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You can remove a disk
from a system and move it to another system if the disk is failing
or has failed. Before removing the disk from the current system,
you must: Stop all activity by applications to volumes
that are configured on the disk that is to be removed. Unmount file
systems and shut down databases that are configured on the volumes. Use the following command to stop the volumes: # vxvol stop volume1 volume2 ... Move the volumes to other disks or back up the volumes.
To move a volume, use vxdiskadm to mirror the volume on one or more
disks, then remove the original copy of the volume. If the volumes
are no longer needed, they can be removed instead of moved.
Before removing a disk, make sure any data on that disk has
either been moved to other disks or is no longer needed. Then remove
the disk using the vxdiskadm utility, as follows: Select menu item
2 (Remove a disk) from the vxdiskadm main menu. | | | |  | NOTE: You must disable the disk group before you can remove
the last disk in that group. | | | | |
At the following prompt, enter the disk name of the
disk to be removed: Remove a disk
Menu: VolumeManager/Disk/RemoveDisk
Use this operation to remove a disk from a disk group. Thisoperation takes a disk name as input. This is the same name that you gave to the disk when you added the disk to the diskgroup.
Enter disk name [<disk>,list,q,?] disk01 |
If there are any volumes on the disk, VxVM asks
you whether they should be evacuated from the disk. If you wish
to keep the volumes, answer y. Otherwise, answer n. At the following verification prompt, press Return to
continue: Requested operation is to remove disk disk01 from group rootdg.
Continue with operation? [y,n,q,?] (default: y) |
The vxdiskadm utility removes the disk from the disk group
and displays the following success message: Removal of disk disk01 is complete. |
You can now remove the disk or leave it on your system as
a replacement. At the following prompt, indicate whether you want to
remove other disks (y) or return to the vxdiskadm main menu (n): Remove another disk? [y,n,q,?] (default: n) |
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: The following volumes currently use part of disk disk02:
home usrvol
Subdisks must be moved from disk02 before it can be removed.
Move subdisks 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 ” and “Taking
Plexes Offline” 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 disk02: Enter disk name [<disk>,list,q,?] disk02
Requested operation is to remove disk disk02 from group rootdg.
Continue with operation? [y,n,q,?] (default: y) y
Removal of disk disk02 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,
press Return or enter n. |
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