View the Exhibit and review the zpool and ZFS configuration information from your system. Identify the correct procedure for breaking the /prod_data mirror, removing c4t0d0 and c4t2d0, and making…

Question

Exhibit

Options

• Azpool split pool1 pool2 c4t0d0 c4t2d0
• Bzpool detach pool1 pool2
• Czpool split pool1/prod_data -n pool2/dev_data
• Dzpool split pool1 pool2 c4t0d0 c4t2d0

• A
  81% (30)
• B
  3% (1)
• C
  11% (4)
• D
  5% (2)

Explanation

zpool split pool1 pool2 c4t0d0 c4t2d0 is correct because zpool split is the only command designed to detach one side of a mirror and reconstitute it as an independent pool - specifying the source pool (pool1), the new pool name (pool2), and the exact vdevs to pull creates pool2 with those devices intact, which can then be imported and mounted at /dev_data.

Option B (zpool detach pool1 pool2) is wrong on two counts: zpool detach removes a single device from a mirror (it doesn't create a new pool), and its second argument must be a device, not a pool name.

Option C is wrong because zpool split operates on pools, not ZFS datasets or mount paths - you cannot pass pool1/prod_data or pool2/dev_data as arguments, and -n is the dry-run flag, not a rename or mount option.

Option D appears identical to A as written (likely a transcription artifact in the exhibit); in the original exam, D probably omits the vdev arguments, which would cause the split to arbitrarily assign devices rather than guaranteeing c4t0d0 and c4t2d0 land in the new pool.

Memory tip: Think of zpool split like splitting a cell - zpool split <parent> <child> [devices to take]. The parent keeps the devices you don't list; the child takes the ones you do.

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