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Oracle Solaris Cluster Geographic Edition Data Replication Guide for Sun StorageTek Availability Suite |
1. Replicating Data With Sun StorageTek Availability Suite Software
2. Administering Sun StorageTek Availability Suite Protection Groups
Strategies for Creating Sun StorageTek Availability Suite Protection Groups
Creating a Protection Group While the Application Is Offline
Creating a Protection Group While the Application Is Online
Creating, Modifying, Validating, and Deleting a Sun StorageTek Availability Suite Protection Group
How to Create and Configure a Sun StorageTek Availability Suite Protection Group
How to Modify a Sun StorageTek Availability Suite Protection Group
How to Validate a Sun StorageTek Availability Suite Protection Group
How to Delete a Sun StorageTek Availability Suite Protection Group
Administering Sun StorageTek Availability Suite Application Resource Groups
How to Add an Application Resource Group to a Sun StorageTek Availability Suite Protection Group
Administering Sun StorageTek Availability Suite Data Replication Device Groups
How to Add a Data Replication Device Group to a Sun StorageTek Availability Suite Protection Group
How the Data Replication Subsystem Verifies the Device Group
How to Modify a Sun StorageTek Availability Suite Data Replication Device Group
Activating and Deactivating a Protection Group
How to Activate a Sun StorageTek Availability Suite Protection Group
How to Deactivate a Sun StorageTek Availability Suite Protection Group
Resynchronizing a Sun StorageTek Availability Suite Protection Group
How to Resynchronize a Sun StorageTek Availability Suite Protection Group
Checking the Runtime Status of Sun StorageTek Availability Suite Data Replication
Displaying a Sun StorageTek Availability Suite Runtime Status Overview
How to Check the Overall Runtime Status of Replication
Displaying a Detailed Sun StorageTek Availability Suite Runtime Status
3. Migrating Services That Use Sun StorageTek Availability Suite Data Replication
A. Geographic Edition Properties for Sun StorageTek Availability Suite
This section describes the following tasks:
How to Activate a Sun StorageTek Availability Suite Protection Group
How to Deactivate a Sun StorageTek Availability Suite Protection Group
When you activate a protection group, it assumes the role that you assigned to it during configuration.
For more information about configuring protection groups, see How to Create and Configure a Sun StorageTek Availability Suite Protection Group.
Before You Begin
You can activate a protection group in the following ways:
Globally, which activates a protection group on both clusters where the protection group has been configured
On the primary cluster only
On a secondary cluster only
When you activate a protection group, the data replication product you are using determines the clusters on which data replication can start. For example, the Sun StorageTek Availability Suite software allows data replication to start only from the primary cluster. So, if you activate a protection group from the secondary cluster, data replication does not start.
You must be assigned the Geo Management RBAC rights profile to complete this procedure. For more information about RBAC, see Geographic Edition Software and RBAC in Oracle Solaris Cluster Geographic Edition System Administration Guide.
This command activates the protection group on the local cluster.
When you activate a protection group on the primary cluster, its application resource groups are also brought online.
# geopg start -e scope [-n] AVSprotectiongroup
Specifies the scope of the command.
If the scope is Local, then the command operates on the local cluster only. If the scope is Global, the command operates on both clusters that deploy the protection group.
Note - The property values, such as Global and Local, are not case sensitive.
Prevents the start of data replication at protection group startup.
If you omit this option, the data replication subsystem starts at the same time as the protection group and the command performs the following operations on each device group in the protection group:
Verifies that the role configured for the replication resource is the same as the role of the protection group on the local cluster.
Verifies that the role of the volume sets associated with the device group is the same as the role of the protection group on the local cluster.
If the role of the protection group on the local cluster is secondary, unmounts the local volumes defined in all volume sets associated with the device group.
If the role of the protection group on the local cluster is primary, enables the autosynchronization feature of the Sun StorageTek Availability Suite remote mirror software. Also, resynchronizes the volume sets associated with the device group.
Specifies the name of the protection group.
The geopg start command uses the scswitch -Z -g resourcegroups command to bring resource groups and resources online. For more information about using this command, see the scswitch(1M) man page.
The geopg start command performs the following actions if the role of the protection group is primary on the local cluster:
The command runs a script that is defined in the RoleChange_ActionCmd.
