[Linux-cluster] GFS

[Gradimir Starovic]

> On Fri, Oct 29, 2004 at 08:40:00AM +0100, Gradimir Starovic wrote:
> > > Both flock() and fcntl() locks are cluster-wide on gfs.  
> > > Since 2.6.9 no kernel patches are required.
> > > 
> > 
> > Is fcntl() locking working for nfs over gfs now, or is server 
> > still calling posix_lock_file w/o calling fs-specific lock()?
> 
> As far as I know, nfs only acquires locks in the vfs 
> (posix_lock_file).
> Do you know anyone who has begun work to add fs-specific calls?
> 

I thought GFS had its gfs_lock file operation, but must say my knowledge
of GFS is not great. The problem is, how can fcntl locking be cluster-wide, 
for nfs on a cluster, if it's done only locally and the cluster fs is
not even told about that. 

cheers
gradimir

> -- 
> Dave Teigland  <teigland at redhat.com>
>