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/*
| 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 2008 Sun Microsystems, Inc. All rights reserved.
| 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
23 * Use is subject to license terms.
24 */
25
26#include <sys/dsl_pool.h>
27#include <sys/dsl_dataset.h>
28#include <sys/dsl_dir.h>
29#include <sys/dsl_synctask.h>
30#include <sys/dmu_tx.h>
31#include <sys/dmu_objset.h>
32#include <sys/arc.h>
33#include <sys/zap.h>
34#include <sys/zio.h>
35#include <sys/zfs_context.h>
36#include <sys/fs/zfs.h>
37#include <sys/zfs_znode.h>
38#include <sys/spa_impl.h>
39
40int zfs_no_write_throttle = 0;
41int zfs_write_limit_shift = 3; /* 1/8th of physical memory */
42int zfs_txg_synctime = 5; /* target secs to sync a txg */
43
44uint64_t zfs_write_limit_min = 32 << 20; /* min write limit is 32MB */
45uint64_t zfs_write_limit_max = 0; /* max data payload per txg */
46uint64_t zfs_write_limit_inflated = 0;
47uint64_t zfs_write_limit_override = 0;
48extern uint64_t zfs_write_limit_min;
49
50kmutex_t zfs_write_limit_lock;
51
52static pgcnt_t old_physmem = 0;
53
54static int
55dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **ddp)
56{
57 uint64_t obj;
58 int err;
59
60 err = zap_lookup(dp->dp_meta_objset,
61 dp->dp_root_dir->dd_phys->dd_child_dir_zapobj,
62 name, sizeof (obj), 1, &obj);
63 if (err)
64 return (err);
65
66 return (dsl_dir_open_obj(dp, obj, name, dp, ddp));
67}
68
69static dsl_pool_t *
70dsl_pool_open_impl(spa_t *spa, uint64_t txg)
71{
72 dsl_pool_t *dp;
73 blkptr_t *bp = spa_get_rootblkptr(spa);
74
75 dp = kmem_zalloc(sizeof (dsl_pool_t), KM_SLEEP);
76 dp->dp_spa = spa;
77 dp->dp_meta_rootbp = *bp;
78 rw_init(&dp->dp_config_rwlock, NULL, RW_DEFAULT, NULL);
79 dp->dp_write_limit = zfs_write_limit_min;
80 txg_init(dp, txg);
81
82 txg_list_create(&dp->dp_dirty_datasets,
83 offsetof(dsl_dataset_t, ds_dirty_link));
84 txg_list_create(&dp->dp_dirty_dirs,
85 offsetof(dsl_dir_t, dd_dirty_link));
86 txg_list_create(&dp->dp_sync_tasks,
87 offsetof(dsl_sync_task_group_t, dstg_node));
88 list_create(&dp->dp_synced_datasets, sizeof (dsl_dataset_t),
89 offsetof(dsl_dataset_t, ds_synced_link));
90
91 mutex_init(&dp->dp_lock, NULL, MUTEX_DEFAULT, NULL);
92 mutex_init(&dp->dp_scrub_cancel_lock, NULL, MUTEX_DEFAULT, NULL);
93
94 dp->dp_vnrele_taskq = taskq_create("zfs_vn_rele_taskq", 1, minclsyspri,
95 1, 4, 0);
96
97 return (dp);
98}
99
100int
101dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp)
102{
103 int err;
104 dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
105 dsl_dir_t *dd;
106 dsl_dataset_t *ds;
107 objset_impl_t *osi;
108
109 rw_enter(&dp->dp_config_rwlock, RW_WRITER);
110 err = dmu_objset_open_impl(spa, NULL, &dp->dp_meta_rootbp, &osi);
111 if (err)
112 goto out;
113 dp->dp_meta_objset = &osi->os;
114
115 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
116 DMU_POOL_ROOT_DATASET, sizeof (uint64_t), 1,
117 &dp->dp_root_dir_obj);
118 if (err)
119 goto out;
120
121 err = dsl_dir_open_obj(dp, dp->dp_root_dir_obj,
122 NULL, dp, &dp->dp_root_dir);
123 if (err)
124 goto out;
125
126 err = dsl_pool_open_special_dir(dp, MOS_DIR_NAME, &dp->dp_mos_dir);
127 if (err)
128 goto out;
129
130 if (spa_version(spa) >= SPA_VERSION_ORIGIN) {
131 err = dsl_pool_open_special_dir(dp, ORIGIN_DIR_NAME, &dd);
132 if (err)
133 goto out;
134 err = dsl_dataset_hold_obj(dp, dd->dd_phys->dd_head_dataset_obj,
135 FTAG, &ds);
| 23 * Use is subject to license terms.
