Creating New Volume Groups - HP XP1024 System Configuration Manual

Creating new volume groups

You must create new volume groups for the new physical volumes. If desired, you can
also add any of the volumes on the disk array to existing volume groups using the
vgextend command. The physical volumes that make up one volume group can be
located either in the same disk array or in other disk arrays.
To allow more volume groups to be created, use SAM to modify the HP-UX system kernel
configuration. See
To create volume groups:
1.
Use the vgdisplay command to display the existing volume groups.
2. Choose a unique name for the new volume group (for example: vg06).
3. Create the directory for the new volume group.
Example
4.
Use the ls –l command (with the output piped to grep to display only the files
containing "group") to display the minor numbers for the existing group files.
Example
5. Choose a unique minor number for the new group file in sequential order (for
example, when existing volume groups are vg00-vg05 and the next group name is
vg06, use minor number 06 for the vg06 group file).
The minor numbers are hexadecimal (for example, the 10th minor number is
0x0a0000).
6.
Use mknod to create the group file for the new directory. Specify the volume group
name, major number, and minor number. The major number for all group files is 64.
Example
In this example: group name = vg06, major number of group file = 64, minor
number of existing group file = 06 (which must be unique for each volume group),
and c = character.
32
Installation
Appendix C - Reference information for SAM
# mkdir /dev/vg06
# ls –1 /dev/vg* | grep group
crw-rw-rw 1 root root 64 0x0000000 Nov7 08:13 group
:
# mknod /dev/vg06/group c 64 0x060000
:
for details.