Example—Creating a Transactional Volume for /usr

# metainit -f d20 -t c0t3d0s6 c1t2d0s1
d20: Trans is setup
(Edit the /etc/vfstab file so that the file system references 
the transactional volume)
# reboot

Slice /dev/dsk/c0t3d0s6 contains the /usr file system. The slice that will contain the log device is /dev/dsk/c1t2d0s1. Because /usr cannot be unmounted, the metainit command is run with the -f option to force the creation of the transactional volume, d20. Next, the line in the /etc/vfstab file that mounts the file system must be changed to reference the transactional volume. For example, the following line:

/dev/dsk/c0t3d0s6 /dev/rdsk/c0t3d0s6 /usr ufs 1 no -

should be changed to:

/dev/md/dsk/d20 /dev/md/rdsk/d20 /usr ufs 1 no -

Logging becomes effective for the file system when the system is rebooted.