24 */
25
26#include <sys/dsl_pool.h>
27#include <sys/dsl_dataset.h>
28#include <sys/dsl_dir.h>
29#include <sys/dsl_synctask.h>
30#include <sys/dmu_tx.h>
31#include <sys/dmu_objset.h>
32#include <sys/arc.h>
33#include <sys/zap.h>
34#include <sys/zio.h>
35#include <sys/zfs_context.h>
36#include <sys/fs/zfs.h>
37#include <sys/zfs_znode.h>
38#include <sys/spa_impl.h>
39
40int zfs_no_write_throttle = 0;
41int zfs_write_limit_shift = 3; /* 1/8th of physical memory */
42int zfs_txg_synctime = 5; /* target secs to sync a txg */
43
44uint64_t zfs_write_limit_min = 32 << 20; /* min write limit is 32MB */
45uint64_t zfs_write_limit_max = 0; /* max data payload per txg */
46uint64_t zfs_write_limit_inflated = 0;
47uint64_t zfs_write_limit_override = 0;
48extern uint64_t zfs_write_limit_min;
49
50kmutex_t zfs_write_limit_lock;
51
52static pgcnt_t old_physmem = 0;
53
54static int
55dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **ddp)
56{
57 uint64_t obj;
58 int err;
59
60 err = zap_lookup(dp->dp_meta_objset,
61 dp->dp_root_dir->dd_phys->dd_child_dir_zapobj,
62 name, sizeof (obj), 1, &obj);
63 if (err)
64 return (err);
65
66 return (dsl_dir_open_obj(dp, obj, name, dp, ddp));
67}
68
69static dsl_pool_t *
70dsl_pool_open_impl(spa_t *spa, uint64_t txg)
71{
72 dsl_pool_t *dp;
73 blkptr_t *bp = spa_get_rootblkptr(spa);
74
75 dp = kmem_zalloc(sizeof (dsl_pool_t), KM_SLEEP);
76 dp->dp_spa = spa;
77 dp->dp_meta_rootbp = *bp;
78 rw_init(&dp->dp_config_rwlock, NULL, RW_DEFAULT, NULL);
79 dp->dp_write_limit = zfs_write_limit_min;
80 txg_init(dp, txg);
81
82 txg_list_create(&dp->dp_dirty_datasets,
83 offsetof(dsl_dataset_t, ds_dirty_link));
84 txg_list_create(&dp->dp_dirty_dirs,
85 offsetof(dsl_dir_t, dd_dirty_link));
86 txg_list_create(&dp->dp_sync_tasks,
87 offsetof(dsl_sync_task_group_t, dstg_node));
88 list_create(&dp->dp_synced_datasets, sizeof (dsl_dataset_t),
89 offsetof(dsl_dataset_t, ds_synced_link));
90
91 mutex_init(&dp->dp_lock, NULL, MUTEX_DEFAULT, NULL);
92 mutex_init(&dp->dp_scrub_cancel_lock, NULL, MUTEX_DEFAULT, NULL);
93
94 dp->dp_vnrele_taskq = taskq_create("zfs_vn_rele_taskq", 1, minclsyspri,
95 1, 4, 0);
96
97 return (dp);
98}
99
100int
101dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp)
102{
103 int err;
104 dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
105 dsl_dir_t *dd;
106 dsl_dataset_t *ds;
107 objset_impl_t *osi;
108
109 rw_enter(&dp->dp_config_rwlock, RW_WRITER);
110 err = dmu_objset_open_impl(spa, NULL, &dp->dp_meta_rootbp, &osi);
111 if (err)
112 goto out;
113 dp->dp_meta_objset = &osi->os;
114
115 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
116 DMU_POOL_ROOT_DATASET, sizeof (uint64_t), 1,
117 &dp->dp_root_dir_obj);
118 if (err)
119 goto out;
120
121 err = dsl_dir_open_obj(dp, dp->dp_root_dir_obj,
122 NULL, dp, &dp->dp_root_dir);
123 if (err)
124 goto out;
125
126 err = dsl_pool_open_special_dir(dp, MOS_DIR_NAME, &dp->dp_mos_dir);
127 if (err)
128 goto out;
129
130 if (spa_version(spa) >= SPA_VERSION_ORIGIN) {
131 err = dsl_pool_open_special_dir(dp, ORIGIN_DIR_NAME, &dd);
132 if (err)
133 goto out;
134 err = dsl_dataset_hold_obj(dp, dd->dd_phys->dd_head_dataset_obj,
135 FTAG, &ds);
|
| 136 if (err == 0) {
137 err = dsl_dataset_hold_obj(dp,
138 ds->ds_phys->ds_prev_snap_obj, dp,
139 &dp->dp_origin_snap);
140 dsl_dataset_rele(ds, FTAG);
141 }
142 dsl_dir_close(dd, dp);
|
136 if (err)
137 goto out;
| 143 if (err)
144 goto out;
|
138 err = dsl_dataset_hold_obj(dp, ds->ds_phys->ds_prev_snap_obj,
139 dp, &dp->dp_origin_snap);
140 if (err)
141 goto out;
142 dsl_dataset_rele(ds, FTAG);
143 dsl_dir_close(dd, dp);
| |
144 }
145
146 /* get scrub status */
147 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
148 DMU_POOL_SCRUB_FUNC, sizeof (uint32_t), 1,
149 &dp->dp_scrub_func);
150 if (err == 0) {
151 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
152 DMU_POOL_SCRUB_QUEUE, sizeof (uint64_t), 1,
153 &dp->dp_scrub_queue_obj);
154 if (err)
155 goto out;
156 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
157 DMU_POOL_SCRUB_MIN_TXG, sizeof (uint64_t), 1,
158 &dp->dp_scrub_min_txg);
159 if (err)
160 goto out;
161 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
162 DMU_POOL_SCRUB_MAX_TXG, sizeof (uint64_t), 1,
163 &dp->dp_scrub_max_txg);
164 if (err)
165 goto out;
166 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
167 DMU_POOL_SCRUB_BOOKMARK, sizeof (uint64_t), 4,
168 &dp->dp_scrub_bookmark);
169 if (err)
170 goto out;
171 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
172 DMU_POOL_SCRUB_ERRORS, sizeof (uint64_t), 1,
173 &spa->spa_scrub_errors);
174 if (err)
175 goto out;
176 if (spa_version(spa) < SPA_VERSION_DSL_SCRUB) {
177 /*
178 * A new-type scrub was in progress on an old
179 * pool. Restart from the beginning, since the
180 * old software may have changed the pool in the
181 * meantime.
182 */
183 dsl_pool_scrub_restart(dp);
184 }
185 } else {
186 /*
187 * It's OK if there is no scrub in progress (and if
188 * there was an I/O error, ignore it).
189 */
190 err = 0;
191 }
192
193out:
194 rw_exit(&dp->dp_config_rwlock);
195 if (err)
196 dsl_pool_close(dp);
197 else
198 *dpp = dp;
199
200 return (err);
201}
202
203void
204dsl_pool_close(dsl_pool_t *dp)
205{
206 /* drop our references from dsl_pool_open() */
207
208 /*
209 * Since we held the origin_snap from "syncing" context (which
210 * includes pool-opening context), it actually only got a "ref"
211 * and not a hold, so just drop that here.
