Bug 1790479

Summary:	[RFE] [ceph-ansible] : FS to BS migration - reuse journal partition / journal vm for bluestore OSDs for db/wal
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Vasishta <vashastr>
Component:	Ceph-Ansible	Assignee:	Dimitri Savineau <dsavinea>
Status:	CLOSED ERRATA	QA Contact:	Vasishta <vashastr>
Severity:	high	Docs Contact:
Priority:	medium
Version:	4.0	CC:	aschoen, ceph-eng-bugs, ceph-qe-bugs, dsavinea, gabrioux, gmeno, hyelloji, jbrier, knortema, nthomas, rmandyam, tserlin, ykaul
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	4.1	Flags:	hyelloji: needinfo-
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ceph-ansible-4.0.16-1.el8, ceph-ansible-4.0.16-1.el7	Doc Type:	Enhancement
Doc Text:	.The dedicated journal devices retain their configuration when migrating from Filestore OSD to Bluestore Previously, dedicated journal devices for Filestore OSD could not be reused when migrating to Bluestore OSD DB. An example of a dedicated device configuration is using a HDD for data and an SSD for journaling. With this update, dedicated journal devices retain their configuration during the migration, so that they can be reused with the Bluestore OSD DB. For more information, see link:{admin-guide}#how-to-migrate-the-object-store-from-filestore-to-bluestore[How to Migrate the Object Store from FileStore to BlueStore] in the link:{admin-guide}[Administration Guide].	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-05-19 17:31:40 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:	1733577, 1816167

Description Vasishta 2020-01-13 13:10:44 UTC

Description of problem:
If user had used dedicated scenario for filestore OSDs, devices in dedicated scenario, devices in dedicated_devices will be reused while creating bluestore OSDs.

Similarly ceph-ansible can reuse journal lvm or journal partition [1] while creating bluestore OSDs.

[1]- Ref - https://github.com/ceph/ceph-ansible/blob/stable-3.2/group_vars/osds.yml.sample#L181-L196

Version-Release number of selected component (if applicable):
ceph-ansible-4.0.8-1.el7cp.noarch

How reproducible:
Always

Steps to Reproduce:
1. Configure 3.x cluster with lvm scenario and filestore OSDs (ref [1] above)
2. upgrade the cluster to 4.x
3. run filestore-to-bluestore.yml

Actual results:
lvms and journals previously used for journals in filestore will be omitted

Expected results:
lvms and journals previously used for journals in filestore can use reused for bluestore as wal/db

Comment 8 Vasishta 2020-04-18 10:48:52 UTC

Working as expected with ceph-ansible-4.0.19-1.el7cp.noarch
Moving to VERIFIED state.

Comment 12 errata-xmlrpc 2020-05-19 17:31:40 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:2231