gistfile1.txt

# At the beginnging there is only rpool or the "root pool"

root@sunosfiler2:~# zpool status
  pool: rpool
 state: ONLINE
  scan: none requested
config:

        NAME    STATE     READ WRITE CKSUM
        rpool   ONLINE       0     0     0
          c7d0  ONLINE       0     0     0

errors: No known data errors



# Let attach the second disk to it 

You can get the device name from the format command

root@sunosfiler2:~# format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c7d0 <VBOX HAR-81c98028-fcb6a68-0001-8.00GB>
          /pci@0,0/pci-ide@1,1/ide@0/cmdk@0,0
       1. c8d0 <VBOX HAR-192bb6fc-81528b0-0001-8.00GB>
          /pci@0,0/pci-ide@1,1/ide@1/cmdk@0,0



root@sunosfiler2:~# zpool attach rpool c7d0 c8d0
Make sure to wait until resilver is done before rebooting.

# Now look at the pool

root@sunosfiler2:~# zpool status
  pool: rpool
 state: DEGRADED
status: One or more devices is currently being resilvered.  The pool will
        continue to function in a degraded state.
action: Wait for the resilver to complete.
        Run 'zpool status -v' to see device specific details.
  scan: resilver in progress since Sat May 10 09:34:15 2014  
    2.22G scanned out of 3.69G at 103M/s, 0h0m to go
    2.19G resilvered, 60.07% done
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       DEGRADED     0     0     0
          mirror-0  DEGRADED     0     0     0
            c7d0    ONLINE       0     0     0
            c8d0    DEGRADED     0     0     0  (resilvering)


Wait for it to resilver, otherwise it will complain that bootadm is already running

root@sunosfiler2:~# bootadm install-bootloader -P rpool
another instance of bootadm (pid 1668) is running

# Check that its done resilvering with zpool status, then run bootadm

root@sunosfiler2:~# bootadm install-bootloader -P rpool