HP Veritas Volume Manager 5.0 -UX 11i v3 manual Removing a volume, Moving volumes from a VM disk

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Administering volumes

Removing a volume

For example, to set the policy for vol01 to read preferentially from the plex vol01-02, use the following command:

#vxvol -g mydg rdpol prefer vol01 vol01-02

To set the read policy to select, use the following command:

#vxvol [-g diskgroup] rdpol select volume

For more information about how read policies affect performance, see “Volume read policies” on page 466.

Removing a volume

Once a volume is no longer necessary (it is inactive and its contents have been archived, for example), it is possible to remove the volume and free up the disk space for other uses.

To stop all activity on a volume before removing it

1Remove all references to the volume by application programs, including shells, that are running on the system.

2If the volume is mounted as a file system, unmount it with this command:

#umount /dev/vx/dsk/diskgroup/volume

3If the volume is listed in the /etc/fstab file, remove its entry by editing this file. Refer to your operating system documentation for more information about the format of this file and how you can modify it.

4Stop all activity by VxVM on the volume with the command:

#vxvol [-g diskgroup] stop volume

After following these steps, remove the volume with the vxassist command:

#vxassist [-g diskgroup] remove volume volume

Alternatively, you can use the vxedit command to remove a volume:

#vxedit [-g diskgroup] [-r] [-f] rm volume

The -roption to vxedit indicates recursive removal. This removes all plexes associated with the volume and all subdisks associated with those plexes. The -foption to vxedit forces removal. This is necessary if the volume is still enabled.

Moving volumes from a VM disk

Before you disable or remove a disk, you can move the data from that disk to other disks on the system that have sufficient space.