On Fri, Mar 23, 2012 at 03:20:21PM +0000, Myklebust, Trond wrote: > On Fri, 2012-03-23 at 09:31 -0400, J. Bruce Fields wrote: > > On Fri, Mar 23, 2012 at 08:12:08AM -0400, J. Bruce Fields wrote: > > > On Wed, Mar 21, 2012 at 09:52:04AM -0400, Jeff Layton wrote: > > > > Add a new top-level dir in rpc_pipefs to hold the pipe for the clientid > > > > upcall. > > > > > > After applying this patch, my tests consistently hang. The hang happens > > > in excltest (of the special connectaton tests), over nfs4.1 and krb5. > > > Looking at the wire traffic, I'm seeing DELAY returned from a setattr > > > for mode on a newly-created (with EXCLUSIVE4_1) file. That open got a > > > delegation, so presumably that's what's causing the DELAY, though I'm > > > not seeing the server send a recall. That could be a krb5 bug. > > > > > > Whatever bug there is here, it's hard to tell why this patch in > > > particular would make it more likely. > > > > > > So, still investigating! > > > > Reproduceable by: > > > > mount -osec=krb5,minorversion=1 server:/export/ /mnt/ > > cp cthon04/special/excltest /mnt/ > > cd /mnt > > ./excltest > > Umm... When would you ever get a DELAY in the above scenario? I can see > getting an NFS4ERR_OPENMODE, but not DELAY. There's a setattr for mode right after the open. Is that unexpected? The server doesn't really have to recall the delegation in that case (it only needs to recall *other* clients' delegations) but I don't think it's wrong to. --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
