Sun Cluster Geographic Edition Data Replication Guide for Hitachi TrueCopy and Universal Replicator

ProcedureHow to Deactivate a Hitachi TrueCopy or Universal Replicator Protection Group

  1. Log in to a cluster node.

    You must be assigned the Geo Management RBAC rights profile to complete this procedure. For more information about RBAC, see Sun Cluster Geographic Edition Software and RBAC in Sun Cluster Geographic Edition System Administration Guide.

  2. Deactivate the protection group.

    When you deactivate a protection group, its application resource groups are also unmanaged.


    # geopg stop -e scope [-D] protectiongroupname
    
    -e scope

    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.


    -D

    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.

    protectiongroupname

    Specifies the name of the protection group.


Example 2–19 How the Sun Cluster Geographic Edition Software Issues the Command to Stop Replication

This example illustrates how the Sun Cluster Geographic Edition software determines the Hitachi TrueCopy or Universal Replicator command that is used to stop data replication.

The current state of the Hitachi TrueCopy or Universal Replicator device group, devgroup1, is provided in the output of the pairdisplay command:


phys-paris-1# pairdisplay -g devgroup1
Group PairVol(L/R) (Port#,TID,LU),Seq#,LDEV#,P/S,Status,Fence,Seq#,P-LDEV# M 
devgroup1 pair1(L) (CL1-A , 0, 1) 12345   1..P-VOL PAIR ASYNC,54321  609   - 
devgroup1 pair1(R) (CL1-C , 0, 20)54321 609..S-VOL PAIR ASYNC,-----   1    - 
devgroup1 pair2(L) (CL1-A , 0, 2) 12345   2..P-VOL PAIR ASYNC,54321  610   - 
devgroup1 pair2(R) (CL1-C , 0,21) 54321 610..S-VOL PAIR ASYNC,-----   2    -

A device group, devgroup1, is added to the protection group as follows:


phys-paris-1# geopg add-device-group -p fence_level=async devgroup1 tcpg

The Sun Cluster Geographic Edition software runs the pairvolchk -g <DG> -ss command at the data replication level, which returns a value of 43.


# pairvolchk -g devgroup1 -ss
Volstat is P-VOL.[status = PAIR fence = ASYNC]
phys-paris-1# echo $?
43

Next, the protection group, tcpg, is deactivated by using the geopg stop command.


phys-paris-1# geopg stop -s local tcpg

The Sun Cluster Geographic Edition software runs the pairsplit -g devgroup1 command at the data replication level.

If the command is successful, the state of devgroup1 is provided in the output of the pairdisplay command:


phys-paris-1# pairdisplay -g devgroup1
Group PairVol(L/R) (Port#,TID,LU),Seq#,LDEV#,P/S,Status,Fence,Seq#,P-LDEV# M
devgroup1 pair1(L) (CL1-A , 0, 1) 12345   1..P-VOL PSUS ASYNC,54321  609   - 
devgroup1 pair1(R) (CL1-C , 0, 20)54321 609..S-VOL SSUS ASYNC,-----   1    - 
devgroup1 pair2(L) (CL1-A , 0, 2) 12345   2..P-VOL PSUS ASYNC,54321  610   - 
devgroup1 pair2(R) (CL1-C , 0,21) 54321 610..S-VOL SSUS ASYNC,-----   2    -


Example 2–20 Deactivating a Protection Group on All Clusters

This example deactivates a protection group on all clusters.


# geopg stop -e global tcpg


Example 2–21 Deactivating a Protection Group on a Local Cluster

This example deactivates a protection group on the local cluster.


# geopg stop -e local tcpg


Example 2–22 Stopping Data Replication While Leaving the Protection Group Online

This example stops only data replication on a local cluster.


# geopg stop -e local -D tcpg

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 tcpg


Example 2–23 Deactivating a Hitachi TrueCopy or Universal Replicator Protection Group While Keeping Application Resource Groups Online

This example keeps two application resource groups, apprg1 and apprg2, online while deactivating their protection group, tcpg, on both clusters.

  1. Remove the application resource groups from the protection group.


    # geopg remove-resource-group apprg1,apprg2 tcpg
    
  2. Deactivate the protection group.


    # geopg stop -e global tcpg