Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/dnode.c @ 11958:575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
| author | George Wilson <George.Wilson@Sun.COM> |
|---|---|
| date | Fri, 19 Mar 2010 13:34:41 -0700 |
| parents | 538c866aaac6 |
| children | 93ec1371f750 |
| rev | line source |
|---|---|
| 789 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
|
1491
bdcb30e07e7d
6389368 fat zap should use 16k blocks (with backwards compatability)
ahrens
parents:
1402
diff
changeset
|
5 * Common Development and Distribution License (the "License"). |
|
bdcb30e07e7d
6389368 fat zap should use 16k blocks (with backwards compatability)
ahrens
parents:
1402
diff
changeset
|
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 /* | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. |
| 789 | 23 * Use is subject to license terms. |
| 24 */ | |
| 25 | |
| 26 #include <sys/zfs_context.h> | |
| 27 #include <sys/dbuf.h> | |
| 28 #include <sys/dnode.h> | |
| 29 #include <sys/dmu.h> | |
| 30 #include <sys/dmu_impl.h> | |
| 31 #include <sys/dmu_tx.h> | |
| 32 #include <sys/dmu_objset.h> | |
| 33 #include <sys/dsl_dir.h> | |
| 34 #include <sys/dsl_dataset.h> | |
| 35 #include <sys/spa.h> | |
| 36 #include <sys/zio.h> | |
| 37 #include <sys/dmu_zfetch.h> | |
| 38 | |
| 39 static int free_range_compar(const void *node1, const void *node2); | |
| 40 | |
| 41 static kmem_cache_t *dnode_cache; | |
| 42 | |
| 43 static dnode_phys_t dnode_phys_zero; | |
| 44 | |
| 45 int zfs_default_bs = SPA_MINBLOCKSHIFT; | |
| 46 int zfs_default_ibs = DN_MAX_INDBLKSHIFT; | |
| 47 | |
| 48 /* ARGSUSED */ | |
| 49 static int | |
| 50 dnode_cons(void *arg, void *unused, int kmflag) | |
| 51 { | |
| 52 int i; | |
| 53 dnode_t *dn = arg; | |
| 54 bzero(dn, sizeof (dnode_t)); | |
| 55 | |
| 56 rw_init(&dn->dn_struct_rwlock, NULL, RW_DEFAULT, NULL); | |
| 57 mutex_init(&dn->dn_mtx, NULL, MUTEX_DEFAULT, NULL); | |
| 58 mutex_init(&dn->dn_dbufs_mtx, NULL, MUTEX_DEFAULT, NULL); | |
|
8214
d7abf7c1f1c1
6747934 Some locking variables are not properly initialized or destroyed
Ricardo M. Correia <Ricardo.M.Correia@Sun.COM>
parents:
7754
diff
changeset
|
59 cv_init(&dn->dn_notxholds, NULL, CV_DEFAULT, NULL); |
|
d7abf7c1f1c1
6747934 Some locking variables are not properly initialized or destroyed
Ricardo M. Correia <Ricardo.M.Correia@Sun.COM>
parents:
7754
diff
changeset
|
60 |
| 789 | 61 refcount_create(&dn->dn_holds); |
| 62 refcount_create(&dn->dn_tx_holds); | |
| 63 | |
| 64 for (i = 0; i < TXG_SIZE; i++) { | |
| 65 avl_create(&dn->dn_ranges[i], free_range_compar, | |
| 66 sizeof (free_range_t), | |
| 67 offsetof(struct free_range, fr_node)); | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
68 list_create(&dn->dn_dirty_records[i], |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
69 sizeof (dbuf_dirty_record_t), |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
70 offsetof(dbuf_dirty_record_t, dr_dirty_node)); |
| 789 | 71 } |
| 72 | |
| 73 list_create(&dn->dn_dbufs, sizeof (dmu_buf_impl_t), | |
| 74 offsetof(dmu_buf_impl_t, db_link)); | |
| 75 | |
| 76 return (0); | |
| 77 } | |
| 78 | |
| 79 /* ARGSUSED */ | |
| 80 static void | |
| 81 dnode_dest(void *arg, void *unused) | |
| 82 { | |
| 83 int i; | |
| 84 dnode_t *dn = arg; | |
| 85 | |
| 86 rw_destroy(&dn->dn_struct_rwlock); | |
| 87 mutex_destroy(&dn->dn_mtx); | |
| 88 mutex_destroy(&dn->dn_dbufs_mtx); | |
|
8214
d7abf7c1f1c1
6747934 Some locking variables are not properly initialized or destroyed
Ricardo M. Correia <Ricardo.M.Correia@Sun.COM>
parents:
7754
diff
changeset
|
89 cv_destroy(&dn->dn_notxholds); |
| 789 | 90 refcount_destroy(&dn->dn_holds); |
| 91 refcount_destroy(&dn->dn_tx_holds); | |
| 92 | |
| 93 for (i = 0; i < TXG_SIZE; i++) { | |
| 94 avl_destroy(&dn->dn_ranges[i]); | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
95 list_destroy(&dn->dn_dirty_records[i]); |
| 789 | 96 } |
| 97 | |
| 98 list_destroy(&dn->dn_dbufs); | |
| 99 } | |
| 100 | |
| 101 void | |
| 102 dnode_init(void) | |
| 103 { | |
| 104 dnode_cache = kmem_cache_create("dnode_t", | |
| 105 sizeof (dnode_t), | |
| 106 0, dnode_cons, dnode_dest, NULL, NULL, NULL, 0); | |
| 107 } | |
| 108 | |
| 109 void | |
| 110 dnode_fini(void) | |
| 111 { | |
| 112 kmem_cache_destroy(dnode_cache); | |
| 113 } | |
| 114 | |
| 115 | |
|
873
adefbfa5f42d
6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions
ek110237
parents:
789
diff
changeset
|
116 #ifdef ZFS_DEBUG |
| 789 | 117 void |
| 118 dnode_verify(dnode_t *dn) | |
| 119 { | |
| 120 int drop_struct_lock = FALSE; | |
| 121 | |
| 122 ASSERT(dn->dn_phys); | |
| 123 ASSERT(dn->dn_objset); | |
| 124 | |
| 125 ASSERT(dn->dn_phys->dn_type < DMU_OT_NUMTYPES); | |
| 126 | |
| 127 if (!(zfs_flags & ZFS_DEBUG_DNODE_VERIFY)) | |
| 128 return; | |
| 129 | |
| 130 if (!RW_WRITE_HELD(&dn->dn_struct_rwlock)) { | |
| 131 rw_enter(&dn->dn_struct_rwlock, RW_READER); | |
| 132 drop_struct_lock = TRUE; | |
| 133 } | |
| 134 if (dn->dn_phys->dn_type != DMU_OT_NONE || dn->dn_allocated_txg != 0) { | |
| 135 int i; | |
| 136 ASSERT3U(dn->dn_indblkshift, >=, 0); | |
| 137 ASSERT3U(dn->dn_indblkshift, <=, SPA_MAXBLOCKSHIFT); | |
| 138 if (dn->dn_datablkshift) { | |
| 139 ASSERT3U(dn->dn_datablkshift, >=, SPA_MINBLOCKSHIFT); | |
| 140 ASSERT3U(dn->dn_datablkshift, <=, SPA_MAXBLOCKSHIFT); | |
| 141 ASSERT3U(1<<dn->dn_datablkshift, ==, dn->dn_datablksz); | |
| 142 } | |
| 143 ASSERT3U(dn->dn_nlevels, <=, 30); | |
| 144 ASSERT3U(dn->dn_type, <=, DMU_OT_NUMTYPES); | |
| 145 ASSERT3U(dn->dn_nblkptr, >=, 1); | |
| 146 ASSERT3U(dn->dn_nblkptr, <=, DN_MAX_NBLKPTR); | |
| 147 ASSERT3U(dn->dn_bonuslen, <=, DN_MAX_BONUSLEN); | |
| 148 ASSERT3U(dn->dn_datablksz, ==, | |
| 149 dn->dn_datablkszsec << SPA_MINBLOCKSHIFT); | |
| 150 ASSERT3U(ISP2(dn->dn_datablksz), ==, dn->dn_datablkshift != 0); | |
| 151 ASSERT3U((dn->dn_nblkptr - 1) * sizeof (blkptr_t) + | |
| 152 dn->dn_bonuslen, <=, DN_MAX_BONUSLEN); | |
| 153 for (i = 0; i < TXG_SIZE; i++) { | |
| 154 ASSERT3U(dn->dn_next_nlevels[i], <=, dn->dn_nlevels); | |
| 155 } | |
| 156 } | |
| 157 if (dn->dn_phys->dn_type != DMU_OT_NONE) | |
| 158 ASSERT3U(dn->dn_phys->dn_nlevels, <=, dn->dn_nlevels); | |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
159 ASSERT(DMU_OBJECT_IS_SPECIAL(dn->dn_object) || dn->dn_dbuf != NULL); |
| 789 | 160 if (dn->dn_dbuf != NULL) { |
| 161 ASSERT3P(dn->dn_phys, ==, | |
| 162 (dnode_phys_t *)dn->dn_dbuf->db.db_data + | |
| 163 (dn->dn_object % (dn->dn_dbuf->db.db_size >> DNODE_SHIFT))); | |
| 164 } | |
| 165 if (drop_struct_lock) | |
| 166 rw_exit(&dn->dn_struct_rwlock); | |
|
873
adefbfa5f42d
6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions
ek110237
parents:
789
diff
changeset
|
167 } |
| 789 | 168 #endif |
| 169 | |
| 170 void | |
| 171 dnode_byteswap(dnode_phys_t *dnp) | |
| 172 { | |
| 173 uint64_t *buf64 = (void*)&dnp->dn_blkptr; | |
| 174 int i; | |
| 175 | |
| 176 if (dnp->dn_type == DMU_OT_NONE) { | |
| 177 bzero(dnp, sizeof (dnode_phys_t)); | |
| 178 return; | |
| 179 } | |
| 180 | |
| 181 dnp->dn_datablkszsec = BSWAP_16(dnp->dn_datablkszsec); | |
| 182 dnp->dn_bonuslen = BSWAP_16(dnp->dn_bonuslen); | |
| 183 dnp->dn_maxblkid = BSWAP_64(dnp->dn_maxblkid); | |
| 2082 | 184 dnp->dn_used = BSWAP_64(dnp->dn_used); |
| 789 | 185 |
| 186 /* | |
| 187 * dn_nblkptr is only one byte, so it's OK to read it in either | |
| 188 * byte order. We can't read dn_bouslen. | |
| 189 */ | |
| 190 ASSERT(dnp->dn_indblkshift <= SPA_MAXBLOCKSHIFT); | |
| 191 ASSERT(dnp->dn_nblkptr <= DN_MAX_NBLKPTR); | |
| 192 for (i = 0; i < dnp->dn_nblkptr * sizeof (blkptr_t)/8; i++) | |
| 193 buf64[i] = BSWAP_64(buf64[i]); | |
| 194 | |
| 195 /* | |
| 196 * OK to check dn_bonuslen for zero, because it won't matter if | |
| 197 * we have the wrong byte order. This is necessary because the | |
| 198 * dnode dnode is smaller than a regular dnode. | |
| 199 */ | |
| 200 if (dnp->dn_bonuslen != 0) { | |
| 201 /* | |
| 202 * Note that the bonus length calculated here may be | |
| 203 * longer than the actual bonus buffer. This is because | |
| 204 * we always put the bonus buffer after the last block | |
| 205 * pointer (instead of packing it against the end of the | |
| 206 * dnode buffer). | |
| 207 */ | |
| 208 int off = (dnp->dn_nblkptr-1) * sizeof (blkptr_t); | |
| 209 size_t len = DN_MAX_BONUSLEN - off; | |
| 3882 | 210 ASSERT3U(dnp->dn_bonustype, <, DMU_OT_NUMTYPES); |
| 789 | 211 dmu_ot[dnp->dn_bonustype].ot_byteswap(dnp->dn_bonus + off, len); |
| 212 } | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
213 |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
214 /* Swap SPILL block if we have one */ |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
215 if (dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
216 byteswap_uint64_array(&dnp->dn_spill, sizeof (blkptr_t)); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
217 |
| 789 | 218 } |
| 219 | |
| 220 void | |
| 221 dnode_buf_byteswap(void *vbuf, size_t size) | |
| 222 { | |
| 223 dnode_phys_t *buf = vbuf; | |
| 224 int i; | |
| 225 | |
| 226 ASSERT3U(sizeof (dnode_phys_t), ==, (1<<DNODE_SHIFT)); | |
| 227 ASSERT((size & (sizeof (dnode_phys_t)-1)) == 0); | |
| 228 | |
| 229 size >>= DNODE_SHIFT; | |
| 230 for (i = 0; i < size; i++) { | |
| 231 dnode_byteswap(buf); | |
| 232 buf++; | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 static int | |
| 237 free_range_compar(const void *node1, const void *node2) | |
| 238 { | |
| 239 const free_range_t *rp1 = node1; | |
| 240 const free_range_t *rp2 = node2; | |
| 241 | |
