Example—Sharing a Logging Device

# umount /xyzfs
# metainit d64 -t c0t2d0s4 d10
d64: Trans is setup
(Edit the /etc/vfstab file so that the entry for /xyzfs references 
the transactional volume d64)
# mount /xyzfs
# metastat
...
d10: Logging device for d63 d64
...

This example shows the sharing of a log device (d10) defined as the log for a previous transactional volume, with a new transactional volume (d64). The file system to be set up as the master device is /xyzfs and is using slice /dev/dsk/c0t2d0s4. The metainit -t command specifies the configuration is a transactional volume. The /etc/vfstab file must be edited to change (or enter for the first time) the entry for the file system to reference the transactional volume. For example, the following line:

/dev/dsk/c0t2d0s4 /dev/rdsk/c0t2d0s4 /xyzfs ufs 2 yes -

should be changed to:

/dev/md/dsk/d64 /dev/md/rdsk/d64 /xyzfs ufs 2 yes -

The metastat command verifies that the log is being shared. Logging becomes effective for the file system when the system is rebooted.

Upon subsequent reboots, instead of checking the file system, the fsck command displays these messages for the two file systems:

/dev/md/rdsk/d63: is logging.
/dev/md/rdsk/d64: is logging.