If you are upgrading Solaris only, you must remove and reinstall SFCFS from the alternate boot environment prior to completing the Live Upgrade. You must remove and reinstall because SFCFS has kernel components that are specific to Solaris operating system versions. The correct version of the SFCFS packages must be installed.
Upgrading Solaris using Live Upgrade involves the following steps:
Creating a new boot environment on the alternate boot disk
See Creating a new boot environment on the alternate boot disk.
Removing and reinstalling Veritas Storage Foundation Cluster File System 5.1 on the alternate boot environment, in one of the following ways:
Switching the alternate boot environment to be the new primary