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

On 03/11/16 13:12, Ralph Böhme wrote:
>
>> Hi there,
>>
>> Can you send your smb.conf so I can compare it to mine?
> sure. It's a virtual cluster in LXC containers with 3 nodes,
> filesystem is a bind mount with ext4.
>
> # cat /var/lib/lxc/ctdb-node0/rootfs/opt/samba/etc/smb.conf
> [global]
>      clustering = yes
>      ctdbd socket = /opt/samba/var/run/ctdb/ctdbd.socket
>      log file = /var/log/samba/log.%m
>      debug pid = yes
>      log level = 2
>
>      netbios name = CTDB-CLUSTER
>      workgroup = CLUSTER
>      security = user
>
>      idmap config *:backend = tdb
>      idmap config *:range = 10000-99999
>
>      store dos attributes = yes
>      read only = no
>      ea support = yes
>
>      include = registry
>
>      disable spoolss = yes
>
> [test]
>      path = /cluster/data/share
>
> -slow
Ah, my smb.conf is missing the "ctdb socket" parameter. According to 
"man smb.conf" this should be set, but I don't remember seeing it
on the
wiki pages.

I'll have a go with that and report back.

Cheers

Alex

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On Thu, Nov 03, 2016 at 02:24:23PM +0000, Alex Crow
wrote:
> 
> On 03/11/16 13:12, Ralph Böhme wrote:
> > 
> > > Hi there,
> > > 
> > > Can you send your smb.conf so I can compare it to mine?
> > sure. It's a virtual cluster in LXC containers with 3 nodes,
> > filesystem is a bind mount with ext4.
> > 
> > # cat /var/lib/lxc/ctdb-node0/rootfs/opt/samba/etc/smb.conf
> > [global]
> >      clustering = yes
> >      ctdbd socket = /opt/samba/var/run/ctdb/ctdbd.socket
> >      log file = /var/log/samba/log.%m
> >      debug pid = yes
> >      log level = 2
> > 
> >      netbios name = CTDB-CLUSTER
> >      workgroup = CLUSTER
> >      security = user
> > 
> >      idmap config *:backend = tdb
> >      idmap config *:range = 10000-99999
> > 
> >      store dos attributes = yes
> >      read only = no
> >      ea support = yes
> > 
> >      include = registry
> > 
> >      disable spoolss = yes
> > 
> > [test]
> >      path = /cluster/data/share
> > 
> > -slow
> 
> Ah, my smb.conf is missing the "ctdb socket" parameter. According
to "man
> smb.conf" this should be set, but I don't remember seeing it on
the wiki
> pages.
if it's not set, the default is used which works in many cases, but
not in mine. If the default wasn't working in your setup, you'd
notice, as clients wouldn't be able to talk to ctdb at all.

-slow

On 03/11/16 14:28, Ralph Böhme wrote:
>
>> Ah, my smb.conf is missing the "ctdb socket" parameter.
According to "man
>> smb.conf" this should be set, but I don't remember seeing it
on the wiki
>> pages.
> if it's not set, the default is used which works in many cases, but
> not in mine. If the default wasn't working in your setup, you'd
> notice, as clients wouldn't be able to talk to ctdb at all.
>
> -slow
I can confirm this made no difference. I see the locking working from
windows between the first two servers but *not* the third. This seems to
match what I had with smbclient. Again, could it be that an FS that
passes ping_pong not be able to work in a CTDB cluster?

The developers of my fs (MooseFS) have said that while file flock() is
working perfectly there is still no directory flock. Could that be a
pointer?

Cheers,

Alex
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The information provided is correct to our knowledge & belief and must not
be used as a substitute for obtaining tax, regulatory, investment, legal or
any other appropriate advice.

"Transact" is operated by Integrated Financial Arrangements Ltd.
29 Clement's Lane, London EC4N 7AE. Tel: (020) 7608 4900 Fax: (020) 7608
5300.
(Registered office: as above; Registered in England and Wales under
number: 3727592). Authorised and regulated by the Financial Conduct
Authority (entered on the Financial Services Register; no. 190856).