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spa_misc.c (228103) spa_misc.c (236884)
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

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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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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

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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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011 by Delphix. All rights reserved.
23 * Copyright (c) 2012 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 */
26
27#include <sys/zfs_context.h>
28#include <sys/spa_impl.h>
29#include <sys/zio.h>
30#include <sys/zio_checksum.h>
31#include <sys/zio_compress.h>

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43#include <sys/dsl_dir.h>
44#include <sys/dsl_prop.h>
45#include <sys/dsl_scan.h>
46#include <sys/fs/zfs.h>
47#include <sys/metaslab_impl.h>
48#include <sys/arc.h>
49#include <sys/ddt.h>
50#include "zfs_prop.h"
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 */
26
27#include <sys/zfs_context.h>
28#include <sys/spa_impl.h>
29#include <sys/zio.h>
30#include <sys/zio_checksum.h>
31#include <sys/zio_compress.h>

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43#include <sys/dsl_dir.h>
44#include <sys/dsl_prop.h>
45#include <sys/dsl_scan.h>
46#include <sys/fs/zfs.h>
47#include <sys/metaslab_impl.h>
48#include <sys/arc.h>
49#include <sys/ddt.h>
50#include "zfs_prop.h"
51#include "zfeature_common.h"
51
52/*
53 * SPA locking
54 *
55 * There are four basic locks for managing spa_t structures:
56 *
57 * spa_namespace_lock (global mutex)
58 *

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211 * spa_vdev_exit() Release the config lock, wait for all I/O
212 * to complete, sync the updated configs to the
213 * cache, and release the namespace lock.
214 *
215 * vdev state is protected by spa_vdev_state_enter() / spa_vdev_state_exit().
216 * Like spa_vdev_enter/exit, these are convenience wrappers -- the actual
217 * locking is, always, based on spa_namespace_lock and spa_config_lock[].
218 *
52
53/*
54 * SPA locking
55 *
56 * There are four basic locks for managing spa_t structures:
57 *
58 * spa_namespace_lock (global mutex)
59 *

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212 * spa_vdev_exit() Release the config lock, wait for all I/O
213 * to complete, sync the updated configs to the
214 * cache, and release the namespace lock.
215 *
216 * vdev state is protected by spa_vdev_state_enter() / spa_vdev_state_exit().
217 * Like spa_vdev_enter/exit, these are convenience wrappers -- the actual
218 * locking is, always, based on spa_namespace_lock and spa_config_lock[].
219 *
219 * spa_rename() is also implemented within this file since is requires
220 * spa_rename() is also implemented within this file since it requires
220 * manipulation of the namespace.
221 */
222
223static avl_tree_t spa_namespace_avl;
224kmutex_t spa_namespace_lock;
225static kcondvar_t spa_namespace_cv;
226static int spa_active_count;
227int spa_max_replication_override = SPA_DVAS_PER_BP;

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482
483 dp = kmem_zalloc(sizeof (spa_config_dirent_t), KM_SLEEP);
484 dp->scd_path = altroot ? NULL : spa_strdup(spa_config_path);
485 list_insert_head(&spa->spa_config_list, dp);
486
487 VERIFY(nvlist_alloc(&spa->spa_load_info, NV_UNIQUE_NAME,
488 KM_SLEEP) == 0);
489
221 * manipulation of the namespace.
222 */
223
224static avl_tree_t spa_namespace_avl;
225kmutex_t spa_namespace_lock;
226static kcondvar_t spa_namespace_cv;
227static int spa_active_count;
228int spa_max_replication_override = SPA_DVAS_PER_BP;

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483
484 dp = kmem_zalloc(sizeof (spa_config_dirent_t), KM_SLEEP);
485 dp->scd_path = altroot ? NULL : spa_strdup(spa_config_path);
486 list_insert_head(&spa->spa_config_list, dp);
487
488 VERIFY(nvlist_alloc(&spa->spa_load_info, NV_UNIQUE_NAME,
489 KM_SLEEP) == 0);
490
490 if (config != NULL)
491 if (config != NULL) {
492 nvlist_t *features;
493
494 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_FEATURES_FOR_READ,
495 &features) == 0) {
496 VERIFY(nvlist_dup(features, &spa->spa_label_features,
497 0) == 0);
498 }
499
491 VERIFY(nvlist_dup(config, &spa->spa_config, 0) == 0);
500 VERIFY(nvlist_dup(config, &spa->spa_config, 0) == 0);
501 }
492
502
503 if (spa->spa_label_features == NULL) {
504 VERIFY(nvlist_alloc(&spa->spa_label_features, NV_UNIQUE_NAME,
505 KM_SLEEP) == 0);
506 }
507
493 return (spa);
494}
495
496/*
497 * Removes a spa_t from the namespace, freeing up any memory used. Requires
498 * spa_namespace_lock. This is called only after the spa_t has been closed and
499 * deactivated.
500 */

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520 list_remove(&spa->spa_config_list, dp);
521 if (dp->scd_path != NULL)
522 spa_strfree(dp->scd_path);
523 kmem_free(dp, sizeof (spa_config_dirent_t));
524 }
525
526 list_destroy(&spa->spa_config_list);
527
508 return (spa);
509}
510
511/*
512 * Removes a spa_t from the namespace, freeing up any memory used. Requires
513 * spa_namespace_lock. This is called only after the spa_t has been closed and
514 * deactivated.
515 */