212 */
213 if (dp->dp_origin_snap)
214 dsl_dataset_drop_ref(dp->dp_origin_snap, dp);
215 if (dp->dp_mos_dir)
216 dsl_dir_close(dp->dp_mos_dir, dp);
217 if (dp->dp_root_dir)
218 dsl_dir_close(dp->dp_root_dir, dp);
219
220 /* undo the dmu_objset_open_impl(mos) from dsl_pool_open() */
221 if (dp->dp_meta_objset)
222 dmu_objset_evict(NULL, dp->dp_meta_objset->os);
223
224 txg_list_destroy(&dp->dp_dirty_datasets);
225 txg_list_destroy(&dp->dp_dirty_dirs);
226 txg_list_destroy(&dp->dp_sync_tasks);
227 list_destroy(&dp->dp_synced_datasets);
228
229 arc_flush(dp->dp_spa);
230 txg_fini(dp);
231 rw_destroy(&dp->dp_config_rwlock);
232 mutex_destroy(&dp->dp_lock);
233 mutex_destroy(&dp->dp_scrub_cancel_lock);
234 taskq_destroy(dp->dp_vnrele_taskq);
235 if (dp->dp_blkstats)
236 kmem_free(dp->dp_blkstats, sizeof (zfs_all_blkstats_t));
237 kmem_free(dp, sizeof (dsl_pool_t));
238}
239
240dsl_pool_t *
241dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg)
242{
243 int err;
244 dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
245 dmu_tx_t *tx = dmu_tx_create_assigned(dp, txg);
246 objset_impl_t *osip;
247 dsl_dataset_t *ds;
248 uint64_t dsobj;
249
250 /* create and open the MOS (meta-objset) */
251 dp->dp_meta_objset = &dmu_objset_create_impl(spa,
252 NULL, &dp->dp_meta_rootbp, DMU_OST_META, tx)->os;
253
254 /* create the pool directory */
255 err = zap_create_claim(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
256 DMU_OT_OBJECT_DIRECTORY, DMU_OT_NONE, 0, tx);
257 ASSERT3U(err, ==, 0);
258
259 /* create and open the root dir */
260 dp->dp_root_dir_obj = dsl_dir_create_sync(dp, NULL, NULL, tx);
261 VERIFY(0 == dsl_dir_open_obj(dp, dp->dp_root_dir_obj,
262 NULL, dp, &dp->dp_root_dir));
263
264 /* create and open the meta-objset dir */
265 (void) dsl_dir_create_sync(dp, dp->dp_root_dir, MOS_DIR_NAME, tx);
266 VERIFY(0 == dsl_pool_open_special_dir(dp,
267 MOS_DIR_NAME, &dp->dp_mos_dir));
268
269 if (spa_version(spa) >= SPA_VERSION_DSL_SCRUB)
270 dsl_pool_create_origin(dp, tx);
271
272 /* create the root dataset */
273 dsobj = dsl_dataset_create_sync_dd(dp->dp_root_dir, NULL, 0, tx);
274
275 /* create the root objset */
276 VERIFY(0 == dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds));
277 osip = dmu_objset_create_impl(dp->dp_spa, ds,
278 dsl_dataset_get_blkptr(ds), DMU_OST_ZFS, tx);
279#ifdef _KERNEL
280 zfs_create_fs(&osip->os, kcred, zplprops, tx);
281#endif
282 dsl_dataset_rele(ds, FTAG);
283
284 dmu_tx_commit(tx);
285
286 return (dp);
287}
288
289void
290dsl_pool_sync(dsl_pool_t *dp, uint64_t txg)
291{
292 zio_t *zio;
293 dmu_tx_t *tx;
294 dsl_dir_t *dd;
295 dsl_dataset_t *ds;
296 dsl_sync_task_group_t *dstg;
297 objset_impl_t *mosi = dp->dp_meta_objset->os;
298 hrtime_t start, write_time;
299 uint64_t data_written;
300 int err;
301
302 tx = dmu_tx_create_assigned(dp, txg);
303
304 dp->dp_read_overhead = 0;
305 start = gethrtime();
| 145 }
146
147 /* get scrub status */
148 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
149 DMU_POOL_SCRUB_FUNC, sizeof (uint32_t), 1,
150 &dp->dp_scrub_func);
151 if (err == 0) {
152 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
153 DMU_POOL_SCRUB_QUEUE, sizeof (uint64_t), 1,
154 &dp->dp_scrub_queue_obj);
155 if (err)
156 goto out;
157 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
158 DMU_POOL_SCRUB_MIN_TXG, sizeof (uint64_t), 1,
159 &dp->dp_scrub_min_txg);
160 if (err)
161 goto out;
162 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
163 DMU_POOL_SCRUB_MAX_TXG, sizeof (uint64_t), 1,
164 &dp->dp_scrub_max_txg);
165 if (err)
166 goto out;
167 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
168 DMU_POOL_SCRUB_BOOKMARK, sizeof (uint64_t), 4,
169 &dp->dp_scrub_bookmark);
170 if (err)
171 goto out;
172 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
173 DMU_POOL_SCRUB_ERRORS, sizeof (uint64_t), 1,
174 &spa->spa_scrub_errors);
175 if (err)
176 goto out;
177 if (spa_version(spa) < SPA_VERSION_DSL_SCRUB) {
178 /*
179 * A new-type scrub was in progress on an old
180 * pool. Restart from the beginning, since the
181 * old software may have changed the pool in the
182 * meantime.
183 */
184 dsl_pool_scrub_restart(dp);
185 }
186 } else {
187 /*
188 * It's OK if there is no scrub in progress (and if
189 * there was an I/O error, ignore it).
190 */
191 err = 0;
192 }
193
194out:
195 rw_exit(&dp->dp_config_rwlock);
196 if (err)
197 dsl_pool_close(dp);
198 else
199 *dpp = dp;
200
201 return (err);
202}
203
204void
205dsl_pool_close(dsl_pool_t *dp)
206{
207 /* drop our references from dsl_pool_open() */
208
209 /*
210 * Since we held the origin_snap from "syncing" context (which
211 * includes pool-opening context), it actually only got a "ref"
212 * and not a hold, so just drop that here.
