[Deepsea-users] Heads-up: need to remove OSDs from CRUSH map before deleting them

[Joao Eduardo Luis]

On 03/02/2017 08:21 AM, Nathan Cutler wrote:
> tl;dr Do not "ceph osd rm" an OSD before "ceph osd crush rm"ing it
>
> Sage's explanation:
> https://github.com/ceph/ceph/pull/13732/commits/1f4feb861876e8d997401088c285b70aa2f1ee1a

While still at a proposal phase, this whole thing ties up with

   http://pad.ceph.com/p/osd-replacement

Following up on said proposal, there will be a 'ceph osd purge' command 
that will perform both those commands, along with a (proposed) 'osd 
destroy'.

This will hit luminous, and therefore SES5.

If you are reading this and think you may be interested in how we handle 
at-rest encryption keys, or replacing osds, you should read the pad 
above. Keep in mind it's still a proposal and changes are likely to happen.

   -Joao