Hi Anthony, A one-way mirror suits fine in my case (the old cluster will be dismantled in mean time) so I guess a single rbd-mirror daemon should suffice. The pool consists of OpenStack Cinder volumes containing a UUID (i.e. volume-ca69183a-9601-11ea-8e82-63973ea94e82 and such). The change of conflicts is near to zero. My main concern is pulling images into a non-empty pool. It would be (very) bad if rbd-mirror tries to be smart and removes images that don't exist in the source pool. Regards and thanks again, Kees On 14-05-2020 17:41, Anthony D'Atri wrote: > When you set up the rbd-mirror daemons with each others’ configs, and initiate mirroring of a volume, the destination will create the volume in the destination cluster and pull over data. > > Hopefully you’re creating unique volume names so there won’t be conflicts, but that said if the destination has a collision, it won’t be overwritten. > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx