Bug 1660503

Summary:	[docs] Document transition from deprecated ceph-disk to ceph-volume (with bluestore)
Product:	Red Hat OpenStack	Reporter:	John Fulton <johfulto>
Component:	documentation	Assignee:	Laura Marsh <lmarsh>
Status:	CLOSED CURRENTRELEASE	QA Contact:	RHOS Documentation Team <rhos-docs>
Severity:	unspecified	Docs Contact:
Priority:	urgent
Version:	15.0 (Stein)	CC:	amoralej, ccopello, gfidente, jdurgin, lhh, lmarsh
Target Milestone:	---	Keywords:	Triaged, ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	docs-accepted
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1661527 (view as bug list)		Environment:
Last Closed:	2020-03-27 20:35:42 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1661527

Description John Fulton 2018-12-18 13:25:47 UTC

When ceph-ansible 3.2 is available, customers will want to migrate to bluestore because it offers performance benefits. However, as per the doctext of bug 1640273, if they just change the `osd_objectstore: bluestore` on an existing cluster, then they'll get a failed deployment and if the ceph-storage servers are restarted the OSDs won't come online.

Thus, we need a procedure to help customers transition away from the deprecated ceph-disk tool while they migrate to the new bluestore backend. The procedure to migrate ceph-ansible, without director, is described in the doctext of bug 1640273. However, users of director need to follow a slightly different procedure.

This affects RHHI-C documentation too.

Comment 1 John Fulton 2018-12-18 13:32:47 UTC

I propose that you use a derivative work of the following to resolve this https://review.openstack.org/#/c/625727/

Comment 2 John Fulton 2018-12-18 13:34:38 UTC

This applies to OSP13 and newer