Managing Serviceguard Eighteenth Edition, September 2010

NOTE: If you are configuring volume groups that use mass storage on HP’s HA disk
arrays, you should use redundant I/O channels from each node, connecting them to
separate ports on the array. As of HP-UX 11i v3, the I/O subsystem performs load
balancing and multipathing automatically.
Creating a Storage Infrastructure with LVM
This section describes how to configure disk storage using HP's Logical Volume Manager
(LVM). It covers the following tasks:
• “Creating Volume Groups” (page 232)
• “Creating Logical Volumes” (page 234)
• “Creating File Systems” (page 235)
• “Distributing Volume Groups to Other Nodes” (page 235)
• “Making Physical Volume Group Files Consistent” (page 238)
NOTE: The procedures that follow describe the command-line method of configuring
LVM storage. There are two other, more automated methods you can use.
• System Management Homepage
You can use the System Management Homepage to create or extend volume groups
and create logical volumes. From the System Management Homepage, choose
Disks and File Systems. Make sure you create mirrored logical volumes
with PVG-strict allocation; see“Using Mirrored Individual Data Disks” (page 232).
When you have created the logical volumes and created or extended the volume
groups, specify the filesystem that is to be mounted on the volume group, then
proceed with“Distributing Volume Groups to Other Nodes” (page 235).
• cmpreparestg
You can use cmpreparestg (1m) to accomplish the tasks described under
“Creating Volume Groups” (page 232). See “Using Easy Deployment Commands
to Configure the Cluster” (page 211) for more information. If you use
cmpreparestg, you do not need to perform the procedures that follow, but it is
a good idea to read them so that you understand what cmpreparestg does for
you. Then proceed to “Making Physical Volume Group Files Consistent” (page 238).
If you have already done LVM configuration, skip ahead to “Configuring the Cluster
” (page 242).
Preparing Your Systems 231