HP XP12000 - Manual (Page 43)

Installation 45
Creating logical volumes
Use these commands for logical volume configuration:
lvremove Deletes a logical volume.
Any file system attached to the logical volume must be
unmounted before executing the lvremove command.
Example: lvremove /dev/vgnn/lvolx
lvextend Increases the size of an existing logical volume.
Example: lvextend –L size /dev/vgnn/lvolx
lvreduce Decreases the size of an existing logical volume.
Any file system attached to the logical volume must be
unmounted before executing the lvreduce command.
Example: lvreduce –L size /dev/vgnn/lvolx
Caution
Data within the file system can be lost after execution of lvreduce.
Create logical volumes after you create volume groups. A logical volume
must be created for each new SCSI disk device
To create logical volumes:
1. Use the lvcreate –L command to create a logical volume.
Specify the volume size (in megabytes) and the volume group for the
new logical volume. HP-UX assigns the logical volume numbers
automatically (lvol1, lvol2, lvol3). Use the following capacity values
for the size parameter:
OPEN-K = 1740
OPEN-3 = 2344
OPEN-8 = 7004
OPEN-9 = 7004
OPEN-E = 13888