>Number: 159045
>Category: misc
>Synopsis: ZFS scrub freezes system
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Jul 19 21:40:08 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Vladislav V. Prodan
>Release: FreeBSD 8.2-STABLE amd64
>Organization:
>Environment:
FreeBSD mary-teresa.XXXXX.ua 8.2-STABLE FreeBSD 8.2-STABLE #0: Wed Jul 13
02:01:02 EEST 2011 [email protected]:/usr/obj/usr/src/sys/XXXXX.4
amd64
>Description:
# zpool list
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
tank 4,06T 2,82T 1,24T 69% 1.00x DEGRADED -
zbackup 464G 181G 283G 39% 1.00x ONLINE -
zroot 460G 90,7G 369G 19% 1.06x ONLINE -
# zpool upgrade
This system is currently running ZFS pool version 28.
All pools are formatted using this version.
# zfs upgrade
This system is currently running ZFS filesystem version 5.
All filesystems are formatted with the current version.
I ran
# zfs scrub zbackup
then the system froze.
Ping to the server running, but the other services - web, nat, mail - did not
respond.
After a hard reboot check this pool continued independently:
# zpool status zbackup
pool: zbackup
state: ONLINE
scan: scrub in progress since Wed Jul 20 00:14:36 2011
26,9G scanned out of 181G at 1/s, (scan is slow, no estimated time)
0 repaired, 14,82% done
config:
NAME STATE READ WRITE CKSUM
zbackup ONLINE 0 0 0
gpt/disk-backup ONLINE 0 0 0
errors: No known data errors
>How-To-Repeat:
zfs scrub <pool>
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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