Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 10204:83c3a84aecef
6760420 zfs unmount -f causes recv to fail
6759975 zplprops unavailable to examiner of in-progress receive
| author | Matthew Ahrens <Matthew.Ahrens@Sun.COM> |
|---|---|
| date | Wed, 29 Jul 2009 14:12:34 -0700 |
| parents | 2a588c9bb482 |
| children | c40d075fbca6 |
| 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 | |
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232 boolean_t |
| 1544 | 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); |
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265 mutex_destroy(&ds->ds_recvlock); |
| 4787 | 266 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 267 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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268 rw_destroy(&ds->ds_rwlock); |
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269 cv_destroy(&ds->ds_exclusive_cv); |
| 2856 | 270 |
| 789 | 271 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 272 } | |
| 273 | |
| 1544 | 274 static int |
| 789 | 275 dsl_dataset_get_snapname(dsl_dataset_t *ds) |
| 276 { | |
| 277 dsl_dataset_phys_t *headphys; | |
| 278 int err; | |
| 279 dmu_buf_t *headdbuf; | |
| 280 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 281 objset_t *mos = dp->dp_meta_objset; | |
| 282 | |
| 283 if (ds->ds_snapname[0]) | |
| 1544 | 284 return (0); |
| 789 | 285 if (ds->ds_phys->ds_next_snap_obj == 0) |
| 1544 | 286 return (0); |
| 789 | 287 |
| 1544 | 288 err = dmu_bonus_hold(mos, ds->ds_dir->dd_phys->dd_head_dataset_obj, |
| 289 FTAG, &headdbuf); | |
| 290 if (err) | |
| 291 return (err); | |
| 789 | 292 headphys = headdbuf->db_data; |
| 293 err = zap_value_search(dp->dp_meta_objset, | |
| 4577 | 294 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname); |
| 1544 | 295 dmu_buf_rele(headdbuf, FTAG); |
| 296 return (err); | |
| 789 | 297 } |
| 298 | |
|
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299 static int |
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300 dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, uint64_t *value) |
|
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301 { |
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302 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
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303 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; |
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304 matchtype_t mt; |
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305 int err; |
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306 |
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307 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET) |
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308 mt = MT_FIRST; |
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309 else |
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310 mt = MT_EXACT; |
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311 |
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312 err = zap_lookup_norm(mos, snapobj, name, 8, 1, |
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313 value, mt, NULL, 0, NULL); |
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314 if (err == ENOTSUP && mt == MT_FIRST) |
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315 err = zap_lookup(mos, snapobj, name, 8, 1, value); |
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316 return (err); |
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317 } |
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318 |
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319 static int |
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320 dsl_dataset_snap_remove(dsl_dataset_t *ds, char *name, dmu_tx_t *tx) |
|
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321 { |
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322 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
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323 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; |
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324 matchtype_t mt; |
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325 int err; |
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326 |
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327 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET) |
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328 mt = MT_FIRST; |
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329 else |
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330 mt = MT_EXACT; |
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331 |
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332 err = zap_remove_norm(mos, snapobj, name, mt, tx); |
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333 if (err == ENOTSUP && mt == MT_FIRST) |
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334 err = zap_remove(mos, snapobj, name, tx); |
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335 return (err); |
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336 } |
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337 |
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338 static int |
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339 dsl_dataset_get_ref(dsl_pool_t *dp, uint64_t dsobj, void *tag, |
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340 dsl_dataset_t **dsp) |
| 789 | 341 { |
| 342 objset_t *mos = dp->dp_meta_objset; | |
| 343 dmu_buf_t *dbuf; | |
| 344 dsl_dataset_t *ds; | |
| 1544 | 345 int err; |
| 789 | 346 |
| 347 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || | |
| 348 dsl_pool_sync_context(dp)); | |
| 349 | |
| 1544 | 350 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf); |
| 351 if (err) | |
| 352 return (err); | |
| 789 | 353 ds = dmu_buf_get_user(dbuf); |
| 354 if (ds == NULL) { | |
| 355 dsl_dataset_t *winner; | |
| 356 | |
| 357 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP); | |
| 358 ds->ds_dbuf = dbuf; | |
| 359 ds->ds_object = dsobj; | |
| 360 ds->ds_phys = dbuf->db_data; | |
| 361 | |
| 2856 | 362 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL); |
|
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363 mutex_init(&ds->ds_recvlock, NULL, MUTEX_DEFAULT, NULL); |
| 4787 | 364 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 365 mutex_init(&ds->ds_deadlist.bpl_lock, NULL, MUTEX_DEFAULT, |
| 366 NULL); | |
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367 rw_init(&ds->ds_rwlock, 0, 0, 0); |
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368 cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL); |
| 2856 | 369 |
| 1544 | 370 err = bplist_open(&ds->ds_deadlist, |
| 789 | 371 mos, ds->ds_phys->ds_deadlist_obj); |
| 1544 | 372 if (err == 0) { |
| 373 err = dsl_dir_open_obj(dp, | |
| 374 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir); | |
| 375 } | |
| 376 if (err) { | |
| 377 /* | |
| 378 * we don't really need to close the blist if we | |
| 379 * just opened it. | |
| 380 */ | |
| 2856 | 381 mutex_destroy(&ds->ds_lock); |
|
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382 mutex_destroy(&ds->ds_recvlock); |
| 4787 | 383 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 384 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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385 rw_destroy(&ds->ds_rwlock); |
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386 cv_destroy(&ds->ds_exclusive_cv); |
| 1544 | 387 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 388 dmu_buf_rele(dbuf, tag); | |
| 389 return (err); | |
| 390 } | |
| 789 | 391 |
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392 if (!dsl_dataset_is_snapshot(ds)) { |
| 789 | 393 ds->ds_snapname[0] = '\0'; |
| 394 if (ds->ds_phys->ds_prev_snap_obj) { | |
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395 err = dsl_dataset_get_ref(dp, |
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396 ds->ds_phys->ds_prev_snap_obj, |
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397 ds, &ds->ds_prev); |
| 789 | 398 } |
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399 |
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400 if (err == 0 && dsl_dir_is_clone(ds->ds_dir)) { |
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401 dsl_dataset_t *origin; |
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402 |
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403 err = dsl_dataset_hold_obj(dp, |
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404 ds->ds_dir->dd_phys->dd_origin_obj, |
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405 FTAG, &origin); |
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406 if (err == 0) { |
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407 ds->ds_origin_txg = |
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408 origin->ds_phys->ds_creation_txg; |
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409 dsl_dataset_rele(origin, FTAG); |
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410 } |
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411 } |
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412 } else if (zfs_flags & ZFS_DEBUG_SNAPNAMES) { |
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413 err = dsl_dataset_get_snapname(ds); |
| 789 | 414 } |
| 415 | |
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416 if (err == 0 && !dsl_dataset_is_snapshot(ds)) { |
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417 /* |
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418 * In sync context, we're called with either no lock |
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419 * or with the write lock. If we're not syncing, |
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420 * we're always called with the read lock held. |
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421 */ |
|
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422 boolean_t need_lock = |
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423 !RW_WRITE_HELD(&dp->dp_config_rwlock) && |
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6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
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424 dsl_pool_sync_context(dp); |
|
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425 |
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426 if (need_lock) |
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427 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
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428 |
| 7265 | 429 err = dsl_prop_get_ds(ds, |
|
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430 "refreservation", sizeof (uint64_t), 1, |
|
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431 &ds->ds_reserved, NULL); |
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432 if (err == 0) { |
| 7265 | 433 err = dsl_prop_get_ds(ds, |
|
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434 "refquota", sizeof (uint64_t), 1, |
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435 &ds->ds_quota, NULL); |
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436 } |
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437 |
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438 if (need_lock) |
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439 rw_exit(&dp->dp_config_rwlock); |
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440 } else { |
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441 ds->ds_reserved = ds->ds_quota = 0; |
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442 } |
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443 |
| 1544 | 444 if (err == 0) { |
| 445 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys, | |
| 446 dsl_dataset_evict); | |
| 447 } | |
| 448 if (err || winner) { | |
| 789 | 449 bplist_close(&ds->ds_deadlist); |
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450 if (ds->ds_prev) |
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451 dsl_dataset_drop_ref(ds->ds_prev, ds); |
| 789 | 452 dsl_dir_close(ds->ds_dir, ds); |
| 2856 | 453 mutex_destroy(&ds->ds_lock); |
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454 mutex_destroy(&ds->ds_recvlock); |
| 4787 | 455 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 456 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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457 rw_destroy(&ds->ds_rwlock); |
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458 cv_destroy(&ds->ds_exclusive_cv); |
| 789 | 459 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 1544 | 460 if (err) { |
| 461 dmu_buf_rele(dbuf, tag); | |
| 462 return (err); | |
| 463 } | |
| 789 | 464 ds = winner; |
| 465 } else { | |
| 4787 | 466 ds->ds_fsid_guid = |
| 789 | 467 unique_insert(ds->ds_phys->ds_fsid_guid); |
| 468 } | |
| 469 } | |
| 470 ASSERT3P(ds->ds_dbuf, ==, dbuf); | |
| 471 ASSERT3P(ds->ds_phys, ==, dbuf->db_data); | |
|
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472 ASSERT(ds->ds_phys->ds_prev_snap_obj != 0 || |
|
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473 spa_version(dp->dp_spa) < SPA_VERSION_ORIGIN || |
|
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474 dp->dp_origin_snap == NULL || ds == dp->dp_origin_snap); |
| 789 | 475 mutex_enter(&ds->ds_lock); |
|
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476 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) { |
| 789 | 477 mutex_exit(&ds->ds_lock); |
|
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478 dmu_buf_rele(ds->ds_dbuf, tag); |
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479 return (ENOENT); |
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480 } |
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481 mutex_exit(&ds->ds_lock); |
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482 *dsp = ds; |
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483 return (0); |
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484 } |
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485 |
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486 static int |
|
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487 dsl_dataset_hold_ref(dsl_dataset_t *ds, void *tag) |
|
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488 { |
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489 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
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490 |
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491 /* |
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492 * In syncing context we don't want the rwlock lock: there |
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493 * may be an existing writer waiting for sync phase to |
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494 * finish. We don't need to worry about such writers, since |
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495 * sync phase is single-threaded, so the writer can't be |
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496 * doing anything while we are active. |
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497 */ |
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498 if (dsl_pool_sync_context(dp)) { |
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499 ASSERT(!DSL_DATASET_IS_DESTROYED(ds)); |
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500 return (0); |
| 789 | 501 } |
|
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502 |
|
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503 /* |
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504 * Normal users will hold the ds_rwlock as a READER until they |
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505 * are finished (i.e., call dsl_dataset_rele()). "Owners" will |
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506 * drop their READER lock after they set the ds_owner field. |
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507 * |
|
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508 * If the dataset is being destroyed, the destroy thread will |
|
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509 * obtain a WRITER lock for exclusive access after it's done its |
|
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510 * open-context work and then change the ds_owner to |
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511 * dsl_reaper once destruction is assured. So threads |
|
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512 * may block here temporarily, until the "destructability" of |
|
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513 * the dataset is determined. |
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514 */ |
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515 ASSERT(!RW_WRITE_HELD(&dp->dp_config_rwlock)); |
|
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|
516 mutex_enter(&ds->ds_lock); |
|
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517 while (!rw_tryenter(&ds->ds_rwlock, RW_READER)) { |
|
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518 rw_exit(&dp->dp_config_rwlock); |
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|
519 cv_wait(&ds->ds_exclusive_cv, &ds->ds_lock); |
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520 if (DSL_DATASET_IS_DESTROYED(ds)) { |
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521 mutex_exit(&ds->ds_lock); |
|
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|
522 dsl_dataset_drop_ref(ds, tag); |
|
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523 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
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524 return (ENOENT); |
|
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|
525 } |
|
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|
526 rw_enter(&dp->dp_config_rwlock, RW_READER); |
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527 } |
| 789 | 528 mutex_exit(&ds->ds_lock); |
| 1544 | 529 return (0); |
| 789 | 530 } |
| 531 | |
| 532 int | |
|
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|
533 dsl_dataset_hold_obj(dsl_pool_t *dp, uint64_t dsobj, void *tag, |
|
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534 dsl_dataset_t **dsp) |
|
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|
535 { |
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|
536 int err = dsl_dataset_get_ref(dp, dsobj, tag, dsp); |
|
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|
537 |
|
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538 if (err) |
|
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539 return (err); |
|
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540 return (dsl_dataset_hold_ref(*dsp, tag)); |
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541 } |
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542 |
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543 int |
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|
544 dsl_dataset_own_obj(dsl_pool_t *dp, uint64_t dsobj, int flags, void *owner, |
|
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545 dsl_dataset_t **dsp) |
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546 { |
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547 int err = dsl_dataset_hold_obj(dp, dsobj, owner, dsp); |
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548 |
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549 ASSERT(DS_MODE_TYPE(flags) != DS_MODE_USER); |
|
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550 |
|
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551 if (err) |
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552 return (err); |
|
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553 if (!dsl_dataset_tryown(*dsp, DS_MODE_IS_INCONSISTENT(flags), owner)) { |
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554 dsl_dataset_rele(*dsp, owner); |
|
8779
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555 *dsp = NULL; |
|
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556 return (EBUSY); |
|
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557 } |
|
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558 return (0); |
|
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559 } |
|
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560 |
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561 int |
|
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562 dsl_dataset_hold(const char *name, void *tag, dsl_dataset_t **dsp) |
| 789 | 563 { |
| 564 dsl_dir_t *dd; | |
| 565 dsl_pool_t *dp; | |
|
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566 const char *snapname; |
| 789 | 567 uint64_t obj; |
| 568 int err = 0; | |
| 569 | |
|
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570 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname); |
| 1544 | 571 if (err) |
| 572 return (err); | |
| 789 | 573 |
| 574 dp = dd->dd_pool; | |
| 575 obj = dd->dd_phys->dd_head_dataset_obj; | |
| 576 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
|
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577 if (obj) |
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578 err = dsl_dataset_get_ref(dp, obj, tag, dsp); |
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579 else |
| 789 | 580 err = ENOENT; |
|
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581 if (err) |
| 789 | 582 goto out; |
|
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583 |
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584 err = dsl_dataset_hold_ref(*dsp, tag); |
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585 |
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586 /* we may be looking for a snapshot */ |
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587 if (err == 0 && snapname != NULL) { |
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588 dsl_dataset_t *ds = NULL; |
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589 |
|
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590 if (*snapname++ != '@') { |
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591 dsl_dataset_rele(*dsp, tag); |
| 789 | 592 err = ENOENT; |
| 593 goto out; | |
| 594 } | |
|
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595 |
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596 dprintf("looking for snapshot '%s'\n", snapname); |
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597 err = dsl_dataset_snap_lookup(*dsp, snapname, &obj); |
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598 if (err == 0) |
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599 err = dsl_dataset_get_ref(dp, obj, tag, &ds); |
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600 dsl_dataset_rele(*dsp, tag); |
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601 |
|
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602 ASSERT3U((err == 0), ==, (ds != NULL)); |
