Managing Serviceguard 13th Edition, February 2007

Building an HA Cluster Configuration
Creating the Storage Infrastructure and Filesystems with LVM and VxVM
Chapter 5210
In the following examples, we use /dev/rdsk/c1t2d0 and
/dev/rdsk/c0t2d0, which happen to be the device names for the same
disks on both
ftsys9 and ftsys10. In the event that the device file names
are different on the different nodes, make a careful note of the
correspondences.
NOTE Under agile addressing, the physical devices in these examples would
have names such as
/dev/rdisk/disk1 and /dev/rdisk/disk2. See “About
Device File Names (Device Special Files)” on page 115.
Creating Physical Volumes On the configuration node (ftsys9), use
the pvcreate command to define disks as physical volumes. This only
needs to be done on the configuration node. Use the following commands
to create two physical volumes for the sample configuration:
# pvcreate -f /dev/rdsk/c1t2d0
# pvcreate -f /dev/rdsk/c0t2d0
Creating a Volume Group with PVG-Strict Mirroring Use the
following steps to build a volume group on the configuration node
(ftsys9). Later, the same volume group will be created on other nodes.
1. First, set up the group directory for vgdatabase:
# mkdir /dev/vgdatabase
2. Next, create a control file named group in the directory
/dev/vgdatabase, as follows:
# mknod /dev/vgdatabase/group c 64 0xhh0000
The major number is always 64, and the hexadecimal minor number
has the form
0xhh0000
where hh must be unique to the volume group you are creating. Use a
unique minor number that is available across all the nodes for the
mknod command above. (This will avoid further reconfiguration later,
when NFS-mounted logical volumes are created in the VG.)
Use the following command to display a list of existing volume
groups: