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428870ff BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
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 | /* | |
22 | * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. | |
df7eeccc | 23 | * Copyright (c) 2012, 2016 by Delphix. All rights reserved. |
0c66c32d | 24 | * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
428870ff BB |
25 | */ |
26 | ||
27 | #include <sys/dsl_dataset.h> | |
28 | #include <sys/dmu.h> | |
29 | #include <sys/refcount.h> | |
30 | #include <sys/zap.h> | |
31 | #include <sys/zfs_context.h> | |
32 | #include <sys/dsl_pool.h> | |
33 | ||
330d06f9 MA |
34 | /* |
35 | * Deadlist concurrency: | |
36 | * | |
37 | * Deadlists can only be modified from the syncing thread. | |
38 | * | |
39 | * Except for dsl_deadlist_insert(), it can only be modified with the | |
40 | * dp_config_rwlock held with RW_WRITER. | |
41 | * | |
42 | * The accessors (dsl_deadlist_space() and dsl_deadlist_space_range()) can | |
43 | * be called concurrently, from open context, with the dl_config_rwlock held | |
44 | * with RW_READER. | |
45 | * | |
46 | * Therefore, we only need to provide locking between dsl_deadlist_insert() and | |
47 | * the accessors, protecting: | |
48 | * dl_phys->dl_used,comp,uncomp | |
49 | * and protecting the dl_tree from being loaded. | |
50 | * The locking is provided by dl_lock. Note that locking on the bpobj_t | |
51 | * provides its own locking, and dl_oldfmt is immutable. | |
52 | */ | |
53 | ||
428870ff BB |
54 | static int |
55 | dsl_deadlist_compare(const void *arg1, const void *arg2) | |
56 | { | |
ee36c709 GN |
57 | const dsl_deadlist_entry_t *dle1 = (const dsl_deadlist_entry_t *)arg1; |
58 | const dsl_deadlist_entry_t *dle2 = (const dsl_deadlist_entry_t *)arg2; | |
428870ff | 59 | |
ee36c709 | 60 | return (AVL_CMP(dle1->dle_mintxg, dle2->dle_mintxg)); |
428870ff BB |
61 | } |
62 | ||
63 | static void | |
64 | dsl_deadlist_load_tree(dsl_deadlist_t *dl) | |
65 | { | |
66 | zap_cursor_t zc; | |
67 | zap_attribute_t za; | |
68 | ||
df7eeccc MA |
69 | ASSERT(MUTEX_HELD(&dl->dl_lock)); |
70 | ||
428870ff BB |
71 | ASSERT(!dl->dl_oldfmt); |
72 | if (dl->dl_havetree) | |
73 | return; | |
74 | ||
75 | avl_create(&dl->dl_tree, dsl_deadlist_compare, | |
76 | sizeof (dsl_deadlist_entry_t), | |
77 | offsetof(dsl_deadlist_entry_t, dle_node)); | |
78 | for (zap_cursor_init(&zc, dl->dl_os, dl->dl_object); | |
79 | zap_cursor_retrieve(&zc, &za) == 0; | |
80 | zap_cursor_advance(&zc)) { | |
e19572e4 YP |
81 | dsl_deadlist_entry_t *dle = kmem_alloc(sizeof (*dle), KM_SLEEP); |
82 | dle->dle_mintxg = zfs_strtonum(za.za_name, NULL); | |
428870ff BB |
83 | VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, |
84 | za.za_first_integer)); | |
85 | avl_add(&dl->dl_tree, dle); | |
86 | } | |
87 | zap_cursor_fini(&zc); | |
