Re: Circular lock / deadlock in kernel client

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On Wednesday 07 December 2011 wrote Sage Weil:
> I pushed a patch to wip-d-lock that may fix this one, but unfortunately
> don't have time to test this very carefully right now.  Let us know if
> that helps, or you can wait until next week.

Rebuilding kernel with that patch.

> The call path that was triggering both of these can be exercised by
> restarting the ceph-mds daemon.  Try running your client for a bit and
> the doing that and see if you get any more splats.

What triggered the kernel problem was bug 1047. ceph-mds crashed on all nodes 
with that assert. When the kernel detected that the main mds connection was 
missing, it tried to reconnect and hung.

We do appreciate how much work you are doing to make Ceph production ready. 
Thank you!

We really want to use Ceph in our product, because the design and experience 
so far have shown a lot of potential.

Amon Ott
-- 
Dr. Amon Ott
m-privacy GmbH           Tel: +49 30 24342334
Am Köllnischen Park 1    Fax: +49 30 24342336
10179 Berlin             http://www.m-privacy.de

Amtsgericht Charlottenburg, HRB 84946

Geschäftsführer:
 Dipl.-Kfm. Holger Maczkowsky,
 Roman Maczkowsky

GnuPG-Key-ID: 0x2DD3A649
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