misc/159210: [ZFS] ZFS (scrub???) freezes system

Vladislav V. Prodan universite at ukr.net
Tue Jul 26 18:50:03 UTC 2011

>Number:         159210
>Category:       misc
>Synopsis:       [ZFS] ZFS (scrub???) freezes system
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 26 18:50:02 UTC 2011
>Originator:     Vladislav V. Prodan
>Release:        FreeBSD 8.2-STABLE amd64
FreeBSD mary-teresa.XXXXX.ua 8.2-STABLE FreeBSD 8.2-STABLE #0: Wed Jul 13 02:01:02 EEST 2011     root at mary-teresa.XXXXX.ua:/usr/obj/usr/src/sys/XXXXX.4  amd64


Similarly kern/159045

# zpool status tank
  pool: tank
 state: DEGRADED
status: One or more devices has been taken offline by the administrator.
        Sufficient replicas exist for the pool to continue functioning in a
        degraded state.
action: Online the device using 'zpool online' or replace the device with
        'zpool replace'.
 scan: scrub repaired 0 in 7h4m with 0 errors on Wed Jul  6 05:19:36 2011

        NAME        STATE     READ WRITE CKSUM
        tank        DEGRADED     0     0     0
          raidz2-0  DEGRADED     0     0     0
            ad8p1   ONLINE       0     0     0
            ad12p1  ONLINE       0     0     0
            ad16p1  OFFLINE      0     0     0
            ad10p1  ONLINE       0     0     0
            ad14p1  ONLINE       0     0     0
            ad18p1  ONLINE       0     0     0

# gpart list ad16
gpart: No such geom: ad16.
# gpart create -s gpt ad16
ad16 created
# gpart add -t freebsd-zfs -l disk2-r ad16
ad16p1 added
# gpart list ad16
Geom name: ad16
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 1465149134
first: 34
entries: 128
scheme: GPT
1. Name: ad16p1
   Mediasize: 750156339712 (698G)
   Sectorsize: 512
   Stripesize: 0
   Stripeoffset: 17408
   Mode: r0w0e0
   rawuuid: bf82fe0a-b7b2-11e0-a9dc-00e04d7b690c
   rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b
   label: disk2-r
   length: 750156339712
   offset: 17408
   type: freebsd-zfs
   index: 1
   end: 1465149134
   start: 34
1. Name: ad16
   Mediasize: 750156374016 (698G)
   Sectorsize: 512
   Mode: r0w0e0
# zpool status tank
Make degraded pool raidz, mark one of the hdd in the pool is offline.
Pull out this hdd.
Insert another hdd instead.
Partition this hdd through gpart.


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