Building Disaster Recovery Serviceguard Solutions Using Metrocluster with 3PAR Remote Copy for Linux B.01.00.00, July 2013

# pvcreate -f /dev/sda1
2. Create the volume group on the source volume.
# vgcreate --addtag $(uname -n) /dev/<vgname> /dev/sda1
# vgcreate --addtag $(uname -n) /dev/<vgname>
3. Create the logical volume. (XXXX indicates size in MB).
# lvcreate -L XXXX /dev/<vgname>
4. Create a file system on the logical volume.
# mke2fs -j /dev/<vgname>/lvol1
5. If required, deactivate the volume groups on the primary system and remove the tag.
# vgchange -a n <vgname>
# vgchange --deltag $(uname -n) <vgname>
6. Run the vgscan command to make the LVM configuration visible on all the nodes.
# vgscan
7. On the source disk site, run the following commands on all the systems that might run the
Serviceguard package. If required, take a back up of a LVM configuration.
# vgchange --addtag $(uname -n) <vgname>
# vgchange -a y <vgname>
# vgcfgbackup <vgname>
# vgchange -a n <vgname>
# vgchange --deltag $(uname -n) <vgname>
8. Log in to the 3PAR storage system of the target disk site. Stop the Remote Copy volume group
and reverse the direction of replication to make disks read/write.
cli% setrcopygroup reverse —stopgroups <rc_volume_group_name>
9. On the target disk site, run the following commands on all the systems that might run the
Serviceguard package. If required, take a back up of a LVM configuration.
# vgchange --addtag $(uname -n) <vgname>
# vgchange -a y <vgname>
# vgcfgbackup <vgname>
# vgchange -a n <vgname>
# vgchange --deltag $(uname -n) <vgname>
10. Login to the source disk site of the 3PAR storage system. Reverse the direction of replication
to bring it back to its original direction.
cli% setrcopygroup reverse <rc_volume_group_name>
cli% startrcopygroup <rc_volume_group_name>
If you do not want to suspend replication at this point of time, skip the step 8, 9 and 10.
However, this will not activate the volume group to perform the vgcfgbackup. Perform the
vgcfgbackup when the volume group is activated during the first package startup at the
target disk site.
Configuring Metrocluster Packages
A Metrocluster must be completed using Metrocluster 3PAR module dts/mc3parrc.
NOTE: The maximum number of Metrocluster packages that can be configured is 64. For more
information, see “Managing CLI connections to 3PAR array” (page 30).
14 Configuring an application in a Metrocluster environment