| 242 if (rp1->fr_blkid < rp2->fr_blkid) | |
| 243 return (-1); | |
| 244 else if (rp1->fr_blkid > rp2->fr_blkid) | |
| 245 return (1); | |
| 246 else return (0); | |
| 247 } | |
| 248 | |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
249 void |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
250 dnode_setbonuslen(dnode_t *dn, int newsize, dmu_tx_t *tx) |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
251 { |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
252 ASSERT3U(refcount_count(&dn->dn_holds), >=, 1); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
253 |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
254 dnode_setdirty(dn, tx); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
255 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
256 ASSERT3U(newsize, <=, DN_MAX_BONUSLEN - |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
257 (dn->dn_nblkptr-1) * sizeof (blkptr_t)); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
258 dn->dn_bonuslen = newsize; |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
259 if (newsize == 0) |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
260 dn->dn_next_bonuslen[tx->tx_txg & TXG_MASK] = DN_ZERO_BONUSLEN; |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
261 else |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
262 dn->dn_next_bonuslen[tx->tx_txg & TXG_MASK] = dn->dn_bonuslen; |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
263 rw_exit(&dn->dn_struct_rwlock); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
264 } |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
265 |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
266 void |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
267 dnode_setbonus_type(dnode_t *dn, dmu_object_type_t newtype, dmu_tx_t *tx) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
268 { |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
269 ASSERT3U(refcount_count(&dn->dn_holds), >=, 1); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
270 dnode_setdirty(dn, tx); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
271 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
272 dn->dn_bonustype = newtype; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
273 dn->dn_next_bonustype[tx->tx_txg & TXG_MASK] = dn->dn_bonustype; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
274 rw_exit(&dn->dn_struct_rwlock); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
275 } |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
276 |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
277 void |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
278 dnode_rm_spill(dnode_t *dn, dmu_tx_t *tx) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
279 { |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
280 ASSERT3U(refcount_count(&dn->dn_holds), >=, 1); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
281 dnode_setdirty(dn, tx); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
282 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
283 dn->dn_rm_spillblk[tx->tx_txg&TXG_MASK] = DN_KILL_SPILLBLK; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
284 dn->dn_have_spill = B_FALSE; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
285 rw_exit(&dn->dn_struct_rwlock); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
286 } |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
287 |
| 789 | 288 static void |
| 289 dnode_setdblksz(dnode_t *dn, int size) | |
| 290 { | |
| 291 ASSERT3U(P2PHASE(size, SPA_MINBLOCKSIZE), ==, 0); | |
| 292 ASSERT3U(size, <=, SPA_MAXBLOCKSIZE); | |
| 293 ASSERT3U(size, >=, SPA_MINBLOCKSIZE); | |
| 294 ASSERT3U(size >> SPA_MINBLOCKSHIFT, <, | |
| 295 1<<(sizeof (dn->dn_phys->dn_datablkszsec) * 8)); | |
| 296 dn->dn_datablksz = size; | |
| 297 dn->dn_datablkszsec = size >> SPA_MINBLOCKSHIFT; | |
| 298 dn->dn_datablkshift = ISP2(size) ? highbit(size - 1) : 0; | |
| 299 } | |
| 300 | |
| 301 static dnode_t * | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
302 dnode_create(objset_t *os, dnode_phys_t *dnp, dmu_buf_impl_t *db, |
| 789 | 303 uint64_t object) |
| 304 { | |
| 305 dnode_t *dn = kmem_cache_alloc(dnode_cache, KM_SLEEP); | |
| 306 (void) dnode_cons(dn, NULL, 0); /* XXX */ | |
| 307 | |
| 308 dn->dn_objset = os; | |
| 309 dn->dn_object = object; | |
| 310 dn->dn_dbuf = db; | |
| 311 dn->dn_phys = dnp; | |
| 312 | |
| 313 if (dnp->dn_datablkszsec) | |
| 314 dnode_setdblksz(dn, dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); | |
| 315 dn->dn_indblkshift = dnp->dn_indblkshift; | |
| 316 dn->dn_nlevels = dnp->dn_nlevels; | |
| 317 dn->dn_type = dnp->dn_type; | |
| 318 dn->dn_nblkptr = dnp->dn_nblkptr; | |
| 319 dn->dn_checksum = dnp->dn_checksum; | |
| 320 dn->dn_compress = dnp->dn_compress; | |
| 321 dn->dn_bonustype = dnp->dn_bonustype; | |
| 322 dn->dn_bonuslen = dnp->dn_bonuslen; | |
| 323 dn->dn_maxblkid = dnp->dn_maxblkid; | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
324 dn->dn_have_spill = ((dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) != 0); |
| 789 | 325 |
| 326 dmu_zfetch_init(&dn->dn_zfetch, dn); | |
| 327 | |
| 328 ASSERT(dn->dn_phys->dn_type < DMU_OT_NUMTYPES); | |
| 329 mutex_enter(&os->os_lock); | |
| 330 list_insert_head(&os->os_dnodes, dn); | |
| 331 mutex_exit(&os->os_lock); | |
| 332 | |
|
8582
df9361868dbe
6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents:
8214
diff
changeset
|
333 arc_space_consume(sizeof (dnode_t), ARC_SPACE_OTHER); |
| 789 | 334 return (dn); |
| 335 } | |
| 336 | |
| 337 static void | |
| 338 dnode_destroy(dnode_t *dn) | |
| 339 { | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
340 objset_t *os = dn->dn_objset; |
| 789 | 341 |
| 2885 | 342 #ifdef ZFS_DEBUG |
| 343 int i; | |
| 344 | |
| 345 for (i = 0; i < TXG_SIZE; i++) { | |
| 346 ASSERT(!list_link_active(&dn->dn_dirty_link[i])); | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
347 ASSERT(NULL == list_head(&dn->dn_dirty_records[i])); |
| 2885 | 348 ASSERT(0 == avl_numnodes(&dn->dn_ranges[i])); |
| 349 } | |
| 350 ASSERT(NULL == list_head(&dn->dn_dbufs)); | |
| 351 #endif | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
352 ASSERT((dn->dn_id_flags & DN_ID_NEW_EXIST) == 0); |
| 2885 | 353 |
| 789 | 354 mutex_enter(&os->os_lock); |
| 355 list_remove(&os->os_dnodes, dn); | |
| 356 mutex_exit(&os->os_lock); | |
| 357 | |
| 358 if (dn->dn_dirtyctx_firstset) { | |
| 359 kmem_free(dn->dn_dirtyctx_firstset, 1); | |
| 360 dn->dn_dirtyctx_firstset = NULL; | |
| 361 } | |
| 362 dmu_zfetch_rele(&dn->dn_zfetch); | |
| 1544 | 363 if (dn->dn_bonus) { |
| 364 mutex_enter(&dn->dn_bonus->db_mtx); | |
| 365 dbuf_evict(dn->dn_bonus); | |
| 366 dn->dn_bonus = NULL; | |
| 367 } | |
| 789 | 368 kmem_cache_free(dnode_cache, dn); |
|
8582
df9361868dbe
6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents:
8214
diff
changeset
|
369 arc_space_return(sizeof (dnode_t), ARC_SPACE_OTHER); |
| 789 | 370 } |
| 371 | |
| 372 void | |
| 373 dnode_allocate(dnode_t *dn, dmu_object_type_t ot, int blocksize, int ibs, | |
| 1599 | 374 dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx) |
| 789 | 375 { |
| 376 int i; | |
| 377 | |
| 378 if (blocksize == 0) | |
| 379 blocksize = 1 << zfs_default_bs; | |
| 1402 | 380 else if (blocksize > SPA_MAXBLOCKSIZE) |
| 381 blocksize = SPA_MAXBLOCKSIZE; | |
| 382 else | |
| 383 blocksize = P2ROUNDUP(blocksize, SPA_MINBLOCKSIZE); | |
| 789 | 384 |
| 385 if (ibs == 0) | |
| 386 ibs = zfs_default_ibs; | |
| 387 | |
| 388 ibs = MIN(MAX(ibs, DN_MIN_INDBLKSHIFT), DN_MAX_INDBLKSHIFT); | |
| 389 | |
| 390 dprintf("os=%p obj=%llu txg=%llu blocksize=%d ibs=%d\n", dn->dn_objset, | |
| 391 dn->dn_object, tx->tx_txg, blocksize, ibs); | |
| 392 | |
| 393 ASSERT(dn->dn_type == DMU_OT_NONE); | |
| 394 ASSERT(bcmp(dn->dn_phys, &dnode_phys_zero, sizeof (dnode_phys_t)) == 0); | |
| 395 ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE); | |
| 396 ASSERT(ot != DMU_OT_NONE); | |
| 397 ASSERT3U(ot, <, DMU_OT_NUMTYPES); | |
| 398 ASSERT((bonustype == DMU_OT_NONE && bonuslen == 0) || | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
399 (bonustype == DMU_OT_SA && bonuslen == 0) || |
| 789 | 400 (bonustype != DMU_OT_NONE && bonuslen != 0)); |
| 401 ASSERT3U(bonustype, <, DMU_OT_NUMTYPES); | |
| 402 ASSERT3U(bonuslen, <=, DN_MAX_BONUSLEN); | |
| 403 ASSERT(dn->dn_type == DMU_OT_NONE); | |
| 404 ASSERT3U(dn->dn_maxblkid, ==, 0); | |
| 405 ASSERT3U(dn->dn_allocated_txg, ==, 0); | |
| 406 ASSERT3U(dn->dn_assigned_txg, ==, 0); | |
| 407 ASSERT(refcount_is_zero(&dn->dn_tx_holds)); | |
| 408 ASSERT3U(refcount_count(&dn->dn_holds), <=, 1); | |
| 409 ASSERT3P(list_head(&dn->dn_dbufs), ==, NULL); | |
| 410 | |
| 411 for (i = 0; i < TXG_SIZE; i++) { | |
| 412 ASSERT3U(dn->dn_next_nlevels[i], ==, 0); | |
| 413 ASSERT3U(dn->dn_next_indblkshift[i], ==, 0); | |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
414 ASSERT3U(dn->dn_next_bonuslen[i], ==, 0); |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
415 ASSERT3U(dn->dn_next_bonustype[i], ==, 0); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
416 ASSERT3U(dn->dn_rm_spillblk[i], ==, 0); |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
417 ASSERT3U(dn->dn_next_blksz[i], ==, 0); |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
418 ASSERT(!list_link_active(&dn->dn_dirty_link[i])); |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
419 ASSERT3P(list_head(&dn->dn_dirty_records[i]), ==, NULL); |
| 789 | 420 ASSERT3U(avl_numnodes(&dn->dn_ranges[i]), ==, 0); |
| 421 } | |
| 422 | |
| 423 dn->dn_type = ot; | |
