linux-kernel - Re: 2.6.21-git10/11: files getting truncated on xfs? or maybe an nlink problem?

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Date:	Wed, 09 May 2007 17:54:09 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	David Chinner <dgc@....com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Matt Mackall <mpm@...enic.com>, xfs@....sgi.com
Subject: Re: 2.6.21-git10/11: files getting truncated on xfs? or maybe an
 nlink problem?

David Chinner wrote:
> Suspend-resume, eh?
>
> There's an immediate suspect. Can you test this specifically for us?
> i.e. download a known good file set, do some stuff, suspend, resume,
> then check the files? If it doesn't show up the first time, can
> you do it a few times just to rule it out?
>   

Well, I've been doing suspend-resume with xfs for a while without
problems; the problems seem to be recent and easily repeatable.  Which
just means that it could be a new suspend-resume problem, of course.

> If suspend/resume does cause the problem, can you try again but this
> time please run 'xfs_freeze -f <mtpt>' on the filesystem before
> suspend, and then 'xfs_freeze -u <mtpt>' after the resume and see if
> the problem still occurs?

OK, but I tend to find that xfs_freeze ends up locking up large parts of
the system...  (For example, I tried to do the xfs_freeze + lvm snapshot
thing, but the lvm snapshot just blocked on the frozen filesystem until
I unfroze it).  But I'll try it out.  Hm, is there some script I can
stick it into?

    J
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