[root@backup ~]#
[root@backup ~]# zpool status
  pool: backup0
 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: scrub stopped after 307425718563495972h25m with 9303873882360250368 errors on Sun Jan  0 00:00:00 1900
config:

        NAME        STATE     READ WRITE CKSUM
        backup0     ONLINE       0     0     0
          raidz2    ONLINE       0     0     0
            mfid0   ONLINE       0     0     0  6,69E repaired
            mfid1   ONLINE       0     0     0  10,3E repaired
            mfid11  ONLINE       0     0     0  13,8E repaired
            mfid8   ONLINE       0     0     0  449P repaired
            mfid10  ONLINE       0     0     0  3,13E repaired
            mfid2   ONLINE       0     0     0  12,1E repaired
            mfid3   ONLINE       0     0     0  15,1E repaired
            mfid4   ONLINE       0     0     0  8,00E repaired
            mfid5   ONLINE       0     0     0  11,3E repaired
            mfid6   ONLINE       0     0     0  14,1E repaired
            mfid9   ONLINE       0     0     0  3,06E repaired
            mfid7   ONLINE       0     0     0  2,69E repaired

errors: No known data errors