Verify that the filesystem being referenced in fstab is indeed a UFS filesystem. This avoids confusion with nullfs and unionfs filesystems which reference the root of a UFS filesystem as a target.
Verify that the filesystem being referenced in fstab is indeed a UFS
filesystem. This avoids confusion with nullfs and unionfs filesystems
which reference the root of a UFS filesystem as a target.

PR:		116849
Approved by:	kib

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase