Oracle Solaris ZFS Administration Guide

New zfs receive -F Option

Solaris 10 8/07 Release: In this Solaris release, you can use the new -F option to the zfs receive command to force a rollback of the file system to the most recent snapshot before the receive is initiated. Using this option might be necessary when the file system is modified after a rollback occurs but before the receive is initiated.

For more information, see Receiving a ZFS Snapshot.