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

Alex Crow acrow at integrafin.co.uk
Fri Oct 21 13:43:30 UTC 2016

On 21/10/16 12:07, Alex Crow via samba wrote:
> On 21/10/16 10:52, Ralph Böhme wrote:
>> On Fri, Oct 21, 2016 at 10:30:46AM +0100, Alex Crow via samba wrote:
>>> Interestingly I have a setup here for testing for rollout of S4 AD. 
>>> The file
>>> servers are in an AD domain and are running Sernet 4.4.5, so one 
>>> version
>>> older than production.
>> maybe it's related to bug 12005 that was fixed in 4.4.6? Can you test
>> with attached patch that reverts the change?
>> Cheerio!
>> -slow
> Hi Ralph,
> Some more tests I've done indicate that locking is only working 
> between 2 of my 6 VIPs (one per host). If I open a file on either of 
> these two "working" hosts, it's locked on the other working one, but 
> not on any others. Opening a file on any of the "non-working" hosts 
> means the file is not locked anywhere else.
> On my test setup with only two nodes it seems to work normally with 
> both 4.4.5 and 4.4.6.
> All hosts have the same smb.conf.
> Cheers
> Alex

I've now managed to replicate the error on my test setup. I added a 
third host and all hell broke loose - no locking at all when opening 
Excel files apart from same-host. It seemed fine with two.

I then downgraded to 4.4.5 and the problem persisted. So it cannot be a 
regression from that patch.



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