HP Matrix 7.2 KVM Private Cloud Backup and Restore

Note
Recover and restart iptables from a backup if the firewall is set
up.
9. Restart the network with the new configuration using the following commands:
service network restart
service iptables restart
service multipathd restart
10. Check whether the disks (isc_quorum, isc_root, isc_glance) are visible on this host using the following
command:
multipathd –ll
11. Change the context of the VM configuration file using the following command:
chcon –v --type=bin_t /vm/config/<vm>.xml
12. Check the syntax of the cluster configuration file using the following command:
ccs_config_validate
13. Set the password for ricci to enable the use of the cman_tool update for the cluster configuration file. Use
the following command:
passwd ricci
14. Set the ricci service to automatically start on reboot using the following command:
chkconfig ricci on
15. Set up the HA-LVM using the following command:
dracut -H -f /boot/initramfs-$(uname -r).img $(uname –r)
16. Reboot the system.
17. Start the cluster manually using the following command:
service cman start
18. Start the rgmanager manually using the following command:
service rgmanager start
Verify that the cluster and rgmanager come up without errors.
19. Set the cluster to automatically start on reboot using the following command:
chkconfig cman on
20. Set the rgmanager service to automatically start on reboot using the following command:
chkconfig rgmanager on
Once the restore steps are completed, it is important to follow the steps outlined in the section “Validating the HA
configuration” to validate that the cluster functions properly.
Quorum disk restore
Quorum disk uses a small 10MB disk partition shared across the cluster. Each node of the cluster runs qdiskd,
which periodically evaluates its own health and then places its state information into an assigned portion of the
shared disk area. Each qdiskd then looks at the state of the other nodes in the cluster as posted in their area of the
Quorum disk partition.
Since the sole purpose of the Quorum disk is to determine node fitness, there is no need to back up the disk. Replace
the Quorum disk whenever it is damaged.
If the Quorum disk becomes corrupted, but the physical disk is not damaged, then skip steps 1-8 and just follow steps
from 9 through 10 to restore the disk.
Recovery steps
1. Unexport the damaged disk from both cluster nodes.
2. Create a new external shared disk for Quorum disk.
3. Export the disk to both cluster nodes (use the same LUN# used by the previous disk).
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