On localSYS, your SPARC based server, you back up the root file system with recursive...

How to Recreate a ZFS Root Pool and Restore Root Pool Snapshots

In this scenario, assume the following conditions:

* ZFS root pool cannot be recovered

* ZFS root pool snapshots are stored on a remote system and are shared over NFS

* The system is booted from an equivalent Solaris release to the root pool version so that the Solaris release and the pool version match. Otherwise, you will need to add the -o version=version-number property option and value when you recreate the root pool in step 4 below.

All steps below are performed on the local system.

1.

Boot from CD/DVD or the network.

On a SPARC based system, select one of the following boot methods:

ok boot net -s

ok boot cdrom -s

If you don't use -s option, you'll need to exit the installation program.

2.

Mount the remote snapshot dataset.

For example:

# mount -F nfs remote-system:/rpool/snaps /mnt

3.

Recreate the root pool.

For example:

# zpool create -f -o failmode=continue -R /a -m legacy -o cachefile=/etc/zfs/zpool.cache rpool c1t0d0s0

4.

Restore the root pool snapshots.

This step might take some time. For example:

# cat /mnt/rpool.0311 | zfs receive -Fdu rpool

Using the -u option means that the restored archive is not mounted when the zfs receive operation completes.

5.

Set the bootfs property on the root pool BE.

For example:

# zpool set bootfs=rpool/ROOT/osolBE rpool

6.

Install the boot blocks on the new disk.

On a SPARC based system:

# installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk /dev/rdsk/c1t0d0s0