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Re: Sudden File System Corruption

To: Ben Myers <bpm@xxxxxxx>
Subject: Re: Sudden File System Corruption
From: Mike Dacre <mike.dacre@xxxxxxxxx>
Date: Fri, 6 Dec 2013 15:15:33 -0800
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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Hey Guys,

Here is the repair log from right after the corruption happened. ÂThe repair was successful.


On Fri, Dec 6, 2013 at 2:56 PM, Ben Myers <bpm@xxxxxxx> wrote:
Hey Mike,

On Thu, Dec 05, 2013 at 04:40:46PM -0800, Mike Dacre wrote:
> On Thu, Dec 5, 2013 at 4:23 PM, Ben Myers <bpm@xxxxxxx> wrote:
> > On Thu, Dec 05, 2013 at 04:06:27PM -0800, Mike Dacre wrote:
> > > I sent you the output of the xfs_repair command, and also the logprint,
> > but
> > > I couldn't get a metadump as the filesystem is mounted. ÂI can't unmount
> > > the file system, it is too important. ÂSorry.
> > >
> > > The logprint is in a tar archive at
> > > ftp://shell.sgi.com/receive/mike_dacre/mike-xfs-files.tar.bz2
> >
> > Thanks for the info. ÂCould you clarify a couple things for me so that I
> > know
> > what I'm looking at?
> >
> > 1) How did you create the logprint file? ÂWas the filesystem mounted at
> > the time?
> >
> The filesystem was mounted, I created it with this command: `xfs_logprint
> -C xfs_logdump.txt /dev/sda1`

Oh, ok. ÂThe logprint I'm looking for would have to be taken immediately after
the forced shutdown. ÂSorry for the confusion.

> > 2) Is the xfs_repair.log you sent the output of the very first run of
> > xfs_repair? ÂOr, is it the output from a second incident? ÂWas the
> > filesystem
> > mounted at the time?
> >
> That is from the first run of xfs_repair, after the filesystem corrupted.
> ÂI ran it with the filesystem unmounted.

It's great that you have this. ÂAnd an interesting repair log. ÂThe good news
is that it doesn't look like the corruption that xfs_repair doesn't fix, the
bad news is that I don't recognise it. ÂIf you wouldn't mind posting the repair
log to the list, I think that would help. ÂAt least it would get some more eyes
on it.

Thanks much,

Attachment: xfs_repair.log
Description: Text Data

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