88 | dl->dl_havetree = B_TRUE; | |
89 | } | |
90 | ||
91 | void | |
92 | dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object) | |
93 | { | |
94 | dmu_object_info_t doi; | |
95 | ||
a1d477c2 MA |
96 | ASSERT(!dsl_deadlist_is_open(dl)); |
97 | ||
428870ff BB |
98 | mutex_init(&dl->dl_lock, NULL, MUTEX_DEFAULT, NULL); |
99 | dl->dl_os = os; | |
100 | dl->dl_object = object; | |
101 | VERIFY3U(0, ==, dmu_bonus_hold(os, object, dl, &dl->dl_dbuf)); | |
102 | dmu_object_info_from_db(dl->dl_dbuf, &doi); | |
103 | if (doi.doi_type == DMU_OT_BPOBJ) { | |
104 | dmu_buf_rele(dl->dl_dbuf, dl); | |
105 | dl->dl_dbuf = NULL; | |
106 | dl->dl_oldfmt = B_TRUE; | |
107 | VERIFY3U(0, ==, bpobj_open(&dl->dl_bpobj, os, object)); | |
108 | return; | |
109 | } | |
110 | ||
111 | dl->dl_oldfmt = B_FALSE; | |
112 | dl->dl_phys = dl->dl_dbuf->db_data; | |
113 | dl->dl_havetree = B_FALSE; | |
114 | } | |
115 | ||
a1d477c2 MA |
116 | boolean_t |
117 | dsl_deadlist_is_open(dsl_deadlist_t *dl) | |
118 | { | |
119 | return (dl->dl_os != NULL); | |
120 | } | |
121 | ||
428870ff BB |
122 | void |
123 | dsl_deadlist_close(dsl_deadlist_t *dl) | |
124 | { | |
125 | void *cookie = NULL; | |
126 | dsl_deadlist_entry_t *dle; | |
127 | ||
a1d477c2 | 128 | ASSERT(dsl_deadlist_is_open(dl)); |
c17486b2 | 129 | mutex_destroy(&dl->dl_lock); |
0c66c32d | 130 | |
428870ff BB |
131 | if (dl->dl_oldfmt) { |
132 | dl->dl_oldfmt = B_FALSE; | |
133 | bpobj_close(&dl->dl_bpobj); | |
a1d477c2 MA |
134 | dl->dl_os = NULL; |
135 | dl->dl_object = 0; | |
428870ff BB |
136 | return; |
137 | } | |
138 | ||
139 | if (dl->dl_havetree) { | |
140 | while ((dle = avl_destroy_nodes(&dl->dl_tree, &cookie)) | |
141 | != NULL) { | |
142 | bpobj_close(&dle->dle_bpobj); | |
143 | kmem_free(dle, sizeof (*dle)); | |
144 | } | |
145 | avl_destroy(&dl->dl_tree); | |
146 | } | |
147 | dmu_buf_rele(dl->dl_dbuf, dl); | |
428870ff BB |
148 | dl->dl_dbuf = NULL; |
149 | dl->dl_phys = NULL; | |
a1d477c2 MA |
150 | dl->dl_os = NULL; |
151 | dl->dl_object = 0; | |
428870ff BB |
152 | } |
153 | ||
154 | uint64_t | |
155 | dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx) | |
156 | { | |
157 | if (spa_version(dmu_objset_spa(os)) < SPA_VERSION_DEADLISTS) | |
f1512ee6 | 158 | return (bpobj_alloc(os, SPA_OLD_MAXBLOCKSIZE, tx)); |
428870ff BB |
159 | return (zap_create(os, DMU_OT_DEADLIST, DMU_OT_DEADLIST_HDR, |
160 | sizeof (dsl_deadlist_phys_t), tx)); | |
161 | } | |
162 | ||
163 | void | |
164 | dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx) | |
165 | { | |
166 | dmu_object_info_t doi; | |
167 | zap_cursor_t zc; | |
168 | zap_attribute_t za; | |
169 | ||
170 | VERIFY3U(0, ==, dmu_object_info(os, dlobj, &doi)); | |
171 | if (doi.doi_type == DMU_OT_BPOBJ) { | |
172 | bpobj_free(os, dlobj, tx); | |
173 | return; | |
174 | } | |
175 | ||
