Hello,

 

I had a 3-disk raidz2 pool. I wanted to increase throughput and available
storage so I added in another 2 disks into the pool with:

 

zpool add -f external c12t0d0p0

zpool add -f external c13t0d0p0 (it wouldn't work without -f, and I believe
that's because the fs was online)

 

I now notice that these new disks are not appearing in the raidz2 pool. I am
therefore thinking that my fs is simply striping across the raidz2 and c12
and c13. This would mean that the data on the c12 and c13 is at a high risk
of being lost.

 

1)      Am I right in my reasoning?

2)      Can I remove the new disks from the pool, and re-add them under the
raidz2 pool or will I break the fs in so doing?

3)      How can I check how much zfs data is written on the actual disk (say
c12)?

 

# zpool status

  pool: external

 state: ONLINE

 scrub: none requested

config:

 

        NAME          STATE     READ WRITE CKSUM

        external      ONLINE       0     0     0

          raidz2      ONLINE       0     0     0

            c5t0d0s0  ONLINE       0     0     0

            c6t0d0s0  ONLINE       0     0     0

            c7t0d0s0  ONLINE       0     0     0

          c12t0d0p0   ONLINE       0     0     0

          c13t0d0p0   ONLINE       0     0     0

 

errors: No known data errors

 

 

thanks

justin

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