Hi Jason,
What is the worst case if I made cache pool from local ASDa owner by all compute nodes? Is using block cache inside VM has compatibility issue with live migration?
Best regards,
On Nov 9, 2015 9:04 PM, "Jason Dillaman" <dillaman@xxxxxxxxxx> wrote:
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" <mrxlazuardin@xxxxxxxxx>
> To: ceph-users@xxxxxxxxxxxxxx
> Sent: Sunday, November 8, 2015 12:34:16 PM
> Subject: 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,
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