Managing HP Serviceguard for Linux, Sixth Edition, August 2006

Building an HA Cluster Configuration
Creating the Logical Volume Infrastructure
Chapter 5148
CAUTION The minor numbers used by the LVM volume groups must be the same
on all cluster nodes. This means that if there are any non-shared volume
groups in the cluster, create the same number of them on all nodes, and
create them before you define the shared storage.
NOTE Except as noted in the sections that follow, you perform the LVM
configuration of shared storage on only one node. The disk partitions
will be visible on other nodes as soon as you reboot those nodes. After
you’ve distributed the LVM configuration to all the cluster nodes, you
will be able to use LVM commands to switch volume groups between
nodes. (To avoid data corruption, a given volume group must be active on
only one node at a time).
For multipath information, see the “Multipath for Storage” section of the
latest version of the Serviceguard for Linux A.11.16 Release Notes.