Feature Request: Transaction / consistancy groups.

[brendon0]

I have a single application that has 4 volumes I replicate to a 2nd location. I would like the snapshots to be closer together before the replication begins. Today a have a script that runs and syncs one after the other, which means the last one could be some time behind the first one as replication takes some time to complete.

The feature would basically iterate the list of volumes passed to syncoid and create the volume snapshots for each first, creating the initial snaps seconds from each other, and then replicate that data to the replication location so the application would be more consistent on the copy.

The list could be a list passed via command line (just keep passing source,targets) or maybe in a text file with a list of source/targets line by line.

May want to consider doing a transaction group so if the 4th replication fails, the transaction rolls back all the syncs rather than just fails the 1st one.