Creating a ZFS Root Pool

You can install and boot from a ZFS root file system. Review the following root pool configuration information:

• Disks used for the root pool must have a VTOC (SMI) label, and the pool must be created with disk slices.

• The root pool must be created as a mirrored configuration or as a single-disk configuration. You cannot add additional disks to create multiple mirrored top-level virtual devices by using the zpool add command, but you can expand a mirrored virtual device by using the zpool attach command.

• A RAID-Z or a striped configuration is not supported.

• The root pool cannot have a separate log device.

• If you attempt to use an unsupported configuration for a root pool, you see messages similar to the following:

  ERROR: ZFS pool <pool-name> does not support boot environments

  # zpool add -f rpool log c0t6d0s0 cannot add to 'rpool': root pool can not have multiple vdevs or separate logs

For more information about installing and booting a ZFS root file system, see Chapter 5, Installing and Booting an Oracle Solaris ZFS Root File System.