Managing Serviceguard 12th Edition, March 2006

Building an HA Cluster Configuration
Creating the Storage Infrastructure and Filesystems with LVM and VxVM
Chapter 5212
The first command creates the volume group and adds a physical volume to
it in a physical volume group called
bus0 . The second command adds the
second drive to the volume group, locating it in a different physical volume
group named
bus1 . The use of physical volume groups allows the use of
PVG-strict mirroring of disks and PV links.
4. Repeat this procedure for additional volume groups.
Creating Logical Volumes Use the following command to create
logical volumes (the example is for /dev/vgdatabase):
# lvcreate -L 120 -m 1 -s g /dev/vgdatabase
This command creates a 120 MB mirrored volume named lvol1 . The
name is supplied by default, since no name is specified in the command.
The
-s g option means that mirroring is PVG-strict, that is, the mirror
copies of data will be in different physical volume groups.
NOTE If you are using disk arrays in RAID 1 or RAID 5 mode, omit the -m 1
and -s g options.
Creating File Systems If your installation uses filesystems, create
them next. Use the following commands to create a filesystem for
mounting on the logical volume just created:
1. Create the filesystem on the newly created logical volume:
# newfs -F vxfs /dev/vgdatabase/rlvol1
Note the use of the raw device file for the logical volume.
2. Create a directory to mount the disk:
# mkdir /mnt1
3. Mount the disk to verify your work:
# mount /dev/vgdatabase/lvol1 /mnt1
Note the mount command uses the block device file for the logical
volume.
4. Verify the configuration:
# vgdisplay -v /dev/vgdatabase