On Tue, June 9, 2009 10:20 am, Simon Kirby wrote: > Hello! > > With 2.6.28.10 and 2.6.29.4 knfsd after a few hours of heavy concurrent > NFSv3 write loads (migration of Maildirs with rsync), we are seeing this > error: > > kernel: RPC: multiple fragments per record not supported > > ...followed by knfsd immediately ignoring all further requests. > Restarting knfsd (/etc/init.d/nfs-kernel-server restart) seems to make > it start responding and work as normal again. > > "ps -eo pid,stat,args,wchan" during the event shows all nfsd processes > sleeping in "svc_recv": > > 22714 S< [nfsd] svc_recv > > This client with the high write load is an old 2.6.17 kernel, mounting > the server with > rw,nolock,hard,intr,timeo=9,retrans=3,rsize=8192,wsize=8192 > (jumbo frames are enabled). > > Is this any sort of known issue? I'm trying to reproduce it in a testing > environment. Yes. Known issue. The data stream from the client gets corrupted. Fix is http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e0ab53deaa91293a7958d63d5a2cf4c5645ad6f0 which is in 2.6.18 NeilBrown -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
