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Date:      Fri, 11 Apr 2014 13:36:16 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Phil Murray <pmurray@nevada.net.nz>, stable@FreeBSD.org
Subject:   Re: Panic in ZFS, solaris assert: sa.sa_magic == 0x2F505A
Message-ID:  <5347C5A0.3030806@FreeBSD.org>
In-Reply-To: <A746AB69-2EB9-47C6-958D-965DF5DF8AA6@nevada.net.nz>
References:  <A746AB69-2EB9-47C6-958D-965DF5DF8AA6@nevada.net.nz>

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on 11/04/2014 11:02 Phil Murray said the following:
> Hi there,
> 
> I’ve recently experienced two kernel panics on 8.4-RELEASE (within 2 days of each other, and both around the same time of day oddly) with ZFS. Sorry no dump available, but panic below.
> 
> Any ideas where to start solving this? Will upgrading to 9 (or 10) solve it?

By chance, could the system be running zfs recv at the times when the panics
happened?

> (Sorry for any errors, hand transcribed from a screenshot)
> 
> panic:solaris asset: sa.sa_magic == 0x2F505A (0x5112fb3d == 0x2f505a), file: /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c, line: 596
> cpuid = 1
> KDB: stack backtrace:
> #0 0xffffffffff8066cb96 at kdb_backtrace+0x66
> #1 0xffffffffff8063925e at panic+0x1ce
> #2 0xffffffffff81292109 at assfail3+0x29
> #3 0xffffffffff811157fe at  zfs_space_delta_cb+0xbe
> #4 0xffffffffff8109ee12 at dmu_objset_userquota_get_ids+0x142
> #5 0xffffffffff810a5e35 at dnode_sync+0xc5
> #6 0xffffffffff8109cf3d at dmu_objset_sync_dnodes+0x5d
> #7 0xfffffffff8109d0c9 at dmu_objset_sync+0x169
> #8 0xffffffffff810b446a at dsl_pool_sync+0xca
> #9 0xffffffffff810c4c3a at spa_sync+0x34a
> #10 0xffffffffff810d6959 at txg_sync_thread+0x139
> #11 0xffffffffff8060dc7f at fork_exit+0x11f
> #12 0xffffffffff809a9c1e at fork_trampoline+0xe
> Uptime: 37d8h9m39s
> Cannot dump. Device not defined or unavailable
> Automatic reboot in 15 seconds - press a key on the console to abort
> 
> (Never actually reboots)
> 
> 
> ZFS setup:
> 
> [root@bellagio ~]# zpool status
>   pool: spool
>  state: ONLINE
>   scan: scrub repaired 0 in 13h18m with 0 errors on Wed Mar 12 19:14:08 2014
> config:
> 
> 	NAME        STATE     READ WRITE CKSUM
> 	spool       ONLINE       0     0     0
> 	  mirror-0  ONLINE       0     0     0
> 	    ada2    ONLINE       0     0     0
> 	    ada3    ONLINE       0     0     0
> 
> errors: No known data errors
> 
> [root@bellagio ~]# zfs get all spool
> NAME   PROPERTY              VALUE                  SOURCE
> spool  type                  filesystem             -
> spool  creation              Fri Feb 25 19:45 2011  -
> spool  used                  692G                   -
> spool  available             222G                   -
> spool  referenced            692G                   -
> spool  compressratio         1.00x                  -
> spool  mounted               yes                    -
> spool  quota                 none                   default
> spool  reservation           none                   default
> spool  recordsize            128K                   default
> spool  mountpoint            /var/spool/imap        local
> spool  sharenfs              off                    default
> spool  checksum              on                     default
> spool  compression           off                    local
> spool  atime                 off                    local
> spool  devices               on                     default
> spool  exec                  on                     default
> spool  setuid                on                     default
> spool  readonly              off                    default
> spool  jailed                off                    default
> spool  snapdir               hidden                 default
> spool  aclmode               discard                default
> spool  aclinherit            restricted             default
> spool  canmount              on                     default
> spool  xattr                 off                    temporary
> spool  copies                1                      default
> spool  version               5                      -
> spool  utf8only              off                    -
> spool  normalization         none                   -
> spool  casesensitivity       sensitive              -
> spool  vscan                 off                    default
> spool  nbmand                off                    default
> spool  sharesmb              off                    default
> spool  refquota              none                   default
> spool  refreservation        none                   default
> spool  primarycache          all                    default
> spool  secondarycache        all                    default
> spool  usedbysnapshots       0                      -
> spool  usedbydataset         692G                   -
> spool  usedbychildren        114M                   -
> spool  usedbyrefreservation  0                      -
> spool  logbias               latency                default
> spool  dedup                 off                    default
> spool  mlslabel                                     -
> spool  sync                  standard               default
> spool  refcompressratio      1.00x                  -
> spool  written               692G                   -
> 
> 
> 
> Cheers
> 
> Phil
> 
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> 


-- 
Andriy Gapon



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