c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-26 20:22:14 +03:00
Code Issues Packages Projects Releases Wiki Activity

spa_misc: add an API for spa_namespace_lock

Browse Source 
This is useful as debugging support, as it lets namespace lock
operations be traced directly. It will also be useful for future work to
reduce the use of spa_namespace_lock, traditionally a source of
difficult deadlocks.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #17906
This commit is contained in:
Rob Norris
2025-11-11 09:23:39 +11:00
committed by Brian Behlendorf
parent e305c7d596
commit ac0bc4cc00
21 changed files with 260 additions and 204 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/os/freebsd/zfs/spa_os.c
+5 -5
View File
@@ -193,7 +193,7 @@ spa_import_rootpool(const char *name, bool checkpointrewind)
*/
config = spa_generate_rootconf(name);
mutex_enter(&spa_namespace_lock);
spa_namespace_enter(FTAG);
if (config != NULL) {
pname = fnvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME);
VERIFY0(strcmp(name, pname));
@@ -204,7 +204,7 @@ spa_import_rootpool(const char *name, bool checkpointrewind)
* e.g., after reboot -r.
*/
if (spa->spa_state == POOL_STATE_ACTIVE) {
mutex_exit(&spa_namespace_lock);
spa_namespace_exit(FTAG);
fnvlist_free(config);
return (0);
}
@@ -226,7 +226,7 @@ spa_import_rootpool(const char *name, bool checkpointrewind)
&spa->spa_ubsync.ub_version) != 0)
spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL;
} else if ((spa = spa_lookup(name)) == NULL) {
mutex_exit(&spa_namespace_lock);
spa_namespace_exit(FTAG);
fnvlist_free(config);
cmn_err(CE_NOTE, "Cannot find the pool label for '%s'",
name);
@@ -249,7 +249,7 @@ spa_import_rootpool(const char *name, bool checkpointrewind)
VDEV_ALLOC_ROOTPOOL);
spa_config_exit(spa, SCL_ALL, FTAG);
if (error) {
mutex_exit(&spa_namespace_lock);
spa_namespace_exit(FTAG);
fnvlist_free(config);
cmn_err(CE_NOTE, "Can not parse the config for pool '%s'",
name);
@@ -259,7 +259,7 @@ spa_import_rootpool(const char *name, bool checkpointrewind)
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
vdev_free(rvd);
spa_config_exit(spa, SCL_ALL, FTAG);
mutex_exit(&spa_namespace_lock);
spa_namespace_exit(FTAG);
fnvlist_free(config);
return (0);