Service Group Migration

Verify the service group can migrate to different hosts in the cluster.

  To perform the service group migration test

1. Migrate the service group to a host attached to the same array.
   1. In the Service Groups tab of the Cluster Explorer configuration tree, right-click the service group.
   2. Click Switch To, and click the system attached to the same array (hostb) from the menu.

   The service group comes online on hostb and local volumes remain in the RW/SYNCHRONIZED state.

2. Migrate the service group to a host attached to a different array:
   1. In the Service Groups tab of the Cluster Explorer configuration tree, right-click the service group.
   2. Click Switch To, and click the system attached to the another array (hostc) from the menu.

   The service group comes online on hostc and volumes there transition to the RW/FAILED OVER state.

3. Accumulate dirty tracks on the R2 side and update them back on the R1:
   # hares -action srdf_res_name update -sys hostc

   The variable srdf_res_name represents the name of the SRDF resource.

4. After the devices transition to R1 UPDATED state, migrate the service group back to its original host:
   1. In the Service Groups tab of the Cluster Explorer configuration tree, right-click the service group.
   2. Click Switch To, and click the system on which the group was initially online (hosta).

   The group comes online on hosta. The devices return to the RW/SYNCINPROG state at the array attached to hosta and hostb, and then eventually transition to the SYNCHRONIZED state.