Managing Serviceguard 12th Edition, March 2006

Building an HA Cluster Configuration
Creating the Storage Infrastructure and Filesystems with LVM and VxVM
Chapter 5210
Creating Volume Groups for Mirrored Individual Data Disks
The procedure described in this section uses physical volume groups
for mirroring of individual disks to ensure that each logical volume is
mirrored to a disk on a different I/O bus. This kind of arrangement is
known as PVG-strict mirroring. It is assumed that your disk
hardware is already configured in such a way that a disk to be used as a
mirror copy is connected to each node on a different bus than the bus
that is used for the other (primary) copy.
For more information on using LVM, refer to the HP-UX Managing
Systems and Workgroups manual.
Using SAM to Create Volume Groups and Logical Volumes
You can use SAM to prepare the volume group and logical volume
structure needed for HA packages. In SAM, choose the “Disks and File
Systems Area.” Then use the following procedure for each volume group
and filesystem you are using with the package:
1. Select the Volume Groups subarea.
2. From the Actions menu, choose Create or Extend.
3. Choose the first physical disk you wish to use in the volume group by
selecting it from the list of available disks.
4. Enter the volume group name, e.g., vgdatabase.
5. Choose Create or Extend Volume Group.
6. Choose Add New Logical Volumes.
7. When adding logical volumes to the volume group, ensure that you
are creating mirrored logical volumes with PVG strict allocation.
8. Specify the filesystem that is to be mounted on the volume group, for
example, /mnt1.
9. Repeat the procedure for additional volume groups, logical volumes,
and filesystems.
Skip ahead to the section “Deactivating the Volume Group”.
Using LVM Commands to Create Volume Groups and Logical
Volumes If your volume groups have not been set up, use the
procedure in the next sections. If you have already done LVM
configuration, skip ahead to the section “Configuring the Cluster.”