| 424 dnode_setdblksz(dn, blocksize); | |
| 425 dn->dn_indblkshift = ibs; | |
| 426 dn->dn_nlevels = 1; | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
427 if (bonustype == DMU_OT_SA) /* Maximize bonus space for SA */ |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
428 dn->dn_nblkptr = 1; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
429 else |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
430 dn->dn_nblkptr = 1 + |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
431 ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT); |
| 789 | 432 dn->dn_bonustype = bonustype; |
| 433 dn->dn_bonuslen = bonuslen; | |
| 434 dn->dn_checksum = ZIO_CHECKSUM_INHERIT; | |
| 435 dn->dn_compress = ZIO_COMPRESS_INHERIT; | |
| 436 dn->dn_dirtyctx = 0; | |
| 437 | |
| 438 dn->dn_free_txg = 0; | |
| 439 if (dn->dn_dirtyctx_firstset) { | |
| 440 kmem_free(dn->dn_dirtyctx_firstset, 1); | |
| 441 dn->dn_dirtyctx_firstset = NULL; | |
| 442 } | |
| 443 | |
| 444 dn->dn_allocated_txg = tx->tx_txg; | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
445 dn->dn_id_flags = 0; |
| 1599 | 446 |
| 789 | 447 dnode_setdirty(dn, tx); |
| 1599 | 448 dn->dn_next_indblkshift[tx->tx_txg & TXG_MASK] = ibs; |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
449 dn->dn_next_bonuslen[tx->tx_txg & TXG_MASK] = dn->dn_bonuslen; |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
450 dn->dn_next_bonustype[tx->tx_txg & TXG_MASK] = dn->dn_bonustype; |
| 1599 | 451 dn->dn_next_blksz[tx->tx_txg & TXG_MASK] = dn->dn_datablksz; |
| 789 | 452 } |
| 453 | |
| 454 void | |
| 455 dnode_reallocate(dnode_t *dn, dmu_object_type_t ot, int blocksize, | |
| 456 dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx) | |
| 457 { | |
|
8986
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
458 int nblkptr; |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
459 |
| 789 | 460 ASSERT3U(blocksize, >=, SPA_MINBLOCKSIZE); |
| 461 ASSERT3U(blocksize, <=, SPA_MAXBLOCKSIZE); | |
| 462 ASSERT3U(blocksize % SPA_MINBLOCKSIZE, ==, 0); | |
| 1544 | 463 ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT || dmu_tx_private_ok(tx)); |
| 789 | 464 ASSERT(tx->tx_txg != 0); |
| 465 ASSERT((bonustype == DMU_OT_NONE && bonuslen == 0) || | |
| 466 (bonustype != DMU_OT_NONE && bonuslen != 0)); | |
| 467 ASSERT3U(bonustype, <, DMU_OT_NUMTYPES); | |
| 468 ASSERT3U(bonuslen, <=, DN_MAX_BONUSLEN); | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
469 |
| 1544 | 470 /* clean up any unreferenced dbufs */ |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
471 dnode_evict_dbufs(dn); |
| 1544 | 472 |
|
8986
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
473 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
474 dnode_setdirty(dn, tx); |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
475 if (dn->dn_datablksz != blocksize) { |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
476 /* change blocksize */ |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
477 ASSERT(dn->dn_maxblkid == 0 && |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
478 (BP_IS_HOLE(&dn->dn_phys->dn_blkptr[0]) || |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
479 dnode_block_freed(dn, 0))); |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
480 dnode_setdblksz(dn, blocksize); |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
481 dn->dn_next_blksz[tx->tx_txg&TXG_MASK] = blocksize; |
| 789 | 482 } |
|
8986
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
483 if (dn->dn_bonuslen != bonuslen) |
|
45c289aff7c9
6801979 zfs recv can fail with E2BIG
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8644
diff
changeset
|
484 dn->dn_next_bonuslen[tx->tx_txg&TXG_MASK] = bonuslen; |
|
8644
10534c530688
6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8582
diff
changeset
|
485 nblkptr = 1 + ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT); |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
486 if (dn->dn_bonustype != bonustype) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
487 dn->dn_next_bonustype[tx->tx_txg&TXG_MASK] = bonustype; |
|
8644
10534c530688
6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8582
diff
changeset
|
488 if (dn->dn_nblkptr != nblkptr) |
|
10534c530688
6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8582
diff
changeset
|
489 dn->dn_next_nblkptr[tx->tx_txg&TXG_MASK] = nblkptr; |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
490 if (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) { |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
491 dn->dn_rm_spillblk[tx->tx_txg&TXG_MASK] = DN_KILL_SPILLBLK; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
492 dn->dn_have_spill = B_FALSE; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
493 } |
| 789 | 494 rw_exit(&dn->dn_struct_rwlock); |
| 495 | |
| 496 /* change type */ | |
| 497 dn->dn_type = ot; | |
| 498 | |
| 499 /* change bonus size and type */ | |
| 500 mutex_enter(&dn->dn_mtx); | |
| 501 dn->dn_bonustype = bonustype; | |
| 502 dn->dn_bonuslen = bonuslen; | |
|
8644
10534c530688
6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8582
diff
changeset
|
503 dn->dn_nblkptr = nblkptr; |
| 789 | 504 dn->dn_checksum = ZIO_CHECKSUM_INHERIT; |
| 505 dn->dn_compress = ZIO_COMPRESS_INHERIT; | |
| 506 ASSERT3U(dn->dn_nblkptr, <=, DN_MAX_NBLKPTR); | |
| 507 | |
|
8644
10534c530688
6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8582
diff
changeset
|
508 /* fix up the bonus db_size */ |
|
10534c530688
6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
8582
diff
changeset
|
509 if (dn->dn_bonus) { |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
510 dn->dn_bonus->db.db_size = |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
511 DN_MAX_BONUSLEN - (dn->dn_nblkptr-1) * sizeof (blkptr_t); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
512 ASSERT(dn->dn_bonuslen <= dn->dn_bonus->db.db_size); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
513 } |
| 3087 | 514 |
| 789 | 515 dn->dn_allocated_txg = tx->tx_txg; |
| 516 mutex_exit(&dn->dn_mtx); | |
| 517 } | |
| 518 | |
| 519 void | |
| 520 dnode_special_close(dnode_t *dn) | |
| 521 { | |
| 1544 | 522 /* |
| 523 * Wait for final references to the dnode to clear. This can | |
| 524 * only happen if the arc is asyncronously evicting state that | |
| 525 * has a hold on this dnode while we are trying to evict this | |
| 526 * dnode. | |
| 527 */ | |
| 528 while (refcount_count(&dn->dn_holds) > 0) | |
| 529 delay(1); | |
| 789 | 530 dnode_destroy(dn); |
| 531 } | |
| 532 | |
| 533 dnode_t * | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
534 dnode_special_open(objset_t *os, dnode_phys_t *dnp, uint64_t object) |
| 789 | 535 { |
| 536 dnode_t *dn = dnode_create(os, dnp, NULL, object); | |
|
873
adefbfa5f42d
6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions
ek110237
parents:
789
diff
changeset
|
537 DNODE_VERIFY(dn); |
| 789 | 538 return (dn); |
| 539 } | |
| 540 | |
| 541 static void | |
| 542 dnode_buf_pageout(dmu_buf_t *db, void *arg) | |
| 543 { | |
| 544 dnode_t **children_dnodes = arg; | |
| 545 int i; | |
| 546 int epb = db->db_size >> DNODE_SHIFT; | |
| 547 | |
| 548 for (i = 0; i < epb; i++) { | |
| 549 dnode_t *dn = children_dnodes[i]; | |
| 550 int n; | |
| 551 | |
| 552 if (dn == NULL) | |
| 553 continue; | |
| 554 #ifdef ZFS_DEBUG | |
| 555 /* | |
| 556 * If there are holds on this dnode, then there should | |
| 557 * be holds on the dnode's containing dbuf as well; thus | |
| 558 * it wouldn't be eligable for eviction and this function | |
| 559 * would not have been called. | |
| 560 */ | |
| 561 ASSERT(refcount_is_zero(&dn->dn_holds)); | |
| 562 ASSERT(list_head(&dn->dn_dbufs) == NULL); | |
| 563 ASSERT(refcount_is_zero(&dn->dn_tx_holds)); | |
| 564 | |
| 565 for (n = 0; n < TXG_SIZE; n++) | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
566 ASSERT(!list_link_active(&dn->dn_dirty_link[n])); |
| 789 | 567 #endif |
| 568 children_dnodes[i] = NULL; | |
| 569 dnode_destroy(dn); | |
| 570 } | |
| 571 kmem_free(children_dnodes, epb * sizeof (dnode_t *)); | |
| 572 } | |
| 573 | |
| 574 /* | |
| 1544 | 575 * errors: |
| 576 * EINVAL - invalid object number. | |
| 577 * EIO - i/o error. | |
| 578 * succeeds even for free dnodes. | |
| 789 | 579 */ |
| 1544 | 580 int |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
581 dnode_hold_impl(objset_t *os, uint64_t object, int flag, |
| 1544 | 582 void *tag, dnode_t **dnp) |
| 789 | 583 { |
| 1544 | 584 int epb, idx, err; |
| 789 | 585 int drop_struct_lock = FALSE; |
| 1544 | 586 int type; |
| 789 | 587 uint64_t blk; |
| 588 dnode_t *mdn, *dn; | |
| 589 dmu_buf_impl_t *db; | |
| 590 dnode_t **children_dnodes; | |
| 591 | |
|
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7385
diff
changeset
|
592 /* |
|
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7385
diff
changeset
|
593 * If you are holding the spa config lock as writer, you shouldn't |
|
11958
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
594 * be asking the DMU to do *anything* unless it's the root pool |
|
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
595 * which may require us to read from the root filesystem while |
|
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
596 * holding some (not all) of the locks as writer. |
|
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7385
diff
changeset
|
597 */ |
|
11958
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
598 ASSERT(spa_config_held(os->os_spa, SCL_ALL, RW_WRITER) == 0 || |
|
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
599 (spa_is_root(os->os_spa) && |
|
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
600 spa_config_held(os->os_spa, SCL_STATE, RW_WRITER) && |
|
575ffe1e978d
6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror
George Wilson <George.Wilson@Sun.COM>
parents:
11935
diff
changeset
|
601 !spa_config_held(os->os_spa, SCL_ZIO, RW_WRITER))); |
|
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7385
diff
changeset
|
602 |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
603 if (object == DMU_USERUSED_OBJECT || object == DMU_GROUPUSED_OBJECT) { |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
604 dn = (object == DMU_USERUSED_OBJECT) ? |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
605 os->os_userused_dnode : os->os_groupused_dnode; |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
606 if (dn == NULL) |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
607 return (ENOENT); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
608 type = dn->dn_type; |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
609 if ((flag & DNODE_MUST_BE_ALLOCATED) && type == DMU_OT_NONE) |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
610 return (ENOENT); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
611 if ((flag & DNODE_MUST_BE_FREE) && type != DMU_OT_NONE) |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
612 return (EEXIST); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
613 DNODE_VERIFY(dn); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
614 (void) refcount_add(&dn->dn_holds, tag); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
615 *dnp = dn; |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
616 return (0); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
617 } |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
618 |
| 789 | 619 if (object == 0 || object >= DN_MAX_OBJECT) |
| 1544 | 620 return (EINVAL); |
| 789 | 621 |
| 622 mdn = os->os_meta_dnode; | |
| 623 | |
|
873
adefbfa5f42d
6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions
ek110237
parents:
789
diff
changeset
|
624 DNODE_VERIFY(mdn); |
| 789 | 625 |
| 626 if (!RW_WRITE_HELD(&mdn->dn_struct_rwlock)) { | |
| 627 rw_enter(&mdn->dn_struct_rwlock, RW_READER); | |
| 628 drop_struct_lock = TRUE; | |
| 629 } | |
| 630 | |
| 631 blk = dbuf_whichblock(mdn, object * sizeof (dnode_phys_t)); | |
| 632 | |
| 1544 | 633 db = dbuf_hold(mdn, blk, FTAG); |
| 789 | 634 if (drop_struct_lock) |
| 635 rw_exit(&mdn->dn_struct_rwlock); | |
| 1544 | 636 if (db == NULL) |
| 637 return (EIO); | |
| 638 err = dbuf_read(db, NULL, DB_RF_CANFAIL); | |
| 639 if (err) { | |
| 640 dbuf_rele(db, FTAG); | |
| 641 return (err); | |
| 642 } | |
| 789 | 643 |
| 644 ASSERT3U(db->db.db_size, >=, 1<<DNODE_SHIFT); | |
| 645 epb = db->db.db_size >> DNODE_SHIFT; | |
| 646 | |
| 647 idx = object & (epb-1); | |
| 648 | |
| 649 children_dnodes = dmu_buf_get_user(&db->db); | |
| 650 if (children_dnodes == NULL) { | |
| 651 dnode_t **winner; | |
| 652 children_dnodes = kmem_zalloc(epb * sizeof (dnode_t *), | |
| 653 KM_SLEEP); | |
| 654 if (winner = dmu_buf_set_user(&db->db, children_dnodes, NULL, | |
| 655 dnode_buf_pageout)) { | |
| 656 kmem_free(children_dnodes, epb * sizeof (dnode_t *)); | |
| 657 children_dnodes = winner; | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 if ((dn = children_dnodes[idx]) == NULL) { | |
|
4309
3dfde0f4662d
6542676 ARC needs to track meta-data memory overhead
maybee
parents:
3882
diff
changeset
|
662 dnode_phys_t *dnp = (dnode_phys_t *)db->db.db_data+idx; |
| 789 | 663 dnode_t *winner; |
|
4309
3dfde0f4662d
6542676 ARC needs to track meta-data memory overhead
maybee
parents:
3882
diff
changeset
|
664 |
|
3dfde0f4662d
6542676 ARC needs to track meta-data memory overhead
maybee
parents:
3882
diff
changeset
|
665 dn = dnode_create(os, dnp, db, object); |
| 789 | 666 winner = atomic_cas_ptr(&children_dnodes[idx], NULL, dn); |
| 667 if (winner != NULL) { | |
| 668 dnode_destroy(dn); | |
| 669 dn = winner; | |
| 670 } | |
| 671 } | |
| 672 | |
| 673 mutex_enter(&dn->dn_mtx); | |
| 1544 | 674 type = dn->dn_type; |
| 789 | 675 if (dn->dn_free_txg || |
| 1544 | 676 ((flag & DNODE_MUST_BE_ALLOCATED) && type == DMU_OT_NONE) || |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
677 ((flag & DNODE_MUST_BE_FREE) && |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
678 (type != DMU_OT_NONE || (dn->dn_id_flags & DN_ID_SYNC)))) { |
| 789 | 679 mutex_exit(&dn->dn_mtx); |
| 1544 | 680 dbuf_rele(db, FTAG); |
| 681 return (type == DMU_OT_NONE ? ENOENT : EEXIST); | |
| 789 | 682 } |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
683 if (flag & DNODE_MUST_BE_FREE) { |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
684 ASSERT(refcount_is_zero(&dn->dn_holds)); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
685 ASSERT(!(dn->dn_id_flags & DN_ID_SYNC)); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
686 } |
| 789 | 687 mutex_exit(&dn->dn_mtx); |
| 688 | |
| 1544 | 689 if (refcount_add(&dn->dn_holds, tag) == 1) |
| 789 | 690 dbuf_add_ref(db, dn); |
| 691 | |
|
873
adefbfa5f42d
6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions
ek110237
parents:
789
diff
changeset
|
692 DNODE_VERIFY(dn); |
| 789 | 693 ASSERT3P(dn->dn_dbuf, ==, db); |
| 694 ASSERT3U(dn->dn_object, ==, object); | |
| 1544 | 695 dbuf_rele(db, FTAG); |
| 789 | 696 |
| 1544 | 697 *dnp = dn; |
| 698 return (0); | |
| 789 | 699 } |
| 700 | |
| 701 /* | |
| 702 * Return held dnode if the object is allocated, NULL if not. | |
| 703 */ | |
| 1544 | 704 int |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
705 dnode_hold(objset_t *os, uint64_t object, void *tag, dnode_t **dnp) |
| 789 | 706 { |
| 1544 | 707 return (dnode_hold_impl(os, object, DNODE_MUST_BE_ALLOCATED, tag, dnp)); |
| 789 | 708 } |
| 709 | |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
710 /* |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
711 * Can only add a reference if there is already at least one |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
712 * reference on the dnode. Returns FALSE if unable to add a |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
713 * new reference. |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
714 */ |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
715 boolean_t |
| 1544 | 716 dnode_add_ref(dnode_t *dn, void *tag) |
| 789 | 717 { |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
718 mutex_enter(&dn->dn_mtx); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
719 if (refcount_is_zero(&dn->dn_holds)) { |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
720 mutex_exit(&dn->dn_mtx); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
721 return (FALSE); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
722 } |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
723 VERIFY(1 < refcount_add(&dn->dn_holds, tag)); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
724 mutex_exit(&dn->dn_mtx); |
|
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
725 return (TRUE); |
| 789 | 726 } |
| 727 | |
| 728 void | |
| 1544 | 729 dnode_rele(dnode_t *dn, void *tag) |
| 789 | 730 { |
| 731 uint64_t refs; | |
| 732 | |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
733 mutex_enter(&dn->dn_mtx); |
| 1544 | 734 refs = refcount_remove(&dn->dn_holds, tag); |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
735 mutex_exit(&dn->dn_mtx); |
| 789 | 736 /* NOTE: the DNODE_DNODE does not have a dn_dbuf */ |
| 737 if (refs == 0 && dn->dn_dbuf) | |
| 1544 | 738 dbuf_rele(dn->dn_dbuf, dn); |
| 789 | 739 } |
| 740 | |
| 741 void | |
| 742 dnode_setdirty(dnode_t *dn, dmu_tx_t *tx) | |
| 743 { | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
744 objset_t *os = dn->dn_objset; |
| 789 | 745 uint64_t txg = tx->tx_txg; |
| 746 | |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
747 if (DMU_OBJECT_IS_SPECIAL(dn->dn_object)) { |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
748 dsl_dataset_dirty(os->os_dsl_dataset, tx); |
| 789 | 749 return; |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
750 } |
| 789 | 751 |
|
873
adefbfa5f42d
6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions
ek110237
parents:
789
diff
changeset
|
752 DNODE_VERIFY(dn); |
| 789 | 753 |
| 754 #ifdef ZFS_DEBUG | |
| 755 mutex_enter(&dn->dn_mtx); | |
| 756 ASSERT(dn->dn_phys->dn_type || dn->dn_allocated_txg); | |
| 757 /* ASSERT(dn->dn_free_txg == 0 || dn->dn_free_txg >= txg); */ | |
| 758 mutex_exit(&dn->dn_mtx); | |
| 759 #endif | |
| 760 | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
761 /* |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
762 * Determine old uid/gid when necessary |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
763 */ |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
764 dmu_objset_userquota_get_ids(dn, B_TRUE); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
765 |
| 789 | 766 mutex_enter(&os->os_lock); |
| 767 | |
| 768 /* | |
| 769 * If we are already marked dirty, we're done. | |
| 770 */ | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
771 if (list_link_active(&dn->dn_dirty_link[txg & TXG_MASK])) { |
| 789 | 772 mutex_exit(&os->os_lock); |
| 773 return; | |
| 774 } | |
| 775 | |
| 776 ASSERT(!refcount_is_zero(&dn->dn_holds) || list_head(&dn->dn_dbufs)); | |
| 777 ASSERT(dn->dn_datablksz != 0); | |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
778 ASSERT3U(dn->dn_next_bonuslen[txg&TXG_MASK], ==, 0); |
| 1599 | 779 ASSERT3U(dn->dn_next_blksz[txg&TXG_MASK], ==, 0); |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