176 | for (zap_cursor_init(&zc, os, dlobj); | |
177 | zap_cursor_retrieve(&zc, &za) == 0; | |
753c3839 MA |
178 | zap_cursor_advance(&zc)) { |
179 | uint64_t obj = za.za_first_integer; | |
180 | if (obj == dmu_objset_pool(os)->dp_empty_bpobj) | |
181 | bpobj_decr_empty(os, tx); | |
182 | else | |
183 | bpobj_free(os, obj, tx); | |
184 | } | |
428870ff BB |
185 | zap_cursor_fini(&zc); |
186 | VERIFY3U(0, ==, dmu_object_free(os, dlobj, tx)); | |
187 | } | |
188 | ||
753c3839 MA |
189 | static void |
190 | dle_enqueue(dsl_deadlist_t *dl, dsl_deadlist_entry_t *dle, | |
191 | const blkptr_t *bp, dmu_tx_t *tx) | |
192 | { | |
df7eeccc | 193 | ASSERT(MUTEX_HELD(&dl->dl_lock)); |
753c3839 MA |
194 | if (dle->dle_bpobj.bpo_object == |
195 | dmu_objset_pool(dl->dl_os)->dp_empty_bpobj) { | |
f1512ee6 | 196 | uint64_t obj = bpobj_alloc(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); |
753c3839 MA |
197 | bpobj_close(&dle->dle_bpobj); |
198 | bpobj_decr_empty(dl->dl_os, tx); | |
199 | VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); | |
200 | VERIFY3U(0, ==, zap_update_int_key(dl->dl_os, dl->dl_object, | |
201 | dle->dle_mintxg, obj, tx)); | |
202 | } | |
203 | bpobj_enqueue(&dle->dle_bpobj, bp, tx); | |
204 | } | |
205 | ||
206 | static void | |
207 | dle_enqueue_subobj(dsl_deadlist_t *dl, dsl_deadlist_entry_t *dle, | |
208 | uint64_t obj, dmu_tx_t *tx) | |
209 | { | |
df7eeccc | 210 | ASSERT(MUTEX_HELD(&dl->dl_lock)); |
753c3839 MA |
211 | if (dle->dle_bpobj.bpo_object != |
212 | dmu_objset_pool(dl->dl_os)->dp_empty_bpobj) { | |
213 | bpobj_enqueue_subobj(&dle->dle_bpobj, obj, tx); | |
214 | } else { | |
215 | bpobj_close(&dle->dle_bpobj); | |
216 | bpobj_decr_empty(dl->dl_os, tx); | |
217 | VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); | |
218 | VERIFY3U(0, ==, zap_update_int_key(dl->dl_os, dl->dl_object, | |
219 | dle->dle_mintxg, obj, tx)); | |
220 | } | |
221 | } | |
222 | ||
428870ff BB |
223 | void |
224 | dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, dmu_tx_t *tx) | |
225 | { | |
226 | dsl_deadlist_entry_t dle_tofind; | |
227 | dsl_deadlist_entry_t *dle; | |
228 | avl_index_t where; | |
229 | ||
230 | if (dl->dl_oldfmt) { | |
231 | bpobj_enqueue(&dl->dl_bpobj, bp, tx); | |
232 | return; | |
233 | } | |
234 | ||
df7eeccc | 235 | mutex_enter(&dl->dl_lock); |
428870ff BB |
236 | dsl_deadlist_load_tree(dl); |
237 | ||
238 | dmu_buf_will_dirty(dl->dl_dbuf, tx); | |
428870ff BB |
239 | dl->dl_phys->dl_used += |
240 | bp_get_dsize_sync(dmu_objset_spa(dl->dl_os), bp); | |
241 | dl->dl_phys->dl_comp += BP_GET_PSIZE(bp); | |
242 | dl->dl_phys->dl_uncomp += BP_GET_UCSIZE(bp); | |
428870ff BB |
243 | |
244 | dle_tofind.dle_mintxg = bp->blk_birth; | |
245 | dle = avl_find(&dl->dl_tree, &dle_tofind, &where); | |
246 | if (dle == NULL) | |
