linux-ext4 - [Bug 13604] cascade of "mpage_da_map_blocks block allocation failed" errors

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Message-Id: <200909171444.n8HEijdB012292@demeter.kernel.org>
Date:	Thu, 17 Sep 2009 14:44:45 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 13604] cascade of "mpage_da_map_blocks block allocation failed"
 errors

http://bugzilla.kernel.org/show_bug.cgi?id=13604

procaccia <jehan.procaccia@...sudparis.eu> changed:

           What    |Removed                     |Added
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                 CC|                            |jehan.procaccia@...sudparis
                   |                            |.eu

--- Comment #2 from procaccia <jehan.procaccia@...sudparis.eu>  2009-09-17 14:44:42 ---
Any news on this bug ?

I get lots of the same error messages with ext4 and quotas on those ext4 FS:

Message from syslogd@ at Thu Sep 17 16:39:51 2009 ...
gizeh kernel: mpage_da_map_blocks block allocation failed for inode 15407 at
logical offset 0 with max blocks 2 with error -122
Message from syslogd@ at Thu Sep 17 16:39:51 2009 ...
gizeh kernel: This should not happen.!! Data will be lost

$ uname -a
Linux gizeh.int-evry.fr 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009
x86_64 x86_64 x86_64 GNU/Linux
$ rpm -q quota
quota-3.16-7

Will data really be lost ? or is this alert is for people over-quota only ?
I have opened a bug on redhat:
https://bugzilla.redhat.com/show_bug.cgi?id=522615
I've been told to wait until kernel quota for ext4 will be supported, but what
is the probleme ? is there a plan to solve this issue ? perhaps it's already
solve on a newer kernel than mine (2.6.18-164.el5 ) ?
Any news & advice greatly appreciated.
regards .

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