213 */
214 if (dp->dp_origin_snap)
215 dsl_dataset_drop_ref(dp->dp_origin_snap, dp);
216 if (dp->dp_mos_dir)
217 dsl_dir_close(dp->dp_mos_dir, dp);
218 if (dp->dp_root_dir)
219 dsl_dir_close(dp->dp_root_dir, dp);
220
221 /* undo the dmu_objset_open_impl(mos) from dsl_pool_open() */
222 if (dp->dp_meta_objset)
223 dmu_objset_evict(NULL, dp->dp_meta_objset->os);
224
225 txg_list_destroy(&dp->dp_dirty_datasets);
226 txg_list_destroy(&dp->dp_dirty_dirs);
227 txg_list_destroy(&dp->dp_sync_tasks);
228 list_destroy(&dp->dp_synced_datasets);
229
230 arc_flush(dp->dp_spa);
231 txg_fini(dp);
232 rw_destroy(&dp->dp_config_rwlock);
233 mutex_destroy(&dp->dp_lock);
234 mutex_destroy(&dp->dp_scrub_cancel_lock);
235 taskq_destroy(dp->dp_vnrele_taskq);
236 if (dp->dp_blkstats)
237 kmem_free(dp->dp_blkstats, sizeof (zfs_all_blkstats_t));
238 kmem_free(dp, sizeof (dsl_pool_t));
239}
240
241dsl_pool_t *
242dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg)
243{
244 int err;
245 dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
246 dmu_tx_t *tx = dmu_tx_create_assigned(dp, txg);
247 objset_impl_t *osip;
248 dsl_dataset_t *ds;
249 uint64_t dsobj;
250
251 /* create and open the MOS (meta-objset) */
252 dp->dp_meta_objset = &dmu_objset_create_impl(spa,
253 NULL, &dp->dp_meta_rootbp, DMU_OST_META, tx)->os;
254
255 /* create the pool directory */
256 err = zap_create_claim(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
257 DMU_OT_OBJECT_DIRECTORY, DMU_OT_NONE, 0, tx);
258 ASSERT3U(err, ==, 0);
259
260 /* create and open the root dir */
261 dp->dp_root_dir_obj = dsl_dir_create_sync(dp, NULL, NULL, tx);
262 VERIFY(0 == dsl_dir_open_obj(dp, dp->dp_root_dir_obj,
263 NULL, dp, &dp->dp_root_dir));
264
265 /* create and open the meta-objset dir */
266 (void) dsl_dir_create_sync(dp, dp->dp_root_dir, MOS_DIR_NAME, tx);
267 VERIFY(0 == dsl_pool_open_special_dir(dp,
268 MOS_DIR_NAME, &dp->dp_mos_dir));
269
270 if (spa_version(spa) >= SPA_VERSION_DSL_SCRUB)
271 dsl_pool_create_origin(dp, tx);
272
273 /* create the root dataset */
274 dsobj = dsl_dataset_create_sync_dd(dp->dp_root_dir, NULL, 0, tx);
275
276 /* create the root objset */
277 VERIFY(0 == dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds));
278 osip = dmu_objset_create_impl(dp->dp_spa, ds,
279 dsl_dataset_get_blkptr(ds), DMU_OST_ZFS, tx);
280#ifdef _KERNEL
281 zfs_create_fs(&osip->os, kcred, zplprops, tx);
282#endif
283 dsl_dataset_rele(ds, FTAG);
284
285 dmu_tx_commit(tx);
286
287 return (dp);
288}
289
290void
291dsl_pool_sync(dsl_pool_t *dp, uint64_t txg)
292{
293 zio_t *zio;
294 dmu_tx_t *tx;
295 dsl_dir_t *dd;
296 dsl_dataset_t *ds;
297 dsl_sync_task_group_t *dstg;
298 objset_impl_t *mosi = dp->dp_meta_objset->os;
299 hrtime_t start, write_time;
300 uint64_t data_written;
301 int err;
302
303 tx = dmu_tx_create_assigned(dp, txg);
304
305 dp->dp_read_overhead = 0;
306 start = gethrtime();
|
| 307
|
306 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
307 while (ds = txg_list_remove(&dp->dp_dirty_datasets, txg)) {
| 308 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
309 while (ds = txg_list_remove(&dp->dp_dirty_datasets, txg)) {
|
308 if (!list_link_active(&ds->ds_synced_link))
309 list_insert_tail(&dp->dp_synced_datasets, ds);
310 else
311 dmu_buf_rele(ds->ds_dbuf, ds);
| 310 /*
311 * We must not sync any non-MOS datasets twice, because
312 * we may have taken a snapshot of them. However, we
313 * may sync newly-created datasets on pass 2.
314 */
315 ASSERT(!list_link_active(&ds->ds_synced_link));
316 list_insert_tail(&dp->dp_synced_datasets, ds);
|
312 dsl_dataset_sync(ds, zio, tx);
313 }
314 DTRACE_PROBE(pool_sync__1setup);
| 317 dsl_dataset_sync(ds, zio, tx);
318 }
319 DTRACE_PROBE(pool_sync__1setup);
|
315
| |
316 err = zio_wait(zio);
| 320 err = zio_wait(zio);
|
| 321
|
317 write_time = gethrtime() - start;
318 ASSERT(err == 0);
319 DTRACE_PROBE(pool_sync__2rootzio);
320
| 322 write_time = gethrtime() - start;
323 ASSERT(err == 0);
324 DTRACE_PROBE(pool_sync__2rootzio);
325
|
321 while (dstg = txg_list_remove(&dp->dp_sync_tasks, txg))
| 326 for (ds = list_head(&dp->dp_synced_datasets); ds;
327 ds = list_next(&dp->dp_synced_datasets, ds))
328 dmu_objset_do_userquota_callbacks(ds->ds_user_ptr, tx);
329
330 /*
331 * Sync the datasets again to push out the changes due to
332 * userquota updates. This must be done before we process the
333 * sync tasks, because that could cause a snapshot of a dataset
334 * whose ds_bp will be rewritten when we do this 2nd sync.
335 */
336 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
337 while (ds = txg_list_remove(&dp->dp_dirty_datasets, txg)) {
338 ASSERT(list_link_active(&ds->ds_synced_link));
339 dmu_buf_rele(ds->ds_dbuf, ds);
340 dsl_dataset_sync(ds, zio, tx);
341 }
342 err = zio_wait(zio);
343
344 while (dstg = txg_list_remove(&dp->dp_sync_tasks, txg)) {
345 /*
346 * No more sync tasks should have been added while we
347 * were syncing.
348 */
349 ASSERT(spa_sync_pass(dp->dp_spa) == 1);
|
322 dsl_sync_task_group_sync(dstg, tx);
| 350 dsl_sync_task_group_sync(dstg, tx);
|
| 351 }
|
323 DTRACE_PROBE(pool_sync__3task);
324
325 start = gethrtime();
326 while (dd = txg_list_remove(&dp->dp_dirty_dirs, txg))
327 dsl_dir_sync(dd, tx);
328 write_time += gethrtime() - start;
329
330 if (spa_sync_pass(dp->dp_spa) == 1)
331 dsl_pool_scrub_sync(dp, tx);
332
333 start = gethrtime();
334 if (list_head(&mosi->os_dirty_dnodes[txg & TXG_MASK]) != NULL ||
335 list_head(&mosi->os_free_dnodes[txg & TXG_MASK]) != NULL) {
336 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
337 dmu_objset_sync(mosi, zio, tx);
338 err = zio_wait(zio);
339 ASSERT(err == 0);
340 dprintf_bp(&dp->dp_meta_rootbp, "meta objset rootbp is %s", "");
341 spa_set_rootblkptr(dp->dp_spa, &dp->dp_meta_rootbp);
342 }
343 write_time += gethrtime() - start;
344 DTRACE_PROBE2(pool_sync__4io, hrtime_t, write_time,
345 hrtime_t, dp->dp_read_overhead);
346 write_time -= dp->dp_read_overhead;
347
348 dmu_tx_commit(tx);
349
350 data_written = dp->dp_space_towrite[txg & TXG_MASK];
351 dp->dp_space_towrite[txg & TXG_MASK] = 0;
352 ASSERT(dp->dp_tempreserved[txg & TXG_MASK] == 0);
353
354 /*
355 * If the write limit max has not been explicitly set, set it
356 * to a fraction of available physical memory (default 1/8th).
357 * Note that we must inflate the limit because the spa
358 * inflates write sizes to account for data replication.
359 * Check this each sync phase to catch changing memory size.
360 */
361 if (physmem != old_physmem && zfs_write_limit_shift) {
362 mutex_enter(&zfs_write_limit_lock);
363 old_physmem = physmem;
364 zfs_write_limit_max = ptob(physmem) >> zfs_write_limit_shift;
365 zfs_write_limit_inflated = MAX(zfs_write_limit_min,
366 spa_get_asize(dp->dp_spa, zfs_write_limit_max));
367 mutex_exit(&zfs_write_limit_lock);
368 }
369
370 /*
371 * Attempt to keep the sync time consistent by adjusting the
372 * amount of write traffic allowed into each transaction group.
373 * Weight the throughput calculation towards the current value:
374 * thru = 3/4 old_thru + 1/4 new_thru
375 */
376 ASSERT(zfs_write_limit_min > 0);
377 if (data_written > zfs_write_limit_min / 8 && write_time > 0) {
378 uint64_t throughput = (data_written * NANOSEC) / write_time;
379 if (dp->dp_throughput)
380 dp->dp_throughput = throughput / 4 +
381 3 * dp->dp_throughput / 4;
382 else
383 dp->dp_throughput = throughput;
384 dp->dp_write_limit = MIN(zfs_write_limit_inflated,
385 MAX(zfs_write_limit_min,
386 dp->dp_throughput * zfs_txg_synctime));
387 }
388}
389
390void
391dsl_pool_zil_clean(dsl_pool_t *dp)
392{
393 dsl_dataset_t *ds;
394
395 while (ds = list_head(&dp->dp_synced_datasets)) {
396 list_remove(&dp->dp_synced_datasets, ds);
397 ASSERT(ds->ds_user_ptr != NULL);
398 zil_clean(((objset_impl_t *)ds->ds_user_ptr)->os_zil);
399 dmu_buf_rele(ds->ds_dbuf, ds);
400 }
401}
402
403/*
404 * TRUE if the current thread is the tx_sync_thread or if we
405 * are being called from SPA context during pool initialization.
406 */
407int
408dsl_pool_sync_context(dsl_pool_t *dp)
409{
410 return (curthread == dp->dp_tx.tx_sync_thread ||
411 spa_get_dsl(dp->dp_spa) == NULL);
412}
413
414uint64_t
415dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree)
416{
417 uint64_t space, resv;
418
419 /*
420 * Reserve about 1.6% (1/64), or at least 32MB, for allocation
421 * efficiency.
422 * XXX The intent log is not accounted for, so it must fit
423 * within this slop.
424 *
425 * If we're trying to assess whether it's OK to do a free,
426 * cut the reservation in half to allow forward progress
427 * (e.g. make it possible to rm(1) files from a full pool).
428 */
429 space = spa_get_dspace(dp->dp_spa);
430 resv = MAX(space >> 6, SPA_MINDEVSIZE >> 1);
431 if (netfree)
432 resv >>= 1;
433
434 return (space - resv);
435}
436
437int
438dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx)
439{
440 uint64_t reserved = 0;
441 uint64_t write_limit = (zfs_write_limit_override ?
442 zfs_write_limit_override : dp->dp_write_limit);
443
444 if (zfs_no_write_throttle) {
445 atomic_add_64(&dp->dp_tempreserved[tx->tx_txg & TXG_MASK],
446 space);
447 return (0);
448 }
449
450 /*
451 * Check to see if we have exceeded the maximum allowed IO for
452 * this transaction group. We can do this without locks since
453 * a little slop here is ok. Note that we do the reserved check
454 * with only half the requested reserve: this is because the
455 * reserve requests are worst-case, and we really don't want to
456 * throttle based off of worst-case estimates.
