VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Chapter 4, Creating and Administering Disk Groups
Disabling a Disk Group
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Disabling a Disk Group
To disable a disk group, unmount and stop any volumes in the disk group, and then use
the following command to deport it:
# vxdg deport diskgroup
Deporting a disk group does not actually remove the disk group. It disables use of the
disk group by the system. Disks in a deported disk group can be reused, reinitialized,
added to other disk groups, or imported for use on other systems. Use the vxdg import
command to re-enable access to the disk group.
Destroying a Disk Group
The vxdg command provides a destroy option that removes a disk group from the
system and frees the disks in that disk group for reinitialization:
# vxdg destroy diskgroup
Caution This command destroys all data on the disks.
When a disk group is destroyed, the disks that are released can be re-used in other disk
groups.
Upgrading a Disk Group
Note This information is not applicable for platforms whose first release was VERITAS
Volume Manager 3.0. However, it is applicable for subsequent releases.
Prior to the release of VERITAS Volume Manager 3.0, the disk group version was
automatically upgraded (if needed) when the disk group was imported.
From release 3.0 of VERITAS Volume Manager, the two operations of importing a disk
group and upgrading its version are separate. You can import a disk group from a
previous version and use it without upgrading it.
When you want to use new features, the disk group can be upgraded. The upgrade is an
explicit operation. Once the upgrade occurs, the disk group becomes incompatible with
earlier releases of VxVM that do not support the new version.
Before the imported disk group is upgraded, no changes are made to the disk group to
preventitsuse onthereleasefromwhich it wasimported until youexplicitlyupgrade it to
the current release.