Ocfs2 users - Sep 2004 - file locking in OCFS2

Greetings,
We want to experiment with a small cluster with OCFS2 and are trying to 
find
out if OCFS2 supports all the file operation functionallity that we need.
When it says on the OCSF2 project home page that the new features include 
POSIX compliance,
what does this exactly mean.
More specifically, would concurrent fcntl( ... F_SETLKW ...) calls on 
OCFS2 files from different
cluster nodes work as in NFS?
If not, is there an alternate API and documentation?
Quick inspection of the OCFS2 source tree suggests there is at least a 
distributed lock manager
involved.
Does it have an API and would it be possible to use it to create locks on 
'virtual files'?
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On Tue, Sep 21, 2004 at 06:10:56PM +0200, ocfs2@asset-control.com
wrote:
> 
> Greetings,
> We want to experiment with a small cluster with OCFS2 and are trying to
find
> out if OCFS2 supports all the file operation functionallity that we need.
> When it says on the OCSF2 project home page that the new features include
POSIX
> compliance,
> what does this exactly mean.
Well, basically it means we pass the LTP posix tests for a local file system
(single node basically).
> More specifically, would concurrent fcntl( ... F_SETLKW ...) calls on OCFS2
> files from different
> cluster nodes work as in NFS?
Not yet, though it's on our feature list for post 1.0.
> If not, is there an alternate API and documentation?
> Quick inspection of the OCFS2 source tree suggests there is at least a
> distributed lock manager
> involved.
> Does it have an API and would it be possible to use it to create locks on
> 'virtual files'?
No, we don't export the lock manager api to userspace :)
	--Mark
> _______________________________________________
> Ocfs2-users mailing list
> Ocfs2-users@oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-users
--
Mark Fasheh
Software Developer, Oracle Corp
mark.fasheh@oracle.com