Create a mirrored soft partition

• Setup the disks with slice 3 of the whole disk


• Create each half of the mirror

  metainit d79 1 1 c4t14d0s3
  metainit d69 1 1 c0t10d0s3



• Create the mirror with one half

  metainit d11 -m d69



• Attach the other half

  metattach d11 d79



• Create the soft partition in the mirror

  metainit d115 -p d11 68g