Date: Fri, 30 May 2014 13:10:28 -0700 From: Mike Carlson <mike@bayphoto.com> To: Jordan Hubbard <jkh@mail.turbofuzz.com> Cc: freebsd-fs@FreeBSD.org Subject: Re: ZFS Kernel Panic on 10.0-RELEASE Message-ID: <5388E5B4.3030002@bayphoto.com> In-Reply-To: <EC2EA442-56FC-46B4-A1E2-97523029B7B3@mail.turbofuzz.com> References: <5388D64D.4030400@bayphoto.com> <EC2EA442-56FC-46B4-A1E2-97523029B7B3@mail.turbofuzz.com>
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On 5/30/2014 12:48 PM, Jordan Hubbard wrote:
> On May 30, 2014, at 12:04 PM, Mike Carlson <mike@bayphoto.com> wrote:
>
>> Over the weekend, we had upgraded one of our servers from 9.1-RELEASE =
to 10.0-RELEASE, and then the zpool was upgraded (from 28 to 5000)
>>
>> Tuesday afternoon, the server suddenly rebooted (kernel panic), and as=
soon as it tried to remount all of its ZFS volumes, it panic'd again.
> What=92s the panic text? That=92s pretty crucial in figuring out wheth=
er this is recoverable (e.g. if it=92s spacemap corruption related, proba=
bly not).
>
> - Jordan
>
>
>
I had linked the pictures I took of the console, but here is my manual=20
reproduction:
Fatal trap 12: page fault while in kernel mode
cpuid =3D 7; apic id =3D 07
fault virtual address =3D 0x4a0
fault code =3D supervisor read data, page not present
instruction pointer =3D 0x20:0xffffffff81a7f39f
stack pointer =3D 0x28:0xfffffe1834789570
frame pointer =3D 0x28:0xfffffe18347895b0
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags =3D interrupt enabled, resume, IOPL =3D 0
current process =3D 1849 (txg_thread_enter)
trap number =3D 12
panic: page fault
cpuid =3D 7
KDB: stack backtrace:
#0 0xffffffff808e7dd0 at kdb_backtrace+0x60
#1 0xffffffff808af8b5 at panic+0x155
#2 0xffffffff80c8e629 at trap_fatal+0x3a2
#3 0xffffffff80c8e969 at trap_pfault+0x2c9
#4 0xffffffff80c8e0f6 at trap+0x5e6
#5 0xffffffff80c75392 at calltrap+0x8
#6 0xffffffff81a53b5a at dsl_dataset_block_kill+0x3a
#7 0xffffffff81a50967 at dnode_sync+0x237
#8 0xffffffff81a48fcb at dmu_objset_sync_dnodes+0x2b
#9 0xffffffff81a48e4d at dmo_objset_sync+0x1ed
#10 0xffffffff81a5d29a at dsl_pool_sync+0xca
#11 0xffffffff81a78a4e at spa_sync+0x52e
#12 0xffffffff81a81925 at txg_sync_thread+0x375
#13 0xffffffff8088198a at fork_exit+0x9a
#14 0xffffffff80c758ce at fork_trampoline+0xe
uptime: 46s
Automatic reboot in 15 seconds - press a key on the console to abort
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