On Wed, Apr 18, 2007 at 10:11:46AM -0400, Trond Myklebust wrote: > Do you have a copy of wireshark or ethereal on hand? If so, could you > take a look at whether or not any NFS traffic is going between the > client and server once the hang happens?
I used the following command tcpdump -w nfs-traffic -i eth0 -vv -tt dst port nfs to capture http://iucha.net/nfs/21-rc7-nfs4/nfs-traffic.bz2 I started the capture before starting the copy and left it to run for a few minutes after the traffic slowed to a crawl. The iostat and vmstat are at: http://iucha.net/nfs/21-rc7-nfs4/iostat http://iucha.net/nfs/21-rc7-nfs4/vmstat It seems that my original problem report had a big mistake! There is no hang, but at some point the write slows down to a trickle (from 40,000 blocks/s to 22 blocks/s) as can be seen from the iostat log. Regards, florin -- Bruce Schneier expects the Spanish Inquisition. http://geekz.co.uk/schneierfacts/fact/163
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