On Fri, Jul 04, 2014 at 08:14:49AM -0400, Jeff Layton wrote: > On Thu, 3 Jul 2014 18:31:15 -0400 > Jeff Layton <jeff.layton@xxxxxxxxxxxxxxx> wrote: > > > On Thu, 3 Jul 2014 17:35:26 -0400 > > "J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote: > > > > > On Thu, Jul 03, 2014 at 04:32:59PM -0400, J. Bruce Fields wrote: > > > > On Mon, Jun 30, 2014 at 11:48:44AM -0400, Jeff Layton wrote: > > > > > We want to use the nfsd4_compound_state to cache the nfs4_client in > > > > > order to optimise away extra lookups of the clid. > > > > > > > > > > In the v4.0 case, we use this to ensure that we only have to look up the > > > > > client at most once per compound for each call into lookup_clientid. For > > > > > v4.1+ we set the pointer in the cstate during SEQUENCE processing so we > > > > > should never need to do a search for it. > > > > > > > > The connectathon locking test is failing for me in the nfsv4/krb5i case > > > > as of this commit. > > > > > > > > Which makes no sense to me whatsoever, so it's entirely possible this is > > > > some unrelated problem on my side. I'll let you know when I've figured > > > > out anything more. > > > > > > It's intermittent. > > > > > > I've reproduced it on the previous commit so I know at least that this > > > one isn't at fault. > > > > > > I doubt it's really dependent on krb5i, at most that's probably just > > > making it more likely to reproduce. > > > > > > --b. > > > > Bruce, > > > > Does this patch help? I suspect this is where the bug crept in, but I'm > > unclear on why it would be intermittent... > > > > FWIW, this all gets cleaned up in a later patch that changes how the > > refcounting on lock and openowners works. > > > > I was finally able to reproduce this after a running the cthon lock > tests in a loop, with krb5i. With the patch that I sent earlier, I was > able to run 100 iterations of it without a failure, so I think that was > the bug. Thanks! That seems to be holding up for me too. I'll continue slowly applying your patches to for-3.17. --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
