2502 delta = pa->originusedsnap - |
|
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7385
diff
changeset
|
2503 odd->dd_phys->dd_used_breakdown[DD_USED_SNAP]; |
|
6d408f0a5fbd
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7385
diff
changeset
|
2504 ASSERT3S(delta, <=, 0); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2505 ASSERT3U(pa->used, >=, -delta); |
|
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changeset
|
2506 dsl_dir_diduse_space(odd, DD_USED_SNAP, delta, 0, 0, tx); |
|
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diff
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|
2507 dsl_dir_diduse_space(odd, DD_USED_HEAD, |
|
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|
2508 -pa->used - delta, -pa->comp, -pa->uncomp, tx); |
|
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|
2509 |
| 5367 | 2510 origin_ds->ds_phys->ds_unique_bytes = pa->unique; |
| 2082 | 2511 |
| 4543 | 2512 /* log history record */ |
| 2513 spa_history_internal_log(LOG_DS_PROMOTE, dd->dd_pool->dp_spa, tx, | |
|
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parents:
6643
diff
changeset
|
2514 cr, "dataset = %llu", hds->ds_object); |
| 4543 | 2515 |
| 5367 | 2516 dsl_dir_close(odd, FTAG); |
| 2082 | 2517 } |
| 2518 | |
|
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|
2519 static char *snaplist_tag = "snaplist"; |
|
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|
2520 /* |
|
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diff
changeset
|
2521 * Make a list of dsl_dataset_t's for the snapshots between first_obj |
|
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diff
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|
2522 * (exclusive) and last_obj (inclusive). The list will be in reverse |
|
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diff
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|
2523 * order (last_obj will be the list_head()). If first_obj == 0, do all |
|
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diff
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|
2524 * snapshots back to this dataset's origin. |
|
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|
2525 */ |
|
6d408f0a5fbd
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|
2526 static int |
|
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changeset
|
2527 snaplist_make(dsl_pool_t *dp, boolean_t own, |
|
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diff
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|
2528 uint64_t first_obj, uint64_t last_obj, list_t *l) |
|
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|
2529 { |
|
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diff
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|
2530 uint64_t obj = last_obj; |
|
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|
2531 |
|
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|
2532 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock)); |
|
6d408f0a5fbd
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|
2533 |
|
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changeset
|
2534 list_create(l, sizeof (struct promotenode), |
|
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diff
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|
2535 offsetof(struct promotenode, link)); |
|
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diff
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|
2536 |
|
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|
2537 while (obj != first_obj) { |
|
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diff
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|
2538 dsl_dataset_t *ds; |
|
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|
2539 struct promotenode *snap; |
|
6d408f0a5fbd
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|
2540 int err; |
|
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diff
changeset
|
2541 |
|
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|
2542 if (own) { |
|
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changeset
|
2543 err = dsl_dataset_own_obj(dp, obj, |
|
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|
2544 0, snaplist_tag, &ds); |
|
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|
2545 if (err == 0) |
|
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diff
changeset
|
2546 dsl_dataset_make_exclusive(ds, snaplist_tag); |
|
6d408f0a5fbd
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changeset
|
2547 } else { |
|
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diff
changeset
|
2548 err = dsl_dataset_hold_obj(dp, obj, snaplist_tag, &ds); |
|
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diff
changeset
|
2549 } |
|
6d408f0a5fbd
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diff
changeset
|
2550 if (err == ENOENT) { |
|
6d408f0a5fbd
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diff
changeset
|
2551 /* lost race with snapshot destroy */ |
|
6d408f0a5fbd
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diff
changeset
|
2552 struct promotenode *last = list_tail(l); |
|
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diff
changeset
|
2553 ASSERT(obj != last->ds->ds_phys->ds_prev_snap_obj); |
|
6d408f0a5fbd
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diff
changeset
|
2554 obj = last->ds->ds_phys->ds_prev_snap_obj; |
|
6d408f0a5fbd
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changeset
|
2555 continue; |
|
6d408f0a5fbd
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diff
changeset
|
2556 } else if (err) { |
|
6d408f0a5fbd
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7385
diff
changeset
|
2557 return (err); |
|
6d408f0a5fbd
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diff
changeset
|
2558 } |
|
6d408f0a5fbd
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|
2559 |
|
6d408f0a5fbd
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diff
changeset
|
2560 if (first_obj == 0) |
|
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diff
changeset
|
2561 first_obj = ds->ds_dir->dd_phys->dd_origin_obj; |
|
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diff
changeset
|
2562 |
|
6d408f0a5fbd
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diff
changeset
|
2563 snap = kmem_alloc(sizeof (struct promotenode), KM_SLEEP); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2564 snap->ds = ds; |
|
6d408f0a5fbd
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7385
diff
changeset
|
2565 list_insert_tail(l, snap); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2566 obj = ds->ds_phys->ds_prev_snap_obj; |
|
6d408f0a5fbd
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7385
diff
changeset
|
2567 } |
|
6d408f0a5fbd
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diff
changeset
|
2568 |
|
6d408f0a5fbd
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7385
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changeset
|
