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|Oracle Solaris 10 1/13 Installation Guide: Live Upgrade and Upgrade Planning Oracle Solaris 10 1/13 Information Library|
Starting with the Oracle Solaris 10 8/11 release, the ZFS file system has the following installation enhancements:
You can use the Live Upgrade luupgrade command to install a flash archive to a ZFS rooted alternate boot environment.
Unlike the ZFS flash archives in the previous releases, a flash archive created on a ZFS root master system does not contain all the existing boot environments. Instead, the archive contains only the active ZFS boot environment. The archive does not include those datasets that are excluded explicitly with the -D option of the lucreate command and the user data present in the top-level pool dataset. The swap and dump volumes are not included into the archive but are created when the flash archive is installed.
For more information about ZFS flash archives creation and installation , refer to Installing a ZFS Root File System (Oracle Solaris Flash Archive Installation) in Oracle Solaris ZFS Administration Guide.
You can use the -D option of the Live Upgrade lucreate command to create a separate dataset for /var when you migrate a UFS root file system to a ZFS root file system.
However, you cannot use the -D option to specify a separate dataset for any other OS critical file system. The /var file system is the only OS critical file system that is allowed to be a separate dataset in a ZFS root boot environment. The -D option is allowed only when the source boot environment has a UFS root and the target boot environment being created has a ZFS root.
For more information, refer to Migrating From a UFS Root (/) File System to ZFS Root Pool.
For detailed instructions and limitations, see Chapter 4, Installing and Booting an Oracle Solaris ZFS Root File System, in Oracle Solaris ZFS Administration Guide.