On Fri, Aug 10, 2012 at 03:20:39PM +1000, NeilBrown wrote: > On Thu, 9 Aug 2012 15:53:01 +0000 "Myklebust, Trond" > <Trond.Myklebust@xxxxxxxxxx> wrote: > > > On Thu, 2012-08-09 at 10:45 -0400, J. Bruce Fields wrote: > > > On Thu, Aug 09, 2012 at 10:06:42AM +0200, Zdenek Salvet wrote: > > > > On Wed, Aug 08, 2012 at 01:18:09PM +0000, Myklebust, Trond wrote: > > > > > > We don't see any hard failures because NFS protocol does > > > > > > not depend on working callback RPCs, but no delegations are granted > > > > > > (we had nfs-kernel-server package installed on clients before which masked > > > > > > the bug). > > > > > > > > > > So your gripe that you object to us requiring you to run rpc.svcgssd in > > > > > order to obtain server features such as NFSv4 callbacks? > > > > > > > > Absolutely not! Just thinking why we did not notice the problem earlier ... > > > > > > I wonder if there's anything we could do to make this more automatic, > > > though: e.g., perhaps whichever scripts are launching one of the gss > > > daemons should be replaced by one that launches both, since that's > > > generally what you'll want for NFSv4.0. (Not necessary for other > > > versions, but it doesn't hurt much.) > > > > > > Or perhaps they could be started on demand somehow. > > > > How is this any different to requiring that the user start rpc.statd > > before launching an NFSv3 mount? Just document the requirement if it > > isn't already clear enough, and we can move on. > > 'mount.nfs' checks if statd is running and will start it if it isn't .... > which will probably annoy systemd as it likes to keep daemons in their own > little box. I guess systemd can be configured to register as statd and > auto-start it on the first 'are you there' request. > > Could the same thing be done with rpc.svcgssd? Get it to auto-start either > by mount.nfs checking and running something, or by systemd pre-registering > the RPC port or something? I wonder how hard it would be to teach systemd to do the socket-activation trick with the cache upcalls: so, open the channel file, wait till its readable, then kick off svcgssd and hand off the file descriptor to it. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
