Hello, you are right, I must explain better and I have to be more patient. I have to install new clusters so I think I will use the last ceph version. As far as object storage replication (if I understood well) there aren't problems with 3 separated cluster. As far as rbd-mirroring (in my case volumes used by openstack cinder) my question concerns the possibility of mirroring the pools of two other clusters on a disaster recovery cluste. Thanks Ignazio Il giorno ven 1 ott 2021 alle ore 18:09 <DHilsbos@xxxxxxxxxxxxxx> ha scritto: > 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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