This is currently not a possibility, but there is active research into providing improved/persistent client-side caching for RBD use-cases. In the meantime as an alternative, you can expose a portion of your SSD to each VM that needs higher IOPS and apply dm-cache / bcache on the RBD and SSD volume internal to the VM.
-- Jason Dillaman ----- Original Message ----- > From: "Lazuardi Nasution" <[email protected]> > To: [email protected] > Sent: Sunday, November 8, 2015 12:34:16 PM > Subject: [ceph-users] Multiple Cache Pool with Single Storage Pool > Hi, > I'm new with CEPH cache tiering. Is it possible to have multiple cache pool > with single storage pool backend? For example I have some compute nodes with > its own local SSDs. I want each compute node has its own cache by using its > own local SSDs. The target is to minimize load to storage pool backend. > If yes, what will be used for RBD client pool name, cache pool name or > storage pool name? How to make sure that RBD client will only use cache pool > constructed with its own local SSDs, not other nodes local SSDs? > Frankly, I'm looking for RBD client cache on SSDs, but it seem has not > available yet. > Best regards, > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
