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Re: Kernel 2.6.30: Memory/XFS leak, OOM killer kills many processes

To: linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: Kernel 2.6.30: Memory/XFS leak, OOM killer kills many processes
From: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Date: Thu, 11 Jun 2009 13:00:15 -0400 (EDT)
Cc: xfs@xxxxxxxxxxx
In-reply-to: <alpine.DEB.2.00.0906111158470.2563@xxxxxxxxxxxxxxxx>
References: <alpine.DEB.2.00.0906111158470.2563@xxxxxxxxxxxxxxxx>
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)


On Thu, 11 Jun 2009, Justin Piszcz wrote:

Hello,

I have a daily cron that backs up my root filesystem using xfsdump, it has remain unchanged for at least 7-10 kernel versions. When I migrated to 2.6.30, when the xfsdump ran at its scheduled time, nearly all of my processes were killed due to an OOM situation, I can reproduce the situation.

Kernel: 2.6.30
Dist: Debian Testing
xfsdump: 2.2.48-1

Kernel 2.6.29.4 does not exhibit this problem:

xfsdump: estimated dump size: 8694781376 bytes
xfsdump: creating dump session media file 0 (media 0, file 0)
xfsdump: dumping ino map
xfsdump: dumping directories
xfsdump: dumping non-directory files
xfsdump: ending media file
xfsdump: media file size 8294709848 bytes
xfsdump: dump size (non-dir files) : 8208863560 bytes
xfsdump: dump complete: 102 seconds elapsed
xfsdump: Dump Status: SUCCESS

XFS(?) bug in 2.6.30.

Justin.

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