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

[Alex Crow]

On 03/11/16 19:37, Volker Lendecke wrote:
> On Thu, Nov 03, 2016 at 07:11:12PM +0000, Alex Crow via samba wrote:
>>
>> 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?
>>
> Does your system have consistent inodes and device ids? Does
>
> stat /some/shared/file
>
> give exactly the same information on all nodes, in particular the
> Device/Inode fields?
>
> Volker
Thanks Volker,

No, it seems it's OK on two servers but not on the third:

[root at zalma ~]# stat testfile
...
  Size: 1286700       Blocks: 2514       IO Block: 65536  regular file
Device: 29h/41d    Inode: 35820037    Links: 1
Access: (0774/-rwxrwxr--)  Uid: ( 3535/     jh3)   Gid: (  513/Domain Users)
Access: 2016-11-03 19:51:46.000000000 +0000
Modify: 2016-11-01 13:06:04.000000000 +0000
Change: 2016-11-01 13:06:04.000000000 +0000
 Birth: -
[root at zalma ~]# ssh zearing "stat testfile"
root at zearing's password:
...
  Size: 1286700       Blocks: 2514       IO Block: 65536  regular file
Device: 29h/41d    Inode: 35820037    Links: 1
Access: (0774/-rwxrwxr--)  Uid: ( 3535/     jh3)   Gid: (  513/Domain Users)
Access: 2016-11-03 19:51:46.000000000 +0000
Modify: 2016-11-01 13:06:04.000000000 +0000
Change: 2016-11-01 13:06:04.000000000 +0000
 Birth: -
[root at zalma ~]# ssh metropolis "stat testfile"
root at metropolis's password:
...
  Size: 1286700       Blocks: 2514       IO Block: 65536  regular file
Device: 26h/38d    Inode: 35820037    Links: 1
Access: (0774/-rwxrwxr--)  Uid: ( 3535/     jh3)   Gid: (  513/Domain Users)
Access: 2016-11-03 19:51:46.000000000 +0000
Modify: 2016-11-01 13:06:04.000000000 +0000
Change: 2016-11-01 13:06:04.000000000 +0000
 Birth: -

NB this is a FUSE mounted FS.

What does the Device: XXh/YYd mean?

Cheers

Alex
--
This message is intended only for the addressee and may contain
confidential information. Unless you are that person, you may not
disclose its contents or use it in any way and are requested to delete
the message along with any attachments and notify us immediately.
This email is not intended to, nor should it be taken to, constitute advice.
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).