457 */
458 if (write_limit > 0) {
459 reserved = dp->dp_space_towrite[tx->tx_txg & TXG_MASK]
460 + dp->dp_tempreserved[tx->tx_txg & TXG_MASK] / 2;
461
462 if (reserved && reserved > write_limit)
463 return (ERESTART);
464 }
465
466 atomic_add_64(&dp->dp_tempreserved[tx->tx_txg & TXG_MASK], space);
467
468 /*
469 * If this transaction group is over 7/8ths capacity, delay
470 * the caller 1 clock tick. This will slow down the "fill"
471 * rate until the sync process can catch up with us.
472 */
473 if (reserved && reserved > (write_limit - (write_limit >> 3)))
474 txg_delay(dp, tx->tx_txg, 1);
475
476 return (0);
477}
478
479void
480dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx)
481{
482 ASSERT(dp->dp_tempreserved[tx->tx_txg & TXG_MASK] >= space);
483 atomic_add_64(&dp->dp_tempreserved[tx->tx_txg & TXG_MASK], -space);
484}
485
486void
487dsl_pool_memory_pressure(dsl_pool_t *dp)
488{
489 uint64_t space_inuse = 0;
490 int i;
491
492 if (dp->dp_write_limit == zfs_write_limit_min)
493 return;
494
495 for (i = 0; i < TXG_SIZE; i++) {
496 space_inuse += dp->dp_space_towrite[i];
497 space_inuse += dp->dp_tempreserved[i];
498 }
499 dp->dp_write_limit = MAX(zfs_write_limit_min,
500 MIN(dp->dp_write_limit, space_inuse / 4));
501}
502
503void
504dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx)
505{
506 if (space > 0) {
507 mutex_enter(&dp->dp_lock);
508 dp->dp_space_towrite[tx->tx_txg & TXG_MASK] += space;
509 mutex_exit(&dp->dp_lock);
510 }
511}
512
513/* ARGSUSED */
514static int
515upgrade_clones_cb(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg)
516{
517 dmu_tx_t *tx = arg;
518 dsl_dataset_t *ds, *prev = NULL;
519 int err;
520 dsl_pool_t *dp = spa_get_dsl(spa);
521
522 err = dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds);
523 if (err)
524 return (err);
525
526 while (ds->ds_phys->ds_prev_snap_obj != 0) {
527 err = dsl_dataset_hold_obj(dp, ds->ds_phys->ds_prev_snap_obj,
528 FTAG, &prev);
529 if (err) {
530 dsl_dataset_rele(ds, FTAG);
531 return (err);
532 }
533
534 if (prev->ds_phys->ds_next_snap_obj != ds->ds_object)
535 break;
536 dsl_dataset_rele(ds, FTAG);
537 ds = prev;
538 prev = NULL;
539 }
540
541 if (prev == NULL) {
542 prev = dp->dp_origin_snap;
543
544 /*
545 * The $ORIGIN can't have any data, or the accounting
546 * will be wrong.
547 */
548 ASSERT(prev->ds_phys->ds_bp.blk_birth == 0);
549
550 /* The origin doesn't get attached to itself */
551 if (ds->ds_object == prev->ds_object) {
552 dsl_dataset_rele(ds, FTAG);
553 return (0);
554 }
555
556 dmu_buf_will_dirty(ds->ds_dbuf, tx);
557 ds->ds_phys->ds_prev_snap_obj = prev->ds_object;
558 ds->ds_phys->ds_prev_snap_txg = prev->ds_phys->ds_creation_txg;
559
560 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
561 ds->ds_dir->dd_phys->dd_origin_obj = prev->ds_object;
562
563 dmu_buf_will_dirty(prev->ds_dbuf, tx);
564 prev->ds_phys->ds_num_children++;
565
566 if (ds->ds_phys->ds_next_snap_obj == 0) {
567 ASSERT(ds->ds_prev == NULL);
568 VERIFY(0 == dsl_dataset_hold_obj(dp,
569 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev));
570 }
571 }
572
573 ASSERT(ds->ds_dir->dd_phys->dd_origin_obj == prev->ds_object);
574 ASSERT(ds->ds_phys->ds_prev_snap_obj == prev->ds_object);
575
576 if (prev->ds_phys->ds_next_clones_obj == 0) {
| 352 DTRACE_PROBE(pool_sync__3task);
353
354 start = gethrtime();
355 while (dd = txg_list_remove(&dp->dp_dirty_dirs, txg))
356 dsl_dir_sync(dd, tx);
357 write_time += gethrtime() - start;
358
359 if (spa_sync_pass(dp->dp_spa) == 1)
360 dsl_pool_scrub_sync(dp, tx);
361
362 start = gethrtime();
363 if (list_head(&mosi->os_dirty_dnodes[txg & TXG_MASK]) != NULL ||
364 list_head(&mosi->os_free_dnodes[txg & TXG_MASK]) != NULL) {
365 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
366 dmu_objset_sync(mosi, zio, tx);
367 err = zio_wait(zio);
368 ASSERT(err == 0);
369 dprintf_bp(&dp->dp_meta_rootbp, "meta objset rootbp is %s", "");
370 spa_set_rootblkptr(dp->dp_spa, &dp->dp_meta_rootbp);
371 }
372 write_time += gethrtime() - start;
373 DTRACE_PROBE2(pool_sync__4io, hrtime_t, write_time,
374 hrtime_t, dp->dp_read_overhead);
375 write_time -= dp->dp_read_overhead;
376
377 dmu_tx_commit(tx);
378
379 data_written = dp->dp_space_towrite[txg & TXG_MASK];
380 dp->dp_space_towrite[txg & TXG_MASK] = 0;
381 ASSERT(dp->dp_tempreserved[txg & TXG_MASK] == 0);
382
383 /*
384 * If the write limit max has not been explicitly set, set it
385 * to a fraction of available physical memory (default 1/8th).
