Date: Fri, 15 Feb 2008 12:00:29 +0100 From: "Julian H. Stacey" <jhs@berklix.org> To: Oliver Fromme <olli@lurza.secnetix.de> Cc: freebsd-fs@freebsd.org Subject: Re: UFS2 corruption (RELENG_7, amd64) Message-ID: <200802151100.m1FB0TvO054046@fire.js.berklix.net> In-Reply-To: <200802150923.m1F9NHNI010776@lurza.secnetix.de> References: <200802150923.m1F9NHNI010776@lurza.secnetix.de>
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Oliver Fromme wrote:
> Chris Dillon wrote:
> > Oliver Fromme wrote:
> > ...snip...
> >
> > > # fsck -y /dev/da45
> > > ** /dev/da45
> > > ** Last Mounted on [...]
> > > ** Phase 1 - Check Blocks and Sizes
> > > ** Phase 2 - Check Pathnames
> > > UNALLOCATED I=2107428 OWNER=2283830233 MODE=0
> > > SIZE=0 MTIME=Feb 5 08:43 2008
> > > NAME=/D.0131ae2e/B.0786
> > >
> > > UNEXPECTED SOFT UPDATE INCONSISTENCY
> > >
> > > REMOVE? yes
> >
> > I've been seeing "UNEXPECTED SOFT UPDATE INCONSISTENCY" fsck errors
> > show up in some of my filesytem snapshots on a RELENG_6 AMD64 box for
> > years (actually since RELENG_5), which will eventually lead to "panic:
> > snapblkfree: inconsistent block type" if those snapshots are mounted
> > and used.
>
> We do not use snapshots, and we don't see such panics.
> So this is probably unrelated.
>
> Best regards
> Oliver
I've never enabled snapshots either, but was suprised to find one
recently! Though I recall it had been around a long while, it was
also certainly bigger than the physical disk it was on, (presumably
a sparse file). I just deleted it, & guessed some flag or
config file presence/ absence/ corruption etc had somehow
triggered it. (No one else would have enabled snapshots on it).
As it had hung, crashed or been troublesome lately, I did a
foreground fsck rather background, & I think a 2nd fsck -y straight
after 1st, which I think fixed some more, (sometimes does).
Maybe schedule an outage, take off line & single user { foreground
fsck, & repeat till you get a clean run where it fixes nothing ||
backup & newfs }. Good luck!
Julian
--
Julian Stacey: BSDUnixLinux C Prog Admin SysEng Consult Munich www.berklix.com
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