root@host#metainit -f d13 1 1 c0t0d0s3
d13: Concat/Stripe is setup
root@host#metainit d3 -m d13
d3: Mirror is setup
root@host#metainit -f d23 1 1 c0t1d0s3
d23: Concat/Stripe is setup
root@host#metattach d3 d23
d3: submirror d23 is attached
root@host#metastat -p