Ignazio; If your first attempt at asking a question results in no responses, you might consider why, before reposting. I don't use RBD mirroring, so I can only supply theoretical information. Googling RBD mirroring (for me) results in the below as the first result: https://docs.ceph.com/en/latest/rbd/rbd-mirroring/ You're also mixing terminology, which confuses the request, and you're overly complicating the request. You ask about mirroring RBD, then you ask about mirroring pools, these are different. A basic Ceph cluster doesn't have the ability to replicate, so pools can't replicate / mirror, but the overlay technologies might (RGW and RBD do). Replication is between 2 clusters, however, so the question about 3 clusters is confusing. To summarize, my understanding is: You can replicate RBD from A to C (or B), and you can replicate B to C (or A), I don't believe that you can replicate A to B to C, if that's what you're asking. You CANNOT replicate -pools- on A (or B) to C (or any other cluster). A final thought; when asking about specific functionality, it is usually wise to indicate what version you are running, as capabilities are being added all the time. For instance, if you're running Pacific (16.2.x), then you might consider the capabilities of a stretched cluster, rather than RBD mirroring. https://docs.ceph.com/en/pacific/rados/operations/stretch-mode/ Thank you, Dominic L. Hilsbos, MBA Vice President - Information Technology Perform Air International Inc. DHilsbos@xxxxxxxxxxxxxx www.PerformAir.com -----Original Message----- From: Ignazio Cassano [mailto:ignaziocassano@xxxxxxxxx] Sent: Thursday, September 30, 2021 11:38 PM To: ceph-users Subject: urgent question about rdb mirror Hello All, Please I would like to know if it is possibile two clusters can mirror rbd to a third cluster. In other words I have 3 separated ceph cluster : A B C. I would like cluster A and cluster B can mirror some pools on cluster C. Is it possible ? Thanks _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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