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

Trond Myklebust
2009-01-10T16:00:33Z

On Sat, 2009-01-10 at 11:24 +0100, Kasparek Tomas wrote:
> > 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.
>
> Will try, but with static mount there is one stable TCP connection between
> client and server so this problem can not happen at all isn't it?

It can. The client will automatically disconnect when the mountpoint has
not used for 5 minutes.

As for amd, I know that older versions used to set absolutely insane
timeouts for tcp connections. They'd use the same defaults as UDP, IOW
timeo=7, retrans=3 ('cat /proc/mounts' should be able to tell you if
that's the case for your setup).

--
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@netapp.com