Add support for parallel pool exports

Changed spa_export_common() such that it no longer holds the
spa_namespace_lock for the entire duration and instead sets
spa_export_thread to indicate an import is in progress on the
spa.  This allows for an export to a diffent pool to proceed
in parallel while an export is still processing potentially
long operations like spa_unload_log_sm_flush_all().

Calls like spa_lookup() and spa_vdev_enter() that rely on
the spa_namespace_lock to serialize them against a concurrent
export, now wait for any in-progress export thread to complete
before proceeding.

The 'zpool import -a' sub-command also provides multi-threaded
support, using a thread pool to submit the exports in parallel.

Sponsored-By: Klara Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #16153
This commit is contained in:
Don Brady
2024-05-02 19:28:10 +00:00
committed by Brian Behlendorf
parent abec7dcd30
commit 975a13259b
12 changed files with 373 additions and 33 deletions
+2 -1
View File
@@ -430,7 +430,8 @@ tags = ['functional', 'cli_root', 'zpool_events']
[tests/functional/cli_root/zpool_export]
tests = ['zpool_export_001_pos', 'zpool_export_002_pos',
'zpool_export_003_neg', 'zpool_export_004_pos']
'zpool_export_003_neg', 'zpool_export_004_pos',
'zpool_export_parallel_pos', 'zpool_export_parallel_admin']
tags = ['functional', 'cli_root', 'zpool_export']
[tests/functional/cli_root/zpool_get]