780 ASSERT3U(dn->dn_next_bonustype[txg&TXG_MASK], ==, 0); |
| 789 | 781 |
| 782 dprintf_ds(os->os_dsl_dataset, "obj=%llu txg=%llu\n", | |
| 783 dn->dn_object, txg); | |
| 784 | |
| 785 if (dn->dn_free_txg > 0 && dn->dn_free_txg <= txg) { | |
| 786 list_insert_tail(&os->os_free_dnodes[txg&TXG_MASK], dn); | |
| 787 } else { | |
| 788 list_insert_tail(&os->os_dirty_dnodes[txg&TXG_MASK], dn); | |
| 789 } | |
| 790 | |
| 791 mutex_exit(&os->os_lock); | |
| 792 | |
| 793 /* | |
| 794 * The dnode maintains a hold on its containing dbuf as | |
| 795 * long as there are holds on it. Each instantiated child | |
| 796 * dbuf maintaines a hold on the dnode. When the last child | |
| 797 * drops its hold, the dnode will drop its hold on the | |
| 798 * containing dbuf. We add a "dirty hold" here so that the | |
| 799 * dnode will hang around after we finish processing its | |
| 800 * children. | |
| 801 */ | |
|
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4577
diff
changeset
|
802 VERIFY(dnode_add_ref(dn, (void *)(uintptr_t)tx->tx_txg)); |
| 789 | 803 |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
804 (void) dbuf_dirty(dn->dn_dbuf, tx); |
| 789 | 805 |
| 806 dsl_dataset_dirty(os->os_dsl_dataset, tx); | |
| 807 } | |
| 808 | |
| 809 void | |
| 810 dnode_free(dnode_t *dn, dmu_tx_t *tx) | |
| 811 { | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
812 int txgoff = tx->tx_txg & TXG_MASK; |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
813 |
| 789 | 814 dprintf("dn=%p txg=%llu\n", dn, tx->tx_txg); |
| 815 | |
| 816 /* we should be the only holder... hopefully */ | |
| 817 /* ASSERT3U(refcount_count(&dn->dn_holds), ==, 1); */ | |
| 818 | |
| 819 mutex_enter(&dn->dn_mtx); | |
| 820 if (dn->dn_type == DMU_OT_NONE || dn->dn_free_txg) { | |
| 821 mutex_exit(&dn->dn_mtx); | |
| 822 return; | |
| 823 } | |
| 824 dn->dn_free_txg = tx->tx_txg; | |
| 825 mutex_exit(&dn->dn_mtx); | |
| 826 | |
| 827 /* | |
| 828 * If the dnode is already dirty, it needs to be moved from | |
| 829 * the dirty list to the free list. | |
| 830 */ | |
| 831 mutex_enter(&dn->dn_objset->os_lock); | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
832 if (list_link_active(&dn->dn_dirty_link[txgoff])) { |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
833 list_remove(&dn->dn_objset->os_dirty_dnodes[txgoff], dn); |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
834 list_insert_tail(&dn->dn_objset->os_free_dnodes[txgoff], dn); |
| 789 | 835 mutex_exit(&dn->dn_objset->os_lock); |
| 836 } else { | |
| 837 mutex_exit(&dn->dn_objset->os_lock); | |
| 838 dnode_setdirty(dn, tx); | |
| 839 } | |
| 840 } | |
| 841 | |
| 842 /* | |
| 843 * Try to change the block size for the indicated dnode. This can only | |
| 844 * succeed if there are no blocks allocated or dirty beyond first block | |
| 845 */ | |
| 846 int | |
| 847 dnode_set_blksz(dnode_t *dn, uint64_t size, int ibs, dmu_tx_t *tx) | |
| 848 { | |
| 849 dmu_buf_impl_t *db, *db_next; | |
| 6992 | 850 int err; |
| 789 | 851 |
| 852 if (size == 0) | |
| 853 size = SPA_MINBLOCKSIZE; | |
| 854 if (size > SPA_MAXBLOCKSIZE) | |
| 855 size = SPA_MAXBLOCKSIZE; | |
| 856 else | |
| 857 size = P2ROUNDUP(size, SPA_MINBLOCKSIZE); | |
| 858 | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
859 if (ibs == dn->dn_indblkshift) |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
860 ibs = 0; |
| 789 | 861 |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
862 if (size >> SPA_MINBLOCKSHIFT == dn->dn_datablkszsec && ibs == 0) |
| 789 | 863 return (0); |
| 864 | |
| 865 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); | |
| 866 | |
| 867 /* Check for any allocated blocks beyond the first */ | |
| 868 if (dn->dn_phys->dn_maxblkid != 0) | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
869 goto fail; |
| 789 | 870 |
| 871 mutex_enter(&dn->dn_dbufs_mtx); | |
| 872 for (db = list_head(&dn->dn_dbufs); db; db = db_next) { | |
| 873 db_next = list_next(&dn->dn_dbufs, db); | |
| 874 | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
875 if (db->db_blkid != 0 && db->db_blkid != DMU_BONUS_BLKID && |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
876 db->db_blkid != DMU_SPILL_BLKID) { |
| 789 | 877 mutex_exit(&dn->dn_dbufs_mtx); |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
878 goto fail; |
| 789 | 879 } |
| 880 } | |
| 881 mutex_exit(&dn->dn_dbufs_mtx); | |
| 882 | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
883 if (ibs && dn->dn_nlevels != 1) |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
884 goto fail; |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
885 |
| 6992 | 886 /* resize the old block */ |
| 887 err = dbuf_hold_impl(dn, 0, 0, TRUE, FTAG, &db); | |
| 888 if (err == 0) | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
889 dbuf_new_size(db, size, tx); |
| 6992 | 890 else if (err != ENOENT) |
| 891 goto fail; | |
| 789 | 892 |
| 893 dnode_setdblksz(dn, size); | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
894 dnode_setdirty(dn, tx); |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
895 dn->dn_next_blksz[tx->tx_txg&TXG_MASK] = size; |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
896 if (ibs) { |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
897 dn->dn_indblkshift = ibs; |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
898 dn->dn_next_indblkshift[tx->tx_txg&TXG_MASK] = ibs; |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
899 } |
| 6992 | 900 /* rele after we have fixed the blocksize in the dnode */ |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
901 if (db) |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
902 dbuf_rele(db, FTAG); |
| 789 | 903 |
| 904 rw_exit(&dn->dn_struct_rwlock); | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
905 return (0); |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
906 |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
907 fail: |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
908 rw_exit(&dn->dn_struct_rwlock); |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
909 return (ENOTSUP); |
| 789 | 910 } |
| 911 | |
|
7332
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
912 /* read-holding callers must not rely on the lock being continuously held */ |
| 789 | 913 void |
|
7332
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
914 dnode_new_blkid(dnode_t *dn, uint64_t blkid, dmu_tx_t *tx, boolean_t have_read) |
| 789 | 915 { |
| 916 uint64_t txgoff = tx->tx_txg & TXG_MASK; | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
917 int epbs, new_nlevels; |
| 789 | 918 uint64_t sz; |
| 919 | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
920 ASSERT(blkid != DMU_BONUS_BLKID); |
| 789 | 921 |
|
7332
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
922 ASSERT(have_read ? |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
923 RW_READ_HELD(&dn->dn_struct_rwlock) : |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
924 RW_WRITE_HELD(&dn->dn_struct_rwlock)); |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
925 |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
926 /* |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
927 * if we have a read-lock, check to see if we need to do any work |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
928 * before upgrading to a write-lock. |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
929 */ |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
930 if (have_read) { |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
931 if (blkid <= dn->dn_maxblkid) |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
932 return; |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
933 |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
934 if (!rw_tryupgrade(&dn->dn_struct_rwlock)) { |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
935 rw_exit(&dn->dn_struct_rwlock); |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
936 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
937 } |
| 789 | 938 } |
| 939 | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
940 if (blkid <= dn->dn_maxblkid) |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
941 goto out; |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
942 |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
943 dn->dn_maxblkid = blkid; |
| 789 | 944 |
| 945 /* | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
946 * Compute the number of levels necessary to support the new maxblkid. |
| 789 | 947 */ |
| 948 new_nlevels = 1; | |
| 949 epbs = dn->dn_indblkshift - SPA_BLKPTRSHIFT; | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
950 for (sz = dn->dn_nblkptr; |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
951 sz <= blkid && sz >= dn->dn_nblkptr; sz <<= epbs) |
| 789 | 952 new_nlevels++; |
| 953 | |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
954 if (new_nlevels > dn->dn_nlevels) { |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
955 int old_nlevels = dn->dn_nlevels; |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
956 dmu_buf_impl_t *db; |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
957 list_t *list; |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
958 dbuf_dirty_record_t *new, *dr, *dr_next; |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
959 |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
960 dn->dn_nlevels = new_nlevels; |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
961 |
|
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
962 ASSERT3U(new_nlevels, >, dn->dn_next_nlevels[txgoff]); |
