Re: [PATCH 0/4] 2.6.21-rc7 NFS writes: fix a series of issues

Florin Iucha
2007-04-18T13:42:27Z

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On Wed, Apr 18, 2007 at 09:15:31AM -0400, Trond Myklebust wrote:
> There is only one request on the 'pending' queue. That would usually
> indicate that the connection to the server is down. Can you check using
> "netstat -t" whether or not there is a connection in the 'ESTABLISHED'
> state to the server? Please also repeat the command a couple of times in
> order to see if the socket/port number on the connection changes.

This is with your fifth patch on top of the previous four patches:

http://iucha.net/nfs/21-rc7-nfs3/big-copy

Again, it has memory, stack traces and rpc_debug.

The iostat 5 output:

http://iucha.net/nfs/21-rc7-nfs3/iostat

The netstat outputs are stable (not changed in 5 minutes):

http://iucha.net/nfs/21-rc7-nfs3/netstat-server :

tcp 1 0 hermes.iucha.org:nfs zeus.iucha.org:799 CLOSE_WAIT
tcp 0 0 hermes.iucha.org:nfs zeus.iucha.org:976 ESTABLISHED

http://iucha.net/nfs/21-rc7-nfs3/netstat-client

Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 zeus.iucha.org:976 hermes.iucha.org:nfs ESTABLISHED
tcp 0 0 zeus.iucha.org:ssh hermes.iucha.org:56880 ESTABLISHED
tcp 0 0 zeus.iucha.org:ssh hermes.iucha.org:45176 ESTABLISHED

Could the port in CLOSE_WAIT state be the culprit? (FWIW
the server has been up for 38 days and subjected to
this nfs test quite a bit without showing any stress).

Regards,
florin

--
Bruce Schneier expects the Spanish Inquisition.
http://geekz.co.uk/schneierfacts/fact/163

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