247 | dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE); | |
248 | else | |
249 | dle = AVL_PREV(&dl->dl_tree, dle); | |
eba9e745 BB |
250 | |
251 | if (dle == NULL) { | |
252 | zfs_panic_recover("blkptr at %p has invalid BLK_BIRTH %llu", | |
253 | bp, (longlong_t)bp->blk_birth); | |
254 | dle = avl_first(&dl->dl_tree); | |
255 | } | |
256 | ||
257 | ASSERT3P(dle, !=, NULL); | |
753c3839 | 258 | dle_enqueue(dl, dle, bp, tx); |
df7eeccc | 259 | mutex_exit(&dl->dl_lock); |
428870ff BB |
260 | } |
261 | ||
262 | /* | |
263 | * Insert new key in deadlist, which must be > all current entries. | |
264 | * mintxg is not inclusive. | |
265 | */ | |
266 | void | |
267 | dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx) | |
268 | { | |
269 | uint64_t obj; | |
270 | dsl_deadlist_entry_t *dle; | |
271 | ||
272 | if (dl->dl_oldfmt) | |
273 | return; | |
274 | ||
79c76d5b | 275 | dle = kmem_alloc(sizeof (*dle), KM_SLEEP); |
428870ff | 276 | dle->dle_mintxg = mintxg; |
df7eeccc MA |
277 | |
278 | mutex_enter(&dl->dl_lock); | |
279 | dsl_deadlist_load_tree(dl); | |
280 | ||
f1512ee6 | 281 | obj = bpobj_alloc_empty(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); |
428870ff BB |
282 | VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); |
283 | avl_add(&dl->dl_tree, dle); | |
284 | ||
285 | VERIFY3U(0, ==, zap_add_int_key(dl->dl_os, dl->dl_object, | |
286 | mintxg, obj, tx)); | |
df7eeccc | 287 | mutex_exit(&dl->dl_lock); |
428870ff BB |
288 | } |
289 | ||
290 | /* | |
291 | * Remove this key, merging its entries into the previous key. | |
292 | */ | |
293 | void | |
294 | dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx) | |
295 | { | |
296 | dsl_deadlist_entry_t dle_tofind; | |
297 | dsl_deadlist_entry_t *dle, *dle_prev; | |
298 | ||
299 | if (dl->dl_oldfmt) | |
300 | return; | |
301 | ||
df7eeccc | 302 | mutex_enter(&dl->dl_lock); |
428870ff BB |
303 | dsl_deadlist_load_tree(dl); |
304 | ||
305 | dle_tofind.dle_mintxg = mintxg; | |
306 | dle = avl_find(&dl->dl_tree, &dle_tofind, NULL); | |
307 | dle_prev = AVL_PREV(&dl->dl_tree, dle); | |
308 | ||
753c3839 | 309 | dle_enqueue_subobj(dl, dle_prev, dle->dle_bpobj.bpo_object, tx); |
428870ff BB |
310 | |
311 | avl_remove(&dl->dl_tree, dle); | |
312 | bpobj_close(&dle->dle_bpobj); | |
313 | kmem_free(dle, sizeof (*dle)); | |
314 | ||
315 | VERIFY3U(0, ==, zap_remove_int(dl->dl_os, dl->dl_object, mintxg, tx)); | |
df7eeccc | 316 | mutex_exit(&dl->dl_lock); |
428870ff BB |
317 | } |
318 | ||
319 | /* | |
320 | * Walk ds's snapshots to regenerate generate ZAP & AVL. | |
321 | */ | |
322 | static void | |
323 | dsl_deadlist_regenerate(objset_t *os, uint64_t dlobj, | |
324 | uint64_t mrs_obj, dmu_tx_t *tx) | |
325 | { | |
a1d477c2 | 326 | dsl_deadlist_t dl = { 0 }; |
428870ff BB |
327 | dsl_pool_t *dp = dmu_objset_pool(os); |
328 | ||