2569 return (0); |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2570 } |
|
6d408f0a5fbd
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diff
changeset
|
2571 |
|
6d408f0a5fbd
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changeset
|
2572 static int |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2573 snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep) |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2574 { |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2575 struct promotenode *snap; |
|
6d408f0a5fbd
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diff
changeset
|
2576 |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2577 *spacep = 0; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2578 for (snap = list_head(l); snap; snap = list_next(l, snap)) { |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2579 uint64_t used; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2580 int err = bplist_space_birthrange(&snap->ds->ds_deadlist, |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2581 mintxg, UINT64_MAX, &used); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2582 if (err) |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2583 return (err); |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2584 *spacep += used; |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2585 } |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2586 return (0); |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2587 } |
|
6d408f0a5fbd
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diff
changeset
|
2588 |
|
6d408f0a5fbd
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7385
diff
changeset
|
2589 static void |
|
6d408f0a5fbd
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7385
diff
changeset
|
2590 snaplist_destroy(list_t *l, boolean_t own) |
|
6d408f0a5fbd
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diff
changeset
|
2591 { |
|
6d408f0a5fbd
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diff
changeset
|
2592 struct promotenode *snap; |
|
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7385
diff
changeset
|
2593 |
|
8779
f164e0e90508
6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents:
8746
diff
changeset
|
2594 if (!l || !list_link_active(&l->list_head)) |
|
7390
6d408f0a5fbd
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diff
changeset
|
2595 return; |
|
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diff
changeset
|
2596 |
|
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changeset
|
2597 while ((snap = list_tail(l)) != NULL) { |
|
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diff
changeset
|
2598 list_remove(l, snap); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2599 if (own) |
|
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diff
changeset
|
2600 dsl_dataset_disown(snap->ds, snaplist_tag); |
|
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changeset
|
2601 else |
|
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diff
changeset
|
2602 dsl_dataset_rele(snap->ds, snaplist_tag); |
|
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changeset
|
2603 kmem_free(snap, sizeof (struct promotenode)); |
|
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changeset
|
2604 } |
|
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changeset
|
2605 list_destroy(l); |
|
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diff
changeset
|
2606 } |
|
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diff
changeset
|
2607 |
|
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diff
changeset
|
2608 /* |
|
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diff
changeset
|
2609 * Promote a clone. Nomenclature note: |
|
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7385
diff
changeset
|
2610 * "clone" or "cds": the original clone which is being promoted |
|
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diff
changeset
|
2611 * "origin" or "ods": the snapshot which is originally clone's origin |
|
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diff
changeset
|
2612 * "origin head" or "ohds": the dataset which is the head |
|
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diff
changeset
|
2613 * (filesystem/volume) for the origin |
|
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7385
diff
changeset
|
2614 * "origin origin": the origin of the origin's filesystem (typically |
|
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changeset
|
2615 * NULL, indicating that the clone is not a clone of a clone). |
|
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diff
changeset
|
2616 */ |
| 2082 | 2617 int |
| 2618 dsl_dataset_promote(const char *name) | |
| 2619 { | |
| 2620 dsl_dataset_t *ds; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2621 dsl_dir_t *dd; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2622 dsl_pool_t *dp; |
| 2082 | 2623 dmu_object_info_t doi; |
|
7390
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diff
changeset
|
2624 struct promotearg pa = { 0 }; |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2625 struct promotenode *snap; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2626 int err; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2627 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2628 err = dsl_dataset_hold(name, FTAG, &ds); |
| 2082 | 2629 if (err) |
| 2630 return (err); | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2631 dd = ds->ds_dir; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2632 dp = dd->dd_pool; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2633 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2634 err = dmu_object_info(dp->dp_meta_objset, |
| 2082 | 2635 ds->ds_phys->ds_snapnames_zapobj, &doi); |
| 2636 if (err) { | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2637 dsl_dataset_rele(ds, FTAG); |
| 2082 | 2638 return (err); |
| 2639 } | |
| 2640 | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2641 if (dsl_dataset_is_snapshot(ds) || dd->dd_phys->dd_origin_obj == 0) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2642 dsl_dataset_rele(ds, FTAG); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2643 return (EINVAL); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2644 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2645 |
