According to: http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-May/009485.html it seems not entirely safe to copy an RBD pool this way.
This thread mentions doing a rados ls and the get/put the objects but Greg mentioned that this may also have issues with snapshots.
Maybe cppool has been fixed but maybe there is no generic way to do this.
On Sat, Feb 11, 2017 at 4:42 AM, Eugen Block <eblock@xxxxxx> wrote:
I'm not sure if this is what you need, but I recently tried 'rados cppool <source-pool> <dest-pool>' to populate a new test-pool with different properties. I simply needed some data in there, and this command for me.
Regards,
Eugen
Zitat von 林自均 <johnlinp@xxxxxxxxx>:
Hi Irek & Craig,
Sorry, I misunderstood "RBD mirroring". What I want to do is not like that.
I just want to move all the data from a cluster to another. It can be
achieved by `rados -p <pool> get <object> <filename>` for all objects on
cluster A, and then `rados -p <pool> put <object> <filename>` on cluster B.
Is there any tool for that?
Best,
John Lin
Craig Chi <craigchi@xxxxxxxxxxxx> 於 2017年2月9日 週四 下午4:43寫道：
Моб.: +79229045757 <+7%20922%20904-57-57>Hi,
Sorry I gave the wrong feature.
rbd mirroring method can only be used on rbd with "journaling" feature
(not layering).
Sincerely,
Craig Chi
On 2017-02-09 16:41, Craig Chi <craigchi@xxxxxxxxxxxx> wrote:
Hi John,
rbd mirroring can configured by pool.
http://docs.ceph.com/docs/master/rbd/rbd-mirroring/
However the rbd mirroring method can only be used on rbd with layering
feature, it can not mirror objects other than rbd for you.
Sincerely,
Craig Chi
On 2017-02-09 16:24, Irek Fasikhov <malmyzh@xxxxxxxxx> wrote:
Hi.
I recommend using rbd import/export.
С уважением, Фасихов Ирек Нургаязович
2017-02-09 11:13 GMT+03:00 林自均 <johnlinp@xxxxxxxxx>:
Hi,
I have 2 Ceph clusters, cluster A and cluster B. I want to move all the
pools on A to B. The pool names don't conflict between clusters. I guess
it's like RBD mirroring, except that it's pool mirroring. Is there any
proper ways to do it?
Thanks for any suggestions.
Best,
John Lin
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