[OpenAFS] deadlock in OpenAFS 1.4.11 (Solaris 5.10)

[Derrick Brashear]

On Fri, Apr 9, 2010 at 2:21 PM, Derrick Brashear <shadow@gmail.com> wrote:
> On Fri, Apr 9, 2010 at 1:36 PM, John Tang Boyland
> <boyland@pabst.cs.uwm.edu> wrote:
>> ] cmdebug or it didn't happen.
>> ]
>> ] On Fri, Apr 9, 2010 at 12:08 PM, John Tang Boyland
>> ] <boyland@pabst.cs.uwm.edu> wrote:
>> ] > We get an occasional deadlock happening on Solaris 5.10 using
>> ] > OpenAFS 1.4.11. =A0After the problem starts, any attempt to use AFS
>> ] > on the machine freezes: =A0For example:
>>
>> I foolishly thought that with every AFS access deadlocking, cmdebug
>> wouldn't work. =A0But it does....
>
> That's the best time to try it.

Almost certainly a dcache lock (which cmdebug doesn't show, alas)
involved here and causing this.

I suppose the other thing which may help: can you collect fstrace for this?