Public bug reported:
>From time to time (sometimes it happens once a week, sometimes - several times
>a day) on loaded fileserver oom-killer began to kill almost everything. The
>only way to stop this is to restart the nfs-kernel-server (if I'm lucky enough
>to be able to log in using ssh).
A sample of such "kills" is attached as file named syslog (the last line is a
manual reboot of this server - it was impossible to restart nfs-kernel-server
this time).
>From the other hand, it soes not seems that server is out of memory: it has
>free RAM and a lot of swap space:
15:15:02 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit
%commit
15:15:02 471904 3588184 88,38 15672 2244164 577396
5,82
15:25:01 472852 3587236 88,35 4356 2239092 576804
5,81
15:35:02 711904 3348184 82,47 3896 2271532 204888
2,06
Average 681650 3378438 83,21 162473 2151526 502496 5,06
15:42:38 LINUX RESTART
(this is last incident)
I have sar running, but I could not understand the reason of such oom-
killer's behavior.
If there is any need of additional information - I would be happy to
send it, but please note that this is a production server, so I could
not reboot it too many times.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: nfs-kernel-server 1:1.2.0-4ubuntu4.1
ProcVersionSignature: Ubuntu 2.6.32-33.72-generic-pae 2.6.32.41+drm33.18
Uname: Linux 2.6.32-33-generic-pae i686
Architecture: i386
Date: Wed Sep 21 16:15:01 2011
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1)
ProcEnviron:
LANG=ru_RU.UTF-8
SHELL=/bin/bash
SourcePackage: nfs-utils
** Affects: nfs-utils (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 lucid
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https://bugs.launchpad.net/bugs/855511
Title:
oom-killer kills almost all due to nfs-kernel-server bug?
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