329 | dsl_deadlist_open(&dl, os, dlobj); | |
330 | if (dl.dl_oldfmt) { | |
331 | dsl_deadlist_close(&dl); | |
332 | return; | |
333 | } | |
334 | ||
335 | while (mrs_obj != 0) { | |
336 | dsl_dataset_t *ds; | |
337 | VERIFY3U(0, ==, dsl_dataset_hold_obj(dp, mrs_obj, FTAG, &ds)); | |
d683ddbb JG |
338 | dsl_deadlist_add_key(&dl, |
339 | dsl_dataset_phys(ds)->ds_prev_snap_txg, tx); | |
340 | mrs_obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; | |
428870ff BB |
341 | dsl_dataset_rele(ds, FTAG); |
342 | } | |
343 | dsl_deadlist_close(&dl); | |
344 | } | |
345 | ||
346 | uint64_t | |
347 | dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg, | |
348 | uint64_t mrs_obj, dmu_tx_t *tx) | |
349 | { | |
350 | dsl_deadlist_entry_t *dle; | |
351 | uint64_t newobj; | |
352 | ||
353 | newobj = dsl_deadlist_alloc(dl->dl_os, tx); | |
354 | ||
355 | if (dl->dl_oldfmt) { | |
356 | dsl_deadlist_regenerate(dl->dl_os, newobj, mrs_obj, tx); | |
357 | return (newobj); | |
358 | } | |
359 | ||
df7eeccc | 360 | mutex_enter(&dl->dl_lock); |
428870ff BB |
361 | dsl_deadlist_load_tree(dl); |
362 | ||
363 | for (dle = avl_first(&dl->dl_tree); dle; | |
364 | dle = AVL_NEXT(&dl->dl_tree, dle)) { | |
365 | uint64_t obj; | |
366 | ||
367 | if (dle->dle_mintxg >= maxtxg) | |
368 | break; | |
369 | ||
f1512ee6 | 370 | obj = bpobj_alloc_empty(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); |
428870ff BB |
371 | VERIFY3U(0, ==, zap_add_int_key(dl->dl_os, newobj, |
372 | dle->dle_mintxg, obj, tx)); | |
373 | } | |
df7eeccc | 374 | mutex_exit(&dl->dl_lock); |
428870ff BB |
375 | return (newobj); |
376 | } | |
377 | ||
378 | void | |
379 | dsl_deadlist_space(dsl_deadlist_t *dl, | |
380 | uint64_t *usedp, uint64_t *compp, uint64_t *uncompp) | |
381 | { | |
a1d477c2 | 382 | ASSERT(dsl_deadlist_is_open(dl)); |
428870ff BB |
383 | if (dl->dl_oldfmt) { |
384 | VERIFY3U(0, ==, bpobj_space(&dl->dl_bpobj, | |
385 | usedp, compp, uncompp)); | |
386 | return; | |
387 | } | |
388 | ||
389 | mutex_enter(&dl->dl_lock); | |
390 | *usedp = dl->dl_phys->dl_used; | |
391 | *compp = dl->dl_phys->dl_comp; | |
392 | *uncompp = dl->dl_phys->dl_uncomp; | |
393 | mutex_exit(&dl->dl_lock); | |
394 | } | |
395 | ||
396 | /* | |
397 | * return space used in the range (mintxg, maxtxg]. | |
398 | * Includes maxtxg, does not include mintxg. | |
399 | * mintxg and maxtxg must both be keys in the deadlist (unless maxtxg is | |
330d06f9 | 400 | * larger than any bp in the deadlist (eg. UINT64_MAX)). |
428870ff BB |
401 | */ |
402 | void | |
403 | dsl_deadlist_space_range(dsl_deadlist_t *dl, uint64_t mintxg, uint64_t maxtxg, | |
404 | uint64_t *usedp, uint64_t *compp, uint64_t *uncompp) | |
405 | { | |
428870ff | 406 | dsl_deadlist_entry_t *dle; |
330d06f9 | 407 | dsl_deadlist_entry_t dle_tofind; |
428870ff BB |
408 | avl_index_t where; |
409 | ||