| 2082 | 2646 /* |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2647 * We are going to inherit all the snapshots taken before our |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2648 * origin (i.e., our new origin will be our parent's origin). |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2649 * Take ownership of them so that we can rename them into our |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2650 * namespace. |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2651 */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2652 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2653 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2654 err = snaplist_make(dp, B_TRUE, 0, dd->dd_phys->dd_origin_obj, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2655 &pa.shared_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2656 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2657 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2658 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2659 err = snaplist_make(dp, B_FALSE, 0, ds->ds_object, &pa.clone_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2660 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2661 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2662 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2663 snap = list_head(&pa.shared_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2664 ASSERT3U(snap->ds->ds_object, ==, dd->dd_phys->dd_origin_obj); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2665 err = snaplist_make(dp, B_FALSE, dd->dd_phys->dd_origin_obj, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2666 snap->ds->ds_dir->dd_phys->dd_head_dataset_obj, &pa.origin_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2667 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2668 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2669 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2670 if (dsl_dir_is_clone(snap->ds->ds_dir)) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2671 err = dsl_dataset_own_obj(dp, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2672 snap->ds->ds_dir->dd_phys->dd_origin_obj, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2673 0, FTAG, &pa.origin_origin); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2674 if (err != 0) |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2675 goto out; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2676 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2677 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2678 out: |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2679 rw_exit(&dp->dp_config_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2680 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2681 /* |
| 2082 | 2682 * Add in 128x the snapnames zapobj size, since we will be moving |
| 2683 * a bunch of snapnames to the promoted ds, and dirtying their | |
| 2684 * bonus buffers. | |
| 2685 */ | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2686 if (err == 0) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2687 err = dsl_sync_task_do(dp, dsl_dataset_promote_check, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2688 dsl_dataset_promote_sync, ds, &pa, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2689 2 + 2 * doi.doi_physical_blks); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2690 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2691 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2692 snaplist_destroy(&pa.shared_snaps, B_TRUE); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2693 snaplist_destroy(&pa.clone_snaps, B_FALSE); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2694 snaplist_destroy(&pa.origin_snaps, B_FALSE); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2695 if (pa.origin_origin) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2696 dsl_dataset_disown(pa.origin_origin, FTAG); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2697 dsl_dataset_rele(ds, FTAG); |
| 2082 | 2698 return (err); |
| 2699 } | |
| 3912 | 2700 |
| 5367 | 2701 struct cloneswaparg { |
| 2702 dsl_dataset_t *cds; /* clone dataset */ | |
| 2703 dsl_dataset_t *ohds; /* origin's head dataset */ | |
| 2704 boolean_t force; | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2705 int64_t unused_refres_delta; /* change in unconsumed refreservation */ |
| 5367 | 2706 }; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2707 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2708 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2709 static int |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2710 dsl_dataset_clone_swap_check(void *arg1, void *arg2, dmu_tx_t *tx) |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2711 { |
| 5367 | 2712 struct cloneswaparg *csa = arg1; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2713 |
| 5367 | 2714 /* they should both be heads */ |
| 2715 if (dsl_dataset_is_snapshot(csa->cds) || | |
| 2716 dsl_dataset_is_snapshot(csa->ohds)) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2717 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2718 |
| 5367 | 2719 /* the branch point should be just before them */ |
| 2720 if (csa->cds->ds_prev != csa->ohds->ds_prev) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2721 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2722 |
| 5367 | 2723 /* cds should be the clone */ |
| 2724 if (csa->cds->ds_prev->ds_phys->ds_next_snap_obj != | |
| 2725 csa->ohds->ds_object) | |
| 2726 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2727 |
| 5367 | 2728 /* the clone should be a child of the origin */ |
| 2729 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir) | |
| 2730 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2731 |
| 5367 | 2732 /* ohds shouldn't be modified unless 'force' */ |
| 2733 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds)) | |
| 2734 return (ETXTBSY); | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2735 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2736 /* adjust amount of any unconsumed refreservation */ |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2737 csa->unused_refres_delta = |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2738 (int64_t)MIN(csa->ohds->ds_reserved, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2739 csa->ohds->ds_phys->ds_unique_bytes) - |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2740 (int64_t)MIN(csa->ohds->ds_reserved, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2741 csa->cds->ds_phys->ds_unique_bytes); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2742 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2743 if (csa->unused_refres_delta > 0 && |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2744 csa->unused_refres_delta > |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2745 dsl_dir_space_available(csa->ohds->ds_dir, NULL, 0, TRUE)) |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2746 return (ENOSPC); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2747 |
| 5367 | 2748 return (0); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2749 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2750 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2751 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2752 static void |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2753 dsl_dataset_clone_swap_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2754 { |
| 5367 | 2755 struct cloneswaparg *csa = arg1; |
