Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

109Administering disks
Removing a disk from VxVM control
Removing a disk with subdisks
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 the vxdiskadm program to remove
a disk, you can choose to move volumes off that disk. To do this, run the vxdiskadm
program and select item 2 (Remove a disk) from the main menu.
If the disk is used by some subdisks, the following message is displayed:
VxVM ERROR V-5-2-369 The following volumes currently use part of
disk mydg02:
home usrvol
Volumes must be moved from mydg02 before it can be removed.
Move volumes to other disks? [y,n,q,?] (default: n)
If you choose y, then all subdisks are moved off the disk, if possible. Some subdisks are
not movable. A subdisk may not be movable for one of the following reasons:
■ There is not enough space on the remaining disks in the subdisk’s disk group.
■ Plexes or striped subdisks cannot be allocated on different disks from existing plexes
or striped subdisks in the volume.
If the vxdiskadm program cannot move some subdisks, remove some plexes from some
disks to free more space before proceeding with the disk removal operation. See
“Removing a volume” on page 282 and “Taking plexes offline” on page 222 for
information on how to remove volumes and plexes.
Removing a disk with no subdisks
To remove a disk that contains no subdisks from its disk group, run the vxdiskadm
program and select item 2 (Remove a disk) from the main menu, and respond to the
prompts as shown in this example to remove mydg02:
Enter disk name [<disk>,list,q,?] mydg02
VxVM NOTICE V-5-2-284 Requested operation is to remove disk
mydg02 from group mydg.
Continue with operation? [y,n,q,?] (default: y) y
VxVM INFO V-5-2-268 Removal of disk mydg02 is complete.
Clobber disk headers? [y,n,q,?] (default: n) y
Enter y to remove the disk completely from VxVM control. If you do not want to remove
the disk completely from VxVM control, enter n.
Removing a disk from VxVM control
After removing a disk from a disk group, you can permanently remove it from Veritas
Volume Manager control by running the
vxdiskunsetup command: