Resuming Global Mirror processing at site A

Complete this task to start or resume Global Mirror processing at the A site. This is the final step in the failback recovery process.

Site A has been repaired and connectivity reestablished with your remote site. You have followed all the prior steps in sequence and are ready to start up I/O processing from your local site.

Perform the following steps to start or resume Global Mirror processing. The example commands in this task are shown in two formats. The first format shows the type of information that is required by the command. The second format provides the command with declared values for the variables.

Issue the mkgmir command to start Global Mirror processing. Enter the mkgmir command at the dscli command prompt using the following parameters and variables:
```
mkgmir -dev storage_image_ID -lss LSS_ID -cginterval seconds
 -coordinate milliseconds -drain seconds -session session_ID
 Master_Control_Path_LSS_ID:Subordinate_Control_Path_LSS_ID
```
Example
```
dscli>mkgmir  -dev IBM.2107-75FA120 -lss 10 -cginterval 0 -coordinate 50
-drain 30 -session 01 IBM.2107-75FA120/00:IBM.2107-75FA150/00
```
Note: Issuing the mkgmir command requires that you specify the tuning parameters. The values for the tuning parameters are not retained when you end Global Mirror processing. So, in the case where you need to change the Global Mirror topology parameters, you need to resubmit the tuning parameters when you restart Global Mirror processing.
Issue the resumegmir command to continue Global Mirror processing after you have paused Global Mirror processing. Enter the resumegmir command at the dscli command prompt using the following parameters and variables:
dscli>resumegmir -dev storage_image_ID -lss LSS_ID -session session_ID Master_Control_Path_LSS_ID:Subordinate_Control_Path_LSS_ID

Example
```
dscli>resumegmir -dev IBM.1750-75FA120  -lss 10 
-session 01 IBM.1750-68FA120/00:IBM.1750-68FA150/00
```
Note: You might want to change or maintain the values that you had on your B site for the tuning parameters. You must restate these values before you process the resumegmir command. You cannot state a value for just one of the tuning parameters. You must restate all of the values (-cginterval, -coordinate, and -drain). The following example shows how to enter the resumegmir command to provide these values:
```
dscli>resumegmir -dev IBM.1750-68FA120  -lss 10 -cginterval 5
-coordinate 50 -drain 30  -session 01 
IBM.1750-68FA120/00:IBM.1750-68FA150/00
```