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603 |
|
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604 if (ds) { |
|
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605 mutex_enter(&ds->ds_lock); |
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606 if (ds->ds_snapname[0] == 0) |
|
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607 (void) strlcpy(ds->ds_snapname, snapname, |
|
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608 sizeof (ds->ds_snapname)); |
|
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|
609 mutex_exit(&ds->ds_lock); |
|
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|
610 err = dsl_dataset_hold_ref(ds, tag); |
|
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|
611 *dsp = err ? NULL : ds; |
| 789 | 612 } |
| 613 } | |
| 614 out: | |
| 615 rw_exit(&dp->dp_config_rwlock); | |
| 616 dsl_dir_close(dd, FTAG); | |
| 617 return (err); | |
| 618 } | |
| 619 | |
| 620 int | |
|
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|
621 dsl_dataset_own(const char *name, int flags, void *owner, dsl_dataset_t **dsp) |
| 789 | 622 { |
|
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623 int err = dsl_dataset_hold(name, owner, dsp); |
|
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624 if (err) |
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625 return (err); |
|
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626 if ((*dsp)->ds_phys->ds_num_children > 0 && |
|
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627 !DS_MODE_IS_READONLY(flags)) { |
|
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628 dsl_dataset_rele(*dsp, owner); |
|
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629 return (EROFS); |
|
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|
630 } |
|
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631 if (!dsl_dataset_tryown(*dsp, DS_MODE_IS_INCONSISTENT(flags), owner)) { |
|
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|
632 dsl_dataset_rele(*dsp, owner); |
|
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633 return (EBUSY); |
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|
634 } |
|
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|
635 return (0); |
| 789 | 636 } |
| 637 | |
| 638 void | |
| 639 dsl_dataset_name(dsl_dataset_t *ds, char *name) | |
| 640 { | |
| 641 if (ds == NULL) { | |
| 642 (void) strcpy(name, "mos"); | |
| 643 } else { | |
| 644 dsl_dir_name(ds->ds_dir, name); | |
| 1544 | 645 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 646 if (ds->ds_snapname[0]) { |
| 647 (void) strcat(name, "@"); | |
|
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|
648 /* |
|
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|
649 * We use a "recursive" mutex so that we |
|
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650 * can call dprintf_ds() with ds_lock held. |
|
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|
651 */ |
| 789 | 652 if (!MUTEX_HELD(&ds->ds_lock)) { |
| 653 mutex_enter(&ds->ds_lock); | |
| 654 (void) strcat(name, ds->ds_snapname); | |
| 655 mutex_exit(&ds->ds_lock); | |
| 656 } else { | |
| 657 (void) strcat(name, ds->ds_snapname); | |
| 658 } | |
| 659 } | |
| 660 } | |
| 661 } | |
| 662 | |
|
3978
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|
663 static int |
|
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|
664 dsl_dataset_namelen(dsl_dataset_t *ds) |
|
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|
665 { |
|
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|
666 int result; |
|
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|
667 |
|
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|
668 if (ds == NULL) { |
|
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|
669 result = 3; /* "mos" */ |
|
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|
670 } else { |
|
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|
671 result = dsl_dir_namelen(ds->ds_dir); |
|
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|
672 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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|
673 if (ds->ds_snapname[0]) { |
|
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|
674 ++result; /* adding one for the @-sign */ |
|
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|
675 if (!MUTEX_HELD(&ds->ds_lock)) { |
|
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|
676 mutex_enter(&ds->ds_lock); |
|
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|
677 result += strlen(ds->ds_snapname); |
|
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|
678 mutex_exit(&ds->ds_lock); |
|
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|
679 } else { |
|
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|
680 result += strlen(ds->ds_snapname); |
|
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|
681 } |
|
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|
682 } |
|
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|
683 } |
|
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|
684 |
|
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|
685 return (result); |
|
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|
686 } |
|
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mmusante
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|
687 |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
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diff
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|
688 void |
|
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|
689 dsl_dataset_drop_ref(dsl_dataset_t *ds, void *tag) |
| 789 | 690 { |
| 1544 | 691 dmu_buf_rele(ds->ds_dbuf, tag); |
| 789 | 692 } |
| 693 | |
| 694 void | |
|
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|
695 dsl_dataset_rele(dsl_dataset_t *ds, void *tag) |
| 5367 | 696 { |
|
6689
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|
697 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) { |
|
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|
698 rw_exit(&ds->ds_rwlock); |
|
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|
699 } |
|
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|
700 dsl_dataset_drop_ref(ds, tag); |
|
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|
701 } |
|
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|
702 |
|
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|
703 void |
|
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|
704 dsl_dataset_disown(dsl_dataset_t *ds, void *owner) |
|
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|
705 { |
|
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|
706 ASSERT((ds->ds_owner == owner && ds->ds_dbuf) || |
|
47572a2f5e73
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diff
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|
707 (DSL_DATASET_IS_DESTROYED(ds) && ds->ds_dbuf == NULL)); |
|
47572a2f5e73
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diff
changeset
|
708 |
| 5367 | 709 mutex_enter(&ds->ds_lock); |
|
6689
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|
710 ds->ds_owner = NULL; |
|
47572a2f5e73
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diff
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|
711 if (RW_WRITE_HELD(&ds->ds_rwlock)) { |
|
47572a2f5e73
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|
712 rw_exit(&ds->ds_rwlock); |
|
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|
713 cv_broadcast(&ds->ds_exclusive_cv); |
|
47572a2f5e73
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|
714 } |
| 5367 | 715 mutex_exit(&ds->ds_lock); |
|
6689
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|
716 if (ds->ds_dbuf) |
|
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|
717 dsl_dataset_drop_ref(ds, owner); |
|
47572a2f5e73
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|
718 else |
|
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719 dsl_dataset_evict(ds->ds_dbuf, ds); |
| 5367 | 720 } |
| 721 | |
| 722 boolean_t | |
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723 dsl_dataset_tryown(dsl_dataset_t *ds, boolean_t inconsistentok, void *owner) |
| 5367 | 724 { |
|
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725 boolean_t gotit = FALSE; |
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726 |
| 5367 | 727 mutex_enter(&ds->ds_lock); |
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728 if (ds->ds_owner == NULL && |
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729 (!DS_IS_INCONSISTENT(ds) || inconsistentok)) { |
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730 ds->ds_owner = owner; |
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731 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) |
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732 rw_exit(&ds->ds_rwlock); |
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733 gotit = TRUE; |
| 5367 | 734 } |
| 735 mutex_exit(&ds->ds_lock); | |
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736 return (gotit); |
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737 } |
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738 |
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739 void |
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740 dsl_dataset_make_exclusive(dsl_dataset_t *ds, void *owner) |
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741 { |
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742 ASSERT3P(owner, ==, ds->ds_owner); |
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743 if (!RW_WRITE_HELD(&ds->ds_rwlock)) |
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744 rw_enter(&ds->ds_rwlock, RW_WRITER); |
| 5367 | 745 } |
| 746 | |
| 2199 | 747 uint64_t |
|
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748 dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin, |
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749 uint64_t flags, dmu_tx_t *tx) |
| 789 | 750 { |
| 5367 | 751 dsl_pool_t *dp = dd->dd_pool; |
| 789 | 752 dmu_buf_t *dbuf; |
| 753 dsl_dataset_phys_t *dsphys; | |
| 5367 | 754 uint64_t dsobj; |
| 789 | 755 objset_t *mos = dp->dp_meta_objset; |
| 756 | |
|
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757 if (origin == NULL) |
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758 origin = dp->dp_origin_snap; |
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759 |
| 5367 | 760 ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp); |
| 761 ASSERT(origin == NULL || origin->ds_phys->ds_num_children > 0); | |
| 789 | 762 ASSERT(dmu_tx_is_syncing(tx)); |
| 5367 | 763 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0); |
| 789 | 764 |
|
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765 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
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766 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 767 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 768 dmu_buf_will_dirty(dbuf, tx); |
| 769 dsphys = dbuf->db_data; | |
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770 bzero(dsphys, sizeof (dsl_dataset_phys_t)); |
| 789 | 771 dsphys->ds_dir_obj = dd->dd_object; |
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772 dsphys->ds_flags = flags; |
| 789 | 773 dsphys->ds_fsid_guid = unique_create(); |
| 774 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 775 sizeof (dsphys->ds_guid)); | |
| 776 dsphys->ds_snapnames_zapobj = | |
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777 zap_create_norm(mos, U8_TEXTPREP_TOUPPER, DMU_OT_DSL_DS_SNAP_MAP, |
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778 DMU_OT_NONE, 0, tx); |
| 789 | 779 dsphys->ds_creation_time = gethrestime_sec(); |
|
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780 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg; |
| 789 | 781 dsphys->ds_deadlist_obj = |
| 782 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
|
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783 |
| 5367 | 784 if (origin) { |
| 785 dsphys->ds_prev_snap_obj = origin->ds_object; | |
| 789 | 786 dsphys->ds_prev_snap_txg = |
| 5367 | 787 origin->ds_phys->ds_creation_txg; |
| 789 | 788 dsphys->ds_used_bytes = |
| 5367 | 789 origin->ds_phys->ds_used_bytes; |
| 789 | 790 dsphys->ds_compressed_bytes = |
| 5367 | 791 origin->ds_phys->ds_compressed_bytes; |
| 789 | 792 dsphys->ds_uncompressed_bytes = |
| 5367 | 793 origin->ds_phys->ds_uncompressed_bytes; |
| 794 dsphys->ds_bp = origin->ds_phys->ds_bp; | |
|
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795 dsphys->ds_flags |= origin->ds_phys->ds_flags; |
| 789 | 796 |
| 5367 | 797 dmu_buf_will_dirty(origin->ds_dbuf, tx); |
| 798 origin->ds_phys->ds_num_children++; | |
| 789 | 799 |
|
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800 if (spa_version(dp->dp_spa) >= SPA_VERSION_NEXT_CLONES) { |
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801 if (origin->ds_phys->ds_next_clones_obj == 0) { |
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802 origin->ds_phys->ds_next_clones_obj = |
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803 zap_create(mos, |
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804 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx); |
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805 } |
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806 VERIFY(0 == zap_add_int(mos, |
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807 origin->ds_phys->ds_next_clones_obj, |
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808 dsobj, tx)); |
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809 } |
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810 |
| 789 | 811 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
| 5367 | 812 dd->dd_phys->dd_origin_obj = origin->ds_object; |
| 789 | 813 } |
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814 |
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815 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE) |
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816 dsphys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
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817 |
| 1544 | 818 dmu_buf_rele(dbuf, FTAG); |
| 789 | 819 |
| 820 dmu_buf_will_dirty(dd->dd_dbuf, tx); | |
| 821 dd->dd_phys->dd_head_dataset_obj = dsobj; | |
| 5367 | 822 |
| 823 return (dsobj); | |
| 824 } | |
| 825 | |
| 826 uint64_t | |
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827 dsl_dataset_create_sync(dsl_dir_t *pdd, const char *lastname, |
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828 dsl_dataset_t *origin, uint64_t flags, cred_t *cr, dmu_tx_t *tx) |
| 5367 | 829 { |
| 830 dsl_pool_t *dp = pdd->dd_pool; | |
| 831 uint64_t dsobj, ddobj; | |
| 832 dsl_dir_t *dd; | |
| 833 | |
| 834 ASSERT(lastname[0] != '@'); | |
| 835 | |
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836 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx); |
| 5367 | 837 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd)); |
| 838 | |
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839 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx); |
| 5367 | 840 |
| 841 dsl_deleg_set_create_perms(dd, tx, cr); | |
| 842 | |
| 789 | 843 dsl_dir_close(dd, FTAG); |
| 844 | |
| 2199 | 845 return (dsobj); |
| 846 } | |
| 847 | |
| 848 struct destroyarg { | |
| 849 dsl_sync_task_group_t *dstg; | |
| 850 char *snapname; | |
| 851 char *failed; | |
| 852 }; | |
| 853 | |
| 854 static int | |
| 855 dsl_snapshot_destroy_one(char *name, void *arg) | |
| 856 { | |
| 857 struct destroyarg *da = arg; | |
| 858 dsl_dataset_t *ds; | |
| 859 char *cp; | |
| 860 int err; | |
| 861 | |
| 862 (void) strcat(name, "@"); | |
| 863 (void) strcat(name, da->snapname); | |
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864 err = dsl_dataset_own(name, DS_MODE_READONLY | DS_MODE_INCONSISTENT, |
| 4007 | 865 da->dstg, &ds); |
| 2199 | 866 cp = strchr(name, '@'); |
| 867 *cp = '\0'; | |
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868 if (err == 0) { |
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869 dsl_dataset_make_exclusive(ds, da->dstg); |
|
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870 if (ds->ds_user_ptr) { |
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871 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
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872 ds->ds_user_ptr = NULL; |
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873 } |
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874 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check, |
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875 dsl_dataset_destroy_sync, ds, da->dstg, 0); |
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876 } else if (err == ENOENT) { |
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877 err = 0; |
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878 } else { |
| 2199 | 879 (void) strcpy(da->failed, name); |
| 880 } | |
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881 return (err); |
| 789 | 882 } |
| 883 | |
| 2199 | 884 /* |
| 885 * Destroy 'snapname' in all descendants of 'fsname'. | |
| 886 */ | |
| 887 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy | |
| 888 int | |
| 889 dsl_snapshots_destroy(char *fsname, char *snapname) | |
| 890 { | |
| 891 int err; | |
| 892 struct destroyarg da; | |
| 893 dsl_sync_task_t *dst; | |
| 894 spa_t *spa; | |
| 895 | |
|
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896 err = spa_open(fsname, &spa, FTAG); |
| 2199 | 897 if (err) |
| 898 return (err); | |
| 899 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); | |
| 900 da.snapname = snapname; | |
| 901 da.failed = fsname; | |
| 902 | |
| 903 err = dmu_objset_find(fsname, | |
| 2417 | 904 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN); |
| 2199 | 905 |
| 906 if (err == 0) | |
| 907 err = dsl_sync_task_group_wait(da.dstg); | |
| 908 | |
| 909 for (dst = list_head(&da.dstg->dstg_tasks); dst; | |
| 910 dst = list_next(&da.dstg->dstg_tasks, dst)) { | |
| 911 dsl_dataset_t *ds = dst->dst_arg1; | |
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912 /* |
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913 * Return the file system name that triggered the error |
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914 */ |
| 2199 | 915 if (dst->dst_err) { |
| 916 dsl_dataset_name(ds, fsname); | |
|
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917 *strchr(fsname, '@') = '\0'; |
| 2199 | 918 } |
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919 dsl_dataset_disown(ds, da.dstg); |
| 2199 | 920 } |
| 921 | |
| 922 dsl_sync_task_group_destroy(da.dstg); | |
| 923 spa_close(spa, FTAG); | |
| 924 return (err); | |
| 925 } | |
| 926 | |
| 5367 | 927 /* |
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928 * ds must be opened as OWNER. On return (whether successful or not), |
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929 * ds will be closed and caller can no longer dereference it. |
| 5367 | 930 */ |
| 789 | 931 int |
| 5367 | 932 dsl_dataset_destroy(dsl_dataset_t *ds, void *tag) |
| 789 | 933 { |
| 934 int err; | |
| 2199 | 935 dsl_sync_task_group_t *dstg; |
| 936 objset_t *os; | |
| 789 | 937 dsl_dir_t *dd; |
| 2199 | 938 uint64_t obj; |
| 939 | |
| 5367 | 940 if (dsl_dataset_is_snapshot(ds)) { |
| 2199 | 941 /* Destroying a snapshot is simpler */ |
|
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942 dsl_dataset_make_exclusive(ds, tag); |
|
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943 |
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944 if (ds->ds_user_ptr) { |
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changeset
|
945 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
|
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
946 ds->ds_user_ptr = NULL; |
|
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
947 } |
| 2199 | 948 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 949 dsl_dataset_destroy_check, dsl_dataset_destroy_sync, | |
| 5367 | 950 ds, tag, 0); |
| 951 goto out; | |
| 2199 | 952 } |
| 953 | |
| 954 dd = ds->ds_dir; | |
| 789 | 955 |
| 2199 | 956 /* |
| 957 * Check for errors and mark this ds as inconsistent, in | |
| 958 * case we crash while freeing the objects. | |
| 959 */ | |
| 960 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check, | |
| 961 dsl_dataset_destroy_begin_sync, ds, NULL, 0); | |
| 5367 | 962 if (err) |
| 963 goto out; | |
| 964 | |
| 965 err = dmu_objset_open_ds(ds, DMU_OST_ANY, &os); | |
| 966 if (err) | |
| 967 goto out; | |
| 2199 | 968 |
| 969 /* | |
| 970 * remove the objects in open context, so that we won't | |
| 971 * have too much to do in syncing context. | |
| 972 */ | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
973 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
|
974 ds->ds_phys->ds_prev_snap_txg)) { |
| 6992 | 975 /* |
| 976 * Ignore errors, if there is not enough disk space | |
| 977 * we will deal with it in dsl_dataset_destroy_sync(). | |
| 978 */ | |
| 979 (void) dmu_free_object(os, obj); | |
| 2199 | 980 } |
| 981 | |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
982 /* |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
983 * We need to sync out all in-flight IO before we try to evict |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
984 * (the dataset evict func is trying to clear the cached entries |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
985 * for this dataset in the ARC). |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
986 */ |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
987 txg_wait_synced(dd->dd_pool, 0); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
988 |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
989 /* |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
990 * If we managed to free all the objects in open |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
991 * context, the user space accounting should be zero. |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
992 */ |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
993 if (ds->ds_phys->ds_bp.blk_fill == 0 && |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
994 dmu_objset_userused_enabled(os->os)) { |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
995 uint64_t count; |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
996 |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
997 ASSERT(zap_count(os, DMU_USERUSED_OBJECT, &count) != 0 || |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
998 count == 0); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
999 ASSERT(zap_count(os, DMU_GROUPUSED_OBJECT, &count) != 0 || |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1000 count == 0); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1001 } |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1002 |
