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I have a nfs mount: salusa:/git/ mounted on /net/salusa/git with fstype nfs4 statvers=1.0 opts: rw,vers=4,rsize=1048576,wsize=1048576,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,proto=tcp6,port=0,timeo=600,retrans=2,sec=sys,clientaddr=2001:470:8:d63:2e0:4dff:febf:6ba,minorversion=0,local_lock=none age: 4705 ...(etc)...but when I run nfsiostat, it fails to find it: $ nfsiostat No NFS mount points were found This problem also exists in f15, so it's probably been an issue for a little while.
$ rpm -q nfs-utils nfs-utils-1.2.4-0.fc15.x86_64
I can replicate your results with an older version called iostat-ms. [cel@seurat bin]$ iostat-ms No NFS mount points were found [cel@seurat bin]$ mount rootfs on / type rootfs (rw) /proc on /proc type proc (rw,relatime) /sys on /sys type sysfs (rw,relatime) udev on /dev type devtmpfs (rw,relatime,size=502996k,nr_inodes=125749,mode=755) devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /dev/shm type tmpfs (rw,relatime) /dev/sda3 on / type xfs (rw,relatime,attr2,noquota) /proc/bus/usb on /proc/bus/usb type usbfs (rw,relatime) /dev/sda1 on /boot type ext4 (rw,relatime,barrier=1,data=ordered) tmpfs on /tmp type tmpfs (rw,relatime) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime) /etc/auto.misc on /misc type autofs (rw,relatime,fd=7,pgrp=1733,timeout=300,minproto=5,maxproto=5,indirect) -hosts on /net type autofs (rw,relatime,fd=13,pgrp=1733,timeout=300,minproto=5,maxproto=5,indirect) gvfs-fuse-daemon on /home/cel/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,relatime,user_id=1046,group_id=100) -hosts on /net/klimt.1015granger.net/.domainroot-1015granger.net type autofs (rw,relatime,fd=13,pgrp=1733,timeout=300,minproto=5,maxproto=5,offset) -hosts on /net/klimt.1015granger.net/share type autofs (rw,relatime,fd=13,pgrp=1733,timeout=300,minproto=5,maxproto=5,offset) klimt.1015granger.net:/share/ on /net/klimt.1015granger.net/share type nfs4 (rw,nosuid,nodev,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.59,minorversion=0,addr=192.168.1.55) klimt.1015granger.net:/share/home on /net/klimt.1015granger.net/share/home type nfs4 (rw,nosuid,nodev,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.59,minorversion=0,addr=192.168.1.55) klimt.1015granger.net:/share/multi on /net/klimt.1015granger.net/share/multi type nfs4 (rw,nosuid,nodev,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.59,minorversion=0,addr=192.168.1.55) klimt.1015granger.net:/share/single on /net/klimt.1015granger.net/share/single type nfs4 (rw,nosuid,nodev,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.59,minorversion=0,addr=192.168.1.55) klimt.1015granger.net:/share/test on /net/klimt.1015granger.net/share/test type nfs4 (rw,nosuid,nodev,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.59,minorversion=0,addr=192.168.1.55) [cel@seurat bin]$ iostat-ms /net/klimt.1015granger.net Traceback (most recent call last): File "/home/cel/bin/iostat-ms", line 537, in <module> iostat_command(prog) File "/home/cel/bin/iostat-ms", line 475, in iostat_command interval = int(arg) ValueError: invalid literal for int() with base 10: '/net/klimt.1015granger.net' [cel@seurat bin]$ iostat-ms /net/klimt.1015granger.net/share No NFS mount points were found [cel@seurat bin]$ iostat-ms klimt.1015granger.net:/share Traceback (most recent call last): File "/home/cel/bin/iostat-ms", line 537, in <module> iostat_command(prog) File "/home/cel/bin/iostat-ms", line 475, in iostat_command interval = int(arg) ValueError: invalid literal for int() with base 10: 'klimt.1015granger.net:/share' [cel@seurat bin]$
I cannot reproduce your results with the most recent version of nfs-iostat.py on Fedora 14; it works as expected when no argument is specified. Maybe we don't have the a full reproducer yet.