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Tasks hanging cause node to reboot/stall [message #43553]

Tue, 20 September 2011 19:46

amoon
Messages: 2
Registered: September 2011
Location: B.C, Canada

Junior Member

This has been happening to me on every kernel since the earlier releases when I started testing the RHEL6 branch:

KERNEL: /usr/lib/debug/lib/modules/2.6.32-042stab036.1/vmlinux
DUMPFILE: /var/crash/127.0.0.1-2011-09-14-16:04:55/vmcore [PARTIAL DUMP]
CPUS: 24
DATE: Wed Sep 14 16:03:37 2011
UPTIME: 2 days, 01:57:38
LOAD AVERAGE: 1.77, 1.82, 1.74
TASKS: 2491
NODENAME:
RELEASE: 2.6.32-042stab036.1
VERSION: #1 SMP Thu Sep 1 17:06:37 MSD 2011
MACHINE: x86_64 (2393 Mhz)
MEMORY: 48 GB
PANIC: ""
PID: 813278
COMMAND: "httpd"
TASK: ffff8809de352980 [THREAD_INFO: ffff880bc964e000]
CPU: 13
STATE: TASK_RUNNING (PANIC)

The task will change from either httpd or mysqld or a random cpanel process, in all cases the kernel finds the tasks to be hung and panics.

Can anyone shed some light on this?

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Re: Tasks hanging cause node to reboot/stall [message #43564 is a reply to message #43553]

Sat, 24 September 2011 23:47

bjdea1
Messages: 39
Registered: February 2009

Member

I'm currently seeing a similar issue on RHEL 6 kernel (all of them). I get a random process soft_locking the CPU, using 100% and node load spikes to over 1000 and I lose control of node. This happens on 2 servers, the only 2 servers I am running RHEL6. I'm wondering if my servers have hardware issues, but both have the exact same issue so I'm thinking its more likely to be a driver issue, or something else in the kernel. I'm running 2 Dell 1950 III servers - pretty common mainstream servers.

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Re: Tasks hanging cause node to reboot/stall [message #43664 is a reply to message #43553]

Wed, 05 October 2011 03:37

bjdea1
Messages: 39
Registered: February 2009

Member

Just to update everyone. After changing from Centos 6.0 to Scientific Linux 6.1 my server problems seem to be over and both servers are now stable, uptime of over 8 days currently on both.

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Re: Tasks hanging cause node to reboot/stall [message #43674 is a reply to message #43553]

Thu, 06 October 2011 08:24

xakmak
Messages: 14
Registered: June 2006

Junior Member

I have the same problem.
Server reboot himself every 15-20 hours with kernel crash.
Fresh install of Centos6 on working with Centos5 OVZ server, seems 2.6.32 is not so stable yet.
I have submitted bugreport-
http://bugzilla.openvz.org/show_bug.cgi?id=2027

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