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Re: IBM RAID controller re-mount lock [message #36984 is a reply to message #36976] Thu, 06 August 2009 09:00 Go to previous messageGo to previous message
maratrus is currently offline  maratrus
Messages: 1495
Registered: August 2007
Location: Moscow
Senior Member
Hello,

- let's increase the verbose level of vzctl utility. In /etc/vz/vz.conf please set LOG_LEVEL and VERBOSE variables both to 10.

-
Quote:

OpenVZ-version is 036test001.


Sorry, I didn't catch this statement.

-
Quote:

openvz-kernel 2.6.26-2-openvz-686.


Do you have a chance to check the stable rhel5-2.6.18 or at least 2.6.18 kernels? I'm not sure that you do, but nevertheless ...
http://download.openvz.org/kernel/

- Are there any suspicious messages in dmesg or in logs?

-
Quote:

The host shows 100% CPU (system-)usage, load goes up to about 10. From our understanding, a container's processes run inside a kernel-process on the host. The container's currently active process (as far as we can tell, it's a different one on any try) takes all the CPU from the host.


Do you have a chance to get the pid of the process that consumes 100% cpu? What is the output of "/proc/pid/wchan"?

-
It may be useful to gather alt-sysrq-* outputs:
alt-sysrq-
1) "m" - for memory info dump
2) "p" - for registers - several times, please, twice the number of CPUs
3) "a" - for scheduler stat - 3 times
4) "w" - another scheduler info - 3 times
5) "t" - for all processes calltraces. Warning - this is a resource consuming operation. At least - twice.

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