[Ocfs2-users] Strange problems (deadlock) in ocfs2 (rpm 1.2.4-2 and svn 2982) - dlm related?

[Marcus Alves Grando]

Sunil Mushran wrote:
> How many nodes in the cluster?

Four.

> 
> Marcus Alves Grando wrote:
>> Hi list,
>>
>> I have some problems testing ocfs2. My test consist in:
>>
>> #server1: dd if=/dev/random of=/ocfs2_1/test &
>> #server1: dd if=/dev/random of=/ocfs2_2/test &
>> #server1: dd if=/dev/random of=/ocfs2_3/test &
>> ...
>> #server1: dd if=/dev/random of=/ocfs2_12/test &
>> #server1:<Ctrl><Alt><SysRQ>B

Correct is: <Alt>+<SysRQ>+b

Regards

>>
>> After that, another node begin recovery. After some time (+- 3min), 
>> recovery is done. When server1 boot and try mounting all ocfs2 
>> filesystems, some problem occurs. Most filesystems mount, but one 
>> doesn't. In another node i try to access this filesystem (like ls or 
>> cd), and freeze sheel. With ps i can see status of that process: "D+" 
>> (Uninterruptible sleep).
>>
>> Today i'm use svn version 2982 (ocfs2-1.2 branch), and doesn't help. 
>> ocfs2-tool are 1.2.3. And i test ocfs2-1.2.3 and ocfs2-1.2.4 redhat 
>> AS4 rpms too without success. Servers are RedHat AS4.4, with all 
>> updated applied.
>>
>> The only way to back this filesystem online are rebooting all nodes. :(
>>
>> Someone know about this problem or have fix for that? Maybe dlm 
>> ralated issue? I see many commits dlm related in git...
>>
>> Regards
>>

-- 
Marcus Alves Grando <marcus.grando [] terra.com.br>
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Terra Networks Brasil S/A
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