On Fri, 18 Oct 2013, Chris Mason wrote: > Quoting Sage Weil (2013-10-18 11:42:28) > > On Fri, 18 Oct 2013, Josef Bacik wrote: > > > On Thu, Oct 17, 2013 at 12:56:14PM -0700, Sage Weil wrote: > > > > Hey, > > > > > > > > I'm seeing the deadlock below under a ceph-osd workload. There may be a > > > > subtle problem with the async transaction sequence (since nobody but ceph > > > > uses that that I know of), but not obvious to me why > > > > create_pending_snapshots would get stuck on btrfs_tree_lock... > > > > > > > > > > Can you do sysrq+w when this happens so I can see everybody who's blocked? > > > Thanks, > > > > Oops, forgot to attach the bug link. It's at > > > > http://tracker.ceph.com/attachments/download/1035/a > > http://tracker.ceph.com/issues/6451 > > > > The machine is still hung.. if there is additional info I can gather > > you can ping me on irc. > > Thanks Sage and Josef, I've got this one queued up pending an ack from > Sage. But it's obviously not harmful, so I'll probably send this > afternoon either way. This is passing my initial tests! It'll be subjected to the full firehose later tonight; I'll let you know if anything comes up. Thanks! sage -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
