How to Resynchronize and Revalidate the Protection Group Configuration

Use this procedure to resynchronize and revalidate data on the original primary cluster, cluster-paris, with the data on the current primary cluster, cluster-newyork.

Before You Begin

Before you resynchronize and revalidate the protection group configuration, a takeover has occurred on cluster-newyork. The clusters now have the following roles:

• If the original primary cluster, cluster-paris, has been down, confirm that the cluster is booted and that the Sun Cluster Geographic Edition infrastructure is enabled on the cluster. For more information about booting a cluster, see Booting a Cluster in Sun Cluster Geographic Edition System Administration Guide.

• The protection group on cluster-newyork has the primary role.

• The protection group on cluster-paris has either the primary role or secondary role, depending on whether the protection group could be reached during the takeover.

1. Resynchronize the original primary cluster, cluster-paris, with the current primary cluster, cluster-newyork.

   cluster-paris forfeits its own configuration and replicates the cluster-newyork configuration locally. Resynchronize both the partnership and protection group configurations.

   1. On cluster-paris, resynchronize the partnership.

      phys-paris-1# geops update partnershipname

      partnershipname

      Specifies the name of the partnership

      ---

      Note –

      You need to perform this step only once, even if you are resynchronizing multiple protection groups.

      ---

      For more information about synchronizing partnerships, see Resynchronizing a Partnership in Sun Cluster Geographic Edition System Administration Guide.

   2. On cluster-paris, resynchronize each protection group.

      Because the role of the protection group on cluster-newyork is primary, this step ensures that the role of the protection group on cluster-paris is secondary.

      phys-paris-1# geopg update protectiongroupname

      protectiongroupname

      Specifies the name of the protection group

      For more information about synchronizing protection groups, see Resynchronizing an EMC Symmetrix Remote Data Facility Protection Group.

2. On cluster-paris, validate the cluster configuration for each protection group.

   phys-paris-1# geopg validate protectiongroupname

   protectiongroupname

   Specifies a unique name that identifies a single protection group

   For more information, see How to Validate an EMC Symmetrix Remote Data Facility Protection Group.

3. On cluster-paris, activate each protection group.

   Because the protection group on cluster-paris has a role of secondary, the geopg start command does not restart the application on cluster-paris.

   phys-paris-1# geopg start -n -e local protectiongroupname

   -e local

   Specifies the scope of the command.

   By specifying a local scope, the command operates on the local cluster only.

   -n

   Specifies that data replication should not be used for this protection group. If this option is omitted, data replication starts at the same time as the protection group.

   protectiongroupname

   Specifies the name of the protection group.

   Because the protection group has a role of secondary, the data is synchronized from the current primary, cluster-newyork, to the current secondary, cluster-paris.

   For more information about the geopg start command, see How to Activate an EMC Symmetrix Remote Data Facility Protection Group.

4. Confirm that the protection group configuration is OK.

   First, confirm that the state of the protection group on cluster-newyork is OK. The protection group has a local state of OK when the EMC Symmetrix Remote Data Facility device groups on cluster-newyork have a Synchronized EMC Symmetrix Remote Data Facility pair state.

   phys-newyork-1# geoadm status

   Refer to the Protection Group section of the output.

   Next, confirm that all resources in the replication resource group, protectiongroupname-rep-rg, report a status of OK

   phys-newyork-1# scstat -g