Bug#534545: linux-image-2.6.26-2-openvz-686: server is hangs on ?heavy? disk io on ocfs2

[Jonathan Nieder <jrnieder@gmail.com>]

(trying again with newer email address)
Hi,

Jonathan Nieder wrote:
> Szabolcs Gyuris wrote:

>> I use openvz on ocfs2 fs which is on drbd on sw mirror raid.
>>
>> Once or twice a day the server froze.
>>
>> I got a lot of:
>> [116049.348676] (10868,0):dlmunlock_common: 128 ERROR: lockres F000000000000000028c8f0c0517267: Someone is calling dlmunlock while waiting for an ast!
[...]
>> before the server hangs:
>> [222288.239258] (4197,3):dlmunlock_common:128 ERROR: lockres F00000000000000002e601561c073e7: Someone is calling dlmunlock while waiting for an ast!<3>(4197,3):dlmunlock:685 ERROR: dlm status = DLM_BADPARAM
[...]
>> [222310.043131] kernel BUG at fs/ocfs2/dlmglue.c:678!
>
> Sorry for the long silence.  Basic questions:
>
>  - can you still reproduce this?  Are you still using lenny?
>  - is the "kernel BUG" line the same every time it happens?
>  - any other weird symptoms?  Workarounds?  How have you been
>    coping since then?

Thanks for catching this.  Are you still using ocfs2 on openvz,
and if so, can you still reproduce these freezes?