| 2199 | 1003 dmu_objset_close(os); |
| 1004 if (err != ESRCH) | |
| 5367 | 1005 goto out; |
| 2199 | 1006 |
|
6975
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1007 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
|
1008 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
|
1009 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
|
1010 |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1011 if (err) |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1012 goto out; |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1013 |
| 5367 | 1014 if (ds->ds_user_ptr) { |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1015 /* |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1016 * 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
|
1017 * 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
|
1018 * the cached entries for this dataset in the ARC). |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1019 */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1020 txg_wait_synced(dd->dd_pool, 0); |
| 5367 | 1021 } |
| 1022 | |
| 2199 | 1023 /* |
| 1024 * Blow away the dsl_dir + head dataset. | |
| 1025 */ | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1026 dsl_dataset_make_exclusive(ds, tag); |
|
6975
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1027 if (ds->ds_user_ptr) { |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1028 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1029 ds->ds_user_ptr = NULL; |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1030 } |
| 2199 | 1031 dstg = dsl_sync_task_group_create(ds->ds_dir->dd_pool); |
| 1032 dsl_sync_task_create(dstg, dsl_dataset_destroy_check, | |
| 5367 | 1033 dsl_dataset_destroy_sync, ds, tag, 0); |
| 2199 | 1034 dsl_sync_task_create(dstg, dsl_dir_destroy_check, |
| 1035 dsl_dir_destroy_sync, dd, FTAG, 0); | |
| 1036 err = dsl_sync_task_group_wait(dstg); | |
| 1037 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
|
1038 /* if it is successful, dsl_dir_destroy_sync will close the dd */ |
| 5367 | 1039 if (err) |
| 2199 | 1040 dsl_dir_close(dd, FTAG); |
| 5367 | 1041 out: |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1042 dsl_dataset_disown(ds, tag); |
| 789 | 1043 return (err); |
| 1044 } | |
| 1045 | |
| 1046 int | |
| 5367 | 1047 dsl_dataset_rollback(dsl_dataset_t *ds, dmu_objset_type_t ost) |
| 789 | 1048 { |
|
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
|
1049 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
|
1050 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1051 ASSERT(ds->ds_owner); |
| 5367 | 1052 |
|
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
|
1053 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
|
1054 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 2199 | 1055 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
|
1056 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
|
1057 /* 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
|
1058 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
|
1059 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
|
1060 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
|
1061 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
|
1062 return (err); |
| 789 | 1063 } |
| 1064 | |
| 1065 void * | |
| 1066 dsl_dataset_set_user_ptr(dsl_dataset_t *ds, | |
| 1067 void *p, dsl_dataset_evict_func_t func) | |
| 1068 { | |
| 1069 void *old; | |
| 1070 | |
| 1071 mutex_enter(&ds->ds_lock); | |
| 1072 old = ds->ds_user_ptr; | |
| 1073 if (old == NULL) { | |
| 1074 ds->ds_user_ptr = p; | |
| 1075 ds->ds_user_evict_func = func; | |
| 1076 } | |
| 1077 mutex_exit(&ds->ds_lock); | |
| 1078 return (old); | |
| 1079 } | |
| 1080 | |
| 1081 void * | |
| 1082 dsl_dataset_get_user_ptr(dsl_dataset_t *ds) | |
| 1083 { | |
| 1084 return (ds->ds_user_ptr); | |
| 1085 } | |
| 1086 | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1087 blkptr_t * |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1088 dsl_dataset_get_blkptr(dsl_dataset_t *ds) |
| 789 | 1089 { |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1090 return (&ds->ds_phys->ds_bp); |
| 789 | 1091 } |
| 1092 | |
| 1093 void | |
| 1094 dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 1095 { | |
| 1096 ASSERT(dmu_tx_is_syncing(tx)); | |
| 1097 /* If it's the meta-objset, set dp_meta_rootbp */ | |
| 1098 if (ds == NULL) { | |
| 1099 tx->tx_pool->dp_meta_rootbp = *bp; | |
| 1100 } else { | |
| 1101 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1102 ds->ds_phys->ds_bp = *bp; | |
| 1103 } | |
| 1104 } | |
| 1105 | |
| 1106 spa_t * | |
| 1107 dsl_dataset_get_spa(dsl_dataset_t *ds) | |
| 1108 { | |
| 1109 return (ds->ds_dir->dd_pool->dp_spa); | |
| 1110 } | |
| 1111 | |
| 1112 void | |
| 1113 dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx) | |
| 1114 { | |
| 1115 dsl_pool_t *dp; | |
| 1116 | |
| 1117 if (ds == NULL) /* this is the meta-objset */ | |
| 1118 return; | |
| 1119 | |
| 1120 ASSERT(ds->ds_user_ptr != NULL); | |
| 2885 | 1121 |
| 1122 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 1123 panic("dirtying snapshot!"); | |
| 789 | 1124 |
| 1125 dp = ds->ds_dir->dd_pool; | |
| 1126 | |
| 1127 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) { | |
| 1128 /* up the hold count until we can be written out */ | |
| 1129 dmu_buf_add_ref(ds->ds_dbuf, ds); | |
| 1130 } | |
| 1131 } | |
| 1132 | |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1133 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1134 * 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
|
1135 * 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
|
1136 * 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
|
1137 * 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
|
1138 * 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
|
1139 * has been freed up since the snapshot was taken. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1140 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1141 static void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1142 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1143 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1144 uint64_t mrs_used; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1145 uint64_t dlused, dlcomp, dluncomp; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1146 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1147 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
|
1148 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1149 if (ds->ds_phys->ds_prev_snap_obj != 0) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1150 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
|
1151 else |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1152 mrs_used = 0; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1153 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1154 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1155 &dluncomp)); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1156 |
|
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1157 ASSERT3U(dlused, <=, mrs_used); |
|
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1158 ds->ds_phys->ds_unique_bytes = |
|
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1159 ds->ds_phys->ds_used_bytes - (mrs_used - dlused); |
|
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|
1160 |
|
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1161 if (!DS_UNIQUE_IS_ACCURATE(ds) && |
|
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1162 spa_version(ds->ds_dir->dd_pool->dp_spa) >= |
|
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1163 SPA_VERSION_UNIQUE_ACCURATE) |
|
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1164 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
|
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|
1165 } |
|
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|
1166 |
|
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|
1167 static uint64_t |
|
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|
1168 dsl_dataset_unique(dsl_dataset_t *ds) |
|
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|
1169 { |
|
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|
1170 if (!DS_UNIQUE_IS_ACCURATE(ds) && !dsl_dataset_is_snapshot(ds)) |
|
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|
1171 dsl_dataset_recalc_head_uniq(ds); |
|
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|
1172 |
|
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|
1173 return (ds->ds_phys->ds_unique_bytes); |
|
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|
1174 } |
|
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|
1175 |
| 789 | 1176 struct killarg { |
|
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1177 dsl_dataset_t *ds; |
| 789 | 1178 zio_t *zio; |
| 1179 dmu_tx_t *tx; | |
| 1180 }; | |
| 1181 | |
|
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1182 /* ARGSUSED */ |
| 789 | 1183 static int |
|
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|
1184 kill_blkptr(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb, |
|
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|
1185 const dnode_phys_t *dnp, void *arg) |
| 789 | 1186 { |
| 1187 struct killarg *ka = arg; | |
|
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|
1188 |
|
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|
1189 if (bp == NULL) |
|
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1190 return (0); |
| 789 | 1191 |
|
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|
1192 if ((zb->zb_level == -1ULL && zb->zb_blkid != 0) || |
|
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6796377 panic on rollback in space_map_add()
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|
1193 (zb->zb_object != 0 && dnp == NULL)) { |
|
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6796377 panic on rollback in space_map_add()
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|
1194 /* |
|
e1d96ca6808c
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|
1195 * It's a block in the intent log. It has no |
|
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6796377 panic on rollback in space_map_add()
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|
1196 * accounting, so just free it. |
|
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|
1197 */ |
|
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6796377 panic on rollback in space_map_add()
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|
1198 VERIFY3U(0, ==, dsl_free(ka->zio, ka->tx->tx_pool, |
|
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|
1199 ka->tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT)); |
|
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|
1200 } else { |
|
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6796377 panic on rollback in space_map_add()
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|
1201 ASSERT3U(bp->blk_birth, >, ka->ds->ds_phys->ds_prev_snap_txg); |
|
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6796377 panic on rollback in space_map_add()
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|
1202 (void) dsl_dataset_block_kill(ka->ds, bp, ka->zio, ka->tx); |
|
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1203 } |
|
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|
1204 |
| 789 | 1205 return (0); |
| 1206 } | |
| 1207 | |
| 1208 /* ARGSUSED */ | |
| 2199 | 1209 static int |
| 1210 dsl_dataset_rollback_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 789 | 1211 { |
| 2199 | 1212 dsl_dataset_t *ds = arg1; |
| 5367 | 1213 dmu_objset_type_t *ost = arg2; |
| 789 | 1214 |
| 2199 | 1215 /* |
| 5367 | 1216 * We can only roll back to emptyness if it is a ZPL objset. |
| 2199 | 1217 */ |
|
10002
2a588c9bb482
6801926 assertion failed: zvol_get_stats(os, nv) == 0, ...
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|
1218 if (*ost != DMU_OST_ZFS && |
|
2a588c9bb482
6801926 assertion failed: zvol_get_stats(os, nv) == 0, ...
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|
1219 ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) |
| 789 | 1220 return (EINVAL); |
| 1221 | |
| 2199 | 1222 /* |
| 1223 * This must not be a snapshot. | |
| 1224 */ | |
| 1225 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 1226 return (EINVAL); | |
| 789 | 1227 |
| 1228 /* | |
|
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|
1229 * If we made changes this txg, traverse_dataset won't find |
| 789 | 1230 * them. Try again. |
| 1231 */ | |
| 2199 | 1232 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 1233 return (EAGAIN); |
| 2199 | 1234 |
| 1235 return (0); | |
| 1236 } | |
| 789 | 1237 |
| 2199 | 1238 /* ARGSUSED */ |
| 1239 static void | |
| 4543 | 1240 dsl_dataset_rollback_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1241 { |
| 1242 dsl_dataset_t *ds = arg1; | |
| 5367 | 1243 dmu_objset_type_t *ost = arg2; |
| 2199 | 1244 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 789 | 1245 |
| 1246 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1247 | |
|
4967
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
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diff
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|
1248 if (ds->ds_user_ptr != NULL) { |
| 5367 | 1249 /* |
| 1250 * We need to make sure that the objset_impl_t is reopened after | |
| 1251 * we do the rollback, otherwise it will have the wrong | |
| 1252 * objset_phys_t. Normally this would happen when this | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1253 * dataset-open is closed, thus causing the |
| 5367 | 1254 * dataset to be immediately evicted. But when doing "zfs recv |
| 1255 * -F", we reopen the objset before that, so that there is no | |
| 1256 * window where the dataset is closed and inconsistent. | |
| 1257 */ | |
| 1258 ds->ds_user_evict_func(ds, ds->ds_user_ptr); | |
| 1259 ds->ds_user_ptr = NULL; | |
|
4967
8d0de61ff354
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diff
changeset
|
1260 } |
|
4935
c80bf0e6f4aa
6534949 Stale need for range locking comment in zvol.c
perrin
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4787
diff
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|
1261 |
|
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|
1262 /* Transfer space that was freed since last snap back to the head. */ |
|
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|
1263 { |
|
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|
1264 uint64_t used; |
|
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changeset
|
1265 |
|
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changeset
|
1266 VERIFY(0 == bplist_space_birthrange(&ds->ds_deadlist, |
|
6d408f0a5fbd
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changeset
|
1267 ds->ds_origin_txg, UINT64_MAX, &used)); |
|
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changeset
|
1268 dsl_dir_transfer_space(ds->ds_dir, used, |
|
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changeset
|
1269 DD_USED_SNAP, DD_USED_HEAD, tx); |
|
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|
1270 } |
|
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|
1271 |
| 789 | 1272 /* Zero out the deadlist. */ |
| 1273 bplist_close(&ds->ds_deadlist); | |
| 1274 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1275 ds->ds_phys->ds_deadlist_obj = | |
| 1276 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1277 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1278 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1279 |
| 1280 { | |
|
8746
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changeset
|
1281 /* |
|
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6796377 panic on rollback in space_map_add()
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|
1282 * Free blkptrs that we gave birth to - this covers |
|
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6796377 panic on rollback in space_map_add()
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|
1283 * claimed but not played log blocks too. |
|
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|
1284 */ |
| 789 | 1285 zio_t *zio; |
| 1286 struct killarg ka; | |
| 1287 | |
| 1288 zio = zio_root(tx->tx_pool->dp_spa, NULL, NULL, | |
| 1289 ZIO_FLAG_MUSTSUCCEED); | |
|
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|
1290 ka.ds = ds; |
| 789 | 1291 ka.zio = zio; |
| 1292 ka.tx = tx; | |
|
7837
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|
1293 (void) traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg, |
|
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|
1294 TRAVERSE_POST, kill_blkptr, &ka); |
| 789 | 1295 (void) zio_wait(zio); |
| 1296 } | |
| 1297 | |
|
9390
887948510f80
6826861 assertion failed in dsl_dataset_destroy_sync when "zfs destroy" old fs
Chris Kirby <chris.kirby@sun.com>
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diff
changeset
|
1298 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) || ds->ds_phys->ds_unique_bytes == 0); |
|
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|
1299 |
|
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|
1300 if (ds->ds_prev && ds->ds_prev != ds->ds_dir->dd_pool->dp_origin_snap) { |
| 5367 | 1301 /* Change our contents to that of the prev snapshot */ |
|
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|
1302 |
| 5367 | 1303 ASSERT3U(ds->ds_prev->ds_object, ==, |
| 1304 ds->ds_phys->ds_prev_snap_obj); | |
|
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changeset
|
1305 ASSERT3U(ds->ds_phys->ds_used_bytes, <=, |
|
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|
1306 ds->ds_prev->ds_phys->ds_used_bytes); |
|
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|
1307 |
| 5367 | 1308 ds->ds_phys->ds_bp = ds->ds_prev->ds_phys->ds_bp; |
| 1309 ds->ds_phys->ds_used_bytes = | |
| 1310 ds->ds_prev->ds_phys->ds_used_bytes; | |
| 1311 ds->ds_phys->ds_compressed_bytes = | |
| 1312 ds->ds_prev->ds_phys->ds_compressed_bytes; | |
| 1313 ds->ds_phys->ds_uncompressed_bytes = | |
| 1314 ds->ds_prev->ds_phys->ds_uncompressed_bytes; | |
| 1315 ds->ds_phys->ds_flags = ds->ds_prev->ds_phys->ds_flags; | |
| 789 | 1316 |
| 5367 | 1317 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { |
| 1318 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 1319 ds->ds_prev->ds_phys->ds_unique_bytes = 0; | |
| 1320 } | |
| 1321 } else { | |
|
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changeset
|
1322 objset_impl_t *osi; |
|
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|
1323 |
|
10002
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|
1324 ASSERT(*ost != DMU_OST_ZVOL); |
|
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changeset
|
1325 ASSERT3U(ds->ds_phys->ds_used_bytes, ==, 0); |
|
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changeset
|
1326 ASSERT3U(ds->ds_phys->ds_compressed_bytes, ==, 0); |
|
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|
1327 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, ==, 0); |
|
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changeset
|
1328 |
| 5367 | 1329 bzero(&ds->ds_phys->ds_bp, sizeof (blkptr_t)); |
| 1330 ds->ds_phys->ds_flags = 0; | |
| 1331 ds->ds_phys->ds_unique_bytes = 0; | |
|
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|
1332 if (spa_version(ds->ds_dir->dd_pool->dp_spa) >= |
|
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changeset
|
1333 SPA_VERSION_UNIQUE_ACCURATE) |
|
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|
1334 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
|
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|
1335 |
|
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changeset
|
1336 osi = dmu_objset_create_impl(ds->ds_dir->dd_pool->dp_spa, ds, |
| 5367 | 1337 &ds->ds_phys->ds_bp, *ost, tx); |
|
7046
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changeset
|
1338 #ifdef _KERNEL |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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|
1339 zfs_create_fs(&osi->os, kcred, NULL, tx); |
|
361307ae060d
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|
1340 #endif |
|
2532
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6448999 panic: used == ds->ds_phys->ds_unique_bytes
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|
1341 } |
| 4543 | 1342 |
| 1343 spa_history_internal_log(LOG_DS_ROLLBACK, ds->ds_dir->dd_pool->dp_spa, | |
| 1344 tx, cr, "dataset = %llu", ds->ds_object); | |
| 789 | 1345 } |
| 1346 | |
|
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|
1347 /* ARGSUSED */ |
|
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|
1348 static int |
| 2199 | 1349 dsl_dataset_destroy_begin_check(void *arg1, void *arg2, dmu_tx_t *tx) |
|
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|
1350 { |
| 2199 | 1351 dsl_dataset_t *ds = arg1; |
| 5367 | 1352 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 1353 uint64_t count; | |
| 1354 int err; | |
|
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|
1355 |
|
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|
1356 /* |
|
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|
1357 * Can't delete a head dataset if there are snapshots of it. |
|
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1358 * (Except if the only snapshots are from the branch we cloned |
|
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|
1359 * from.) |
|
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|
1360 */ |
|
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|
1361 if (ds->ds_prev != NULL && |
|
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|
1362 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
|
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|
1363 return (EINVAL); |
|
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|
1364 |
| 5367 | 1365 /* |
| 1366 * This is really a dsl_dir thing, but check it here so that | |
| 1367 * we'll be less likely to leave this dataset inconsistent & | |
| 1368 * nearly destroyed. | |
| 1369 */ | |
| 1370 err = zap_count(mos, ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count); | |
| 1371 if (err) | |
| 1372 return (err); | |
| 1373 if (count != 0) | |
| 1374 return (EEXIST); | |
| 1375 | |
|
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|
1376 return (0); |
|
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|
1377 } |
|
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|
1378 |
| 2199 | 1379 /* ARGSUSED */ |
| 1380 static void | |
| 4543 | 1381 dsl_dataset_destroy_begin_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1382 { |
| 2199 | 1383 dsl_dataset_t *ds = arg1; |
| 4543 | 1384 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
| 789 | 1385 |
| 2199 | 1386 /* Mark it as inconsistent on-disk, in case we crash */ |
| 1387 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1388 ds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT; | |
| 4543 | 1389 |
| 1390 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx, | |
| 1391 cr, "dataset = %llu", ds->ds_object); | |
| 2199 | 1392 } |
| 789 | 1393 |
| 2199 | 1394 /* ARGSUSED */ |
| 5367 | 1395 int |
| 2199 | 1396 dsl_dataset_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 1397 { | |
| 1398 dsl_dataset_t *ds = arg1; | |
| 789 | 1399 |
|
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1400 /* we have an owner hold, so noone else can destroy us */ |
|
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|
1401 ASSERT(!DSL_DATASET_IS_DESTROYED(ds)); |
|
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|
1402 |
| 789 | 1403 /* Can't delete a branch point. */ |
| 2199 | 1404 if (ds->ds_phys->ds_num_children > 1) |
| 1405 return (EEXIST); | |
| 789 | 1406 |
| 1407 /* | |
| 1408 * Can't delete a head dataset if there are snapshots of it. | |
| 1409 * (Except if the only snapshots are from the branch we cloned | |
| 1410 * from.) | |
| 1411 */ | |
| 1412 if (ds->ds_prev != NULL && | |
| 2199 | 1413 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
| 789 | 1414 return (EINVAL); |
| 1415 | |
| 1416 /* | |
| 1417 * If we made changes this txg, traverse_dsl_dataset won't find | |
| 1418 * them. Try again. | |
| 1419 */ | |
| 2199 | 1420 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 1421 return (EAGAIN); |
| 2199 | 1422 |
| 1423 /* XXX we should do some i/o error checking... */ | |
| 1424 return (0); | |
| 1425 } | |
| 1426 | |
|
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|
1427 struct refsarg { |
|
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|
1428 kmutex_t lock; |
|
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|
1429 boolean_t gone; |
|
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|
1430 kcondvar_t cv; |
|
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|
1431 }; |
|
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|
1432 |
|
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|
1433 /* ARGSUSED */ |
|
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|
1434 static void |
|
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|
1435 dsl_dataset_refs_gone(dmu_buf_t *db, void *argv) |
|
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1436 { |
|
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1437 struct refsarg *arg = argv; |
|
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1438 |
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1439 mutex_enter(&arg->lock); |
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|
1440 arg->gone = TRUE; |
|
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|
1441 cv_signal(&arg->cv); |
|
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|
1442 mutex_exit(&arg->lock); |
|
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1443 } |
|
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1444 |
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1445 static void |
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1446 dsl_dataset_drain_refs(dsl_dataset_t *ds, void *tag) |
|
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1447 { |
|
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|
1448 struct refsarg arg; |
|
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1449 |
|
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|
1450 mutex_init(&arg.lock, NULL, MUTEX_DEFAULT, NULL); |
|
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|
1451 cv_init(&arg.cv, NULL, CV_DEFAULT, NULL); |
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|
1452 arg.gone = FALSE; |
|
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|
1453 (void) dmu_buf_update_user(ds->ds_dbuf, ds, &arg, &ds->ds_phys, |
|
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1454 dsl_dataset_refs_gone); |
|
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|
1455 dmu_buf_rele(ds->ds_dbuf, tag); |
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|
1456 mutex_enter(&arg.lock); |
|
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|
1457 while (!arg.gone) |
|
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|
1458 cv_wait(&arg.cv, &arg.lock); |
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|
1459 ASSERT(arg.gone); |
|
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|
1460 mutex_exit(&arg.lock); |
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|
1461 ds->ds_dbuf = NULL; |
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|
1462 ds->ds_phys = NULL; |
|
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|
1463 mutex_destroy(&arg.lock); |
|
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|
1464 cv_destroy(&arg.cv); |
|
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|
1465 } |
|
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|
1466 |
| 5367 | 1467 void |
| 4543 | 1468 dsl_dataset_destroy_sync(void *arg1, void *tag, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1469 { |
| 1470 dsl_dataset_t *ds = arg1; | |
| 1471 zio_t *zio; | |
| 1472 int err; | |
| 1473 int after_branch_point = FALSE; | |
| 1474 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 1475 objset_t *mos = dp->dp_meta_objset; | |
| 1476 dsl_dataset_t *ds_prev = NULL; | |
| 1477 uint64_t obj; | |
| 1478 | |
|
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|
1479 ASSERT(ds->ds_owner); |
| 2199 | 1480 ASSERT3U(ds->ds_phys->ds_num_children, <=, 1); |
| 1481 ASSERT(ds->ds_prev == NULL || | |
| 1482 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object); | |
| 1483 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg); | |
| 1484 | |
|
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1485 /* signal any waiters that this dataset is going away */ |
|
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|
1486 mutex_enter(&ds->ds_lock); |
|
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|
1487 ds->ds_owner = dsl_reaper; |
|
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|
1488 cv_broadcast(&ds->ds_exclusive_cv); |
|
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|
1489 mutex_exit(&ds->ds_lock); |
|
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|
1490 |
|
5378
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PSARC 2007/555 zfs fs-only quotas and reservations
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|
1491 /* Remove our reservation */ |
|
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|
1492 if (ds->ds_reserved != 0) { |
|
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|
1493 uint64_t val = 0; |
|
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|
1494 dsl_dataset_set_reservation_sync(ds, &val, cr, tx); |
|
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|
1495 ASSERT3U(ds->ds_reserved, ==, 0); |
|
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|
1496 } |
|
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|
1497 |
| 2199 | 1498 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 1499 | |
|
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|
1500 dsl_pool_ds_destroyed(ds, tx); |
|
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|
1501 |
| 2199 | 1502 obj = ds->ds_object; |
| 789 | 1503 |
| 1504 if (ds->ds_phys->ds_prev_snap_obj != 0) { | |
| 1505 if (ds->ds_prev) { | |
| 1506 ds_prev = ds->ds_prev; | |
| 1507 } else { | |
|
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1508 VERIFY(0 == dsl_dataset_hold_obj(dp, |
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|
1509 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev)); |
| 789 | 1510 } |
| 1511 after_branch_point = | |
| 1512 (ds_prev->ds_phys->ds_next_snap_obj != obj); | |
| 1513 | |
| 1514 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx); | |
| 1515 if (after_branch_point && | |
|
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|
1516 ds_prev->ds_phys->ds_next_clones_obj != 0) { |
|
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|
1517 VERIFY3U(0, ==, zap_remove_int(mos, |
|
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|
1518 ds_prev->ds_phys->ds_next_clones_obj, obj, tx)); |
|
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|
1519 if (ds->ds_phys->ds_next_snap_obj != 0) { |
|
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|
1520 VERIFY(0 == zap_add_int(mos, |
|
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|
1521 ds_prev->ds_phys->ds_next_clones_obj, |
|
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|
1522 ds->ds_phys->ds_next_snap_obj, tx)); |
|
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|
1523 } |
|
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|
1524 } |
|
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|
1525 if (after_branch_point && |
| 789 | 1526 ds->ds_phys->ds_next_snap_obj == 0) { |
| 1527 /* This clone is toast. */ | |
| 1528 ASSERT(ds_prev->ds_phys->ds_num_children > 1); | |
| 1529 ds_prev->ds_phys->ds_num_children--; | |
| 1530 } else if (!after_branch_point) { | |
| 1531 ds_prev->ds_phys->ds_next_snap_obj = | |
| 1532 ds->ds_phys->ds_next_snap_obj; | |
| 1533 } | |
| 1534 } | |
| 1535 | |
| 1536 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); | |
| 1537 | |
| 1538 if (ds->ds_phys->ds_next_snap_obj != 0) { | |
| 2199 | 1539 blkptr_t bp; |
| 789 | 1540 dsl_dataset_t *ds_next; |
| 1541 uint64_t itor = 0; | |
|
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1542 uint64_t old_unique; |
|
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1543 int64_t used = 0, compressed = 0, uncompressed = 0; |
| 789 | 1544 |
|
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1545 VERIFY(0 == dsl_dataset_hold_obj(dp, |
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1546 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next)); |
| 789 | 1547 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj); |
| 1548 | |
|
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1549 old_unique = dsl_dataset_unique(ds_next); |
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1550 |
| 789 | 1551 dmu_buf_will_dirty(ds_next->ds_dbuf, tx); |
| 1552 ds_next->ds_phys->ds_prev_snap_obj = | |
| 1553 ds->ds_phys->ds_prev_snap_obj; | |
| 1554 ds_next->ds_phys->ds_prev_snap_txg = | |
| 1555 ds->ds_phys->ds_prev_snap_txg; | |
| 1556 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, | |
| 1557 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0); | |
| 1558 | |
| 1559 /* | |
| 1560 * Transfer to our deadlist (which will become next's | |
| 1561 * new deadlist) any entries from next's current | |
| 1562 * deadlist which were born before prev, and free the | |
| 1563 * other entries. | |
| 1564 * | |
| 1565 * XXX we're doing this long task with the config lock held | |
| 1566 */ | |
|
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1567 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) { |
| 789 | 1568 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) { |
| 1544 | 1569 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, |
| 1570 &bp, tx)); | |
| 789 | 1571 if (ds_prev && !after_branch_point && |
| 1572 bp.blk_birth > | |
| 1573 ds_prev->ds_phys->ds_prev_snap_txg) { | |
| 1574 ds_prev->ds_phys->ds_unique_bytes += | |
| 2082 | 1575 bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1576 } |
| 1577 } else { | |
| 2082 | 1578 used += bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1579 compressed += BP_GET_PSIZE(&bp); |
| 1580 uncompressed += BP_GET_UCSIZE(&bp); | |
| 1581 /* XXX check return value? */ | |
|
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1582 (void) dsl_free(zio, dp, tx->tx_txg, |
| 789 | 1583 &bp, NULL, NULL, ARC_NOWAIT); |
| 1584 } | |
| 1585 } | |
| 1586 | |
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1587 ASSERT3U(used, ==, ds->ds_phys->ds_unique_bytes); |
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1588 |
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1589 /* change snapused */ |
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1590 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP, |
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1591 -used, -compressed, -uncompressed, tx); |
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1592 |
| 789 | 1593 /* free next's deadlist */ |
| 1594 bplist_close(&ds_next->ds_deadlist); | |
| 1595 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx); | |
| 1596 | |
| 1597 /* set next's deadlist to our deadlist */ | |
|
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1598 bplist_close(&ds->ds_deadlist); |
| 789 | 1599 ds_next->ds_phys->ds_deadlist_obj = |
| 1600 ds->ds_phys->ds_deadlist_obj; | |
| 1544 | 1601 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos, |
| 1602 ds_next->ds_phys->ds_deadlist_obj)); | |
| 789 | 1603 ds->ds_phys->ds_deadlist_obj = 0; |
| 1604 | |
| 1605 if (ds_next->ds_phys->ds_next_snap_obj != 0) { | |
| 1606 /* | |
| 1607 * Update next's unique to include blocks which | |
| 1608 * were previously shared by only this snapshot | |
| 1609 * and it. Those blocks will be born after the | |
| 1610 * prev snap and before this snap, and will have | |
| 1611 * died after the next snap and before the one | |
| 1612 * after that (ie. be on the snap after next's | |
| 1613 * deadlist). | |
| 1614 * | |
| 1615 * XXX we're doing this long task with the | |
| 1616 * config lock held | |
| 1617 */ | |
| 1618 dsl_dataset_t *ds_after_next; | |
|
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1619 uint64_t space; |
| 789 | 1620 |
|
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1621 VERIFY(0 == dsl_dataset_hold_obj(dp, |
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1622 ds_next->ds_phys->ds_next_snap_obj, |
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1623 FTAG, &ds_after_next)); |
|
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1624 |
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1625 VERIFY(0 == |
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1626 bplist_space_birthrange(&ds_after_next->ds_deadlist, |
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1627 ds->ds_phys->ds_prev_snap_txg, |
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1628 ds->ds_phys->ds_creation_txg, &space)); |
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1629 ds_next->ds_phys->ds_unique_bytes += space; |
| 789 | 1630 |
|
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1631 dsl_dataset_rele(ds_after_next, FTAG); |
| 789 | 1632 ASSERT3P(ds_next->ds_prev, ==, NULL); |
| 1633 } else { | |
| 1634 ASSERT3P(ds_next->ds_prev, ==, ds); | |
|
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1635 dsl_dataset_drop_ref(ds_next->ds_prev, ds_next); |
|
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1636 ds_next->ds_prev = NULL; |
| 789 | 1637 if (ds_prev) { |
|
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1638 VERIFY(0 == dsl_dataset_get_ref(dp, |
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1639 ds->ds_phys->ds_prev_snap_obj, |
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1640 ds_next, &ds_next->ds_prev)); |
| 789 | 1641 } |
|
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1642 |
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1643 dsl_dataset_recalc_head_uniq(ds_next); |
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1644 |
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1645 /* |
|
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1646 * Reduce the amount of our unconsmed refreservation |
|
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1647 * being charged to our parent by the amount of |
|
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1648 * new unique data we have gained. |
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1649 */ |
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1650 if (old_unique < ds_next->ds_reserved) { |
|
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1651 int64_t mrsdelta; |
|
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1652 uint64_t new_unique = |
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1653 ds_next->ds_phys->ds_unique_bytes; |
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1654 |
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1655 ASSERT(old_unique <= new_unique); |
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|
1656 mrsdelta = MIN(new_unique - old_unique, |
|
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1657 ds_next->ds_reserved - old_unique); |
|
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1658 dsl_dir_diduse_space(ds->ds_dir, |
|
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1659 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx); |
|
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1660 } |
| 789 | 1661 } |
|
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|
1662 dsl_dataset_rele(ds_next, FTAG); |
| 789 | 1663 } else { |
| 1664 /* | |
| 1665 * There's no next snapshot, so this is a head dataset. | |
| 1666 * Destroy the deadlist. Unless it's a clone, the | |
| 1667 * deadlist should be empty. (If it's a clone, it's | |
| 1668 * safe to ignore the deadlist contents.) | |
| 1669 */ | |
| 1670 struct killarg ka; | |
| 1671 | |
| 1672 ASSERT(after_branch_point || bplist_empty(&ds->ds_deadlist)); | |
| 1673 bplist_close(&ds->ds_deadlist); | |
| 1674 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1675 ds->ds_phys->ds_deadlist_obj = 0; | |
| 1676 | |
| 1677 /* | |
| 1678 * Free everything that we point to (that's born after | |
| 1679 * the previous snapshot, if we are a clone) | |
| 1680 * | |
|
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1681 * NB: this should be very quick, because we already |
|
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1682 * freed all the objects in open context. |
| 789 | 1683 */ |
|
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|
1684 ka.ds = ds; |
| 789 | 1685 ka.zio = zio; |
| 1686 ka.tx = tx; | |
|
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1687 err = traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg, |
|
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|
1688 TRAVERSE_POST, kill_blkptr, &ka); |
| 789 | 1689 ASSERT3U(err, ==, 0); |
|
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|
1690 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) || |
|
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|
1691 ds->ds_phys->ds_unique_bytes == 0); |
| 789 | 1692 } |
| 1693 | |
| 1694 err = zio_wait(zio); | |
| 1695 ASSERT3U(err, ==, 0); | |
| 1696 | |
|
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1697 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == ds->ds_object) { |
|
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|
1698 /* Erase the link in the dir */ |
|
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|
1699 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx); |
|
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|
1700 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0; |
|
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|
1701 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0); |
| 789 | 1702 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx); |
| 1703 ASSERT(err == 0); | |
| 1704 } else { | |
| 1705 /* remove from snapshot namespace */ | |
| 1706 dsl_dataset_t *ds_head; | |
|
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|
1707 ASSERT(ds->ds_phys->ds_snapnames_zapobj == 0); |
|
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|
1708 VERIFY(0 == dsl_dataset_hold_obj(dp, |
|
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|
1709 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &ds_head)); |
|
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|
1710 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 1711 #ifdef ZFS_DEBUG |
| 1712 { | |
| 1713 uint64_t val; | |
|
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|
1714 |
|
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|
1715 err = dsl_dataset_snap_lookup(ds_head, |
|
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|
1716 ds->ds_snapname, &val); |
| 789 | 1717 ASSERT3U(err, ==, 0); |
| 1718 ASSERT3U(val, ==, obj); | |
| 1719 } | |
| 1720 #endif | |
|
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|
1721 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx); |
| 789 | 1722 ASSERT(err == 0); |
|
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|
1723 dsl_dataset_rele(ds_head, FTAG); |
| 789 | 1724 } |
| 1725 | |
| 1726 if (ds_prev && ds->ds_prev != ds_prev) | |
|
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|
1727 dsl_dataset_rele(ds_prev, FTAG); |
| 789 | 1728 |
| 5094 | 1729 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx); |
| 4543 | 1730 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx, |
| 1731 cr, "dataset = %llu", ds->ds_object); | |
| 1732 | |
|
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|
1733 if (ds->ds_phys->ds_next_clones_obj != 0) { |
|
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|
1734 uint64_t count; |
|
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|
1735 ASSERT(0 == zap_count(mos, |
|
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|
1736 ds->ds_phys->ds_next_clones_obj, &count) && count == 0); |
|
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1737 VERIFY(0 == dmu_object_free(mos, |
|
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|
1738 ds->ds_phys->ds_next_clones_obj, tx)); |
|
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1739 } |
|
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1740 if (ds->ds_phys->ds_props_obj != 0) |
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1741 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_props_obj, tx)); |
|
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1742 dsl_dir_close(ds->ds_dir, ds); |
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1743 ds->ds_dir = NULL; |
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1744 dsl_dataset_drain_refs(ds, tag); |
| 2199 | 1745 VERIFY(0 == dmu_object_free(mos, obj, tx)); |
| 1746 } | |
| 1747 | |
|
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1748 static int |
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1749 dsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, dmu_tx_t *tx) |
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1750 { |
|
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1751 uint64_t asize; |
|
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1752 |
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1753 if (!dmu_tx_is_syncing(tx)) |
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1754 return (0); |
|
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1755 |
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1756 /* |
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1757 * If there's an fs-only reservation, any blocks that might become |
