samba - Nov 2016 - CTDB and locking issues in 4.4.6 (Classic domain)

Hi Alex,

On Wed, 2 Nov 2016 11:29:13 +0000, Alex Crow via samba
<samba at lists.samba.org> wrote:
> On 02/11/16 07:29, Ralph Böhme wrote:
> 
> > On Tue, Nov 01, 2016 at 09:56:06PM +0000, Alex Crow wrote:  
>  [...]  
> >> 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.
If you lock the file from a client attached to 1 node and
"smbstatus -L" shows the lock from all the nodes then CTDB is doing
what it is meant to.  That is, it makes sure that Samba processes see
the same TDB records on all nodes.

Not sure what's going on with the rest of it.  Doing a bit of testing...

peace & happiness,
martin

Hi Martin,

On Thu, Nov 03, 2016 at 05:34:21PM +1100, Martin Schwenke via samba
wrote:
> On Wed, 2 Nov 2016 11:29:13 +0000, Alex Crow via samba
> <samba at lists.samba.org> wrote:
> 
> > On 02/11/16 07:29, Ralph Böhme wrote:
> > 
> > > On Tue, Nov 01, 2016 at 09:56:06PM +0000, Alex Crow wrote:  
> >  [...]  
> > >> 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.
> 
> If you lock the file from a client attached to 1 node and
> "smbstatus -L" shows the lock from all the nodes then CTDB is
doing
> what it is meant to.  That is, it makes sure that Samba processes see
> the same TDB records on all nodes.
hm, smbstatus does a db traverse while smbclient will trigger a
migrate record, so both use different ctdb protcol ops, don't they?
> Not sure what's going on with the rest of it.  Doing a bit of
testing...
I tested on a 3 node test cluster, with 4.4.x and master, works as
expected.

-slow

On Thu, 3 Nov 2016 08:13:53 +0100, Ralph Böhme via samba
<samba at lists.samba.org> wrote:
> On Thu, Nov 03, 2016 at 05:34:21PM +1100, Martin Schwenke via samba wrote:
> > If you lock the file from a client attached to 1 node and
> > "smbstatus -L" shows the lock from all the nodes then CTDB
is doing
> > what it is meant to.  That is, it makes sure that Samba processes see
> > the same TDB records on all nodes.  
> 
> hm, smbstatus does a db traverse while smbclient will trigger a
> migrate record, so both use different ctdb protcol ops, don't they?
Sure.  I was glossing over a lot of details... but I hope we would
notice major breakage like that...  :-)
> > Not sure what's going on with the rest of it.  Doing a bit of
testing...
> 
> I tested on a 3 node test cluster, with 4.4.x and master, works as
> expected.
Yay!

peace & happiness,
martin

>> Not sure what's going on with the rest of it.  Doing a bit of
testing...
> I tested on a 3 node test cluster, with 4.4.x and master, works as
> expected.
>
> -slow
>
Hi there,

Can you send your smb.conf so I can compare it to mine?

Cheers,

Alex
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