Listing Pool-Wide I/O Statistics
zpool iostat command displays the accumulated statistics since boot for all pools on the system.
# zpool iostat
-v option gives you more detail of the pool
root@ConfigNotes# zpool iostat -v
capacity operations bandwidth
pool alloc free read write read write
------------------- ----- ----- ----- ----- ----- -----
mainpool 189G 1.56T 27 157 199K 5.38M
mirror 189G 1.56T 27 157 199K 5.38M
ata-SAMSUNG_SSD1 - - 13 79 99.8K 2.69M
ata-SAMSUNG_SSD2 - - 13 78 99.4K 2.69M
------------------- ----- ----- ----- ----- ----- -----