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1758 * owned by the snapshot dataset must be accommodated by space |
|
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1759 * outside of the reservation. |
|
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1760 */ |
|
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1761 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved); |
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1762 if (asize > dsl_dir_space_available(ds->ds_dir, NULL, 0, FALSE)) |
|
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1763 return (ENOSPC); |
|
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1764 |
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1765 /* |
|
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1766 * Propogate any reserved space for this snapshot to other |
|
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1767 * snapshot checks in this sync group. |
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1768 */ |
|
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1769 if (asize > 0) |
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1770 dsl_dir_willuse_space(ds->ds_dir, asize, tx); |
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1771 |
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1772 return (0); |
|
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1773 } |
|
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1774 |
| 2199 | 1775 /* ARGSUSED */ |
| 1776 int | |
| 1777 dsl_dataset_snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 1778 { | |
| 5367 | 1779 dsl_dataset_t *ds = arg1; |
| 2199 | 1780 const char *snapname = arg2; |
| 1781 int err; | |
| 1782 uint64_t value; | |
| 789 | 1783 |
| 1784 /* | |
| 2199 | 1785 * We don't allow multiple snapshots of the same txg. If there |
| 1786 * is already one, try again. | |
| 1787 */ | |
| 1788 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg) | |
| 1789 return (EAGAIN); | |
| 1790 | |
| 1791 /* | |
| 1792 * Check for conflicting name snapshot name. | |
| 789 | 1793 */ |
|
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1794 err = dsl_dataset_snap_lookup(ds, snapname, &value); |
| 2199 | 1795 if (err == 0) |
| 1796 return (EEXIST); | |
| 1797 if (err != ENOENT) | |
| 1798 return (err); | |
| 789 | 1799 |
|
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1800 /* |
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1801 * Check that the dataset's name is not too long. Name consists |
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1802 * of the dataset's length + 1 for the @-sign + snapshot name's length |
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1803 */ |
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1804 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN) |
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1805 return (ENAMETOOLONG); |
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1806 |
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1807 err = dsl_dataset_snapshot_reserve_space(ds, tx); |
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1808 if (err) |
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1809 return (err); |
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1810 |
| 2199 | 1811 ds->ds_trysnap_txg = tx->tx_txg; |
| 789 | 1812 return (0); |
| 1813 } | |
| 1814 | |
| 2199 | 1815 void |
| 4543 | 1816 dsl_dataset_snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1817 { |
| 5367 | 1818 dsl_dataset_t *ds = arg1; |
| 2199 | 1819 const char *snapname = arg2; |
| 1820 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 789 | 1821 dmu_buf_t *dbuf; |
| 1822 dsl_dataset_phys_t *dsphys; | |
|
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1823 uint64_t dsobj, crtxg; |
| 789 | 1824 objset_t *mos = dp->dp_meta_objset; |
| 1825 int err; | |
| 1826 | |
| 2199 | 1827 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 789 | 1828 |
|
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1829 /* |
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1830 * The origin's ds_creation_txg has to be < TXG_INITIAL |
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1831 */ |
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1832 if (strcmp(snapname, ORIGIN_DIR_NAME) == 0) |
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1833 crtxg = 1; |
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1834 else |
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1835 crtxg = tx->tx_txg; |
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1836 |
|
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1837 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
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1838 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 1839 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 1840 dmu_buf_will_dirty(dbuf, tx); |
| 1841 dsphys = dbuf->db_data; | |
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1842 bzero(dsphys, sizeof (dsl_dataset_phys_t)); |
| 2199 | 1843 dsphys->ds_dir_obj = ds->ds_dir->dd_object; |
| 789 | 1844 dsphys->ds_fsid_guid = unique_create(); |
| 1845 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 1846 sizeof (dsphys->ds_guid)); | |
| 1847 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj; | |
| 1848 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg; | |
| 1849 dsphys->ds_next_snap_obj = ds->ds_object; | |
| 1850 dsphys->ds_num_children = 1; | |
| 1851 dsphys->ds_creation_time = gethrestime_sec(); | |
|
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1852 dsphys->ds_creation_txg = crtxg; |
| 789 | 1853 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj; |
| 1854 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes; | |
| 1855 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes; | |
| 1856 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes; | |
| 2082 | 1857 dsphys->ds_flags = ds->ds_phys->ds_flags; |
| 789 | 1858 dsphys->ds_bp = ds->ds_phys->ds_bp; |
| 1544 | 1859 dmu_buf_rele(dbuf, FTAG); |
| 789 | 1860 |
| 2199 | 1861 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0); |
| 1862 if (ds->ds_prev) { | |
|
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1863 uint64_t next_clones_obj = |
|
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1864 ds->ds_prev->ds_phys->ds_next_clones_obj; |
| 2199 | 1865 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj == |
| 789 | 1866 ds->ds_object || |
| 2199 | 1867 ds->ds_prev->ds_phys->ds_num_children > 1); |
| 1868 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { | |
| 1869 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 789 | 1870 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, |
| 2199 | 1871 ds->ds_prev->ds_phys->ds_creation_txg); |
| 1872 ds->ds_prev->ds_phys->ds_next_snap_obj = dsobj; | |
|
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1873 } else if (next_clones_obj != 0) { |
|
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1874 VERIFY3U(0, ==, zap_remove_int(mos, |
|
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1875 next_clones_obj, dsphys->ds_next_snap_obj, tx)); |
|
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1876 VERIFY3U(0, ==, zap_add_int(mos, |
|
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1877 next_clones_obj, dsobj, tx)); |
| 789 | 1878 } |
| 1879 } | |
| 1880 | |
|
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1881 /* |
|
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1882 * If we have a reference-reservation on this dataset, we will |
|
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1883 * need to increase the amount of refreservation being charged |
|
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1884 * since our unique space is going to zero. |
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1885 */ |
|
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|
1886 if (ds->ds_reserved) { |
|
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1887 int64_t add = MIN(dsl_dataset_unique(ds), ds->ds_reserved); |
|
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1888 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, |
|
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1889 add, 0, 0, tx); |
|
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1890 } |
|
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1891 |
| 789 | 1892 bplist_close(&ds->ds_deadlist); |
| 1893 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
|
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1894 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg); |
| 789 | 1895 ds->ds_phys->ds_prev_snap_obj = dsobj; |
|
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1896 ds->ds_phys->ds_prev_snap_txg = crtxg; |
| 789 | 1897 ds->ds_phys->ds_unique_bytes = 0; |
|
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1898 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE) |
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1899 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
| 789 | 1900 ds->ds_phys->ds_deadlist_obj = |
| 1901 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1902 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1903 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1904 |
| 1905 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj); | |
| 1906 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj, | |
| 1907 snapname, 8, 1, &dsobj, tx); | |
| 1908 ASSERT(err == 0); | |
| 1909 | |
| 1910 if (ds->ds_prev) | |
|
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1911 dsl_dataset_drop_ref(ds->ds_prev, ds); |
|
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1912 VERIFY(0 == dsl_dataset_get_ref(dp, |
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1913 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev)); |
| 4543 | 1914 |
|
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1915 dsl_pool_ds_snapshotted(ds, tx); |
|
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1916 |
| 4543 | 1917 spa_history_internal_log(LOG_DS_SNAPSHOT, dp->dp_spa, tx, cr, |
|
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1918 "dataset = %llu", dsobj); |
| 789 | 1919 } |
| 1920 | |
| 1921 void | |
|
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1922 dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx) |
| 789 | 1923 { |
| 1924 ASSERT(dmu_tx_is_syncing(tx)); | |
| 1925 ASSERT(ds->ds_user_ptr != NULL); | |
| 1926 ASSERT(ds->ds_phys->ds_next_snap_obj == 0); | |
| 1927 | |
| 4787 | 1928 /* |
| 1929 * in case we had to change ds_fsid_guid when we opened it, | |
| 1930 * sync it out now. | |
| 1931 */ | |
| 1932 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1933 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid; | |
| 1934 | |
| 789 | 1935 dsl_dir_dirty(ds->ds_dir, tx); |
|
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1936 dmu_objset_sync(ds->ds_user_ptr, zio, tx); |
| 789 | 1937 } |
| 1938 | |
| 1939 void | |
| 2885 | 1940 dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv) |
| 789 | 1941 { |
|
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1942 uint64_t refd, avail, uobjs, aobjs; |
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1943 |
| 2885 | 1944 dsl_dir_stats(ds->ds_dir, nv); |
| 789 | 1945 |
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1946 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs); |
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1947 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_AVAILABLE, avail); |
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1948 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFERENCED, refd); |
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1949 |
| 2885 | 1950 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION, |
| 1951 ds->ds_phys->ds_creation_time); | |
| 1952 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG, | |
| 1953 ds->ds_phys->ds_creation_txg); | |
|
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1954 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA, |
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1955 ds->ds_quota); |
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1956 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION, |
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1957 ds->ds_reserved); |
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1958 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_GUID, |
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1959 ds->ds_phys->ds_guid); |
| 789 | 1960 |
| 1961 if (ds->ds_phys->ds_next_snap_obj) { | |
| 1962 /* | |
| 1963 * This is a snapshot; override the dd's space used with | |
| 2885 | 1964 * our unique space and compression ratio. |
| 789 | 1965 */ |
| 2885 | 1966 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED, |
| 1967 ds->ds_phys->ds_unique_bytes); | |
| 1968 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO, | |
| 1969 ds->ds_phys->ds_compressed_bytes == 0 ? 100 : | |
| 1970 (ds->ds_phys->ds_uncompressed_bytes * 100 / | |
| 1971 ds->ds_phys->ds_compressed_bytes)); | |
| 789 | 1972 } |
| 1973 } | |
| 1974 | |
| 2885 | 1975 void |
| 1976 dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat) | |
| 789 | 1977 { |
| 2885 | 1978 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg; |
| 1979 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT; | |
| 5367 | 1980 stat->dds_guid = ds->ds_phys->ds_guid; |
| 2885 | 1981 if (ds->ds_phys->ds_next_snap_obj) { |
| 1982 stat->dds_is_snapshot = B_TRUE; | |
| 1983 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1; | |
|
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1984 } else { |
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1985 stat->dds_is_snapshot = B_FALSE; |
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1986 stat->dds_num_clones = 0; |
| 2885 | 1987 } |
| 1988 | |
| 1989 /* clone origin is really a dsl_dir thing... */ | |
| 5446 | 1990 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); |
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1991 if (dsl_dir_is_clone(ds->ds_dir)) { |
| 2885 | 1992 dsl_dataset_t *ods; |
| 1993 | |
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1994 VERIFY(0 == dsl_dataset_get_ref(ds->ds_dir->dd_pool, |
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1995 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods)); |
| 5367 | 1996 dsl_dataset_name(ods, stat->dds_origin); |
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1997 dsl_dataset_drop_ref(ods, FTAG); |
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1998 } else { |
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1999 stat->dds_origin[0] = '\0'; |
| 2885 | 2000 } |
| 5446 | 2001 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); |
| 2885 | 2002 } |
| 2003 | |
| 2004 uint64_t | |
| 2005 dsl_dataset_fsid_guid(dsl_dataset_t *ds) | |
| 2006 { | |
| 4787 | 2007 return (ds->ds_fsid_guid); |
| 2885 | 2008 } |
| 2009 | |
| 2010 void | |
| 2011 dsl_dataset_space(dsl_dataset_t *ds, | |
| 2012 uint64_t *refdbytesp, uint64_t *availbytesp, | |
| 2013 uint64_t *usedobjsp, uint64_t *availobjsp) | |
| 2014 { | |
| 2015 *refdbytesp = ds->ds_phys->ds_used_bytes; | |
| 2016 *availbytesp = dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE); | |
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2017 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes) |
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2018 *availbytesp += ds->ds_reserved - ds->ds_phys->ds_unique_bytes; |
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2019 if (ds->ds_quota != 0) { |
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2020 /* |
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2021 * Adjust available bytes according to refquota |
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2022 */ |
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2023 if (*refdbytesp < ds->ds_quota) |
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2024 *availbytesp = MIN(*availbytesp, |
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2025 ds->ds_quota - *refdbytesp); |
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2026 else |
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2027 *availbytesp = 0; |
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2028 } |
| 2885 | 2029 *usedobjsp = ds->ds_phys->ds_bp.blk_fill; |
| 2030 *availobjsp = DN_MAX_OBJECT - *usedobjsp; | |
| 789 | 2031 } |
| 2032 | |
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2033 boolean_t |
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2034 dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds) |
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2035 { |
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2036 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
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2037 |
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2038 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || |
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2039 dsl_pool_sync_context(dp)); |
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2040 if (ds->ds_prev == NULL) |
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2041 return (B_FALSE); |
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2042 if (ds->ds_phys->ds_bp.blk_birth > |
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2043 ds->ds_prev->ds_phys->ds_creation_txg) |
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2044 return (B_TRUE); |
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2045 return (B_FALSE); |
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2046 } |
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2047 |
| 2199 | 2048 /* ARGSUSED */ |
| 789 | 2049 static int |
| 2199 | 2050 dsl_dataset_snapshot_rename_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 789 | 2051 { |
| 2199 | 2052 dsl_dataset_t *ds = arg1; |
| 2053 char *newsnapname = arg2; | |
| 2054 dsl_dir_t *dd = ds->ds_dir; | |
| 2055 dsl_dataset_t *hds; | |
| 2056 uint64_t val; | |
| 789 | 2057 int err; |
| 2058 | |
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2059 err = dsl_dataset_hold_obj(dd->dd_pool, |
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2060 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds); |
| 789 | 2061 if (err) |
| 2062 return (err); | |
| 2063 | |
| 2199 | 2064 /* new name better not be in use */ |
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2065 err = dsl_dataset_snap_lookup(hds, newsnapname, &val); |
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2066 dsl_dataset_rele(hds, FTAG); |
| 789 | 2067 |
| 2199 | 2068 if (err == 0) |
| 2069 err = EEXIST; | |
| 2070 else if (err == ENOENT) | |
| 2071 err = 0; | |
| 4007 | 2072 |
| 2073 /* dataset name + 1 for the "@" + the new snapshot name must fit */ | |
| 2074 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN) | |
| 2075 err = ENAMETOOLONG; | |
| 2076 | |
| 2199 | 2077 return (err); |
| 2078 } | |
| 789 | 2079 |
| 2199 | 2080 static void |
| 4543 | 2081 dsl_dataset_snapshot_rename_sync(void *arg1, void *arg2, |
| 2082 cred_t *cr, dmu_tx_t *tx) | |
| 2199 | 2083 { |
| 2084 dsl_dataset_t *ds = arg1; | |
| 4543 | 2085 const char *newsnapname = arg2; |
| 2199 | 2086 dsl_dir_t *dd = ds->ds_dir; |
| 2087 objset_t *mos = dd->dd_pool->dp_meta_objset; | |
| 2088 dsl_dataset_t *hds; | |
| 2089 int err; | |
| 789 | 2090 |
| 2199 | 2091 ASSERT(ds->ds_phys->ds_next_snap_obj != 0); |
| 789 | 2092 |
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2093 VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, |
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2094 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds)); |
| 789 | 2095 |
| 2199 | 2096 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
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2097 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx); |
| 789 | 2098 ASSERT3U(err, ==, 0); |
| 2199 | 2099 mutex_enter(&ds->ds_lock); |
| 2100 (void) strcpy(ds->ds_snapname, newsnapname); | |
| 2101 mutex_exit(&ds->ds_lock); | |
| 2102 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj, | |
| 2103 ds->ds_snapname, 8, 1, &ds->ds_object, tx); | |
| 789 | 2104 ASSERT3U(err, ==, 0); |
| 2105 | |
| 4543 | 2106 spa_history_internal_log(LOG_DS_RENAME, dd->dd_pool->dp_spa, tx, |
| 2107 cr, "dataset = %llu", ds->ds_object); | |
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2108 dsl_dataset_rele(hds, FTAG); |
| 789 | 2109 } |
| 2110 | |
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2111 struct renamesnaparg { |
| 4007 | 2112 dsl_sync_task_group_t *dstg; |
| 2113 char failed[MAXPATHLEN]; | |
| 2114 char *oldsnap; | |
| 2115 char *newsnap; | |
| 2116 }; | |
| 2117 | |
| 2118 static int | |
| 2119 dsl_snapshot_rename_one(char *name, void *arg) | |
| 2120 { | |
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2121 struct renamesnaparg *ra = arg; |
| 4007 | 2122 dsl_dataset_t *ds = NULL; |
| 2123 char *cp; | |
| 2124 int err; | |
| 2125 | |
| 2126 cp = name + strlen(name); | |
| 2127 *cp = '@'; | |
| 2128 (void) strcpy(cp + 1, ra->oldsnap); | |
| 4543 | 2129 |
| 2130 /* | |
| 2131 * For recursive snapshot renames the parent won't be changing | |
| 2132 * so we just pass name for both the to/from argument. | |
| 2133 */ | |
|
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2134 err = zfs_secpolicy_rename_perms(name, name, CRED()); |
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2135 if (err == ENOENT) { |
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2136 return (0); |
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2137 } else if (err) { |
| 4543 | 2138 (void) strcpy(ra->failed, name); |
| 2139 return (err); | |
| 2140 } | |
| 2141 | |
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2142 #ifdef _KERNEL |
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2143 /* |
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2144 * For all filesystems undergoing rename, we'll need to unmount it. |
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2145 */ |
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2146 (void) zfs_unmount_snap(name, NULL); |
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2147 #endif |
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2148 err = dsl_dataset_hold(name, ra->dstg, &ds); |
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2149 *cp = '\0'; |
| 4007 | 2150 if (err == ENOENT) { |
| 2151 return (0); | |
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2152 } else if (err) { |
| 4007 | 2153 (void) strcpy(ra->failed, name); |
| 2154 return (err); | |
| 2155 } | |
| 2156 | |
| 2157 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check, | |
| 2158 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0); | |
