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OpenZFS 9191 - dump vdev tree to zfs_dbgmsg when spa load fails due to missing log devices 

Add vdev_print_tree() in spa_check_for_missing_logs() when some log
devices are missing to ease debugging

Authored by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9191
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c5c02e5
Closes #7531
This commit is contained in:
Pavel Zakharov 2016-12-16 14:20:15 -05:00 committed by Brian Behlendorf
parent 189bd0b670
commit db7d07e14b
1 changed files with 2 additions and 0 deletions
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2
module/zfs/spa.c
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@ -1888,6 +1888,7 @@ spa_check_for_missing_logs(spa_t *spa)
if (idx > 0) { if (idx > 0) {
spa_load_failed(spa, "some log devices are missing"); spa_load_failed(spa, "some log devices are missing");
vdev_dbgmsg_print_tree(rvd, 2);
return (SET_ERROR(ENXIO)); return (SET_ERROR(ENXIO));
} }
} else { } else {
@ -1899,6 +1900,7 @@ spa_check_for_missing_logs(spa_t *spa)
spa_set_log_state(spa, SPA_LOG_CLEAR); spa_set_log_state(spa, SPA_LOG_CLEAR);
spa_load_note(spa, "some log devices are " spa_load_note(spa, "some log devices are "
"missing, ZIL is dropped."); "missing, ZIL is dropped.");
vdev_dbgmsg_print_tree(rvd, 2);
break; break;
} }
} }