Samba and Windoze and Links and backups

Samba and Windoze and Links and backups

Post by Paul Morri » Tue, 23 Sep 1997 04:00:00



Just a guess but is it possible that your Seagate Backup Exec uses
'opportunistic locking'? It turns out that MS Outlook does. And as a result
placing an Outlook PST file on a SAMBA share allows me to open it but will
not Send or Receive mail. I have not yet found a way to make this work.
--
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Paul Morris
Senior Network Specialist
HBS Systems

http://www.cyg.net/~pmorris



> Just looking for advice from anyone who has deon something similar...

> I have a tape drive whihc unix doesn't understand, so it lives on a
> win95 machine. I want to use this to backup my unix machine
> automagicly. The problem is that I set the backup program (Seagate
> Backup Exec) off and it starts looking for files to backup and doesn't
> stop. Sicne it is finding more bytes of data than I have disk space I
> presume it is looping in some way, most likely there is a cycle of
> symbolic links somewhere.

> However, when I turned on samba debugging it seemd to be stuck at a
> point where there are no links in sight.

> Is there some other reason samba/win95 could be getting confused --
> it's down a quite deep tree when it goes la-la, i there a maxium
> path length?

> If it is links, is there a way to make samba ignore links (pref
> temporarilly, though as a matter of fact I don't know of any reason
> the win95 machine need ever know about symbolically linked things).

> Does anyone have advice on how best to set up an automatic backup
> mechanism via samba, obviously incrementals as windows software does
> them are not going to work without the DOS archive bit.

> Any help gratefully recieved by a terminal paranoid who likes to have
> his data in an many places at once as possible:-).

> --

>                                     |<

 
 
 

Samba and Windoze and Links and backups

Post by Jeremy Allis » Wed, 24 Sep 1997 04:00:00



>Just a guess but is it possible that your Seagate Backup Exec uses
>'opportunistic locking'? It turns out that MS Outlook does. And as a result
>placing an Outlook PST file on a SAMBA share allows me to open it but will
>not Send or Receive mail. I have not yet found a way to make this work.
>--

Well, oplocks are not something that an application program
on Win32 can control - the redirector does all that 'underneath
the covers' so to speak.

Samba is compatible with oplocks - we always return 'failed
to get oplock' (unless you set 'fake oplocks = true', in
which case we always return 'got oplock' :-). Seriously,
though, this should not stop any client software from
working, it'll just be slower.

On a more positive note, I am putting oplocks suport into the
to-be-released Samba 1.9.18alpha code series - no idea when
I'll be finished yet, sorry.

Hope this helps,

Jeremy Allison,
Samba Team.

 
 
 

1. Samba and Windoze and Links and backups

I did find a loop and not wherethe system was aparently looping, I
presume the log files for samba aren't flushed to disk as often as
could be or something as it had got quite a bit further than the log
would seem to indicate.

Any help on how to do incrmental backups still much apreciated.

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