| 2756 dsl_pool_t *dp = csa->cds->ds_dir->dd_pool; | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2757 |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2758 ASSERT(csa->cds->ds_reserved == 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2759 ASSERT(csa->cds->ds_quota == csa->ohds->ds_quota); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2760 |
| 5367 | 2761 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx); |
| 2762 dmu_buf_will_dirty(csa->ohds->ds_dbuf, tx); | |
| 2763 dmu_buf_will_dirty(csa->cds->ds_prev->ds_dbuf, tx); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2764 |
| 5367 | 2765 if (csa->cds->ds_user_ptr != NULL) { |
| 2766 csa->cds->ds_user_evict_func(csa->cds, csa->cds->ds_user_ptr); | |
| 2767 csa->cds->ds_user_ptr = NULL; | |
| 2768 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2769 |
| 5367 | 2770 if (csa->ohds->ds_user_ptr != NULL) { |
| 2771 csa->ohds->ds_user_evict_func(csa->ohds, | |
| 2772 csa->ohds->ds_user_ptr); | |
| 2773 csa->ohds->ds_user_ptr = NULL; | |
| 2774 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2775 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2776 /* reset origin's unique bytes */ |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2777 VERIFY(0 == bplist_space_birthrange(&csa->cds->ds_deadlist, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2778 csa->cds->ds_prev->ds_phys->ds_prev_snap_txg, UINT64_MAX, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2779 &csa->cds->ds_prev->ds_phys->ds_unique_bytes)); |
|
5326
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parents:
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diff
changeset
|
2780 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2781 /* swap blkptrs */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2782 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2783 blkptr_t tmp; |
| 5367 | 2784 tmp = csa->ohds->ds_phys->ds_bp; |
| 2785 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp; | |
| 2786 csa->cds->ds_phys->ds_bp = tmp; | |
|
5326
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parents:
5094
diff
changeset
|
2787 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2788 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2789 /* set dd_*_bytes */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2790 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2791 int64_t dused, dcomp, duncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2792 uint64_t cdl_used, cdl_comp, cdl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2793 uint64_t odl_used, odl_comp, odl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2794 |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2795 ASSERT3U(csa->cds->ds_dir->dd_phys-> |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
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parents:
7385
diff
changeset
|
2796 dd_used_breakdown[DD_USED_SNAP], ==, 0); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
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parents:
7385
diff
changeset
|
2797 |
| 5367 | 2798 VERIFY(0 == bplist_space(&csa->cds->ds_deadlist, &cdl_used, |
|
5326
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6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2799 &cdl_comp, &cdl_uncomp)); |
| 5367 | 2800 VERIFY(0 == bplist_space(&csa->ohds->ds_deadlist, &odl_used, |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
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5094
diff
changeset
|
2801 &odl_comp, &odl_uncomp)); |
|
7390
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PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
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diff
changeset
|
2802 |
| 5367 | 2803 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used - |
| 2804 (csa->ohds->ds_phys->ds_used_bytes + odl_used); | |
| 2805 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp - | |
| 2806 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp); | |
| 2807 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes + | |
| 2808 cdl_uncomp - | |
| 2809 (csa->ohds->ds_phys->ds_uncompressed_bytes + odl_uncomp); | |
|
5326
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parents:
5094
diff
changeset
|
2810 |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
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parents:
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diff
changeset
|
2811 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_HEAD, |
| 5367 | 2812 dused, dcomp, duncomp, tx); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2813 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD, |
| 5367 | 2814 -dused, -dcomp, -duncomp, tx); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2815 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2816 /* |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2817 * The difference in the space used by snapshots is the |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2818 * difference in snapshot space due to the head's |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2819 * deadlist (since that's the only thing that's |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2820 * changing that affects the snapused). |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2821 */ |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2822 VERIFY(0 == bplist_space_birthrange(&csa->cds->ds_deadlist, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2823 csa->ohds->ds_origin_txg, UINT64_MAX, &cdl_used)); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2824 VERIFY(0 == bplist_space_birthrange(&csa->ohds->ds_deadlist, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2825 csa->ohds->ds_origin_txg, UINT64_MAX, &odl_used)); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2826 dsl_dir_transfer_space(csa->ohds->ds_dir, cdl_used - odl_used, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2827 DD_USED_HEAD, DD_USED_SNAP, tx); |
| 5367 | 2828 } |
| 2829 | |
| 2830 #define SWITCH64(x, y) \ | |
| 2831 { \ | |
| 2832 uint64_t __tmp = (x); \ | |
| 2833 (x) = (y); \ | |
| 2834 (y) = __tmp; \ | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2835 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2836 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2837 /* swap ds_*_bytes */ |
| 5367 | 2838 SWITCH64(csa->ohds->ds_phys->ds_used_bytes, |
| 2839 csa->cds->ds_phys->ds_used_bytes); | |
| 2840 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes, | |
| 2841 csa->cds->ds_phys->ds_compressed_bytes); | |
| 2842 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes, | |
| 2843 csa->cds->ds_phys->ds_uncompressed_bytes); | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2844 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2845 csa->cds->ds_phys->ds_unique_bytes); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2846 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2847 /* apply any parent delta for change in unconsumed refreservation */ |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2848 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_REFRSRV, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2849 csa->unused_refres_delta, 0, 0, tx); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2850 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2851 /* swap deadlists */ |
