atom feed60 messages in org.freebsd.freebsd-currentRe: zfs: Fatal trap 12: page fault wh...
FromSent OnAttachments
Juergen UngerJul 27, 2009 12:24 am 
O. HartmannJul 27, 2009 12:58 pm 
Juergen UngerJul 27, 2009 2:33 pm 
Andriy GaponJul 28, 2009 2:50 am 
Pawel Jakub DawidekJul 29, 2009 1:47 am 
Thomas BackmanJul 29, 2009 3:31 am 
Andriy GaponJul 29, 2009 4:21 am 
Andriy GaponJul 29, 2009 4:41 am 
Thomas BackmanJul 29, 2009 5:45 am 
Andriy GaponJul 29, 2009 6:03 am 
Thomas BackmanJul 29, 2009 6:23 am 
Andriy GaponJul 29, 2009 6:45 am 
Thomas BackmanJul 29, 2009 6:52 am 
Andriy GaponJul 29, 2009 6:55 am 
Thomas BackmanJul 29, 2009 7:10 am 
Andriy GaponJul 29, 2009 7:35 am 
Andriy GaponJul 29, 2009 9:01 am 
Thomas BackmanJul 29, 2009 9:10 am 
Thomas BackmanJul 29, 2009 10:13 am 
Andriy GaponJul 29, 2009 10:17 am 
Thomas BackmanJul 29, 2009 11:03 am 
Thomas BackmanJul 29, 2009 1:14 pm 
Pawel Jakub DawidekJul 29, 2009 2:17 pm 
Thomas BackmanJul 30, 2009 12:04 am 
Andriy GaponJul 30, 2009 5:11 am 
Thomas BackmanJul 30, 2009 5:51 am 
Andriy GaponJul 30, 2009 6:13 am 
Thomas BackmanJul 30, 2009 6:31 am 
Andriy GaponJul 30, 2009 6:34 am 
Andriy GaponJul 30, 2009 7:24 am 
Thomas BackmanJul 30, 2009 7:39 am 
Andriy GaponJul 30, 2009 7:45 am 
Andriy GaponJul 30, 2009 7:48 am 
Thomas BackmanJul 30, 2009 8:25 am 
Andriy GaponJul 30, 2009 8:39 am 
Thomas BackmanJul 30, 2009 9:41 am 
Thomas BackmanJul 30, 2009 11:29 am 
Andriy GaponJul 30, 2009 11:41 am 
Thomas BackmanJul 31, 2009 2:04 am 
James R. Van ArtsdalenJul 31, 2009 4:44 am 
Thomas BackmanJul 31, 2009 5:26 am 
Thomas BackmanJul 31, 2009 10:09 am 
Tim KientzleAug 1, 2009 10:11 am 
Juergen UngerAug 2, 2009 2:26 am 
Pawel Jakub DawidekAug 2, 2009 2:29 am 
Juergen UngerAug 3, 2009 1:32 pm 
Pawel Jakub DawidekAug 4, 2009 12:33 am 
Juergen UngerAug 4, 2009 12:53 am 
Pawel Jakub DawidekAug 4, 2009 2:49 am 
Juergen UngerAug 4, 2009 2:56 am 
Pawel Jakub DawidekAug 4, 2009 12:50 pm 
Thomas BackmanAug 4, 2009 1:10 pm 
Pawel Jakub DawidekAug 4, 2009 1:25 pm 
Pawel Jakub DawidekAug 4, 2009 11:49 pm 
Thomas BackmanAug 5, 2009 12:08 am 
Thomas BackmanAug 5, 2009 12:20 am 
Pawel Jakub DawidekAug 5, 2009 2:37 am 
Thomas BackmanAug 5, 2009 3:36 am 
Thomas BackmanAug 5, 2009 5:06 am 
Pawel Jakub DawidekAug 6, 2009 10:44 pm 
Subject:Re: zfs: Fatal trap 12: page fault while in kernel mode
From:Pawel Jakub Dawidek (pj@FreeBSD.org)
Date:Aug 2, 2009 2:29:53 am
List:org.freebsd.freebsd-current

On Sun, Aug 02, 2009 at 11:27:14AM +0200, Juergen Unger wrote:

Hi Pawel,

On Wed, Jul 29, 2009 at 10:47:23AM +0200, Pawel Jakub Dawidek wrote:

On Tue, Jul 28, 2009 at 12:50:26PM +0300, Andriy Gapon wrote:

on 27/07/2009 22:58 O. Hartmann said the following:

Juergen Unger wrote:

[snip]

_sx_xlock(3c,0,874aa28d,70f,8ae9a9f8,...) at _sx_xlock+0x43 dmu_buf_update_user(0,8ae9a9f8,0,0,0,...) at dmu_buf_update_user+0x35 zfs_znode_dmu_fini(8ae9a9f8,874b312d,1114,110b,879ab000,...) at zfs_znode_dmu_f3 zfs_freebsd_reclaim(fcd29c3c,1,0,8ec63754,fcd29c60,...) at zfs_freebsd_reclaim+0 VOP_RECLAIM_APV(874b65a0,fcd29c3c,0,0,8ec637c8,...) at VOP_RECLAIM_APV+0xa5 vgonel(8ec637c8,0,80c77037,386,0,...) at vgonel+0x1a4 vnlru_free(80f2a0f0,0,80c77037,300,3e8,...) at vnlru_free+0x2d5 vnlru_proc(0,fcd29d38,80c652bc,33e,871932a8,...) at vnlru_proc+0x80 fork_exit(8090d960,0,fcd29d38) at fork_exit+0xb8 fork_trampoline() at fork_trampoline+0x8

[snip]

P.S. I see that zfs_inactive checks for z_dbuf being NULL and there is the following comment: /* * The fs has been unmounted, or we did a * suspend/resume and this file no longer exists. */ Maybe zfs_freebsd_reclaim should do the same?

Yes, you might be right.

Could you guys, who can reproduce it, try this patch:

http://people.freebsd.org/~pjd/patches/zfs_vnops.c.2.patch

I tried the patch, restarted the whole thing yesterday morning and after less then 24 hours and approximately 3215 zfs-receive jobs it do not crashes anymore, but the last started zfs-receive jobs is hanging, cannot be killed, even not with -9. Even other zfs commands are hanging and cannot be killed, while zpool commands seems to be not affected.

root 86397 0.0 0.0 3920 1308 ?? D 3:18AM 0:00.29 zfs receive -Fv
zzzz/203 root 5001 0.0 0.0 3920 1208 0 D+ 10:45AM 0:00.00 zfs list -t
snapshot root 5477 0.0 0.0 3920 1240 3 D+ 11:08AM 0:00.00 zfs list

also the sync command I tried to execute hangs forever:

root 5457 0.0 0.0 1528 492 2- D+ 11:05AM 0:00.04 sync

Other parts of the system which do not have something todo with zfs are still working well. I will leave the machine running in this state, is there something I can do to retrieve other usefull information for you?

If you can break into debugger and send me 'show alltrace' for starters.

-- Pawel Jakub Dawidek http://www.wheel.pl pj@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am!