Importing the old data pool

malachi@serveris:~# zpool import
  pool: data
    id: 16202109509961920001
 state: ONLINE
status: The pool is formatted using an older on-disk version.
action: The pool can be imported using its name or numeric identifier, though
    some features will not be available without an explicit 'zpool upgrade'.
config:

    data        ONLINE
      raidz2    ONLINE
        c6t0d0  ONLINE
        c6t1d0  ONLINE
        c7t0d0  ONLINE
        c7t1d0  ONLINE
        c8t0d0  ONLINE

malachi@serveris:~# zpool import data
cannot import 'data': pool may be in use from other system
use '-f' to import anyway
malachi@serveris:~# zpool import -f data
malachi@serveris:~# zpool status
  pool: data
 state: ONLINE
status: The pool is formatted using an older on-disk format.  The pool can
    still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'.  Once this is done, the
    pool will no longer be accessible on older software versions.
 scrub: none requested
config:

    NAME        STATE     READ WRITE CKSUM
    data        ONLINE       0     0     0
      raidz2    ONLINE       0     0     0
        c6t0d0  ONLINE       0     0     0
        c6t1d0  ONLINE       0     0     0
        c7t0d0  ONLINE       0     0     0
        c7t1d0  ONLINE       0     0     0
        c8t0d0  ONLINE       0     0     0

errors: No known data errors

malachi@serveris:~# zpool upgrade data
This system is currently running ZFS pool version 10.

Successfully upgraded 'data' from version 6 to version 10

malachi@serveris:~# zpool status
  pool: data
 state: ONLINE
 scrub: none requested
config:

    NAME        STATE     READ WRITE CKSUM
    data        ONLINE       0     0     0
      raidz2    ONLINE       0     0     0
        c6t0d0  ONLINE       0     0     0
        c6t1d0  ONLINE       0     0     0
        c7t0d0  ONLINE       0     0     0
        c7t1d0  ONLINE       0     0     0
        c8t0d0  ONLINE       0     0     0

errors: No known data errors
malachi@serveris:~# df -k
Filesystem           1K-blocks      Used Available Use% Mounted on
data                 713260393        55 713260339   1% /data

[trimmed...] 

malachi@serveris:~# cd /data