Removing a Disk from a Disk Group

A disk that contains no subdisks can be removed from its disk group with this command:

For example, to remove mydg02 from the disk group, mydg, use this command:

If the disk has subdisks on it when you try to remove it, the following error message is displayed:

Using the -k option allows you to remove the disk even if subdisks are present. For more information, see the vxdg(1M) manual page.

Once the disk has been removed from its disk group, you can (optionally) remove it from VxVM control completely, as follows:

For example, to remove c1t0d0 from VxVM control, use these commands:

You can remove a disk on which some subdisks are defined. For example, you can consolidate all the volumes onto one disk. If you use vxdiskadm to remove a disk, you can choose to move volumes off that disk. To do this, run vxdiskadm and select item 2 (Remove a disk) from the main menu.

If the disk is used by some subdisks, this message is displayed:

If you choose y, then all subdisks are moved off the disk, if possible. Some subdisks may not be movable. The most common reasons why a subdisk may not be movable are as follows:

• There is not enough space on the remaining disks.
• Plexes or striped subdisks cannot be allocated on different disks from existing plexes or striped subdisks in the volume.

If vxdiskadm cannot move some subdisks, you may need to remove some plexes from some disks to free more space before proceeding with the disk removal operation.