[Samba] CTDB and locking issues in 4.4.6 (Classic domain)

Alex Crow acrow at integrafin.co.uk
Wed Nov 2 11:29:13 UTC 2016

On 02/11/16 07:29, Ralph Böhme wrote:

> On Tue, Nov 01, 2016 at 09:56:06PM +0000, Alex Crow wrote:
>>> well, yes and no. I did find some time to look into those logs and
>>> those just tell use, that the second smbd on the second node that
>>> fetches the lock record from the (clustered) locking db doesn't see
>>> the record from the first node. ctdb debug logs might be telling, so
>>> posting a full set of smbd and ctdb logs to the mailing list would be
>>> the next step.
>>> Currently I have no idea how this can happen, getting to the bottom of
>>> this is certainly fun and entertaining, but also very time
>>> consuming. At the moment I don't have the time to do this in my free
>>> time, maybe someone else from the mailing list has.
>>> -slow
>> Hi Ralph,
>> Thanks for that. Can I post the above back to the ML with links to
>> appropriate logs?
> sure.
> Btw, I forgot to mention that I did test this on my own devel cluster,
> both development version from git master as well as production 4.4,
> and could not reproduce the issue.
> -slow

Is anyone able to assist with this issue? I have produced level 10 logs 
but not sure how to debug CTDB.

As a quick reminder the problem is that locks on one server are not 
being honoured when a client connects to another server in the cluster.


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