386 * Note that we must inflate the limit because the spa
387 * inflates write sizes to account for data replication.
388 * Check this each sync phase to catch changing memory size.
389 */
390 if (physmem != old_physmem && zfs_write_limit_shift) {
391 mutex_enter(&zfs_write_limit_lock);
392 old_physmem = physmem;
393 zfs_write_limit_max = ptob(physmem) >> zfs_write_limit_shift;
394 zfs_write_limit_inflated = MAX(zfs_write_limit_min,
395 spa_get_asize(dp->dp_spa, zfs_write_limit_max));
396 mutex_exit(&zfs_write_limit_lock);
397 }
398
399 /*
400 * Attempt to keep the sync time consistent by adjusting the
401 * amount of write traffic allowed into each transaction group.
402 * Weight the throughput calculation towards the current value:
403 * thru = 3/4 old_thru + 1/4 new_thru
404 */
405 ASSERT(zfs_write_limit_min > 0);
406 if (data_written > zfs_write_limit_min / 8 && write_time > 0) {
407 uint64_t throughput = (data_written * NANOSEC) / write_time;
408 if (dp->dp_throughput)
409 dp->dp_throughput = throughput / 4 +
410 3 * dp->dp_throughput / 4;
411 else
412 dp->dp_throughput = throughput;
413 dp->dp_write_limit = MIN(zfs_write_limit_inflated,
414 MAX(zfs_write_limit_min,
415 dp->dp_throughput * zfs_txg_synctime));
416 }
417}
418
419void
420dsl_pool_zil_clean(dsl_pool_t *dp)
421{
422 dsl_dataset_t *ds;
423
424 while (ds = list_head(&dp->dp_synced_datasets)) {
425 list_remove(&dp->dp_synced_datasets, ds);
426 ASSERT(ds->ds_user_ptr != NULL);
427 zil_clean(((objset_impl_t *)ds->ds_user_ptr)->os_zil);
428 dmu_buf_rele(ds->ds_dbuf, ds);
429 }
430}
431
432/*
433 * TRUE if the current thread is the tx_sync_thread or if we
434 * are being called from SPA context during pool initialization.
435 */
436int
437dsl_pool_sync_context(dsl_pool_t *dp)
438{
439 return (curthread == dp->dp_tx.tx_sync_thread ||
440 spa_get_dsl(dp->dp_spa) == NULL);
441}
442
443uint64_t
444dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree)
445{
446 uint64_t space, resv;
447
448 /*
449 * Reserve about 1.6% (1/64), or at least 32MB, for allocation
450 * efficiency.
451 * XXX The intent log is not accounted for, so it must fit
452 * within this slop.
453 *
454 * If we're trying to assess whether it's OK to do a free,
455 * cut the reservation in half to allow forward progress
456 * (e.g. make it possible to rm(1) files from a full pool).
457 */
458 space = spa_get_dspace(dp->dp_spa);
459 resv = MAX(space >> 6, SPA_MINDEVSIZE >> 1);
460 if (netfree)
461 resv >>= 1;
462
463 return (space - resv);
464}
465
466int
467dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx)
468{
469 uint64_t reserved = 0;
470 uint64_t write_limit = (zfs_write_limit_override ?
471 zfs_write_limit_override : dp->dp_write_limit);
472
473 if (zfs_no_write_throttle) {
474 atomic_add_64(&dp->dp_tempreserved[tx->tx_txg & TXG_MASK],
475 space);
476 return (0);
477 }
478
479 /*
480 * Check to see if we have exceeded the maximum allowed IO for
481 * this transaction group. We can do this without locks since
482 * a little slop here is ok. Note that we do the reserved check
483 * with only half the requested reserve: this is because the
484 * reserve requests are worst-case, and we really don't want to
485 * throttle based off of worst-case estimates.
486 */
487 if (write_limit > 0) {
488 reserved = dp->dp_space_towrite[tx->tx_txg & TXG_MASK]
489 + dp->dp_tempreserved[tx->tx_txg & TXG_MASK] / 2;
490
491 if (reserved && reserved > write_limit)
492 return (ERESTART);
493 }
494
495 atomic_add_64(&dp->dp_tempreserved[tx->tx_txg & TXG_MASK], space);
496
497 /*
498 * If this transaction group is over 7/8ths capacity, delay
499 * the caller 1 clock tick. This will slow down the "fill"
500 * rate until the sync process can catch up with us.
501 */
502 if (reserved && reserved > (write_limit - (write_limit >> 3)))
503 txg_delay(dp, tx->tx_txg, 1);
504
505 return (0);
506}
507
508void
509dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx)
510{
511 ASSERT(dp->dp_tempreserved[tx->tx_txg & TXG_MASK] >= space);
512 atomic_add_64(&dp->dp_tempreserved[tx->tx_txg & TXG_MASK], -space);
513}
514
515void
516dsl_pool_memory_pressure(dsl_pool_t *dp)
517{
518 uint64_t space_inuse = 0;
519 int i;
520
521 if (dp->dp_write_limit == zfs_write_limit_min)
522 return;
523
524 for (i = 0; i < TXG_SIZE; i++) {
525 space_inuse += dp->dp_space_towrite[i];
526 space_inuse += dp->dp_tempreserved[i];
527 }
528 dp->dp_write_limit = MAX(zfs_write_limit_min,
529 MIN(dp->dp_write_limit, space_inuse / 4));
530}
531
532void
533dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx)
534{
535 if (space > 0) {
536 mutex_enter(&dp->dp_lock);
537 dp->dp_space_towrite[tx->tx_txg & TXG_MASK] += space;
538 mutex_exit(&dp->dp_lock);
539 }
540}
541
542/* ARGSUSED */
543static int
544upgrade_clones_cb(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg)
545{
546 dmu_tx_t *tx = arg;
547 dsl_dataset_t *ds, *prev = NULL;
548 int err;
549 dsl_pool_t *dp = spa_get_dsl(spa);
550
551 err = dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds);
552 if (err)
553 return (err);
554
555 while (ds->ds_phys->ds_prev_snap_obj != 0) {
556 err = dsl_dataset_hold_obj(dp, ds->ds_phys->ds_prev_snap_obj,
557 FTAG, &prev);
558 if (err) {
559 dsl_dataset_rele(ds, FTAG);
560 return (err);
561 }
562
563 if (prev->ds_phys->ds_next_snap_obj != ds->ds_object)
564 break;
565 dsl_dataset_rele(ds, FTAG);
566 ds = prev;
567 prev = NULL;
568 }
569
570 if (prev == NULL) {
571 prev = dp->dp_origin_snap;
572
573 /*
574 * The $ORIGIN can't have any data, or the accounting
575 * will be wrong.
