Restoring RPOOL of EFI label from snapshot in Solaris 11 X86

Hi Friends

Facing issue in restore rpool of EFI label from snapshot in solaris 11.3 x86.

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zpool create -fo altroot=/var/tmp/rpool -o cachefile=/etc/zfs/zpool.cache -m legacy rpool c2t0d0

root@solaris:/mnt/sys# zpool status

  pool: rpool

state: ONLINE

  scan: none requested

config:

        NAME      STATE     READ WRITE CKSUM

        rpool     ONLINE       0     0     0

          c2t0d0  ONLINE       0     0     0

errors: No known data errors

oot@solaris:/mnt/sys# format c2t0d0

selecting c2t0d0

[disk formatted]

/dev/dsk/c2t0d0s0 is part of active ZFS pool rpool. Please see zpool(1M).

FORMAT MENU:

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