| 5367 | 2852 bplist_close(&csa->cds->ds_deadlist); |
| 2853 bplist_close(&csa->ohds->ds_deadlist); | |
| 2854 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj, | |
| 2855 csa->cds->ds_phys->ds_deadlist_obj); | |
| 2856 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset, | |
| 2857 csa->cds->ds_phys->ds_deadlist_obj)); | |
| 2858 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset, | |
| 2859 csa->ohds->ds_phys->ds_deadlist_obj)); | |
|
7837
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
2860 |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
2861 dsl_pool_ds_clone_swapped(csa->ohds, csa->cds, tx); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2862 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2863 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2864 /* |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2865 * Swap 'clone' with its origin head file system. Used at the end |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2866 * of "online recv" to swizzle the file system to the new version. |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2867 */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2868 int |
| 5367 | 2869 dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head, |
| 2870 boolean_t force) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2871 { |
| 5367 | 2872 struct cloneswaparg csa; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2873 int error; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2874 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2875 ASSERT(clone->ds_owner); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2876 ASSERT(origin_head->ds_owner); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2877 retry: |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2878 /* Need exclusive access for the swap */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2879 rw_enter(&clone->ds_rwlock, RW_WRITER); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2880 if (!rw_tryenter(&origin_head->ds_rwlock, RW_WRITER)) { |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2881 rw_exit(&clone->ds_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2882 rw_enter(&origin_head->ds_rwlock, RW_WRITER); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2883 if (!rw_tryenter(&clone->ds_rwlock, RW_WRITER)) { |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2884 rw_exit(&origin_head->ds_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2885 goto retry; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2886 } |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2887 } |
| 5367 | 2888 csa.cds = clone; |
| 2889 csa.ohds = origin_head; | |
| 2890 csa.force = force; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2891 error = dsl_sync_task_do(clone->ds_dir->dd_pool, |
|
5326
6752aa2bd5bc
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ek110237
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5094
diff
changeset
|
2892 dsl_dataset_clone_swap_check, |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2893 dsl_dataset_clone_swap_sync, &csa, NULL, 9); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2894 return (error); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
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5094
diff
changeset
|
2895 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2896 |
| 3912 | 2897 /* |
| 2898 * Given a pool name and a dataset object number in that pool, | |
| 2899 * return the name of that dataset. | |
| 2900 */ | |
| 2901 int | |
| 2902 dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf) | |
| 2903 { | |
| 2904 spa_t *spa; | |
| 2905 dsl_pool_t *dp; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2906 dsl_dataset_t *ds; |
| 3912 | 2907 int error; |
| 2908 | |
| 2909 if ((error = spa_open(pname, &spa, FTAG)) != 0) | |
| 2910 return (error); | |
| 2911 dp = spa_get_dsl(spa); | |
| 2912 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2913 if ((error = dsl_dataset_hold_obj(dp, obj, FTAG, &ds)) == 0) { |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2914 dsl_dataset_name(ds, buf); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2915 dsl_dataset_rele(ds, FTAG); |
| 3912 | 2916 } |
| 2917 rw_exit(&dp->dp_config_rwlock); | |
| 2918 spa_close(spa, FTAG); | |
| 2919 | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
2920 return (error); |
| 3912 | 2921 } |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2922 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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5367
diff
changeset
|
2923 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2924 dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota, |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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parents:
6643
diff
changeset
|
2925 uint64_t asize, uint64_t inflight, uint64_t *used, uint64_t *ref_rsrv) |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2926 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2927 int error = 0; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2928 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2929 ASSERT3S(asize, >, 0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2930 |
|
5831
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2931 /* |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2932 * *ref_rsrv is the portion of asize that will come from any |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2933 * unconsumed refreservation space. |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2934 */ |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2935 *ref_rsrv = 0; |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2936 |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2937 mutex_enter(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2938 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2939 * Make a space adjustment for reserved bytes. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2940 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2941 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes) { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2942 ASSERT3U(*used, >=, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2943 ds->ds_reserved - ds->ds_phys->ds_unique_bytes); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2944 *used -= (ds->ds_reserved - ds->ds_phys->ds_unique_bytes); |
|
5831