576 */
577 ASSERT(prev->ds_phys->ds_bp.blk_birth == 0);
578
579 /* The origin doesn't get attached to itself */
580 if (ds->ds_object == prev->ds_object) {
581 dsl_dataset_rele(ds, FTAG);
582 return (0);
583 }
584
585 dmu_buf_will_dirty(ds->ds_dbuf, tx);
586 ds->ds_phys->ds_prev_snap_obj = prev->ds_object;
587 ds->ds_phys->ds_prev_snap_txg = prev->ds_phys->ds_creation_txg;
588
589 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
590 ds->ds_dir->dd_phys->dd_origin_obj = prev->ds_object;
591
592 dmu_buf_will_dirty(prev->ds_dbuf, tx);
593 prev->ds_phys->ds_num_children++;
594
595 if (ds->ds_phys->ds_next_snap_obj == 0) {
596 ASSERT(ds->ds_prev == NULL);
597 VERIFY(0 == dsl_dataset_hold_obj(dp,
598 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev));
599 }
600 }
601
602 ASSERT(ds->ds_dir->dd_phys->dd_origin_obj == prev->ds_object);
603 ASSERT(ds->ds_phys->ds_prev_snap_obj == prev->ds_object);
604
605 if (prev->ds_phys->ds_next_clones_obj == 0) {
|
| 606 dmu_buf_will_dirty(prev->ds_dbuf, tx);
|
577 prev->ds_phys->ds_next_clones_obj =
578 zap_create(dp->dp_meta_objset,
579 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx);
580 }
581 VERIFY(0 == zap_add_int(dp->dp_meta_objset,
582 prev->ds_phys->ds_next_clones_obj, ds->ds_object, tx));
583
584 dsl_dataset_rele(ds, FTAG);
585 if (prev != dp->dp_origin_snap)
586 dsl_dataset_rele(prev, FTAG);
587 return (0);
588}
589
590void
591dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx)
592{
593 ASSERT(dmu_tx_is_syncing(tx));
594 ASSERT(dp->dp_origin_snap != NULL);
595
| 607 prev->ds_phys->ds_next_clones_obj =
608 zap_create(dp->dp_meta_objset,
609 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx);
610 }
611 VERIFY(0 == zap_add_int(dp->dp_meta_objset,
612 prev->ds_phys->ds_next_clones_obj, ds->ds_object, tx));
613
614 dsl_dataset_rele(ds, FTAG);
615 if (prev != dp->dp_origin_snap)
616 dsl_dataset_rele(prev, FTAG);
617 return (0);
618}
619
620void
621dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx)
622{
623 ASSERT(dmu_tx_is_syncing(tx));
624 ASSERT(dp->dp_origin_snap != NULL);
625
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596 (void) dmu_objset_find_spa(dp->dp_spa, NULL, upgrade_clones_cb,
597 tx, DS_FIND_CHILDREN);
| 626 VERIFY3U(0, ==, dmu_objset_find_spa(dp->dp_spa, NULL, upgrade_clones_cb,
627 tx, DS_FIND_CHILDREN));
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598}
599
600void
601dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx)
602{
603 uint64_t dsobj;
604 dsl_dataset_t *ds;
605
606 ASSERT(dmu_tx_is_syncing(tx));
607 ASSERT(dp->dp_origin_snap == NULL);
608
609 /* create the origin dir, ds, & snap-ds */
610 rw_enter(&dp->dp_config_rwlock, RW_WRITER);
611 dsobj = dsl_dataset_create_sync(dp->dp_root_dir, ORIGIN_DIR_NAME,
612 NULL, 0, kcred, tx);
613 VERIFY(0 == dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds));
614 dsl_dataset_snapshot_sync(ds, ORIGIN_DIR_NAME, kcred, tx);
615 VERIFY(0 == dsl_dataset_hold_obj(dp, ds->ds_phys->ds_prev_snap_obj,
616 dp, &dp->dp_origin_snap));
617 dsl_dataset_rele(ds, FTAG);
618 rw_exit(&dp->dp_config_rwlock);
619}
620
621taskq_t *
622dsl_pool_vnrele_taskq(dsl_pool_t *dp)
623{
624 return (dp->dp_vnrele_taskq);
625}
| 628}
629
630void
631dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx)
632{
633 uint64_t dsobj;
634 dsl_dataset_t *ds;
635
636 ASSERT(dmu_tx_is_syncing(tx));
637 ASSERT(dp->dp_origin_snap == NULL);
638
639 /* create the origin dir, ds, & snap-ds */
640 rw_enter(&dp->dp_config_rwlock, RW_WRITER);
641 dsobj = dsl_dataset_create_sync(dp->dp_root_dir, ORIGIN_DIR_NAME,
642 NULL, 0, kcred, tx);
643 VERIFY(0 == dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds));
644 dsl_dataset_snapshot_sync(ds, ORIGIN_DIR_NAME, kcred, tx);
645 VERIFY(0 == dsl_dataset_hold_obj(dp, ds->ds_phys->ds_prev_snap_obj,
646 dp, &dp->dp_origin_snap));
647 dsl_dataset_rele(ds, FTAG);
648 rw_exit(&dp->dp_config_rwlock);
649}
650
651taskq_t *
652dsl_pool_vnrele_taskq(dsl_pool_t *dp)
653{
654 return (dp->dp_vnrele_taskq);
655}
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