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Bug 1785730

Summary:	[DOCS] Correction required on Journal replacement scenario in operations guide
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Mike Hackett <mhackett>
Component:	Documentation	Assignee:	ceph-docs <ceph-docs>
Documentation sub component:	Administration Guide	QA Contact:	Veera Raghava Reddy <vereddy>
Status:	CLOSED INSUFFICIENT_DATA	Docs Contact:
Severity:	medium
Priority:	unspecified	CC:	agunn, gsitlani, jbrier, kdreyer, knortema
Version:	3.3
Target Milestone:	rc
Target Release:	5.*
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-01 19:44:58 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:

Description Mike Hackett 2019-12-20 19:32:12 UTC

Description of problem:
The RHCS 3 Operations Guide details replacing a Journal disk but incorrectly provides a command which could be subject to incorrect interpretation.

Guide: 
https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/3/html-single/operations_guide/index#replacing-a-journal-using-the-command-line-interface-ops

Step 6. Set the proper parameters on the new partition:
sgdisk --change-name=0:"ceph journal" --partition-guid=0:$OLD_PART_UUID --typecode=0:45b0969e-9b03-4f30-b4c6-b4b80ceff106 --mbrtogpt -- $NEW_DEV_PATH

This is actually specifying the partition-guid as 0 in the above command, if we provide this we need to detail that this is an example that that --partition-guid=0 should reflect the partition guid being replaced.

Please see https://access.redhat.com/solutions/2328701 for more details.


Version-Release number of selected component (if applicable):
RHCS 3.3


Actual results:
Could impact OSD's and/or disks not intended to be modified.

Expected results:
Should modify correct partition.