Air Cleaner User Manual

The following information should be helpful for making the logical volume
inactive based on its type:
jfs This is the default logical volume. jfs indicates the logical
volume is used for a journaled filesystem. If this is the case, refer
to the instructions above for Filesystems. Otherwise, an
unknown process on the system has the logical volume open.
jfslog This is a logical volume used by filesystems in the volume
group. This logical volume is made inactive automatically when
all of the filesystems that reference it are unmounted. View the
/etc/filesystems file to see which filesystems reference which
jfslog logical volumes.
paging This logical volume is a paging space. An active paging space
cannot be disabled as long as the system is running. Instead, you
must deactivate the paging space for the next system boot using
the command chps -an LVname. After doing so, the system
must be rebooted for the paging space to be inactive.
dump This logical volume is used for a system crash dump and is
referred to as the dump device. You must disable the system
dump to make this logical volume inactive. To do so, execute the
command sysdumpdev -Pp /dev/sysdumpnull and sysdumpdev
-Ps /dev/sysdumpnull.
Any other logical volume types are user-defined and have no specific meaning to
the system.
If you are removing the entire volume group containing the logical volumes, the
logical volumes are removed along with the volume group information. If,
however, you are only removing the logical volumes, use the rmlv command to
remove the logical volumes once they are inactive.
Recreating Volume Groups, Logical Volumes, and Filesystems
If you experience a hardware failure that requires you to recreate a volume group,
logical volume, or filesystem, you can use either the system or volume group
backup. A filesystem backup can also be used to recreate filesystems while a
logical volume backup can be used to recreate logical volumes. These “containers”
must be recreated to provide a place to restore the data.
You can recreate one or more volume groups, logical volumes or filesystems as
they are defined on the backup, or you can optionally change the volume group,
logical volume or filesystem characteristics, including the disk location, filesystem
and logical volume sizes, or any other attribute.
Note: The containers you want to recreate must have information pertaining to
them on the backup media. A volume group backup of only the vg00
volume group cannot be used to recreate any other volume group. However,
this backup can be used to recreate single logical volumes or filesystems that
were contained within volume group vg00. The system backup, however,
always contains information about all volume groups, logical volumes, and
filesystems, even if not all volume group data was included on the backup.
10-2 IBM Tivoli Storage Manager for System Backup and Recovery: Installation and User’s Guide