Date: Mon, 01 Dec 2008 12:42:04 -0700
From: Andreas Dilger <adilger@sun.com>
Subject: Re: EXT4 ENOSPC Bug
In-reply-to: <200812011335.00366.andres@anarazel.de>
To: Andres Freund <andres@anarazel.de>
Cc: Theodore Tso <tytso@mit.edu>, LKML <linux-kernel@vger.kernel.org>,
       linux-ext4@vger.kernel.org
Message-id: <20081201194204.GZ3186@webber.adilger.int>
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 <200812011335.00366.andres@anarazel.de>
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On Dec 01, 2008  13:34 +0100, Andres Freund wrote:
> Are there any additional informations you could use?
> The filesystem is a bit big for you to download unfortunately (and the
> testdata  it contains a bit to sensitive).

Som information that would be useful:
- did you run "e2fsck -f" to see if there were any errors in the filesystem?
- do you run any specific applications that seem to trigger the problem
  (e.g.  Vuze (formerly azureus) as was reported by another user)
- do the applications writing to this file have any unusual IO pattern
  (e.g. mmap IO, lots of write+truncate+write on the same file, etc)

We discussed the creation of a debugging patch to help diagnose this
problem.  It looks like you have already compiled your own kernel, so
I assume it would be possible for you to run with an additional patch?

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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