HP Veritas Volume Manager 5.0 -UX 11i v3 Destroying a disk group, Upgrading a disk group, Recovering a destroyed disk group, vxdg, dgid, destroy, c0t12d0, #vxdg import dgid, Destroying a disk group

208Creating and administering disk groups

Destroying a 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 diskgroupCaution: 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.

Recovering a destroyed disk group

If a disk group has been accidentally destroyed, you can recover it, provided that the disks that were in the disk group have not been modified or reused elsewhere.

To recover a destroyed disk group

1Enter the following command to find out the disk group ID (dgid) of one of the disks that was in the disk group:

#vxdisk -s list disk_access_name

The disk must be specified by its disk access name, such as c0t12d0. Examine the output from the command for a line similar to the following that specifies the disk group ID.

dgid: 963504895.1075.bass

2Use the disk group ID to import the disk group:#vxdg import dgid

Upgrading a disk group

Note: On some platforms, the first release of Veritas Volume Manager was 3.0 or 3.2.

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