CTDB internals
Christopher R. Hertel
crh at samba.org
Fri Nov 2 01:44:45 MDT 2012
On 11/02/2012 02:29 AM, Volker Lendecke wrote:
> On Fri, Nov 02, 2012 at 02:18:36AM -0500, Christopher R. Hertel wrote:
>> Ah...
>>
>> No, it's *both*. I just found the notes I need in smb.conf. If I
>> understand correctly, the byte-range locks are stored in brlock.tdb but are
>> also made using fcntl byte-range locking.
>>
>> The only questions for me, then, are to know how byte range locks are
>> enforced by Samba and whether or not I'm miles off in my understanding here.
>
> Before every read and write we check if an fcntl lock is
> set. Racy, but the best we can do.
What information is actually stored in brlock.tdb, and how is it used when
it's checked? Is it a short-cut?
Thanks.
Chris -)-----
--
"Implementing CIFS - the Common Internet FileSystem" ISBN: 013047116X
Samba Team -- http://www.samba.org/ -)----- Christopher R. Hertel
jCIFS Team -- http://jcifs.samba.org/ -)----- ubiqx development, uninq.
ubiqx Team -- http://www.ubiqx.org/ -)----- crh at ubiqx.mn.org
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