Feature #25166

Updated by Lenz Grimmer over 1 year ago

Ceph provides a concept of "cache pools": It should be possible for an administrator to define such a cache pool and assign it to an existing pool via dashboard:

h3. h2. Purpose

Use a pool of fast storage devices (probably SSDs) and use it as a cache for an existing slower and larger pool.

Use a replicated pool as a front-end to service most I/O, and destage cold data to a separate erasure coded pool that does not currently (and cannot efficiently) handle the workload.

We should be able to create and add a cache pool to an existing pool of data, and later remove it, without disrupting service or migrating data around.

h3. h2. See also: