What's going onto the disk?

On our thumpers, `iostat -nxz 5` gives a good picture of what's happening on each of the disks, and `zpool iostat 5` gives a good overall picture of how fast things are going at the moment, but neither of these break the picture down into "Who's writing?"

A Solution:

# fsstat -T u `zfs list -H -o mountpoint -t filesystem` 5
1200435752
    0     0     0     0     0      0     0     0     0     0     0 /uscisbds001
    0     0     0   106     0      0     0     0     0    53  217K /uscisbds001/esx3
    0     0     0     0     0      0     0     0     0     0     0 /uscisbds001/esxpatches
    0     0     0     2     0      0     0     0     0     0     0 /uscisbds001/isos
    0     0     0     0     0      0     0     0     0     0     0 /uscisbds001/nfs
    0     0     0     0     0      0     0     0     0     0     0 /uscisbds001/saperisrv1
    0     0     0     0     0      0     0     0     0     0     0 /uscisbds001/saperisrv2
    0     0     0     2     0      0     0     0     0     0     0 /uscisbds001/templates
    0     0     0 1.56K     0      0     0     0     0   654 15.8M /uscisbds001/temprestore

I can see that somebody's writing a buncha data to temprestore, and a little bit is happening in the esx3 directory.

--Joe