Ocfs2 users - Mar 2007 - Strange problems (deadlock) in ocfs2 (rpm 1.2.4-2 and svn 2982) - dlm related?

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

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>
Suporte Engenharia 1
Terra Networks Brasil S/A
Tel: 55 (51) 3284-4238

Qual ? a sua Terra?

How many nodes in the cluster?

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
>
> 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
>