zpool iostat -v                                                                                         
                  capacity     operations    bandwidth                                                     
pool           alloc   free   read  write   read  write                                                    
-------------  -----  -----  -----  -----  -----  -----
tank           5.42T  5.45T     30    164  3.14M  2.74M
  raidz2       5.42T  5.45T     30    138  3.14M  1.68M
    gpt/zfs0       -      -     13     18   305K   279K
    gpt/zfs1       -      -     13     17   306K   277K
    gpt/zfs2       -      -     13     17   308K   279K
    gpt/zfs3       -      -     13     18   306K   279K
    gpt/zfs4       -      -     14     17   312K   277K
    gpt/zfs5       -      -     14     17   313K   279K
    gpt/zfs6       -      -     13     18   305K   279K
    gpt/zfs7       -      -     13     17   305K   277K
    gpt/zfs8       -      -     13     17   308K   279K
    gpt/zfs9       -      -     13     18   306K   279K
    gpt/zfs10      -      -     14     17   312K   277K
    gpt/zfs11      -      -     14     17   313K   279K
logs               -      -      -      -      -      -
  ada0p1       19.2M  19.9G      0     25      0  1.06M
cache              -      -      -      -      -      -
  ada0p2        835G  76.8G     16     15  1.36M  1.58M
-------------  -----  -----  -----  -----  -----  -----