| 789 | 963 dn->dn_next_nlevels[txgoff] = new_nlevels; |
| 964 | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
965 /* dirty the left indirects */ |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
966 db = dbuf_hold_level(dn, old_nlevels, 0, FTAG); |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
967 new = dbuf_dirty(db, tx); |
| 1544 | 968 dbuf_rele(db, FTAG); |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
969 |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
970 /* transfer the dirty records to the new indirect */ |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
971 mutex_enter(&dn->dn_mtx); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
972 mutex_enter(&new->dt.di.dr_mtx); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
973 list = &dn->dn_dirty_records[txgoff]; |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
974 for (dr = list_head(list); dr; dr = dr_next) { |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
975 dr_next = list_next(&dn->dn_dirty_records[txgoff], dr); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
976 if (dr->dr_dbuf->db_level != new_nlevels-1 && |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
977 dr->dr_dbuf->db_blkid != DMU_BONUS_BLKID && |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
978 dr->dr_dbuf->db_blkid != DMU_SPILL_BLKID) { |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
979 ASSERT(dr->dr_dbuf->db_level == old_nlevels-1); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
980 list_remove(&dn->dn_dirty_records[txgoff], dr); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
981 list_insert_tail(&new->dt.di.dr_children, dr); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
982 dr->dr_parent = new; |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
983 } |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
984 } |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
985 mutex_exit(&new->dt.di.dr_mtx); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
986 mutex_exit(&dn->dn_mtx); |
| 789 | 987 } |
| 988 | |
| 989 out: | |
|
7332
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
990 if (have_read) |
|
396f25bd1f34
6579975 dnode_new_blkid should look before it locks
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7049
diff
changeset
|
991 rw_downgrade(&dn->dn_struct_rwlock); |
| 789 | 992 } |
| 993 | |
| 994 void | |
| 995 dnode_clear_range(dnode_t *dn, uint64_t blkid, uint64_t nblks, dmu_tx_t *tx) | |
| 996 { | |
| 997 avl_tree_t *tree = &dn->dn_ranges[tx->tx_txg&TXG_MASK]; | |
| 998 avl_index_t where; | |
| 999 free_range_t *rp; | |
| 1000 free_range_t rp_tofind; | |
| 1001 uint64_t endblk = blkid + nblks; | |
| 1002 | |
| 1003 ASSERT(MUTEX_HELD(&dn->dn_mtx)); | |
| 1004 ASSERT(nblks <= UINT64_MAX - blkid); /* no overflow */ | |
| 1005 | |
| 1006 dprintf_dnode(dn, "blkid=%llu nblks=%llu txg=%llu\n", | |
| 1007 blkid, nblks, tx->tx_txg); | |
| 1008 rp_tofind.fr_blkid = blkid; | |
| 1009 rp = avl_find(tree, &rp_tofind, &where); | |
| 1010 if (rp == NULL) | |
| 1011 rp = avl_nearest(tree, where, AVL_BEFORE); | |
| 1012 if (rp == NULL) | |
| 1013 rp = avl_nearest(tree, where, AVL_AFTER); | |
| 1014 | |
| 1015 while (rp && (rp->fr_blkid <= blkid + nblks)) { | |
| 1016 uint64_t fr_endblk = rp->fr_blkid + rp->fr_nblks; | |
| 1017 free_range_t *nrp = AVL_NEXT(tree, rp); | |
| 1018 | |
| 1019 if (blkid <= rp->fr_blkid && endblk >= fr_endblk) { | |
| 1020 /* clear this entire range */ | |
| 1021 avl_remove(tree, rp); | |
| 1022 kmem_free(rp, sizeof (free_range_t)); | |
| 1023 } else if (blkid <= rp->fr_blkid && | |
| 1024 endblk > rp->fr_blkid && endblk < fr_endblk) { | |
| 1025 /* clear the beginning of this range */ | |
| 1026 rp->fr_blkid = endblk; | |
| 1027 rp->fr_nblks = fr_endblk - endblk; | |
| 1028 } else if (blkid > rp->fr_blkid && blkid < fr_endblk && | |
| 1029 endblk >= fr_endblk) { | |
| 1030 /* clear the end of this range */ | |
| 1031 rp->fr_nblks = blkid - rp->fr_blkid; | |
| 1032 } else if (blkid > rp->fr_blkid && endblk < fr_endblk) { | |
| 1033 /* clear a chunk out of this range */ | |
| 1034 free_range_t *new_rp = | |
| 1035 kmem_alloc(sizeof (free_range_t), KM_SLEEP); | |
| 1036 | |
| 1037 new_rp->fr_blkid = endblk; | |
| 1038 new_rp->fr_nblks = fr_endblk - endblk; | |
| 1039 avl_insert_here(tree, new_rp, rp, AVL_AFTER); | |
| 1040 rp->fr_nblks = blkid - rp->fr_blkid; | |
| 1041 } | |
| 1042 /* there may be no overlap */ | |
| 1043 rp = nrp; | |
| 1044 } | |
| 1045 } | |
| 1046 | |
| 1047 void | |
| 1048 dnode_free_range(dnode_t *dn, uint64_t off, uint64_t len, dmu_tx_t *tx) | |
| 1049 { | |
| 1050 dmu_buf_impl_t *db; | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1051 uint64_t blkoff, blkid, nblks; |
| 6992 | 1052 int blksz, blkshift, head, tail; |
| 789 | 1053 int trunc = FALSE; |
| 6992 | 1054 int epbs; |
| 789 | 1055 |
| 1056 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); | |
| 1057 blksz = dn->dn_datablksz; | |
| 6992 | 1058 blkshift = dn->dn_datablkshift; |
| 1059 epbs = dn->dn_indblkshift - SPA_BLKPTRSHIFT; | |
| 789 | 1060 |
| 1061 if (len == -1ULL) { | |
| 1062 len = UINT64_MAX - off; | |
| 1063 trunc = TRUE; | |
| 1064 } | |
| 1065 | |
| 1066 /* | |
| 1067 * First, block align the region to free: | |
| 1068 */ | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1069 if (ISP2(blksz)) { |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1070 head = P2NPHASE(off, blksz); |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1071 blkoff = P2PHASE(off, blksz); |
| 6992 | 1072 if ((off >> blkshift) > dn->dn_maxblkid) |
| 1073 goto out; | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1074 } else { |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1075 ASSERT(dn->dn_maxblkid == 0); |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1076 if (off == 0 && len >= blksz) { |
| 6992 | 1077 /* Freeing the whole block; fast-track this request */ |
| 1078 blkid = 0; | |
| 1079 nblks = 1; | |
| 1080 goto done; | |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1081 } else if (off >= blksz) { |
| 6992 | 1082 /* Freeing past end-of-data */ |
| 1083 goto out; | |
| 789 | 1084 } else { |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1085 /* Freeing part of the block. */ |
| 789 | 1086 head = blksz - off; |
| 1087 ASSERT3U(head, >, 0); | |
| 1088 } | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1089 blkoff = off; |
| 789 | 1090 } |
| 1091 /* zero out any partial block data at the start of the range */ | |
| 1092 if (head) { | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1093 ASSERT3U(blkoff + head, ==, blksz); |
| 789 | 1094 if (len < head) |
| 1095 head = len; | |
| 1096 if (dbuf_hold_impl(dn, 0, dbuf_whichblock(dn, off), TRUE, | |
| 1097 FTAG, &db) == 0) { | |
| 1098 caddr_t data; | |
| 1099 | |
| 1100 /* don't dirty if it isn't on disk and isn't dirty */ | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3087
diff
changeset
|
1101 if (db->db_last_dirty || |
| 789 | 1102 (db->db_blkptr && !BP_IS_HOLE(db->db_blkptr))) { |
| 1103 rw_exit(&dn->dn_struct_rwlock); | |
| 1104 dbuf_will_dirty(db, tx); | |
| 1105 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); | |
| 1106 data = db->db.db_data; | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1107 bzero(data + blkoff, head); |
| 789 | 1108 } |
| 1544 | 1109 dbuf_rele(db, FTAG); |
| 789 | 1110 } |
| 1111 off += head; | |
| 1112 len -= head; | |
| 1113 } | |
| 1114 | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1115 /* If the range was less than one block, we're done */ |
| 6992 | 1116 if (len == 0) |
| 1117 goto out; | |
| 1118 | |
| 1119 /* If the remaining range is past end of file, we're done */ | |
| 1120 if ((off >> blkshift) > dn->dn_maxblkid) | |
| 1121 goto out; | |
| 1122 | |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1123 ASSERT(ISP2(blksz)); |
| 6992 | 1124 if (trunc) |
| 1125 tail = 0; | |
| 1126 else | |
| 1127 tail = P2PHASE(len, blksz); | |
| 1128 | |
| 1129 ASSERT3U(P2PHASE(off, blksz), ==, 0); | |
| 1130 /* zero out any partial block data at the end of the range */ | |
| 1131 if (tail) { | |
| 1132 if (len < tail) | |
| 1133 tail = len; | |
| 1134 if (dbuf_hold_impl(dn, 0, dbuf_whichblock(dn, off+len), | |
| 1135 TRUE, FTAG, &db) == 0) { | |
| 1136 /* don't dirty if not on disk and not dirty */ | |
| 1137 if (db->db_last_dirty || | |
| 1138 (db->db_blkptr && !BP_IS_HOLE(db->db_blkptr))) { | |
| 1139 rw_exit(&dn->dn_struct_rwlock); | |
| 1140 dbuf_will_dirty(db, tx); | |
| 1141 rw_enter(&dn->dn_struct_rwlock, RW_WRITER); | |
| 1142 bzero(db->db.db_data, tail); | |
| 1143 } | |
| 1144 dbuf_rele(db, FTAG); | |
| 1145 } | |
| 1146 len -= tail; | |
| 1147 } | |
| 1148 | |
| 1149 /* If the range did not include a full block, we are done */ | |
| 1150 if (len == 0) | |
| 789 | 1151 goto out; |
| 1152 | |
| 6992 | 1153 ASSERT(IS_P2ALIGNED(off, blksz)); |
| 1154 ASSERT(trunc || IS_P2ALIGNED(len, blksz)); | |
| 1155 blkid = off >> blkshift; | |
| 1156 nblks = len >> blkshift; | |
| 1157 if (trunc) | |
| 1158 nblks += 1; | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1159 |
| 6992 | 1160 /* |
| 1161 * Read in and mark all the level-1 indirects dirty, | |
| 1162 * so that they will stay in memory until syncing phase. | |
|
7049
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1163 * Always dirty the first and last indirect to make sure |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1164 * we dirty all the partial indirects. |
| 6992 | 1165 */ |
| 1166 if (dn->dn_nlevels > 1) { | |
| 1167 uint64_t i, first, last; | |
