Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Physical Data Replication for ContinentalClusters Using Continuous Access XP
Failback Scenarios
Chapter 6 319
# cmapplyconcl -C <CC-config-file>
7. Start the monitor packages at both the primary and recovery sites.
8. View the status of the ContinentalCluster primary and recovery
clusters, including configured event data:
# cmviewconcl -v
Failback When the Primary Has SMPL Status
The following procedure applies to the situation where the primary site
paired volumes have a status that has been set to SMPL, possibly through
manual intervention:
1. Halt the ContinentalClusters recovery packages at the recovery site
using the command
# cmhaltpkg <pkg_name>
This will halt any applications, remove any floating IP addresses,
unmount file systems and deactivate volume groups as programmed
into the package control files. The status of the paired volumes will
remain SMPL at the recovery site and PSUE at the primary site.
2. Start the cluster at the primary site. Assuming they have been
properly configured the ContinentalClusters primary packages
should not start. The monitor package should start automatically.
3. Since the paired volumes have a status of SMPL at both the primary
and recovery sites, the XP views the two halves as unmirrored. From
a system at the primary site, manually create the paired volume:
# paircreate -g <dev-grp-name> -f <fence-level> -vr -c 15
See the RM User Guide on more options for the paircreate
command.
Since the most current data will be at the remote or recovery site,
this will synchronize the data from the remote or recovery site (use of
the -vr option directs the command to synchronize from the remote
site). Wait for the synchronization process to complete before
proceeding to the next step. Failure to wait for the synchronization
to complete will result in the package failing to start in the next step.
4. Manually start the ContinentalClusters primary packages at the
primary site using the command