| 2159 | |
| 2160 return (0); | |
| 2161 } | |
| 2162 | |
| 2163 static int | |
| 2164 dsl_recursive_rename(char *oldname, const char *newname) | |
| 2165 { | |
| 2166 int err; | |
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2167 struct renamesnaparg *ra; |
| 4007 | 2168 dsl_sync_task_t *dst; |
| 2169 spa_t *spa; | |
| 2170 char *cp, *fsname = spa_strdup(oldname); | |
| 2171 int len = strlen(oldname); | |
| 2172 | |
| 2173 /* truncate the snapshot name to get the fsname */ | |
| 2174 cp = strchr(fsname, '@'); | |
| 2175 *cp = '\0'; | |
| 2176 | |
|
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|
2177 err = spa_open(fsname, &spa, FTAG); |
| 4007 | 2178 if (err) { |
| 2179 kmem_free(fsname, len + 1); | |
| 2180 return (err); | |
| 2181 } | |
|
5326
6752aa2bd5bc
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|
2182 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP); |
| 4007 | 2183 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); |
| 2184 | |
| 2185 ra->oldsnap = strchr(oldname, '@') + 1; | |
| 2186 ra->newsnap = strchr(newname, '@') + 1; | |
| 2187 *ra->failed = '\0'; | |
| 2188 | |
| 2189 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra, | |
| 2190 DS_FIND_CHILDREN); | |
| 2191 kmem_free(fsname, len + 1); | |
| 2192 | |
| 2193 if (err == 0) { | |
| 2194 err = dsl_sync_task_group_wait(ra->dstg); | |
| 2195 } | |
| 2196 | |
| 2197 for (dst = list_head(&ra->dstg->dstg_tasks); dst; | |
| 2198 dst = list_next(&ra->dstg->dstg_tasks, dst)) { | |
| 2199 dsl_dataset_t *ds = dst->dst_arg1; | |
| 2200 if (dst->dst_err) { | |
| 2201 dsl_dir_name(ds->ds_dir, ra->failed); | |
|
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1a9b4fbc0d2a
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diff
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|
2202 (void) strcat(ra->failed, "@"); |
|
1a9b4fbc0d2a
6479884 want 'zfs rename -r' to recursively rename snapshots (fix lint)
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diff
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|
2203 (void) strcat(ra->failed, ra->newsnap); |
| 4007 | 2204 } |
|
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|
2205 dsl_dataset_rele(ds, ra->dstg); |
| 4007 | 2206 } |
| 2207 | |
| 4543 | 2208 if (err) |
| 2209 (void) strcpy(oldname, ra->failed); | |
| 4007 | 2210 |
| 2211 dsl_sync_task_group_destroy(ra->dstg); | |
|
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|
2212 kmem_free(ra, sizeof (struct renamesnaparg)); |
| 4007 | 2213 spa_close(spa, FTAG); |
| 2214 return (err); | |
| 2215 } | |
| 2216 | |
|
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diff
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|
2217 static int |
|
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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|
2218 dsl_valid_rename(char *oldname, void *arg) |
|
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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|
2219 { |
|
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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|
2220 int delta = *(int *)arg; |
|
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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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|
2221 |
|
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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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|
2222 if (strlen(oldname) + delta >= MAXNAMELEN) |
|
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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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|
2223 return (ENAMETOOLONG); |
|
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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|
2224 |
|
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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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|
2225 return (0); |
|
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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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|
2226 } |
|
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diff
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|
2227 |
| 789 | 2228 #pragma weak dmu_objset_rename = dsl_dataset_rename |
| 2229 int | |
|
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|
2230 dsl_dataset_rename(char *oldname, const char *newname, boolean_t recursive) |
| 789 | 2231 { |
| 2232 dsl_dir_t *dd; | |
| 2199 | 2233 dsl_dataset_t *ds; |
| 789 | 2234 const char *tail; |
| 2235 int err; | |
| 2236 | |
| 2199 | 2237 err = dsl_dir_open(oldname, FTAG, &dd, &tail); |
| 1544 | 2238 if (err) |
| 2239 return (err); | |
|
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41a0783dde17
6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
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diff
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|
2240 /* |
|
41a0783dde17
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diff
changeset
|
2241 * If there are more than 2 references there may be holds |
|
41a0783dde17
6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
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diff
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|
2242 * hanging around that haven't been cleared out yet. |
|
41a0783dde17
6784757 zfs rename occasionally fails with ebusy
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diff
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|
2243 */ |
|
41a0783dde17
6784757 zfs rename occasionally fails with ebusy
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diff
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|
2244 if (dmu_buf_refcount(dd->dd_dbuf) > 2) |
|
41a0783dde17
6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
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diff
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|
2245 txg_wait_synced(dd->dd_pool, 0); |
| 789 | 2246 if (tail == NULL) { |
|
4569
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diff
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|
2247 int delta = strlen(newname) - strlen(oldname); |
|
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|
2248 |
|
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|
2249 /* if we're growing, validate child name lengths */ |
|
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|
2250 if (delta > 0) |
|
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diff
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|
2251 err = dmu_objset_find(oldname, dsl_valid_rename, |
|
e80d40447f27
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diff
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|
2252 &delta, DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); |
|
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|
2253 |
|
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|
2254 if (!err) |
|
e80d40447f27
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diff
changeset
|
2255 err = dsl_dir_rename(dd, newname); |
| 789 | 2256 dsl_dir_close(dd, FTAG); |
| 2257 return (err); | |
| 2258 } | |
| 2259 if (tail[0] != '@') { | |
| 2260 /* the name ended in a nonexistant component */ | |
| 2261 dsl_dir_close(dd, FTAG); | |
| 2262 return (ENOENT); | |
| 2263 } | |
| 2264 | |
| 2199 | 2265 dsl_dir_close(dd, FTAG); |
| 2266 | |
| 2267 /* new name must be snapshot in same filesystem */ | |
| 2268 tail = strchr(newname, '@'); | |
| 2269 if (tail == NULL) | |
| 2270 return (EINVAL); | |
| 2271 tail++; | |
| 2272 if (strncmp(oldname, newname, tail - newname) != 0) | |
| 2273 return (EXDEV); | |
| 789 | 2274 |
| 4007 | 2275 if (recursive) { |
| 2276 err = dsl_recursive_rename(oldname, newname); | |
| 2277 } else { | |
|
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|
2278 err = dsl_dataset_hold(oldname, FTAG, &ds); |
| 4007 | 2279 if (err) |
| 2280 return (err); | |
| 2199 | 2281 |
| 4007 | 2282 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 2283 dsl_dataset_snapshot_rename_check, | |
| 2284 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1); | |
| 2199 | 2285 |
|
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|
2286 dsl_dataset_rele(ds, FTAG); |
| 4007 | 2287 } |
| 2199 | 2288 |
| 789 | 2289 return (err); |
| 2290 } | |
| 2082 | 2291 |
|
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|
2292 struct promotenode { |
|
6689
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diff
changeset
|
2293 list_node_t link; |
|
47572a2f5e73
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6643
diff
changeset
|
2294 dsl_dataset_t *ds; |
|
47572a2f5e73
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|
2295 }; |
|
47572a2f5e73
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diff
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|
2296 |
| 2199 | 2297 struct promotearg { |
|
7390
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7385
diff
changeset
|
2298 list_t shared_snaps, origin_snaps, clone_snaps; |
|
6d408f0a5fbd
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7385
diff
changeset
|
2299 dsl_dataset_t *origin_origin, *origin_head; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2300 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap; |
| 2199 | 2301 }; |
| 2302 | |
|
7390
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PSARC/2008/518 ZFS space accounting enhancements
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diff
changeset
|
2303 static int snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep); |
|
6d408f0a5fbd
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7385
diff
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|
2304 |
| 4543 | 2305 /* ARGSUSED */ |
| 2082 | 2306 static int |
| 2199 | 2307 dsl_dataset_promote_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 2082 | 2308 { |
| 2199 | 2309 dsl_dataset_t *hds = arg1; |
| 2310 struct promotearg *pa = arg2; | |
|
7390
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PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2311 struct promotenode *snap = list_head(&pa->shared_snaps); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
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|
2312 dsl_dataset_t *origin_ds = snap->ds; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
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|
2313 int err; |
| 2199 | 2314 |
|
7046
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6343667 scrub/resilver has to start over when a snapshot is taken
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diff
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|
2315 /* Check that it is a real clone */ |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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diff
changeset
|
2316 if (!dsl_dir_is_clone(hds->ds_dir)) |
| 2082 | 2317 return (EINVAL); |
| 2318 | |
| 2199 | 2319 /* Since this is so expensive, don't do the preliminary check */ |
| 2320 if (!dmu_tx_is_syncing(tx)) | |
| 2321 return (0); | |
| 2322 | |
|
6689
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diff
changeset
|
2323 if (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE) |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
2324 return (EXDEV); |
| 2082 | 2325 |
| 5367 | 2326 /* compute origin's new unique space */ |
|
7390
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7385
diff
changeset
|
2327 snap = list_tail(&pa->clone_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
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7385
diff
changeset
|
2328 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2329 err = bplist_space_birthrange(&snap->ds->ds_deadlist, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2330 origin_ds->ds_phys->ds_prev_snap_txg, UINT64_MAX, &pa->unique); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2331 if (err) |
|
6689
47572a2f5e73
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6643
diff
changeset
|
2332 return (err); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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|
2333 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
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|
2334 /* |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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diff
changeset
|
2335 * Walk the snapshots that we are moving |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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|
2336 * |
|
7390
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|
2337 * Compute space to transfer. Consider the incremental changes |
|
6d408f0a5fbd
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diff
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|
2338 * to used for each snapshot: |
|
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diff
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|
2339 * (my used) = (prev's used) + (blocks born) - (blocks killed) |
|
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|
2340 * So each snapshot gave birth to: |
|
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changeset
|
2341 * (blocks born) = (my used) - (prev's used) + (blocks killed) |
|
6689
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|
2342 * So a sequence would look like: |
|
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|
2343 * (uN - u(N-1) + kN) + ... + (u1 - u0 + k1) + (u0 - 0 + k0) |
|
6689
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|
2344 * Which simplifies to: |
|
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|
2345 * uN + kN + kN-1 + ... + k1 + k0 |
|
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|
2346 * Note however, if we stop before we reach the ORIGIN we get: |
|
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|
2347 * uN + kN + kN-1 + ... + kM - uM-1 |
|
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|
2348 */ |
|
47572a2f5e73
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changeset
|
2349 pa->used = origin_ds->ds_phys->ds_used_bytes; |
|
47572a2f5e73
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|
2350 pa->comp = origin_ds->ds_phys->ds_compressed_bytes; |
|
47572a2f5e73
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|
2351 pa->uncomp = origin_ds->ds_phys->ds_uncompressed_bytes; |
|
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|
2352 for (snap = list_head(&pa->shared_snaps); snap; |
|
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|
2353 snap = list_next(&pa->shared_snaps, snap)) { |
| 2082 | 2354 uint64_t val, dlused, dlcomp, dluncomp; |
|
6689
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|
2355 dsl_dataset_t *ds = snap->ds; |
| 2082 | 2356 |
| 2357 /* Check that the snapshot name does not conflict */ | |
|
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|
2358 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
6689
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changeset
|
2359 err = dsl_dataset_snap_lookup(hds, ds->ds_snapname, &val); |
|
47572a2f5e73
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|
2360 if (err == 0) |
|
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|
2361 return (EEXIST); |
|
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|
2362 if (err != ENOENT) |
|
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|
2363 return (err); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2364 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2365 /* The very first snapshot does not have a deadlist */ |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2366 if (ds->ds_phys->ds_prev_snap_obj == 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2367 continue; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2368 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2369 if (err = bplist_space(&ds->ds_deadlist, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2370 &dlused, &dlcomp, &dluncomp)) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2371 return (err); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2372 pa->used += dlused; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2373 pa->comp += dlcomp; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2374 pa->uncomp += dluncomp; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2375 } |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2376 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2377 /* |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2378 * If we are a clone of a clone then we never reached ORIGIN, |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2379 * so we need to subtract out the clone origin's used space. |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2380 */ |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2381 if (pa->origin_origin) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2382 pa->used -= pa->origin_origin->ds_phys->ds_used_bytes; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2383 pa->comp -= pa->origin_origin->ds_phys->ds_compressed_bytes; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2384 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes; |
| 2082 | 2385 } |
| 2386 | |
| 2387 /* Check that there is enough space here */ | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2388 err = dsl_dir_transfer_possible(origin_ds->ds_dir, hds->ds_dir, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2389 pa->used); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2390 if (err) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2391 return (err); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2392 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2393 /* |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2394 * Compute the amounts of space that will be used by snapshots |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2395 * after the promotion (for both origin and clone). For each, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2396 * it is the amount of space that will be on all of their |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2397 * deadlists (that was not born before their new origin). |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2398 */ |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2399 if (hds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2400 uint64_t space; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2401 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2402 /* |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2403 * Note, typically this will not be a clone of a clone, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2404 * so snap->ds->ds_origin_txg will be < TXG_INITIAL, so |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2405 * these snaplist_space() -> bplist_space_birthrange() |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2406 * calls will be fast because they do not have to |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2407 * iterate over all bps. |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2408 */ |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2409 snap = list_head(&pa->origin_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2410 err = snaplist_space(&pa->shared_snaps, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2411 snap->ds->ds_origin_txg, &pa->cloneusedsnap); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2412 if (err) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2413 return (err); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2414 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2415 err = snaplist_space(&pa->clone_snaps, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2416 snap->ds->ds_origin_txg, &space); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2417 if (err) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2418 return (err); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2419 pa->cloneusedsnap += space; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2420 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2421 if (origin_ds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2422 err = snaplist_space(&pa->origin_snaps, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2423 origin_ds->ds_phys->ds_creation_txg, &pa->originusedsnap); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2424 if (err) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2425 return (err); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2426 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2427 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2428 return (0); |
| 2199 | 2429 } |
| 2082 | 2430 |
| 2199 | 2431 static void |
| 4543 | 2432 dsl_dataset_promote_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 2433 { |
| 2434 dsl_dataset_t *hds = arg1; | |
| 2435 struct promotearg *pa = arg2; | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2436 struct promotenode *snap = list_head(&pa->shared_snaps); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2437 dsl_dataset_t *origin_ds = snap->ds; |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2438 dsl_dataset_t *origin_head; |
| 2199 | 2439 dsl_dir_t *dd = hds->ds_dir; |
| 2440 dsl_pool_t *dp = hds->ds_dir->dd_pool; | |
| 5367 | 2441 dsl_dir_t *odd = NULL; |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2442 uint64_t oldnext_obj; |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2443 int64_t delta; |
| 2199 | 2444 |
| 2445 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE)); | |
| 2446 | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2447 snap = list_head(&pa->origin_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2448 origin_head = snap->ds; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2449 |
| 2417 | 2450 /* |
| 5367 | 2451 * We need to explicitly open odd, since origin_ds's dd will be |
| 2417 | 2452 * changing. |
| 2453 */ | |
| 5367 | 2454 VERIFY(0 == dsl_dir_open_obj(dp, origin_ds->ds_dir->dd_object, |
| 2455 NULL, FTAG, &odd)); | |
| 2082 | 2456 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2457 /* change origin's next snap */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2458 dmu_buf_will_dirty(origin_ds->ds_dbuf, tx); |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2459 oldnext_obj = origin_ds->ds_phys->ds_next_snap_obj; |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2460 snap = list_tail(&pa->clone_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2461 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2462 origin_ds->ds_phys->ds_next_snap_obj = snap->ds->ds_object; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2463 |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2464 /* change the origin's next clone */ |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2465 if (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
