zombie processes on SMP kernel under high load (kernel2.4.18 +xfs1.1)

[Ondrej Sury <sury.ondrej@globe.cz>]

Hello,

maybe not XFS related, but it happens when XFS is present.


System is:
2x P4 Xeon
board is Intel serverboard
RAID-5 on Adaptec 2110S.

This bugs reveals only under high load (CPU), suddenly there started to be
zombie (D state) processes which had init as parent, and I was unable to do
anything else then reboot.  There was no syslog/klog message.  I use this
server as NFS backend to mail service and since frontend which is
delivering mail had failure on one disk in array I switched delivery to
backend and it ended with 5k+ zombie processes of kavdaemon and other
processes.  This bug seem to be ACL related since there was report in czech
linux mailing list about same experience on ext3+xattr+acl.  I am not able
to do destructive tests on this machine since it holds customer data, but I
am willing to cooperate since I would like to use XFS as file server file
system.

Had anyone same experience or I am alone?

O.

-- 
Ondrej Sury - CIO                   Globe Internet s.r.o. http://globe.cz/
Tel: +420(2)35365000 Fax: +420(2)35365009     Planickova 1, 162 00 Praha 6