Monitoring performance of ZFS file system using zfs iostat

ZFS is built-in with a lot of monitoring features. We would be covering iostat here specifically.

The command syntax is pretty simple and straight forward and much close to the older iostat command. Here's how it looks like:

root@opensolaris:~# zpool iostat


root@opensolaris:~# zpool iostat zpooldata 1 5

capacity operations bandwidth

pool used avail read write read write

---------- ----- ----- ----- ----- ----- -----

zpooldata 222K 7.06G 0 0 2.47K 1.45K

zpooldata 222K 7.06G 0 0 0 0

zpooldata 222K 7.06G 0 0 0 0

zpooldata 222K 7.06G 0 0 0 0

zpooldata 222K 7.06G 0 0 0 0

root@opensolaris:~#