| 1168 int shift = epbs + dn->dn_datablkshift; | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1169 |
| 6992 | 1170 first = blkid >> epbs; |
|
7049
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1171 if (db = dbuf_hold_level(dn, 1, first, FTAG)) { |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1172 dbuf_will_dirty(db, tx); |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1173 dbuf_rele(db, FTAG); |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1174 } |
| 6992 | 1175 if (trunc) |
| 1176 last = dn->dn_maxblkid >> epbs; | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1177 else |
| 6992 | 1178 last = (blkid + nblks - 1) >> epbs; |
|
7049
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1179 if (last > first && (db = dbuf_hold_level(dn, 1, last, FTAG))) { |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1180 dbuf_will_dirty(db, tx); |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1181 dbuf_rele(db, FTAG); |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1182 } |
|
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1183 for (i = first + 1; i < last; i++) { |
| 6992 | 1184 uint64_t ibyte = i << shift; |
| 1185 int err; | |
| 789 | 1186 |
| 6992 | 1187 err = dnode_next_offset(dn, |
| 1188 DNODE_FIND_HAVELOCK, &ibyte, 1, 1, 0); | |
| 1189 i = ibyte >> shift; | |
|
7049
d0b1e2eb4ab5
6723124 Assertion failed: all || blocks_freed == 0 || db->db_last_dirty
maybee
parents:
6992
diff
changeset
|
1190 if (err == ESRCH || i >= last) |
| 6992 | 1191 break; |
| 1192 ASSERT(err == 0); | |
| 1193 db = dbuf_hold_level(dn, 1, i, FTAG); | |
| 1194 if (db) { | |
| 1195 dbuf_will_dirty(db, tx); | |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1196 dbuf_rele(db, FTAG); |
| 789 | 1197 } |
|
2445
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1198 } |
|
45c1310316ff
6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly
ahrens
parents:
2082
diff
changeset
|
1199 } |
| 6992 | 1200 done: |
| 1201 /* | |
| 1202 * Add this range to the dnode range list. | |
| 1203 * We will finish up this free operation in the syncing phase. | |
| 1204 */ | |
| 789 | 1205 mutex_enter(&dn->dn_mtx); |
| 1206 dnode_clear_range(dn, blkid, nblks, tx); | |
| 1207 { | |
| 1208 free_range_t *rp, *found; | |
| 1209 avl_index_t where; | |
| 1210 avl_tree_t *tree = &dn->dn_ranges[tx->tx_txg&TXG_MASK]; | |
| 1211 | |
| 1212 /* Add new range to dn_ranges */ | |
| 1213 rp = kmem_alloc(sizeof (free_range_t), KM_SLEEP); | |
| 1214 rp->fr_blkid = blkid; | |
| 1215 rp->fr_nblks = nblks; | |
| 1216 found = avl_find(tree, rp, &where); | |
| 1217 ASSERT(found == NULL); | |
| 1218 avl_insert(tree, rp, where); | |
| 1219 dprintf_dnode(dn, "blkid=%llu nblks=%llu txg=%llu\n", | |
| 1220 blkid, nblks, tx->tx_txg); | |
| 1221 } | |
| 1222 mutex_exit(&dn->dn_mtx); | |
| 1223 | |
| 6992 | 1224 dbuf_free_range(dn, blkid, blkid + nblks - 1, tx); |
| 789 | 1225 dnode_setdirty(dn, tx); |
| 1226 out: | |
| 6992 | 1227 if (trunc && dn->dn_maxblkid >= (off >> blkshift)) |
| 1228 dn->dn_maxblkid = (off >> blkshift ? (off >> blkshift) - 1 : 0); | |
| 1229 | |
| 789 | 1230 rw_exit(&dn->dn_struct_rwlock); |
| 1231 } | |
| 1232 | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1233 static boolean_t |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1234 dnode_spill_freed(dnode_t *dn) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1235 { |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1236 int i; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1237 |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1238 mutex_enter(&dn->dn_mtx); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1239 for (i = 0; i < TXG_SIZE; i++) { |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1240 if (dn->dn_rm_spillblk[i] == DN_KILL_SPILLBLK) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1241 break; |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1242 } |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1243 mutex_exit(&dn->dn_mtx); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1244 return (i < TXG_SIZE); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1245 } |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1246 |
| 789 | 1247 /* return TRUE if this blkid was freed in a recent txg, or FALSE if it wasn't */ |
| 1248 uint64_t | |
| 1249 dnode_block_freed(dnode_t *dn, uint64_t blkid) | |
| 1250 { | |
| 1251 free_range_t range_tofind; | |
| 1252 void *dp = spa_get_dsl(dn->dn_objset->os_spa); | |
| 1253 int i; | |
| 1254 | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1255 if (blkid == DMU_BONUS_BLKID) |
| 789 | 1256 return (FALSE); |
| 1257 | |
| 1258 /* | |
| 1259 * If we're in the process of opening the pool, dp will not be | |
| 1260 * set yet, but there shouldn't be anything dirty. | |
| 1261 */ | |
| 1262 if (dp == NULL) | |
| 1263 return (FALSE); | |
| 1264 | |
| 1265 if (dn->dn_free_txg) | |
| 1266 return (TRUE); | |
| 1267 | |
|
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1268 if (blkid == DMU_SPILL_BLKID) |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1269 return (dnode_spill_freed(dn)); |
|
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
10298
diff
changeset
|
1270 |
| 789 | 1271 range_tofind.fr_blkid = blkid; |
| 1272 mutex_enter(&dn->dn_mtx); | |
| 1273 for (i = 0; i < TXG_SIZE; i++) { | |
| 1274 free_range_t *range_found; | |
| 1275 avl_index_t idx; | |
| 1276 | |
| 1277 range_found = avl_find(&dn->dn_ranges[i], &range_tofind, &idx); | |
| 1278 if (range_found) { | |
| 1279 ASSERT(range_found->fr_nblks > 0); | |
| 1280 break; | |
| 1281 } | |
| 1282 range_found = avl_nearest(&dn->dn_ranges[i], idx, AVL_BEFORE); | |
| 1283 if (range_found && | |
| 1284 range_found->fr_blkid + range_found->fr_nblks > blkid) | |
| 1285 break; | |
| 1286 } | |
| 1287 mutex_exit(&dn->dn_mtx); | |
| 1288 return (i < TXG_SIZE); | |
| 1289 } | |
| 1290 | |
| 1291 /* call from syncing context when we actually write/free space for this dnode */ | |
| 1292 void | |
| 2082 | 1293 dnode_diduse_space(dnode_t *dn, int64_t delta) |
| 789 | 1294 { |
| 2082 | 1295 uint64_t space; |
| 1296 dprintf_dnode(dn, "dn=%p dnp=%p used=%llu delta=%lld\n", | |
| 789 | 1297 dn, dn->dn_phys, |
| 2082 | 1298 (u_longlong_t)dn->dn_phys->dn_used, |
| 1299 (longlong_t)delta); | |
| 789 | 1300 |
| 1301 mutex_enter(&dn->dn_mtx); | |
| 2082 | 1302 space = DN_USED_BYTES(dn->dn_phys); |
| 1303 if (delta > 0) { | |
| 1304 ASSERT3U(space + delta, >=, space); /* no overflow */ | |
| 789 | 1305 } else { |
| 2082 | 1306 ASSERT3U(space, >=, -delta); /* no underflow */ |
| 1307 } | |
| 1308 space += delta; | |
| 4577 | 1309 if (spa_version(dn->dn_objset->os_spa) < SPA_VERSION_DNODE_BYTES) { |
| 2082 | 1310 ASSERT((dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) == 0); |
| 1311 ASSERT3U(P2PHASE(space, 1<<DEV_BSHIFT), ==, 0); | |
| 1312 dn->dn_phys->dn_used = space >> DEV_BSHIFT; | |
| 1313 } else { | |
| 1314 dn->dn_phys->dn_used = space; | |
| 1315 dn->dn_phys->dn_flags |= DNODE_FLAG_USED_BYTES; | |
| 789 | 1316 } |
| 1317 mutex_exit(&dn->dn_mtx); | |
| 1318 } | |
| 1319 | |
| 1320 /* | |
| 1321 * Call when we think we're going to write/free space in open context. | |
| 1322 * Be conservative (ie. OK to write less than this or free more than | |
| 1323 * this, but don't write more or free less). | |
| 1324 */ | |
| 1325 void | |
| 1326 dnode_willuse_space(dnode_t *dn, int64_t space, dmu_tx_t *tx) | |
| 1327 { | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9950
diff
changeset
|
1328 objset_t *os = dn->dn_objset; |
| 789 | 1329 dsl_dataset_t *ds = os->os_dsl_dataset; |
| 1330 | |
| 1331 if (space > 0) | |
| 1332 space = spa_get_asize(os->os_spa, space); | |
| 1333 | |
| 1334 if (ds) | |
| 1335 dsl_dir_willuse_space(ds->ds_dir, space, tx); | |
| 1336 | |
| 1337 dmu_tx_willuse_space(tx, space); | |
| 1338 } | |
| 1339 | |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1340 /* |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1341 * This function scans a block at the indicated "level" looking for |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1342 * a hole or data (depending on 'flags'). If level > 0, then we are |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1343 * scanning an indirect block looking at its pointers. If level == 0, |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1344 * then we are looking at a block of dnodes. If we don't find what we |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1345 * are looking for in the block, we return ESRCH. Otherwise, return |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1346 * with *offset pointing to the beginning (if searching forwards) or |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1347 * end (if searching backwards) of the range covered by the block |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1348 * pointer we matched on (or dnode). |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1349 * |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1350 * The basic search algorithm used below by dnode_next_offset() is to |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1351 * use this function to search up the block tree (widen the search) until |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1352 * we find something (i.e., we don't return ESRCH) and then search back |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1353 * down the tree (narrow the search) until we reach our original search |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1354 * level. |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1355 */ |
