Re: [PATCH 0/3] NFS regression in 2.6.26?, "task blocked for more than 120 seconds"

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On Fri, 2009-01-09 at 15:56 +0100, Kasparek Tomas wrote:
> On Tue, Dec 23, 2008 at 05:34:07PM -0500, Trond Myklebust wrote:
> > On Tue, 2008-12-16 at 13:05 +0100, Kasparek Tomas wrote:
> > > Hm, not happy to say that but it still does not work after some time. Now
> > > the problem is opposite there are no connections to the server according to
> > > netstat on client, just time to time there is
> > > 
> > > pcnlp1.fit.vutbr.cz.15234 > kazi.fit.vutbr.cz.nfs: 40 null
> > > kazi.fit.vutbr.cz.nfs > pcnlp1.fit.vutbr.cz.15234: reply ok 24 null
> > > 
> > > (kazi is server). Will try to investigate more details.
> > 
> > OK. Here is one more try. I've tightened up some locking issues with the
> > previous patch.
> 
> Did tried this new version. Applied it to 2.6.27.10, but the behaviour is
> the same like with the first version - when old mounts are removed by amd
> new one are not created, fter a while, there are no sockets on the client
> and just CLOSED sockets on server. Client is issuing null RPC checks each
> 30sec and they are OK, but no other communication between client and server
> takes place.
> 
> 15:45:41.238796 IP pcnlp1.897490 > kazi.nfs: 40 null
> 15:45:41.239009 IP kazi.nfs > pcnlp1.897490: reply ok 24 null
> 
> 
> I will try to get more info, but if you have some idea where to look or
> what to try, it will be helpful.
> 
> Thanks for your help

Wait. You're using amd when testing? Could you please rather retry using
just a static mount? amd has historically had way too many bugs
(particularly w.r.t. tcp) to be considered a reliable test.

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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