The command brings the application resource groups in the protection group online on the local cluster.
If the application resource group is a failover type resource group that shares affinities with a device group in the same protection group, the command adds strong, positive affinities and failover delegation between the application resource group and the lightweight resource group.
The application resource group must not have strong, positive affinities with failover delegation. Otherwise, the attempt to add strong, positive affinities with failover delegation with the lightweight resource group will fail.
The command creates strong dependencies between the HAStoragePlus resource in the application resource group and the HAStoragePlus resource in the lightweight resource group for this device group.
If the command fails, the Configuration status might be set to Error, depending on the cause of the failure. The protection group remains deactivated, but data replication might be started and some resource groups might be brought online. Run the geoadm status command to obtain the status of your system.
If the Configuration status is set to Error, revalidate the protection group by using the procedures that are described in How to Validate a Sun StorageTek Availability Suite Protection Group.
Example 2-12 Activating a Sun StorageTek Availability Suite Protection Group Globally
This example activates a protection group globally.
# geopg start -e global avspg
Example 2-13 Activating a Sun StorageTek Availability Suite Protection Group Locally
This example activates a protection group on a local cluster only. This local cluster might be a primary cluster or a secondary cluster, depending on the role of the cluster.
# geopg start -e local avspg
Before You Begin
You can deactivate a protection group in the following ways:
Globally, meaning you deactivate a protection group on both the primary and the secondary cluster where the protection group is configured
On the primary cluster only
On the secondary cluster only
The result of deactivating a protection group on primary or secondary cluster depends on the type of data replication you are using. If you are using Sun StorageTek Availability Suite software, data replication can be stopped only from the primary cluster. So, when you deactivate a protection group on the secondary cluster, this deactivate command does not stop data replication.
You must be assigned the Geo Management RBAC rights profile to complete this procedure. For more information about RBAC, see Geographic Edition Software and RBAC in Oracle Solaris Cluster Geographic Edition System Administration Guide.
This command deactivates the protection group on all nodes of the local cluster.
When you deactivate a protection group, its application resource groups are also unmanaged.
# geopg stop -e scope [-D] protectiongroupname
Specifies the scope of the command.
If the scope is local, then the command operates on the local cluster only. If the scope is global, the command operates on both clusters where the protection group is deployed.
Note - The property values, such as global and local, are not case sensitive.
Specifies that only data replication should be stopped and the protection group should be online.
If you omit this option, the data replication subsystem and the protection group are both stopped. If the role of the protection group on the local cluster is primary, omitting the -d option also results in the following actions:
Removal of resource group affinities and resource dependencies between the application resource groups in the protection group and the internal resource group
Taking the application resource groups offline and putting them in an Unmanaged state
Specifies the name of the protection group.
If the role of the protection group is primary on the local cluster, the geopg stop command disables the autosynchronization of each device group and places the volume sets into logging mode.
If the geopg stop command fails, run the geoadm status command to see the status of each component. For example, the Configuration status might be set to Error depending on the cause of the failure. The protection group might remain activated even though some resource groups might be unmanaged. The protection group might be deactivated with data replication running.
If the Configuration status is set to Error, revalidate the protection group by using the procedures described in How to Validate a Sun StorageTek Availability Suite Protection Group.
Example 2-14 Deactivating a Sun StorageTek Availability Suite Protection Group on All Clusters
This example deactivates a protection group on all clusters.
# geopg stop -e global avspg
Example 2-15 Deactivating a Sun StorageTek Availability Suite Protection Group on a Local Cluster
This example deactivates a protection group on the local cluster.
# geopg stop -e local avspg
Example 2-16 Stopping Sun StorageTek Availability Suite Data Replication While Leaving the Protection Group Online
This example stops only data replication on a local cluster.
# geopg stop -e local -D avspg
If the administrator decides later to deactivate both the protection group and its underlying data replication subsystem, the administrator can rerun the command without the -d option.
# geopg stop -e local avspg
Example 2-17 Deactivating a Sun StorageTek Availability Suite Protection Group While Keeping Application Resource Groups Online
This example keeps online two application resource groups, apprg1 and apprg2, while deactivating their protection group, avspg.
Remove the application resource groups from the protection group.
# geopg remove-resource-group apprg1,apprg2 avspg
Deactivate the protection group.
# geopg stop -e global avspg