410 | if (dl->dl_oldfmt) { | |
411 | VERIFY3U(0, ==, bpobj_space_range(&dl->dl_bpobj, | |
412 | mintxg, maxtxg, usedp, compp, uncompp)); | |
413 | return; | |
414 | } | |
415 | ||
428870ff BB |
416 | *usedp = *compp = *uncompp = 0; |
417 | ||
330d06f9 MA |
418 | mutex_enter(&dl->dl_lock); |
419 | dsl_deadlist_load_tree(dl); | |
428870ff BB |
420 | dle_tofind.dle_mintxg = mintxg; |
421 | dle = avl_find(&dl->dl_tree, &dle_tofind, &where); | |
422 | /* | |
423 | * If we don't find this mintxg, there shouldn't be anything | |
424 | * after it either. | |
425 | */ | |
426 | ASSERT(dle != NULL || | |
427 | avl_nearest(&dl->dl_tree, where, AVL_AFTER) == NULL); | |
330d06f9 | 428 | |
428870ff BB |
429 | for (; dle && dle->dle_mintxg < maxtxg; |
430 | dle = AVL_NEXT(&dl->dl_tree, dle)) { | |
431 | uint64_t used, comp, uncomp; | |
432 | ||
433 | VERIFY3U(0, ==, bpobj_space(&dle->dle_bpobj, | |
434 | &used, &comp, &uncomp)); | |
435 | ||
436 | *usedp += used; | |
437 | *compp += comp; | |
438 | *uncompp += uncomp; | |
439 | } | |
330d06f9 | 440 | mutex_exit(&dl->dl_lock); |
428870ff BB |
441 | } |
442 | ||
443 | static void | |
444 | dsl_deadlist_insert_bpobj(dsl_deadlist_t *dl, uint64_t obj, uint64_t birth, | |
445 | dmu_tx_t *tx) | |
446 | { | |
447 | dsl_deadlist_entry_t dle_tofind; | |
448 | dsl_deadlist_entry_t *dle; | |
449 | avl_index_t where; | |
450 | uint64_t used, comp, uncomp; | |
451 | bpobj_t bpo; | |
452 | ||
df7eeccc MA |
453 | ASSERT(MUTEX_HELD(&dl->dl_lock)); |
454 | ||
428870ff BB |
455 | VERIFY3U(0, ==, bpobj_open(&bpo, dl->dl_os, obj)); |
456 | VERIFY3U(0, ==, bpobj_space(&bpo, &used, &comp, &uncomp)); | |
457 | bpobj_close(&bpo); | |
458 | ||
459 | dsl_deadlist_load_tree(dl); | |
460 | ||
461 | dmu_buf_will_dirty(dl->dl_dbuf, tx); | |
428870ff BB |
462 | dl->dl_phys->dl_used += used; |
463 | dl->dl_phys->dl_comp += comp; | |
464 | dl->dl_phys->dl_uncomp += uncomp; | |
428870ff BB |
465 | |
466 | dle_tofind.dle_mintxg = birth; | |
467 | dle = avl_find(&dl->dl_tree, &dle_tofind, &where); | |
468 | if (dle == NULL) | |
469 | dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE); | |
753c3839 | 470 | dle_enqueue_subobj(dl, dle, obj, tx); |
428870ff BB |
471 | } |
472 | ||
473 | static int | |
474 | dsl_deadlist_insert_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
475 | { | |
476 | dsl_deadlist_t *dl = arg; | |
477 | dsl_deadlist_insert(dl, bp, tx); | |
478 | return (0); | |
479 | } | |
480 | ||
481 | /* | |
482 | * Merge the deadlist pointed to by 'obj' into dl. obj will be left as | |
483 | * an empty deadlist. | |
484 | */ | |
485 | void | |
486 | dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx) | |
487 | { | |
488 | zap_cursor_t zc; | |
489 | zap_attribute_t za; | |
490 | dmu_buf_t *bonus; | |
491 | dsl_deadlist_phys_t *dlp; | |
492 | dmu_object_info_t doi; | |
493 | ||
