On Thursday 08 December 2011 wrote Amon Ott: > 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. With the patch the deadlock disappears and the kernel does not hang at the locks afterwards. > > 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. This problem remains, and without a working mds the whole ceph mount hangs. Instead of crashing, mds sometimes goes into a dead loop and uses a cpu core at 100%. This also makes the mount hang. 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 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