| 789 | 1356 static int |
| 6992 | 1357 dnode_next_offset_level(dnode_t *dn, int flags, uint64_t *offset, |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1358 int lvl, uint64_t blkfill, uint64_t txg) |
| 789 | 1359 { |
| 1360 dmu_buf_impl_t *db = NULL; | |
| 1361 void *data = NULL; | |
| 1362 uint64_t epbs = dn->dn_phys->dn_indblkshift - SPA_BLKPTRSHIFT; | |
| 1363 uint64_t epb = 1ULL << epbs; | |
| 1364 uint64_t minfill, maxfill; | |
| 6992 | 1365 boolean_t hole; |
| 1366 int i, inc, error, span; | |
| 789 | 1367 |
| 1368 dprintf("probing object %llu offset %llx level %d of %u\n", | |
| 1369 dn->dn_object, *offset, lvl, dn->dn_phys->dn_nlevels); | |
| 1370 | |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8986
diff
changeset
|
1371 hole = ((flags & DNODE_FIND_HOLE) != 0); |
| 6992 | 1372 inc = (flags & DNODE_FIND_BACKWARDS) ? -1 : 1; |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1373 ASSERT(txg == 0 || !hole); |
| 6992 | 1374 |
| 789 | 1375 if (lvl == dn->dn_phys->dn_nlevels) { |
| 1376 error = 0; | |
| 1377 epb = dn->dn_phys->dn_nblkptr; | |
| 1378 data = dn->dn_phys->dn_blkptr; | |
| 1379 } else { | |
| 1380 uint64_t blkid = dbuf_whichblock(dn, *offset) >> (epbs * lvl); | |
| 1381 error = dbuf_hold_impl(dn, lvl, blkid, TRUE, FTAG, &db); | |
| 1382 if (error) { | |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1383 if (error != ENOENT) |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1384 return (error); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1385 if (hole) |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1386 return (0); |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1387 /* |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1388 * This can only happen when we are searching up |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1389 * the block tree for data. We don't really need to |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1390 * adjust the offset, as we will just end up looking |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1391 * at the pointer to this block in its parent, and its |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1392 * going to be unallocated, so we will skip over it. |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1393 */ |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1394 return (ESRCH); |
| 789 | 1395 } |
|
1793
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1396 error = dbuf_read(db, NULL, DB_RF_CANFAIL | DB_RF_HAVESTRUCT); |
|
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1397 if (error) { |
|
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1398 dbuf_rele(db, FTAG); |
|
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1399 return (error); |
|
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1400 } |
| 789 | 1401 data = db->db.db_data; |
| 1402 } | |
| 1403 | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1404 if (db && txg && |
|
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1405 (db->db_blkptr == NULL || db->db_blkptr->blk_birth <= txg)) { |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1406 /* |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1407 * This can only happen when we are searching up the tree |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1408 * and these conditions mean that we need to keep climbing. |
|
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1409 */ |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1410 error = ESRCH; |
|
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1411 } else if (lvl == 0) { |
| 789 | 1412 dnode_phys_t *dnp = data; |
| 1413 span = DNODE_SHIFT; | |
| 1414 ASSERT(dn->dn_type == DMU_OT_DNODE); | |
| 1415 | |
| 6992 | 1416 for (i = (*offset >> span) & (blkfill - 1); |
| 1417 i >= 0 && i < blkfill; i += inc) { | |
|
9409
9dc3f17354ed
6809683 zfs destroy fails to free object in open context, stops up txg train
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
9396
diff
changeset
|
1418 if ((dnp[i].dn_type == DMU_OT_NONE) == hole) |
| 789 | 1419 break; |
| 6992 | 1420 *offset += (1ULL << span) * inc; |
| 789 | 1421 } |
| 6992 | 1422 if (i < 0 || i == blkfill) |
| 789 | 1423 error = ESRCH; |
| 1424 } else { | |
| 1425 blkptr_t *bp = data; | |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1426 uint64_t start = *offset; |
| 789 | 1427 span = (lvl - 1) * epbs + dn->dn_datablkshift; |
| 1428 minfill = 0; | |
| 1429 maxfill = blkfill << ((lvl - 1) * epbs); | |
| 1430 | |
| 1431 if (hole) | |
| 1432 maxfill--; | |
| 1433 else | |
| 1434 minfill++; | |
| 1435 | |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1436 *offset = *offset >> span; |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1437 for (i = BF64_GET(*offset, 0, epbs); |
| 6992 | 1438 i >= 0 && i < epb; i += inc) { |
| 789 | 1439 if (bp[i].blk_fill >= minfill && |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1440 bp[i].blk_fill <= maxfill && |
|
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7332
diff
changeset
|
1441 (hole || bp[i].blk_birth > txg)) |
| 789 | 1442 break; |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1443 if (inc > 0 || *offset > 0) |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1444 *offset += inc; |
| 789 | 1445 } |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1446 *offset = *offset << span; |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1447 if (inc < 0) { |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1448 /* traversing backwards; position offset at the end */ |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1449 ASSERT3U(*offset, <=, start); |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1450 *offset = MIN(*offset + (1ULL << span) - 1, start); |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1451 } else if (*offset < start) { |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1452 *offset = start; |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1453 } |
|
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9409
diff
changeset
|
1454 if (i < 0 || i >= epb) |
| 789 | 1455 error = ESRCH; |
| 1456 } | |
| 1457 | |
| 1458 if (db) | |
| 1544 | 1459 dbuf_rele(db, FTAG); |
| 789 | 1460 |
| 1461 return (error); | |
| 1462 } | |
| 1463 | |
| 1464 /* | |
| 1465 * Find the next hole, data, or sparse region at or after *offset. | |
| 1466 * The value 'blkfill' tells us how many items we expect to find | |
| 1467 * in an L0 data block; this value is 1 for normal objects, | |
| 1468 * DNODES_PER_BLOCK for the meta dnode, and some fraction of | |
| 1469 * DNODES_PER_BLOCK when searching for sparse regions thereof. | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1470 * |
| 789 | 1471 * Examples: |
| 1472 * | |
| 6992 | 1473 * dnode_next_offset(dn, flags, offset, 1, 1, 0); |
| 1474 * Finds the next/previous hole/data in a file. | |
| 789 | 1475 * Used in dmu_offset_next(). |
| 1476 * | |
| 6992 | 1477 * dnode_next_offset(mdn, flags, offset, 0, DNODES_PER_BLOCK, txg); |
| 789 | 1478 * Finds the next free/allocated dnode an objset's meta-dnode. |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1479 * Only finds objects that have new contents since txg (ie. |
|
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1480 * bonus buffer changes and content removal are ignored). |
| 789 | 1481 * Used in dmu_object_next(). |
| 1482 * | |
| 6992 | 1483 * dnode_next_offset(mdn, DNODE_FIND_HOLE, offset, 2, DNODES_PER_BLOCK >> 2, 0); |
| 789 | 1484 * Finds the next L2 meta-dnode bp that's at most 1/4 full. |
| 1485 * Used in dmu_object_alloc(). | |
| 1486 */ | |
| 1487 int | |
| 6992 | 1488 dnode_next_offset(dnode_t *dn, int flags, uint64_t *offset, |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1489 int minlvl, uint64_t blkfill, uint64_t txg) |
| 789 | 1490 { |
| 6992 | 1491 uint64_t initial_offset = *offset; |
| 789 | 1492 int lvl, maxlvl; |
| 1493 int error = 0; | |
| 1494 | |
| 6992 | 1495 if (!(flags & DNODE_FIND_HAVELOCK)) |
| 1496 rw_enter(&dn->dn_struct_rwlock, RW_READER); | |
| 789 | 1497 |
| 1498 if (dn->dn_phys->dn_nlevels == 0) { | |
| 6992 | 1499 error = ESRCH; |
| 1500 goto out; | |
| 789 | 1501 } |
| 1502 | |
| 1503 if (dn->dn_datablkshift == 0) { | |
| 1504 if (*offset < dn->dn_datablksz) { | |
| 6992 | 1505 if (flags & DNODE_FIND_HOLE) |
| 789 | 1506 *offset = dn->dn_datablksz; |
| 1507 } else { | |
| 1508 error = ESRCH; | |
| 1509 } | |
| 6992 | 1510 goto out; |
| 789 | 1511 } |
| 1512 | |
| 1513 maxlvl = dn->dn_phys->dn_nlevels; | |
| 1514 | |
| 1515 for (lvl = minlvl; lvl <= maxlvl; lvl++) { | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1516 error = dnode_next_offset_level(dn, |
| 6992 | 1517 flags, offset, lvl, blkfill, txg); |
|
1793
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1518 if (error != ESRCH) |
| 789 | 1519 break; |
| 1520 } | |
| 1521 | |
| 6992 | 1522 while (error == 0 && --lvl >= minlvl) { |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1523 error = dnode_next_offset_level(dn, |
| 6992 | 1524 flags, offset, lvl, blkfill, txg); |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1525 } |
| 789 | 1526 |
| 6992 | 1527 if (error == 0 && (flags & DNODE_FIND_BACKWARDS ? |
| 1528 initial_offset < *offset : initial_offset > *offset)) | |
|
1793
d371fba21a3e
6407444 unhandled i/o error from dnode_next_offset_level()
ahrens
parents:
1646
diff
changeset
|
1529 error = ESRCH; |
| 6992 | 1530 out: |
| 1531 if (!(flags & DNODE_FIND_HAVELOCK)) | |
| 1532 rw_exit(&dn->dn_struct_rwlock); | |
| 789 | 1533 |
| 1534 return (error); | |
| 1535 } |