How to Activate a Hitachi TrueCopy Protection Group

Steps

1. Log in to one of the cluster nodes.

   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.

2. Activate the protection group.

   When you activate a protection group, its application resource groups are also brought online.

   # geopg start -e scope [-n] protection-group-name

   -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 that deploy the protection group.

   ---

   Note –

   The property values, such as Global and Local, are not case sensitive.

   ---

   -n

   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.

   protection-group-name

   Specifies the name of the protection group

   The geopg start command uses the scswitch -Z -g resource-groups command to bring resource groups and resources online. For more information about using this command, see the scswitch(1M) man page.

Example 10–16 How the Sun Cluster Geographic Edition Software Issues the Command to Start Replication

The following example illustrates how the Sun Cluster Geographic Edition determines the Hitachi TrueCopy command used to start data replication.

First, the Hitachi TrueCopy protection group is created.

phys-paris-1# geopg create -s paris-newyork-ps -o primary -d truecopy tcpg

A device group, devgroup1, is added to the protection group.

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

The current state of a Hitachi TrueCopydevice group, devgroup1, is given in the output of the pairdisplay command as follows:

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..SMPL ----  ----, ----- ----   - 
devgroup1 pair1(R) (CL1-C , 0, 20)54321 609..SMPL ----  ----, ----- ----   - 
devgroup1 pair2(L) (CL1-A , 0, 2) 12345   2..SMPL ----  ----, ----- ----   - 
devgroup1 pair2(R) (CL1-C , 0,21) 54321 610..SMPL ----  ----, ----- ----   -

The aggregate device group state is SMPL.

Next, the protection group, tcpg, is activated by using the geopg start command.

phys-paris-1# geopg start -e local tcpg

The Sun Cluster Geographic Edition software executes the paircreate -g devgroup1 -vl -f async command at the data replication level. If the command is successful, the state of devgroup1 is given in the output of the pairdisplay command as follows:

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 COPY ASYNC,54321  609   - 
devgroup1 pair1(R) (CL1-C , 0, 20)54321 609..S-VOL COPY ASYNC,-----   1    - 
devgroup1 pair2(L) (CL1-A , 0, 2) 12345   2..P-VOL COPY ASYNC,54321  610   - 
devgroup1 pair2(R) (CL1-C , 0,21) 54321 610..S-VOL COPY ASYNC,-----   2    -

Example 10–17 Activating a Hitachi TrueCopy Protection Group Globally

The following example illustrates how to activate a protection group globally:

# geopg start -e global tcpg

The protection group, tcpg, is activated on both clusters where the protection group is configured.

Example 10–18 Activating a Hitachi TrueCopy Protection Group Locally

The following example illustrates how to activate a protection group on a local cluster only. This local cluster might be a primary cluster or a secondary cluster, depending on the cluster's role.

# geopg start -e local tcpg