Date: Wed, 15 Oct 2003 09:31:07 -0400 (EDT) From: Robert Watson <rwatson@freebsd.org> To: "Vladimir B. Grebenschikov" <vova@sw.ru> Cc: "current@freebsd.org" <current@freebsd.org> Subject: Re: fsck_ufs -B lockup any writes on filesystem Message-ID: <Pine.NEB.3.96L.1031015092910.48934C-100000@fledge.watson.org> In-Reply-To: <1066203984.1271.27.camel@localhost>
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On Wed, 15 Oct 2003, Vladimir B. Grebenschikov wrote:
> After unclean shutdown, system boots and work properly. After some time
> any processes triing to write was blocked in suspfs state. fsck_ufs
> process was blocked in suspwt state.
I reported an identical set of symptoms over the weekend to Kirk and Jeff,
and a fix was committed as src/sys/kerne/vfs_bio.c:1.412. A missing write
lock release in buffer cache locking work would leave the disk suspended
for writes, and the result is a file system deadlock just as you describe.
Could you check and see which version of vfs_bio.c you're running with --
if it's the earlier version, try updating? If it's the newer version,
please let me know. Here's the commit message:
Date: Mon, 13 Oct 2003 17:38:35 -0700 (PDT)
From: Jeff Roberson <jeff@FreeBSD.org>
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern vfs_bio.c
jeff 2003/10/13 17:38:35 PDT
FreeBSD src repository
Modified files:
sys/kern vfs_bio.c
Log:
- Add a mising vn_finished_write()
Pointy hat: jeff
Found by: robert
Obtained from: kirk
Revision Changes Path
1.412 +1 -0 src/sys/kern/vfs_bio.c
>
> Killing blocked processes does not helps.
>
> # ps alx | fgrep fsck_ufs
> 0 917 736 0 75 0 676 268 suspwt D ?? 0:00.91
> fsck_ufs -p -B /dev/ad0s3f
>
> # strace -p 917
> mount(0x80af3d3, 0x80cb44c, 0x1211000, 0xbfbffcc0^C <unfinished ...>
> ^C
>
> # ps alx | fgrep suspfs
> 0 559 1 0 75 0 7076 1588 suspfs Is ?? 0:01.92
> /usr/local/sbin/cupsd
> 207 611 609 0 75 0 8832 2396 suspfs I ?? 0:00.11
> /usr/X11R6/bin/gdm-binary
> 207 836 1 0 75 0 18000 9108 suspfs I ?? 0:02.33
> /usr/X11R6/libexec/stickynotes_applet
> 207 865 1 2 75 0 55932 41028 suspfs I ?? 1:59.49
> evolution-1.4
> 207 867 1 0 75 0 32296 16000 suspfs I ?? 0:22.15
> /usr/X11R6/share/opera/bin/opera --bi
> 207 942 1 0 75 0 4120 2068 suspfs I p0- 0:00.04 licq
>
> I can cure situation only be running fsck -y in single-user mode.
>
> PR: kern/58060
>
> --
> Vladimir B. Grebenschikov <vova@sw.ru>
> SWsoft Inc.
>
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