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535 list_remove(&spa->spa_config_list, dp);
536 if (dp->scd_path != NULL)
537 spa_strfree(dp->scd_path);
538 kmem_free(dp, sizeof (spa_config_dirent_t));
539 }
540
541 list_destroy(&spa->spa_config_list);
542
543 nvlist_free(spa->spa_label_features);
528 nvlist_free(spa->spa_load_info);
529 spa_config_set(spa, NULL);
530
531 refcount_destroy(&spa->spa_refcount);
532
533 spa_config_lock_destroy(spa);
534
535 for (int t = 0; t < TXG_SIZE; t++)

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1028}
1029
1030/*
1031 * ==========================================================================
1032 * Miscellaneous functions
1033 * ==========================================================================
1034 */
1035
544 nvlist_free(spa->spa_load_info);
545 spa_config_set(spa, NULL);
546
547 refcount_destroy(&spa->spa_refcount);
548
549 spa_config_lock_destroy(spa);
550
551 for (int t = 0; t < TXG_SIZE; t++)

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1044}
1045
1046/*
1047 * ==========================================================================
1048 * Miscellaneous functions
1049 * ==========================================================================
1050 */
1051
1052void
1053spa_activate_mos_feature(spa_t *spa, const char *feature)
1054{
1055 (void) nvlist_add_boolean(spa->spa_label_features, feature);
1056 vdev_config_dirty(spa->spa_root_vdev);
1057}
1058
1059void
1060spa_deactivate_mos_feature(spa_t *spa, const char *feature)
1061{
1062 (void) nvlist_remove_all(spa->spa_label_features, feature);
1063 vdev_config_dirty(spa->spa_root_vdev);
1064}
1065
1036/*
1037 * Rename a spa_t.
1038 */
1039int
1040spa_rename(const char *name, const char *newname)
1041{
1042 spa_t *spa;
1043 int err;

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1178 }
1179
1180 return (guid);
1181}
1182
1183void
1184sprintf_blkptr(char *buf, const blkptr_t *bp)
1185{
1066/*
1067 * Rename a spa_t.
1068 */
1069int
1070spa_rename(const char *name, const char *newname)
1071{
1072 spa_t *spa;
1073 int err;

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1208 }
1209
1210 return (guid);
1211}
1212
1213void
1214sprintf_blkptr(char *buf, const blkptr_t *bp)
1215{
1186 char *type = NULL;
1216 char type[256];
1187 char *checksum = NULL;
1188 char *compress = NULL;
1189
1190 if (bp != NULL) {
1217 char *checksum = NULL;
1218 char *compress = NULL;
1219
1220 if (bp != NULL) {
1191 type = dmu_ot[BP_GET_TYPE(bp)].ot_name;
1221 if (BP_GET_TYPE(bp) & DMU_OT_NEWTYPE) {
1222 dmu_object_byteswap_t bswap =
1223 DMU_OT_BYTESWAP(BP_GET_TYPE(bp));
1224 (void) snprintf(type, sizeof (type), "bswap %s %s",
1225 DMU_OT_IS_METADATA(BP_GET_TYPE(bp)) ?
1226 "metadata" : "data",
1227 dmu_ot_byteswap[bswap].ob_name);
1228 } else {
1229 (void) strlcpy(type, dmu_ot[BP_GET_TYPE(bp)].ot_name,
1230 sizeof (type));
1231 }
1192 checksum = zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name;
1193 compress = zio_compress_table[BP_GET_COMPRESS(bp)].ci_name;
1194 }
1195
1196 SPRINTF_BLKPTR(snprintf, ' ', buf, bp, type, checksum, compress);
1197}
1198
1199void

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1265}
1266
1267dsl_pool_t *
1268spa_get_dsl(spa_t *spa)
1269{
1270 return (spa->spa_dsl_pool);
1271}
1272
1232 checksum = zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name;
1233 compress = zio_compress_table[BP_GET_COMPRESS(bp)].ci_name;
1234 }
1235
1236 SPRINTF_BLKPTR(snprintf, ' ', buf, bp, type, checksum, compress);
1237}
1238
1239void

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1305}
1306
1307dsl_pool_t *
1308spa_get_dsl(spa_t *spa)
1309{
1310 return (spa->spa_dsl_pool);
1311}
1312
1313boolean_t
1314spa_is_initializing(spa_t *spa)
1315{
1316 return (spa->spa_is_initializing);
1317}
1318
1273blkptr_t *
1274spa_get_rootblkptr(spa_t *spa)
1275{
1276 return (&spa->spa_ubsync.ub_rootbp);
1277}
1278
1279void
1280spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp)

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1548 refcount_sysinit();
1549 unique_init();
1550 zio_init();
1551 dmu_init();
1552 zil_init();
1553 vdev_cache_stat_init();
1554 zfs_prop_init();
1555 zpool_prop_init();
1319blkptr_t *
1320spa_get_rootblkptr(spa_t *spa)
1321{
1322 return (&spa->spa_ubsync.ub_rootbp);
1323}
1324
1325void
1326spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp)

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1594 refcount_sysinit();
1595 unique_init();
1596 zio_init();
1597 dmu_init();
1598 zil_init();
1599 vdev_cache_stat_init();
1600 zfs_prop_init();
1601 zpool_prop_init();
1602 zpool_feature_init();
1556 spa_config_load();
1557 l2arc_start();
1558}
1559
1560void
1561spa_fini(void)
1562{
1563 l2arc_stop();

--- 132 unchanged lines hidden --- 		1603 spa_config_load();
1604 l2arc_start();
1605}
1606
1607void
1608spa_fini(void)
1609{
1610 l2arc_stop();

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