On Fri, May 8, 2015 at 1:18 PM, Vandeir Eduardo
<vandeir.eduardo@xxxxxxxxx> wrote:
> This causes an annoying problem with rbd resource agent in pacemaker. In a
> situation where pacemaker needs to stop a rbd resource agent on a node where
> there is no network connection, the rbd unmap command hangs. This causes the
> resource agent stop command to timeout and the node is fenced.
>
> On Thu, May 7, 2015 at 4:37 PM, Ilya Dryomov <idryomov@xxxxxxxxx> wrote:
>>
>> On Thu, May 7, 2015 at 10:20 PM, Vandeir Eduardo
>> <vandeir.eduardo@xxxxxxxxx> wrote:
>> > Hi,
>> >
>> > when issuing rbd unmap command when there is no network connection with
>> > mons
>> > and osds, the command hangs. Isn't there a option to force unmap even on
>> > this situation?
>>
>> No, but you can Ctrl-C the unmap command and that should do it. In the
>> dmesg you'll see something like
>>
>> rbd: unable to tear down watch request
>>
>> and you may have to wait for the cluster to timeout the watch.
We can probably add a --force to rbd unmap. That would require extending our
sysfs interface but I don't see any obstacles. Sage?
Thanks,
Ilya
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