494 | VERIFY3U(0, ==, dmu_object_info(dl->dl_os, obj, &doi)); | |
495 | if (doi.doi_type == DMU_OT_BPOBJ) { | |
496 | bpobj_t bpo; | |
497 | VERIFY3U(0, ==, bpobj_open(&bpo, dl->dl_os, obj)); | |
498 | VERIFY3U(0, ==, bpobj_iterate(&bpo, | |
499 | dsl_deadlist_insert_cb, dl, tx)); | |
500 | bpobj_close(&bpo); | |
501 | return; | |
502 | } | |
503 | ||
df7eeccc | 504 | mutex_enter(&dl->dl_lock); |
428870ff BB |
505 | for (zap_cursor_init(&zc, dl->dl_os, obj); |
506 | zap_cursor_retrieve(&zc, &za) == 0; | |
507 | zap_cursor_advance(&zc)) { | |
e19572e4 | 508 | uint64_t mintxg = zfs_strtonum(za.za_name, NULL); |
428870ff BB |
509 | dsl_deadlist_insert_bpobj(dl, za.za_first_integer, mintxg, tx); |
510 | VERIFY3U(0, ==, zap_remove_int(dl->dl_os, obj, mintxg, tx)); | |
511 | } | |
512 | zap_cursor_fini(&zc); | |
513 | ||
514 | VERIFY3U(0, ==, dmu_bonus_hold(dl->dl_os, obj, FTAG, &bonus)); | |
515 | dlp = bonus->db_data; | |
516 | dmu_buf_will_dirty(bonus, tx); | |
517 | bzero(dlp, sizeof (*dlp)); | |
518 | dmu_buf_rele(bonus, FTAG); | |
df7eeccc | 519 | mutex_exit(&dl->dl_lock); |
428870ff BB |
520 | } |
521 | ||
522 | /* | |
523 | * Remove entries on dl that are >= mintxg, and put them on the bpobj. | |
524 | */ | |
525 | void | |
526 | dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg, | |
527 | dmu_tx_t *tx) | |
528 | { | |
529 | dsl_deadlist_entry_t dle_tofind; | |
530 | dsl_deadlist_entry_t *dle; | |
531 | avl_index_t where; | |
532 | ||
533 | ASSERT(!dl->dl_oldfmt); | |
df7eeccc MA |
534 | |
535 | mutex_enter(&dl->dl_lock); | |
428870ff BB |
536 | dmu_buf_will_dirty(dl->dl_dbuf, tx); |
537 | dsl_deadlist_load_tree(dl); | |
538 | ||
539 | dle_tofind.dle_mintxg = mintxg; | |
540 | dle = avl_find(&dl->dl_tree, &dle_tofind, &where); | |
541 | if (dle == NULL) | |
542 | dle = avl_nearest(&dl->dl_tree, where, AVL_AFTER); | |
543 | while (dle) { | |
544 | uint64_t used, comp, uncomp; | |
545 | dsl_deadlist_entry_t *dle_next; | |
546 | ||
547 | bpobj_enqueue_subobj(bpo, dle->dle_bpobj.bpo_object, tx); | |
548 | ||
549 | VERIFY3U(0, ==, bpobj_space(&dle->dle_bpobj, | |
550 | &used, &comp, &uncomp)); | |
428870ff BB |
551 | ASSERT3U(dl->dl_phys->dl_used, >=, used); |
552 | ASSERT3U(dl->dl_phys->dl_comp, >=, comp); | |
553 | ASSERT3U(dl->dl_phys->dl_uncomp, >=, uncomp); | |
554 | dl->dl_phys->dl_used -= used; | |
555 | dl->dl_phys->dl_comp -= comp; | |
556 | dl->dl_phys->dl_uncomp -= uncomp; | |
428870ff BB |
557 | |
558 | VERIFY3U(0, ==, zap_remove_int(dl->dl_os, dl->dl_object, | |
559 | dle->dle_mintxg, tx)); | |
560 | ||
561 | dle_next = AVL_NEXT(&dl->dl_tree, dle); | |
562 | avl_remove(&dl->dl_tree, dle); | |
563 | bpobj_close(&dle->dle_bpobj); | |
564 | kmem_free(dle, sizeof (*dle)); | |
565 | dle = dle_next; | |
566 | } | |
df7eeccc | 567 | mutex_exit(&dl->dl_lock); |
428870ff | 568 | } |