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2945 *ref_rsrv = |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2946 asize - MIN(asize, parent_delta(ds, asize + inflight)); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2947 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2948 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2949 if (!check_quota || ds->ds_quota == 0) { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2950 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2951 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2952 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2953 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2954 * If they are requesting more space, and our current estimate |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2955 * is over quota, they get to try again unless the actual |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2956 * on-disk is over quota and there are no pending changes (which |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2957 * may free up space for us). |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2958 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2959 if (ds->ds_phys->ds_used_bytes + inflight >= ds->ds_quota) { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2960 if (inflight > 0 || ds->ds_phys->ds_used_bytes < ds->ds_quota) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2961 error = ERESTART; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2962 else |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2963 error = EDQUOT; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2964 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2965 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2966 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2967 return (error); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2968 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2969 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2970 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2971 static int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2972 dsl_dataset_set_quota_check(void *arg1, void *arg2, dmu_tx_t *tx) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2973 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2974 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2975 uint64_t *quotap = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2976 uint64_t new_quota = *quotap; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2977 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2978 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_REFQUOTA) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2979 return (ENOTSUP); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2980 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2981 if (new_quota == 0) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2982 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2983 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2984 if (new_quota < ds->ds_phys->ds_used_bytes || |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2985 new_quota < ds->ds_reserved) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2986 return (ENOSPC); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2987 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2988 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2989 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2990 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2991 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2992 void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2993 dsl_dataset_set_quota_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2994 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2995 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2996 uint64_t *quotap = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2997 uint64_t new_quota = *quotap; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2998 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2999 dmu_buf_will_dirty(ds->ds_dbuf, tx); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3000 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3001 ds->ds_quota = new_quota; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3002 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3003 dsl_prop_set_uint64_sync(ds->ds_dir, "refquota", new_quota, cr, tx); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3004 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3005 spa_history_internal_log(LOG_DS_REFQUOTA, ds->ds_dir->dd_pool->dp_spa, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3006 tx, cr, "%lld dataset = %llu ", |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3007 (longlong_t)new_quota, ds->ds_object); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3008 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3009 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3010 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3011 dsl_dataset_set_quota(const char *dsname, uint64_t quota) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3012 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3013 dsl_dataset_t *ds; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3014 int err; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3015 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3016 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3017 if (err) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3018 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3019 |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3020 if (quota != ds->ds_quota) { |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3021 /* |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3022 * If someone removes a file, then tries to set the quota, we |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3023 * want to make sure the file freeing takes effect. |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3024 */ |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3025 txg_wait_open(ds->ds_dir->dd_pool, 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3026 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3027 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3028 dsl_dataset_set_quota_check, dsl_dataset_set_quota_sync, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3029 ds, "a, 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3030 } |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3031 dsl_dataset_rele(ds, FTAG); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3032 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3033 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3034 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3035 static int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3036 dsl_dataset_set_reservation_check(void *arg1, void *arg2, dmu_tx_t *tx) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3037 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3038 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3039 uint64_t *reservationp = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3040 uint64_t new_reservation = *reservationp; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3041 uint64_t unique; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3042 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3043 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3044 SPA_VERSION_REFRESERVATION) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3045 return (ENOTSUP); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3046 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3047 if (dsl_dataset_is_snapshot(ds)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3048 return (EINVAL); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3049 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3050 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3051 * If we are doing the preliminary check in open context, the |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3052 * space estimates may be inaccurate. