linux-kernel - Re: FAQ updated (was Re: XFS breakage...)

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Date:	Thu, 20 Jul 2006 11:13:57 -0400
From:	"Kevin Radloff" <radsaq@...il.com>
To:	"Nathan Scott" <nathans@....com>
Cc:	"Kasper Sandberg" <lkml@...anurb.dk>,
	"Justin Piszcz" <jpiszcz@...idpixels.com>,
	"Torsten Landschoff" <torsten@...ian.org>,
	linux-kernel@...r.kernel.org, xfs@....sgi.com
Subject: Re: FAQ updated (was Re: XFS breakage...)

On 7/20/06, Nathan Scott <nathans@....com> wrote:
> On Wed, Jul 19, 2006 at 12:21:08PM +0200, Kasper Sandberg wrote:
> > On Wed, 2006-07-19 at 08:57 +1000, Nathan Scott wrote:
> > > On Wed, Jul 19, 2006 at 12:29:41AM +0200, Torsten Landschoff wrote:
> > > >
> > > > Jul 17 07:33:53 pulsar kernel: xfs_da_do_buf: bno 16777216
> > > > Jul 17 07:33:53 pulsar kernel: dir: inode 54526538
> > >
> > > I suspect you had some residual directory corruption from using the
> > > 2.6.17 XFS (which is known to have a lurking dir2 corruption issue,
> > > fixed in the latest -stable point release).
>
> Correction there - no -stable exists with this yet, I guess that'll
> be 2.6.17.7 once its out though.
>
> > what action do you suggest i do now?
>
> I've captured the state of this issue here, with options and ways
> to correct the problem:
>         http://oss.sgi.com/projects/xfs/faq.html#dir2
>
> Hope this helps.

I actually tried the xfs_db method to fix my / filesystem (as you had
outlined in http://marc.theaimsgroup.com/?l=linux-kernel&m=115070320401919&w=2),
and while it's quite possible that I screwed it up, after a subsequent
xfs_repair run (which completed successfully and moved lots of stuff
to /lost+found, as I would expect), the XFS code had serious problems
with various parts of my filesystem (like "ls /lost+found", which
would cause lots of errors to be logged, although not a complete fs
shutdown). After another run through xfs_repair resulted in a
filesystem that would no longer even successfully boot.

Unfortunately it was a mostly-full 74GB big-/ partition on my primary
machine (a laptop), so I don't have a dump of it for you and my report
is probably pretty useless. :( But on the bright side, virtually all
of the filesystem was otherwise intact and I was able to get all my
data off before rebuilding my system.

-- 
Kevin 'radsaq' Radloff
radsaq@...il.com
http://thesaq.com/
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