[Ocfs2-devel] dlm stress test hangs OCFS2

Coly Li coly.li at suse.de
Sun Sep 13 07:08:43 PDT 2009


Hi Sunil,

Here is the printk info from your patch. I patched it into 2.6.31-rc8.

This time it's quite easy to wait for the open file blocking happens. All the
trace info on all 2 nodes (x1, and x2) are taken in blocking time.

Thanks.

Sunil Mushran Wrote:
> Thanks, Coly.
> 
> So dlmglue calls dlmlock to downconvert the lock from EX => NL.
> However, in the next iteration, we see lock at PR. Strange.
> 
> Anycase, I have created a patch that should provide more info.
> The patch is against the current mainline. It should apply against
> older trees. But may require a bit of tlc.
> 
> Please re-run with the the following patch.
> http://oss.oracle.com/~smushran/0001-ocfs2-Patch-to-debug-hang-in-dlmglue-when-running-d.patch
> 

-- 
Coly Li
SuSE Labs
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