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3053 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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5367
diff
changeset
|
3054 if (!dmu_tx_is_syncing(tx)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3055 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3056 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3057 mutex_enter(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3058 unique = dsl_dataset_unique(ds); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3059 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3060 |
|
8525
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3061 if (MAX(unique, new_reservation) > MAX(unique, ds->ds_reserved)) { |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3062 uint64_t delta = MAX(unique, new_reservation) - |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3063 MAX(unique, ds->ds_reserved); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3064 |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3065 if (delta > dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE)) |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3066 return (ENOSPC); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3067 if (ds->ds_quota > 0 && |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3068 new_reservation > ds->ds_quota) |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3069 return (ENOSPC); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3070 } |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3071 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3072 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3073 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3074 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3075 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3076 static void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3077 dsl_dataset_set_reservation_sync(void *arg1, void *arg2, cred_t *cr, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3078 dmu_tx_t *tx) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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diff
changeset
|
3079 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
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diff
changeset
|
3080 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
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diff
changeset
|
3081 uint64_t *reservationp = arg2; |
|
111aa1baa84a
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ck153898
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diff
changeset
|
3082 uint64_t new_reservation = *reservationp; |
|
7595
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3083 uint64_t unique; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7525
diff
changeset
|
3084 int64_t delta; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7525
diff
changeset
|
3085 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7525
diff
changeset
|
3086 dmu_buf_will_dirty(ds->ds_dbuf, tx); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3087 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3088 mutex_enter(&ds->ds_dir->dd_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3089 mutex_enter(&ds->ds_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3090 unique = dsl_dataset_unique(ds); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3091 delta = MAX(0, (int64_t)(new_reservation - unique)) - |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3092 MAX(0, (int64_t)(ds->ds_reserved - unique)); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3093 ds->ds_reserved = new_reservation; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3094 mutex_exit(&ds->ds_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3095 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3096 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, delta, 0, 0, tx); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3097 mutex_exit(&ds->ds_dir->dd_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3098 dsl_prop_set_uint64_sync(ds->ds_dir, "refreservation", |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3099 new_reservation, cr, tx); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3100 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3101 spa_history_internal_log(LOG_DS_REFRESERV, |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3102 ds->ds_dir->dd_pool->dp_spa, tx, cr, "%lld dataset = %llu", |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3103 (longlong_t)new_reservation, ds->ds_object); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
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5367
diff
changeset
|
3104 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3105 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3106 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3107 dsl_dataset_set_reservation(const char *dsname, uint64_t reservation) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3108 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3109 dsl_dataset_t *ds; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3110 int err; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3111 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3112 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3113 if (err) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3114 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3115 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3116 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3117 dsl_dataset_set_reservation_check, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3118 dsl_dataset_set_reservation_sync, ds, &reservation, 0); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3119 dsl_dataset_rele(ds, FTAG); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3120 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3121 } |