Hello. I would like to use mirroring to facilitate migrating from an existing Nautilus cluster to a new cluster running Reef. RIght now I'm looking at RBD mirroring. I have studied the RBD Mirroring section of the documentation, but it is unclear to me which commands need to be issued on each cluster and, for commands that have both clusters as arguments, when to specify site-a where vs. site-b. Another concern: Both the old and new cluster internally have the default name 'Ceph' - when I set up the second cluster I saw no obvious reason to change from the default. If these will cause a problem with mirroring, is there a workaround? In the long run I will also be migrating a bunch of RGW data. If there are advantages to using mirroring for this I'd be glad to know. (BTW, the plan is to gradually decommission the systems from the old cluster and add them to the new cluster. In this context, I am looking to enable and disable mirroring on specific RBD images and RGW buckets as the client workload is migrated from accessing the old cluster to accessing the new. Thanks. -Dave -- Dave Hall Binghamton University kdhall@binghamton.edu