Session does not change to the prepared state after you add copy sets

This condition occurs when you add copy sets to a suspended Metro Global Mirror session.

Problem

The Metro Global Mirror session does not change to the prepared state after you add copy sets to the suspended session.

If H2 is the production site, and data is being copied H2 to H1 to H3, and if the session becomes suspended while you are adding copy sets, the session might remain in the preparing state.

Action

To avoid this potential problem, do not add new copy sets to a suspended session until after you issue the Start H2->H3 command.

If you add copy sets and then issue the Start H2->H3 command, remove the newly added copy sets. The session then changes to the prepared state, and you can add the copy sets again.