Why does 'iostat -n' reports incorrect NFS client stats ?
Issue
- Why does 'iostat -n' reports incorrect NFS client stats ?
- While copying a file from nfs mount to local disk , iostat -n shows exactly the same values for rops/s and wops/s . Ideally, wops/s should be zero and rops/s should report the actual reads.
Output of ' iostat -kxn 2 | x.x.x.x ' , where x.x.x.x is the IP address of NFS server :
Device: rkB_nor/s wkB_nor/s rkB_dir/s wkB_dir/s rkB_svr/s wkB_svr/s rops/s wops/s
x.x.x.x:/test 0.00 0.00 0.00 0.00 0.00 0.00 0.42 0.42
x.x.x.x:/test 0.00 0.00 0.00 0.00 0.00 0.00 1.27 1.27
Environment
- Red Hat Enterprise Linux 5
- sysstat-7.0.2-3.el5_5 or lower versions.
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