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From: "matteo.debiaggi" <matteo.debiaggi@charta.it>
To: "Talpey, Thomas" <Thomas.Talpey@netapp.com>
Cc: Neil Brown <neilb@suse.de>, nfs@lists.sourceforge.net
Subject: Re: Lock problem.
Date: Thu, 11 Oct 2007 16:24:38 +0200	[thread overview]
Message-ID: <470E3226.4080706@charta.it> (raw)
In-Reply-To: <EXNANE011B6gVs1tIzm000006ba@exnane01.hq.netapp.com>

The 2 machines are in a local net without any kind of firewalls ..
But the problem "seems" to be solved :
I think the problem is in lockd daemon.
Explained 30 sec waiting :  2 locks request with default timeout 15 sec..
And then  why lock  not gained on server? Maybe due to max concurrent 
threads asking fo lock to lockd daemon where the default is 20!My test 
implyies 2000 lines writing on file with a pause of 10000 us between 
write attempt and reading every 100ms.So 20 lock requests  queued are a 
possible context.
I restarted lockd daemon with 100  as  maximum contemporary lock 
requests from threads and test goes fine.
Thanks to everybody.
I hope not to face  this problem again after this modify.
Matteo.

p.s. i can't get nlm decoding from tcpdump..

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  reply	other threads:[~2007-10-11 14:24 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-11  8:56 Lock problem matteo.debiaggi
2007-10-11 10:08 ` Neil Brown
2007-10-11 13:07   ` matteo.debiaggi
2007-10-11 13:50     ` Talpey, Thomas
2007-10-11 14:24       ` matteo.debiaggi [this message]
2007-10-11 14:37         ` Talpey, Thomas
2007-10-11 15:23           ` matteo.debiaggi

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