HP StorageWorks Disk Array XP operating system configuration guide (A5951-96014, August 2004)

36 HP StorageWorks Disk Array XP Operating System Configuration Guide: HP-UX
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
OPEN-L = 34756
OPEN-V = 61432
To calculate S1 for CVS, LUSE, and CVS LUSE volumes, first use the
vgdisplay command to display the physical extent size (PE Size) and
usable number of physical extents (Free PE) for the volume. Calculate
the maximum size value (in MB) as follows:
S1 = (PE Size) × (Free PE)
Logical volumes can span multiple physical volumes. Use the
diskinfo command for extended LUNs.
Example Create an OPEN-3 logical volume the size of the physical volume,
using 2344 for the size parameter. An OPEN-9 volume uses 7040 for
the size parameter to create a logical volume the size of the physical
volume.
# lvcreate –L 2344 /dev/vg06
Logical volume "/dev/vg06/lvol1" has been successfully created
with character device "/dev/vg06/rlvol1".
Logical volume "/dev/vg06/lvol1" has been successfully extended.
Volume Group configuration for /dev/vg06 has been saved in
/etc/1vmconf/vg06.cof.
2. Use the lvdisplay command to verify that the logical volume was
created correctly.