|
2466 VERIFY3U(0, ==, zap_remove_int(dp->dp_meta_objset, |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2467 origin_ds->ds_phys->ds_next_clones_obj, |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2468 origin_ds->ds_phys->ds_next_snap_obj, tx)); |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2469 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
|
2470 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
|
2471 oldnext_obj, tx)); |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2472 } |
|
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2473 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2474 /* change origin */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2475 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2476 ASSERT3U(dd->dd_phys->dd_origin_obj, ==, origin_ds->ds_object); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2477 dd->dd_phys->dd_origin_obj = odd->dd_phys->dd_origin_obj; |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2478 hds->ds_origin_txg = origin_head->ds_origin_txg; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2479 dmu_buf_will_dirty(odd->dd_dbuf, tx); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2480 odd->dd_phys->dd_origin_obj = origin_ds->ds_object; |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2481 origin_head->ds_origin_txg = origin_ds->ds_phys->ds_creation_txg; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2482 |
| 2082 | 2483 /* move snapshots to this dir */ |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2484 for (snap = list_head(&pa->shared_snaps); snap; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2485 snap = list_next(&pa->shared_snaps, snap)) { |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2486 dsl_dataset_t *ds = snap->ds; |
| 2082 | 2487 |
|
7237
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
2488 /* unregister props as dsl_dir is changing */ |
|
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
2489 if (ds->ds_user_ptr) { |
|
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
2490 ds->ds_user_evict_func(ds, ds->ds_user_ptr); |
|
f47d41541b14
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ek110237
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diff
changeset
|
2491 ds->ds_user_ptr = NULL; |
|
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7077
diff
changeset
|
2492 } |
| 2082 | 2493 /* move snap name entry */ |
|
7390
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diff
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|
2494 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2495 VERIFY(0 == dsl_dataset_snap_remove(origin_head, |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2496 ds->ds_snapname, tx)); |
| 2199 | 2497 VERIFY(0 == zap_add(dp->dp_meta_objset, |
| 2082 | 2498 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname, |
| 2499 8, 1, &ds->ds_object, tx)); | |
| 2500 /* change containing dsl_dir */ | |
| 2501 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 5367 | 2502 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object); |
| 2082 | 2503 ds->ds_phys->ds_dir_obj = dd->dd_object; |
| 5367 | 2504 ASSERT3P(ds->ds_dir, ==, odd); |
| 2082 | 2505 dsl_dir_close(ds->ds_dir, ds); |
| 2199 | 2506 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object, |
| 2082 | 2507 NULL, ds, &ds->ds_dir)); |
| 2508 | |
| 2509 ASSERT3U(dsl_prop_numcb(ds), ==, 0); | |
|
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diff
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|
2510 } |
|
6d408f0a5fbd
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diff
changeset
|
2511 |
|
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diff
changeset
|
2512 /* |
|
6d408f0a5fbd
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diff
changeset
|
2513 * Change space accounting. |
|
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diff
changeset
|
2514 * Note, pa->*usedsnap and dd_used_breakdown[SNAP] will either |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2515 * both be valid, or both be 0 (resulting in delta == 0). This |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2516 * is true for each of {clone,origin} independently. |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2517 */ |
|
6d408f0a5fbd
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diff
changeset
|
2518 |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2519 delta = pa->cloneusedsnap - |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2520 dd->dd_phys->dd_used_breakdown[DD_USED_SNAP]; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2521 ASSERT3S(delta, >=, 0); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2522 ASSERT3U(pa->used, >=, delta); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2523 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
|
2524 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
|
2525 pa->used - delta, pa->comp, pa->uncomp, tx); |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2526 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2527 delta = pa->originusedsnap - |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2528 odd->dd_phys->dd_used_breakdown[DD_USED_SNAP]; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2529 ASSERT3S(delta, <=, 0); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2530 ASSERT3U(pa->used, >=, -delta); |
|
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2531 dsl_dir_diduse_space(odd, 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
|
2532 dsl_dir_diduse_space(odd, DD_USED_HEAD, |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2533 -pa->used - delta, -pa->comp, -pa->uncomp, tx); |
|
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7385
diff
changeset
|
2534 |
| 5367 | 2535 origin_ds->ds_phys->ds_unique_bytes = pa->unique; |
| 2082 | 2536 |
| 4543 | 2537 /* log history record */ |
| 2538 spa_history_internal_log(LOG_DS_PROMOTE, dd->dd_pool->dp_spa, tx, | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2539 cr, "dataset = %llu", hds->ds_object); |
| 4543 | 2540 |
| 5367 | 2541 dsl_dir_close(odd, FTAG); |
| 2082 | 2542 } |
| 2543 | |
|
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2544 static char *snaplist_tag = "snaplist"; |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2545 /* |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2546 * Make a list of dsl_dataset_t's for the snapshots between first_obj |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2547 * (exclusive) and last_obj (inclusive). The list will be in reverse |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2548 * order (last_obj will be the list_head()). If first_obj == 0, do all |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2549 * snapshots back to this dataset's origin. |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2550 */ |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
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diff
changeset
|
2551 static int |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2552 snaplist_make(dsl_pool_t *dp, boolean_t own, |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2553 uint64_t first_obj, uint64_t last_obj, list_t *l) |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2554 { |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2555 uint64_t obj = last_obj; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2556 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2557 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock)); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2558 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2559 list_create(l, sizeof (struct promotenode), |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2560 offsetof(struct promotenode, link)); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2561 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2562 while (obj != first_obj) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2563 dsl_dataset_t *ds; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2564 struct promotenode *snap; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2565 int err; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2566 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2567 if (own) { |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2568 err = dsl_dataset_own_obj(dp, obj, |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2569 0, snaplist_tag, &ds); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2570 if (err == 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2571 dsl_dataset_make_exclusive(ds, snaplist_tag); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2572 } else { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2573 err = dsl_dataset_hold_obj(dp, obj, snaplist_tag, &ds); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2574 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2575 if (err == ENOENT) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2576 /* lost race with snapshot destroy */ |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2577 struct promotenode *last = list_tail(l); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2578 ASSERT(obj != last->ds->ds_phys->ds_prev_snap_obj); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2579 obj = last->ds->ds_phys->ds_prev_snap_obj; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2580 continue; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2581 } else if (err) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2582 return (err); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2583 } |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2584 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2585 if (first_obj == 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2586 first_obj = 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
|
2587 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2588 snap = kmem_alloc(sizeof (struct promotenode), KM_SLEEP); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2589 snap->ds = ds; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2590 list_insert_tail(l, snap); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2591 obj = ds->ds_phys->ds_prev_snap_obj; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2592 } |
|
6d408f0a5fbd
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7385
diff
changeset
|
2593 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2594 return (0); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2595 } |
|
6d408f0a5fbd
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7385
diff
changeset
|
2596 |
|
6d408f0a5fbd
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diff
changeset
|
2597 static int |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2598 snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2599 { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2600 struct promotenode *snap; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2601 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2602 *spacep = 0; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2603 for (snap = list_head(l); snap; snap = list_next(l, snap)) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2604 uint64_t used; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2605 int err = bplist_space_birthrange(&snap->ds->ds_deadlist, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2606 mintxg, UINT64_MAX, &used); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2607 if (err) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2608 return (err); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2609 *spacep += used; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2610 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2611 return (0); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2612 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
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7385
diff
changeset
|
2613 |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2614 static void |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2615 snaplist_destroy(list_t *l, boolean_t own) |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2616 { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2617 struct promotenode *snap; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2618 |
|
8779
f164e0e90508
6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents:
8746
diff
changeset
|
2619 if (!l || !list_link_active(&l->list_head)) |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2620 return; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2621 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2622 while ((snap = list_tail(l)) != NULL) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2623 list_remove(l, snap); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2624 if (own) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2625 dsl_dataset_disown(snap->ds, snaplist_tag); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2626 else |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2627 dsl_dataset_rele(snap->ds, snaplist_tag); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2628 kmem_free(snap, sizeof (struct promotenode)); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2629 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2630 list_destroy(l); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2631 } |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2632 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2633 /* |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2634 * Promote a clone. Nomenclature note: |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2635 * "clone" or "cds": the original clone which is being promoted |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2636 * "origin" or "ods": the snapshot which is originally clone's origin |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2637 * "origin head" or "ohds": the dataset which is the head |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2638 * (filesystem/volume) for the origin |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2639 * "origin origin": the origin of the origin's filesystem (typically |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2640 * NULL, indicating that the clone is not a clone of a clone). |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2641 */ |
| 2082 | 2642 int |
| 2643 dsl_dataset_promote(const char *name) | |
| 2644 { | |
| 2645 dsl_dataset_t *ds; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2646 dsl_dir_t *dd; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2647 dsl_pool_t *dp; |
| 2082 | 2648 dmu_object_info_t doi; |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2649 struct promotearg pa = { 0 }; |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2650 struct promotenode *snap; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2651 int err; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2652 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2653 err = dsl_dataset_hold(name, FTAG, &ds); |
| 2082 | 2654 if (err) |
| 2655 return (err); | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2656 dd = ds->ds_dir; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2657 dp = dd->dd_pool; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2658 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2659 err = dmu_object_info(dp->dp_meta_objset, |
| 2082 | 2660 ds->ds_phys->ds_snapnames_zapobj, &doi); |
| 2661 if (err) { | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2662 dsl_dataset_rele(ds, FTAG); |
| 2082 | 2663 return (err); |
| 2664 } | |
| 2665 | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2666 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
|
2667 dsl_dataset_rele(ds, FTAG); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2668 return (EINVAL); |
|
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 |
| 2082 | 2671 /* |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2672 * 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
|
2673 * 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
|
2674 * 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
|
2675 * namespace. |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2676 */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2677 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
|
2678 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2679 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
|
2680 &pa.shared_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2681 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2682 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2683 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2684 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
|
2685 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2686 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2687 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2688 snap = list_head(&pa.shared_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2689 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
|
2690 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
|
2691 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
|
2692 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2693 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2694 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2695 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
|
2696 err = dsl_dataset_own_obj(dp, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2697 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
|
2698 0, FTAG, &pa.origin_origin); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2699 if (err != 0) |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2700 goto out; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2701 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2702 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2703 out: |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2704 rw_exit(&dp->dp_config_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2705 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2706 /* |
| 2082 | 2707 * Add in 128x the snapnames zapobj size, since we will be moving |
| 2708 * a bunch of snapnames to the promoted ds, and dirtying their | |
| 2709 * bonus buffers. | |
| 2710 */ | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2711 if (err == 0) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2712 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
|
2713 dsl_dataset_promote_sync, ds, &pa, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2714 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
|
2715 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2716 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2717 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
|
2718 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
|
2719 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
|
2720 if (pa.origin_origin) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2721 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
|
2722 dsl_dataset_rele(ds, FTAG); |
| 2082 | 2723 return (err); |
| 2724 } | |
| 3912 | 2725 |
| 5367 | 2726 struct cloneswaparg { |
| 2727 dsl_dataset_t *cds; /* clone dataset */ | |
| 2728 dsl_dataset_t *ohds; /* origin's head dataset */ | |
| 2729 boolean_t force; | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2730 int64_t unused_refres_delta; /* change in unconsumed refreservation */ |
| 5367 | 2731 }; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2732 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2733 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2734 static int |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2735 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
|
2736 { |
| 5367 | 2737 struct cloneswaparg *csa = arg1; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2738 |
| 5367 | 2739 /* they should both be heads */ |
| 2740 if (dsl_dataset_is_snapshot(csa->cds) || | |
| 2741 dsl_dataset_is_snapshot(csa->ohds)) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2742 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2743 |
| 5367 | 2744 /* the branch point should be just before them */ |
| 2745 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
|
2746 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2747 |
| 5367 | 2748 /* cds should be the clone */ |
| 2749 if (csa->cds->ds_prev->ds_phys->ds_next_snap_obj != | |
| 2750 csa->ohds->ds_object) | |
| 2751 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2752 |
| 5367 | 2753 /* the clone should be a child of the origin */ |
| 2754 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir) | |
| 2755 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2756 |
| 5367 | 2757 /* ohds shouldn't be modified unless 'force' */ |
| 2758 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds)) | |
| 2759 return (ETXTBSY); | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
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5475
diff
changeset
|
2760 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2761 /* adjust amount of any unconsumed refreservation */ |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2762 csa->unused_refres_delta = |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2763 (int64_t)MIN(csa->ohds->ds_reserved, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2764 csa->ohds->ds_phys->ds_unique_bytes) - |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2765 (int64_t)MIN(csa->ohds->ds_reserved, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2766 csa->cds->ds_phys->ds_unique_bytes); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2767 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2768 if (csa->unused_refres_delta > 0 && |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2769 csa->unused_refres_delta > |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2770 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
|
2771 return (ENOSPC); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2772 |
| 5367 | 2773 return (0); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2774 } |
|
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 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2777 static void |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2778 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
|
2779 { |
| 5367 | 2780 struct cloneswaparg *csa = arg1; |
| 2781 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
|
2782 |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2783 ASSERT(csa->cds->ds_reserved == 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2784 ASSERT(csa->cds->ds_quota == csa->ohds->ds_quota); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
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diff
changeset
|
2785 |
| 5367 | 2786 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx); |
| 2787 dmu_buf_will_dirty(csa->ohds->ds_dbuf, tx); | |
| 2788 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
|
2789 |
| 5367 | 2790 if (csa->cds->ds_user_ptr != NULL) { |
| 2791 csa->cds->ds_user_evict_func(csa->cds, csa->cds->ds_user_ptr); | |
| 2792 csa->cds->ds_user_ptr = NULL; | |
| 2793 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2794 |
| 5367 | 2795 if (csa->ohds->ds_user_ptr != NULL) { |
| 2796 csa->ohds->ds_user_evict_func(csa->ohds, | |
| 2797 csa->ohds->ds_user_ptr); | |
| 2798 csa->ohds->ds_user_ptr = NULL; | |
| 2799 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2800 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2801 /* reset origin's unique bytes */ |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2802 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
|
2803 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
|
2804 &csa->cds->ds_prev->ds_phys->ds_unique_bytes)); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2805 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2806 /* swap blkptrs */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2807 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2808 blkptr_t tmp; |
| 5367 | 2809 tmp = csa->ohds->ds_phys->ds_bp; |
| 2810 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp; | |
| 2811 csa->cds->ds_phys->ds_bp = tmp; | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2812 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2813 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2814 /* set dd_*_bytes */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2815 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2816 int64_t dused, dcomp, duncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2817 uint64_t cdl_used, cdl_comp, cdl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2818 uint64_t odl_used, odl_comp, odl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2819 |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2820 ASSERT3U(csa->cds->ds_dir->dd_phys-> |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2821 dd_used_breakdown[DD_USED_SNAP], ==, 0); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2822 |
| 5367 | 2823 VERIFY(0 == bplist_space(&csa->cds->ds_deadlist, &cdl_used, |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2824 &cdl_comp, &cdl_uncomp)); |
| 5367 | 2825 VERIFY(0 == bplist_space(&csa->ohds->ds_deadlist, &odl_used, |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2826 &odl_comp, &odl_uncomp)); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2827 |
| 5367 | 2828 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used - |
| 2829 (csa->ohds->ds_phys->ds_used_bytes + odl_used); | |
| 2830 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp - | |
| 2831 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp); | |
| 2832 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes + | |
| 2833 cdl_uncomp - | |
| 2834 (csa->ohds->ds_phys->ds_uncompressed_bytes + odl_uncomp); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2835 |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2836 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_HEAD, |
| 5367 | 2837 dused, dcomp, duncomp, tx); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2838 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD, |
| 5367 | 2839 -dused, -dcomp, -duncomp, tx); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2840 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2841 /* |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2842 * 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
|
2843 * 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
|
2844 * 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
|
2845 * changing that affects the snapused). |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2846 */ |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2847 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
|
2848 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
|
2849 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
|
2850 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
|
2851 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
|
2852 DD_USED_HEAD, DD_USED_SNAP, tx); |
| 5367 | 2853 } |
| 2854 | |
| 2855 #define SWITCH64(x, y) \ | |
| 2856 { \ | |
| 2857 uint64_t __tmp = (x); \ | |
| 2858 (x) = (y); \ | |
| 2859 (y) = __tmp; \ | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2860 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2861 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2862 /* swap ds_*_bytes */ |
| 5367 | 2863 SWITCH64(csa->ohds->ds_phys->ds_used_bytes, |
| 2864 csa->cds->ds_phys->ds_used_bytes); | |
| 2865 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes, | |
| 2866 csa->cds->ds_phys->ds_compressed_bytes); | |
| 2867 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes, | |
| 2868 csa->cds->ds_phys->ds_uncompressed_bytes); | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2869 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2870 csa->cds->ds_phys->ds_unique_bytes); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2871 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2872 /* 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
|
2873 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
|
2874 csa->unused_refres_delta, 0, 0, tx); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
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5094
diff
changeset
|
2875 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2876 /* swap deadlists */ |
| 5367 | 2877 bplist_close(&csa->cds->ds_deadlist); |
| 2878 bplist_close(&csa->ohds->ds_deadlist); | |
| 2879 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj, | |
| 2880 csa->cds->ds_phys->ds_deadlist_obj); | |
| 2881 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset, | |
| 2882 csa->cds->ds_phys->ds_deadlist_obj)); | |
| 2883 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset, | |
| 2884 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
|
2885 |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
2886 dsl_pool_ds_clone_swapped(csa->ohds, csa->cds, tx); |
|
5326
6752aa2bd5bc
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5094
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changeset
|
2887 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2888 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
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5094
diff
changeset
|
2889 /* |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2890 * 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
|
2891 * 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
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5094
diff
changeset
|
2892 */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
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5094
diff
changeset
|
2893 int |
| 5367 | 2894 dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head, |
| 2895 boolean_t force) | |
|
5326
6752aa2bd5bc
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5094
diff
changeset
|
2896 { |
| 5367 | 2897 struct cloneswaparg csa; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2898 int error; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2899 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2900 ASSERT(clone->ds_owner); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2901 ASSERT(origin_head->ds_owner); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2902 retry: |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2903 /* Need exclusive access for the swap */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2904 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
|
2905 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
|
2906 rw_exit(&clone->ds_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2907 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
|
2908 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
|
2909 rw_exit(&origin_head->ds_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2910 goto retry; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2911 } |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2912 } |
| 5367 | 2913 csa.cds = clone; |
| 2914 csa.ohds = origin_head; | |
| 2915 csa.force = force; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2916 error = dsl_sync_task_do(clone->ds_dir->dd_pool, |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2917 dsl_dataset_clone_swap_check, |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2918 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
|
2919 return (error); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2920 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2921 |
| 3912 | 2922 /* |
| 2923 * Given a pool name and a dataset object number in that pool, | |
| 2924 * return the name of that dataset. | |
| 2925 */ | |
| 2926 int | |
| 2927 dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf) | |
| 2928 { | |
| 2929 spa_t *spa; | |
| 2930 dsl_pool_t *dp; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2931 dsl_dataset_t *ds; |
| 3912 | 2932 int error; |
| 2933 | |
| 2934 if ((error = spa_open(pname, &spa, FTAG)) != 0) | |
| 2935 return (error); | |
| 2936 dp = spa_get_dsl(spa); | |
| 2937 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
|
2938 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
|
2939 dsl_dataset_name(ds, buf); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2940 dsl_dataset_rele(ds, FTAG); |
| 3912 | 2941 } |
| 2942 rw_exit(&dp->dp_config_rwlock); | |
| 2943 spa_close(spa, FTAG); | |
| 2944 | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2945 return (error); |
| 3912 | 2946 } |
|
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 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2949 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()
maybee
parents:
6643
diff
changeset
|
2950 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
|
2951 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2952 int error = 0; |
|
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 ASSERT3S(asize, >, 0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2955 |
|
5831
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2956 /* |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2957 * *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
|
2958 * unconsumed refreservation space. |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2959 */ |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2960 *ref_rsrv = 0; |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2961 |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2962 mutex_enter(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2963 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2964 * Make a space adjustment for reserved bytes. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2965 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2966 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
|
2967 ASSERT3U(*used, >=, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2968 ds->ds_reserved - ds->ds_phys->ds_unique_bytes); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2969 *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
|
2970 *ref_rsrv = |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
2971 asize - MIN(asize, parent_delta(ds, asize + inflight)); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2972 } |
|
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 if (!check_quota || ds->ds_quota == 0) { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2975 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2976 return (0); |
|
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 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2979 * 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
|
2980 * 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
|
2981 * 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
|
2982 * may free up space for us). |
|
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 (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
|
2985 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
|
2986 error = ERESTART; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2987 else |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2988 error = EDQUOT; |
|
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 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2991 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2992 return (error); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2993 } |
|
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 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2996 static int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2997 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
|
2998 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
2999 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3000 uint64_t *quotap = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3001 uint64_t new_quota = *quotap; |
|
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 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
|
3004 return (ENOTSUP); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3005 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3006 if (new_quota == 0) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3007 return (0); |
|
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 if (new_quota < ds->ds_phys->ds_used_bytes || |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3010 new_quota < ds->ds_reserved) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3011 return (ENOSPC); |
|
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 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3014 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3015 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3016 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3017 void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3018 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
|
3019 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3020 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3021 uint64_t *quotap = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3022 uint64_t new_quota = *quotap; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3023 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3024 dmu_buf_will_dirty(ds->ds_dbuf, tx); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3025 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3026 ds->ds_quota = new_quota; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3027 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3028 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
|
3029 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3030 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
|
3031 tx, cr, "%lld dataset = %llu ", |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3032 (longlong_t)new_quota, ds->ds_object); |
|
5378
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 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3036 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
|
3037 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3038 dsl_dataset_t *ds; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3039 int err; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3040 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3041 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3042 if (err) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3043 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3044 |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3045 if (quota != ds->ds_quota) { |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3046 /* |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3047 * 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
|
3048 * want to make sure the file freeing takes effect. |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3049 */ |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3050 txg_wait_open(ds->ds_dir->dd_pool, 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3051 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3052 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3053 dsl_dataset_set_quota_check, dsl_dataset_set_quota_sync, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3054 ds, "a, 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3055 } |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3056 dsl_dataset_rele(ds, FTAG); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3057 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3058 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3059 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3060 static int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3061 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
|
3062 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3063 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3064 uint64_t *reservationp = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3065 uint64_t new_reservation = *reservationp; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3066 uint64_t unique; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3067 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3068 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
|
3069 SPA_VERSION_REFRESERVATION) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3070 return (ENOTSUP); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3071 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3072 if (dsl_dataset_is_snapshot(ds)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3073 return (EINVAL); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3074 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3075 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3076 * 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
|
3077 * space estimates may be inaccurate. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3078 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3079 if (!dmu_tx_is_syncing(tx)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3080 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3081 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3082 mutex_enter(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3083 unique = dsl_dataset_unique(ds); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3084 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3085 |
|
8525
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3086 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
|
3087 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
|
3088 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
|
3089 |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3090 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
|
3091 return (ENOSPC); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3092 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
|
3093 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
|
3094 return (ENOSPC); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3095 } |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3096 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3097 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3098 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3099 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3100 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3101 static void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3102 dsl_dataset_set_reservation_sync(void *arg1, void *arg2, cred_t *cr, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3103 dmu_tx_t *tx) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3104 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3105 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3106 uint64_t *reservationp = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3107 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
|
3108 uint64_t unique; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3109 int64_t delta; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3110 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3111 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
|
3112 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3113 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
|
3114 mutex_enter(&ds->ds_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3115 unique = dsl_dataset_unique(ds); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3116 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
|
3117 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
|
3118 ds->ds_reserved = new_reservation; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3119 mutex_exit(&ds->ds_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3120 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3121 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
|
3122 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
|
3123 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
|
3124 new_reservation, cr, tx); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3125 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3126 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
|
3127 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
|
3128 (longlong_t)new_reservation, ds->ds_object); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3129 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3130 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3131 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3132 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
|
3133 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3134 dsl_dataset_t *ds; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3135 int err; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3136 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3137 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3138 if (err) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3139 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3140 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3141 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
|
3142 dsl_dataset_set_reservation_check, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3143 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
|
3144 dsl_dataset_rele(ds, FTAG); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3145 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3146 } |