Re: CVS commit: src/usr.sbin/rpc.lockd

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Fri, Nov 27, 2009 at 03:24:51PM +0000, Matthias Scheler wrote:
> On Fri, Nov 27, 2009 at 03:39:51PM +0100, Manuel Bouyer wrote:
> > On Fri, Nov 27, 2009 at 10:30:32AM +0000, Matthias Scheler wrote:
> > > If I understood the Isilon presentation during EuroBSDCon 2009 correctly
> > > FreeBSD 8.0 has an in-kernel lockd. Porting their code might be
> > > an option to achieve that.
> > 
> > One nice thing about the userland lockd is that if you restart it,
> > all the locks are dropped.
> 
> Does it really? I have to remove "/var/db/statd.status" to achieve that.

Yes, the locks (held by lockd) are really dropped. statd.status is used
by statd; statd is there to tell the clients that the server dropped the
locks (e.g. because it rebooted). So with a nfslocking restart, statd
will inform clients tha locks got lost, and the clients will relock
their files. But if a client has forgotten the lock (because it's
down for example, or just because it's buggy) it won't relock it again.

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           
Manuel.Bouyer%lip6.fr@localhost
     NetBSD: 26 ans d'experience feront toujours la difference
--