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2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
@@ -18,11 +18,11 @@
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2011 by Delphix. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
#include <sys/dsl_pool.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_prop.h>
@@ -38,10 +38,12 @@
#include <sys/zfs_context.h>
#include <sys/fs/zfs.h>
#include <sys/zfs_znode.h>
#include <sys/spa_impl.h>
#include <sys/dsl_deadlist.h>
+#include <sys/bptree.h>
+#include <sys/zfeature.h>
int zfs_no_write_throttle = 0;
int zfs_write_limit_shift = 3; /* 1/8th of physical memory */
int zfs_txg_synctime_ms = 1000; /* target millisecs to sync a txg */
@@ -98,24 +100,36 @@
return (dp);
}
int
-dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp)
+dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp)
{
int err;
dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
+
+ err = dmu_objset_open_impl(spa, NULL, &dp->dp_meta_rootbp,
+ &dp->dp_meta_objset);
+ if (err != 0)
+ dsl_pool_close(dp);
+ else
+ *dpp = dp;
+
+ return (err);
+}
+
+int
+dsl_pool_open(dsl_pool_t *dp)
+{
+ int err;
dsl_dir_t *dd;
dsl_dataset_t *ds;
uint64_t obj;
- rw_enter(&dp->dp_config_rwlock, RW_WRITER);
- err = dmu_objset_open_impl(spa, NULL, &dp->dp_meta_rootbp,
- &dp->dp_meta_objset);
- if (err)
- goto out;
+ ASSERT(!dmu_objset_is_dirty_anywhere(dp->dp_meta_objset));
+ rw_enter(&dp->dp_config_rwlock, RW_WRITER);
err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
DMU_POOL_ROOT_DATASET, sizeof (uint64_t), 1,
&dp->dp_root_dir_obj);
if (err)
goto out;
@@ -127,11 +141,11 @@
err = dsl_pool_open_special_dir(dp, MOS_DIR_NAME, &dp->dp_mos_dir);
if (err)
goto out;
- if (spa_version(spa) >= SPA_VERSION_ORIGIN) {
+ if (spa_version(dp->dp_spa) >= SPA_VERSION_ORIGIN) {
err = dsl_pool_open_special_dir(dp, ORIGIN_DIR_NAME, &dd);
if (err)
goto out;
err = dsl_dataset_hold_obj(dp, dd->dd_phys->dd_head_dataset_obj,
FTAG, &ds);
@@ -144,11 +158,11 @@
dsl_dir_close(dd, dp);
if (err)
goto out;
}
- if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
+ if (spa_version(dp->dp_spa) >= SPA_VERSION_DEADLISTS) {
err = dsl_pool_open_special_dir(dp, FREE_DIR_NAME,
&dp->dp_free_dir);
if (err)
goto out;
@@ -158,27 +172,31 @@
goto out;
VERIFY3U(0, ==, bpobj_open(&dp->dp_free_bpobj,
dp->dp_meta_objset, obj));
}
+ if (spa_feature_is_active(dp->dp_spa,
+ &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
+ DMU_POOL_BPTREE_OBJ, sizeof (uint64_t), 1,
+ &dp->dp_bptree_obj);
+ if (err != 0)
+ goto out;
+ }
+
+ err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
DMU_POOL_TMP_USERREFS, sizeof (uint64_t), 1,
&dp->dp_tmp_userrefs_obj);
if (err == ENOENT)
err = 0;
if (err)
goto out;
- err = dsl_scan_init(dp, txg);
+ err = dsl_scan_init(dp, dp->dp_tx.tx_open_txg);
out:
rw_exit(&dp->dp_config_rwlock);
- if (err)
- dsl_pool_close(dp);
- else
- *dpp = dp;
-
return (err);
}
void
dsl_pool_close(dsl_pool_t *dp)
@@ -468,11 +486,11 @@
*/
int
dsl_pool_sync_context(dsl_pool_t *dp)
{
return (curthread == dp->dp_tx.tx_sync_thread ||
- spa_get_dsl(dp->dp_spa) == NULL);
+ spa_is_initializing(dp->dp_spa));
}
uint64_t
dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree)
{
@@ -786,15 +804,12 @@
objset_t *mos = dp->dp_meta_objset;
ASSERT(dp->dp_tmp_userrefs_obj == 0);
ASSERT(dmu_tx_is_syncing(tx));
- dp->dp_tmp_userrefs_obj = zap_create(mos, DMU_OT_USERREFS,
- DMU_OT_NONE, 0, tx);
-
- VERIFY(zap_add(mos, DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_TMP_USERREFS,
- sizeof (uint64_t), 1, &dp->dp_tmp_userrefs_obj, tx) == 0);
+ dp->dp_tmp_userrefs_obj = zap_create_link(mos, DMU_OT_USERREFS,
+ DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_TMP_USERREFS, tx);
}
static int
dsl_pool_user_hold_rele_impl(dsl_pool_t *dp, uint64_t dsobj,
const char *tag, uint64_t *now, dmu_tx_t *tx, boolean_t holding)