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Parallel pool import

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This commit allow spa_load() to drop the spa_namespace_lock so
that imports can happen concurrently. Prior to dropping the
spa_namespace_lock, the import logic will set the spa_load_thread
value to track the thread which is doing the import.

Consumers of spa_lookup() retain the same behavior by blocking
when either a thread is holding the spa_namespace_lock or the
spa_load_thread value is set. This will ensure that critical
concurrent operations cannot take place while a pool is being
imported.

The zpool command is also enhanced to provide multi-threaded support
when invoking zpool import -a.

Lastly, zinject provides a mechanism to insert artificial delays
when importing a pool and new zfs tests are added to verify parallel
import functionality.

Contributions-by: Don Brady <don.brady@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Wilson <gwilson@delphix.com>
Closes #16093
This commit is contained in:
George Wilson
2024-04-22 12:42:38 -04:00
committed by GitHub
parent f4f156157d
commit c183d164aa
19 changed files with 818 additions and 72 deletions
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module/zfs/vdev_trim.c
+5 -4
View File
@@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2016 by Delphix. All rights reserved.
* Copyright (c) 2016, 2024 by Delphix. All rights reserved.
* Copyright (c) 2019 by Lawrence Livermore National Security, LLC.
* Copyright (c) 2021 Hewlett Packard Enterprise Development LP
* Copyright 2023 RackTop Systems, Inc.
@@ -1148,7 +1148,8 @@ vdev_trim_stop_all(vdev_t *vd, vdev_trim_state_t tgt_state)
void
vdev_trim_restart(vdev_t *vd)
{
ASSERT(MUTEX_HELD(&spa_namespace_lock));
ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
vd->vdev_spa->spa_load_thread == curthread);
ASSERT(!spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER));
if (vd->vdev_leaf_zap != 0) {
@@ -1568,8 +1569,8 @@ vdev_autotrim_stop_all(spa_t *spa)
void
vdev_autotrim_restart(spa_t *spa)
{
ASSERT(MUTEX_HELD(&spa_namespace_lock));
ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
spa->spa_load_thread == curthread);
if (spa->spa_autotrim)
vdev_autotrim(spa);
}