chlv command

Purpose

Changes the characteristics of a logical volume.

Syntax

To change the name of a logical volume:

chlv { -lv NewLogicalVolumeName | -bbr value}LogicalVolume

Description

The chlv command changes the characteristics of a logical volume according to the command flags. The LogicalVolume parameter can be a logical volume name or logical volume ID. The chlv command can rename and set the bad-block relocation (BBR) policy. Changing the name of a logical volume and setting the bad-block relocation policy are the only supported options.

Note: A logical volume that has been assigned as a backing device or as a paging space device cannot be renamed. Although supported, it is not recommended that the bad-block relocation policy be enabled on the Virtual I/O Server for Virtual Small Computer System Interface (VSCSI) devices. Instead, the bad-block relocation policy needs to be enabled for VSCSI devices on the client. Doing so ensures that the bad-block relocation policy is enabled for VSCSI devices that use logical volumes and physical volumes as storage and provides better performance. Also, enabling the bad-block relocation policy is recommended for paging spaces used by Active Memory Sharing.

Flags

-lv	Specifies the logical volume.
-bbr	Sets the bad-block relocation policy. The value can be either: yes (Causes bad-block relocation to occur.) no (Prevents bad block relocation from occurring.)

Examples

To change the logical volume name from oldlv to newlv, type:
```
chlv -lv newlv oldlv
```
To enable the bad-block relocation policy for the logical volume testlv, type:
```
chlv -bbr yes testlv
```
To disable the bad-block relocation policy for the logical volume lv01, type:
```
chlv -bbr no lv01
```