Hi, I failed to mount a nfs share with a bigger rsize/wsize (in my case, 512K). The biggest rsize/wsize I can get is only 256KB on my Ubuntu 9.10 server box. Can anyone give me some suggestions? root@d03:~# exportfs -v /tmp <world>(rw,wdelay,root_squash,no_subtree_check) root@d04:~# mount -t nfs -o wsize=524288,rsize=524288 d03:/tmp /mnt/nfs root@d04:~# nfsstat -m /mnt/nfs from d03:/tmp Flags: rw,relatime,vers=3,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=10.0.0.3,mountvers=3,mountproto=tcp,addr=10.0.0.3 root@d03:~# uname -a Linux d03 2.6.31-14-server #48-Ubuntu SMP Fri Oct 16 15:07:34 UTC 2009 x86_64 GNU/Linux root@d03:~# dpkg -l | grep nfs ii nfs-common 1:1.2.0-2ubuntu8 NFS support files common to client and serve ii nfs-kernel-server 1:1.2.0-2ubuntu8 support for NFS kernel server According to NFS-HOWTO, I have checked the kernel const NFSSVC_MAXBLKSIZE. It is 1M on 2.6.31. Any comments will be appreciated! Regards, Rui -- 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