HP Serviceguard manual Setting Up and Running the Quorum Server

IMPORTANT: The purpose of cmnotdisk.conf is to exclude specific devices, usually CD and DVD drives, that Serviceguard does not recognize and which should not be probed. Make sure you do not add a DEVICE_FILE entry in cmnotdisk.conf for any device that should be probed; that is, disk devices being managed by LVM or LVM2. Excluding any such device will cause cmquerycl to fail.

Setting Up and Running the Quorum Server

If you will be using a Quorum Server rather than a lock disk or LUN, the Quorum Server software must be installed on a system other than the nodes on which your cluster will be running, and must be running during cluster configuration.

For detailed discussion, recommendations, and instructions for installing, updating, configuring, and running the Quorum Server, see HP Serviceguard Quorum Server Version A.04.00 Release Notes at http:///www.hp.com/go/hpux-serviceguard-docs-> HP Quorum Server Software.

Creating the Storage Infrastructure and file systems with LVM, VxVM and CVM

In addition to configuring the cluster, you create the appropriate logical volume infrastructure to provide access to data from different nodes. This is done several ways:

•for Logical Volume Manager, see “Creating a Storage Infrastructure with LVM” (page 177).

Do this before you configure the cluster if you use a lock disk; otherwise it can be done before or after.

•for Veritas Volume Manager, see“Creating a Storage Infrastructure with VxVM” (page 183)

Do this before you configure the cluster if you use a lock disk; otherwise it can be done before or after.

•for Veritas Cluster File System with CVM, see “Creating a Storage Infrastructure with Veritas Cluster File System (CFS)” (page 199)

Do this after you configure the cluster.

•for Veritas Cluster Volume Manager, see “Creating the Storage Infrastructure with Veritas Cluster Volume Manager (CVM)” (page 219)

Do this after you configure the cluster.

You can also use a mixture of volume types, depending on your needs.

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 179)

•“Creating Logical Volumes” (page 180)

•“Creating File Systems” (page 180)

•“Distributing Volume Groups to Other Nodes” (page 181)

•“Making Physical Volume Group Files Consistent” (page 183)

Preparing Your Systems 177