Bug 1417582

Summary:	Provide a warning dialog for add brick operation for the volume which backs gluster data domain
Product:	[oVirt] ovirt-engine	Reporter:	SATHEESARAN <sasundar>
Component:	BLL.Gluster	Assignee:	Sahina Bose <sabose>
Status:	CLOSED CURRENTRELEASE	QA Contact:	SATHEESARAN <sasundar>
Severity:	medium	Docs Contact:
Priority:	high
Version:	4.1.0	CC:	bugs, sabose
Target Milestone:	ovirt-4.1.1	Flags:	rule-engine: ovirt-4.1+ rule-engine: exception+ rule-engine: planning_ack+ sabose: devel_ack+ sasundar: testing_ack+
Target Release:	4.1.1.3
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: Expanding gluster volumes in an HC environment is allowed from UI Consequence: Expanding gluster volumes requires rebalancing data from existing bricks to newly added bricks and can cause performance impact for running hyperconverged deployments Fix: Provide a warning to the user that the recommended way of increasing storage capacity in HC deployments is to add new gluster volumes	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-04-21 09:32:08 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Gluster	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1277939

Description SATHEESARAN 2017-01-30 11:02:05 UTC

Description of problem:
-----------------------
Expanding the replica 3 volume by adding more distribute leg is not recommended for the volume that backs oVirt gluster data domain particularly with hyperconvergence usecase. Provide note of warning when the user attempts to add bricks to the replica 3 volume.

Version-Release number of selected component (if applicable):
--------------------------------------------------------------
oVirt Engine Version: 4.1.0.3-0.0.master

How reproducible:
-----------------
Always

Steps to Reproduce:
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1. Add a brick to the replica 3 volume from oVirt UI

Actual results:
---------------
No warning

Expected results:
------------------
Note of warning explaining that the addition of bricks to replica 3 volume to make it as nx3 is not recommended

Comment 1 SATHEESARAN 2017-03-20 06:56:06 UTC

Tested with RHV-4.1.1-5.

Addition of bricks to the volume throws the warning messages that claims the operation should not be done, as it would end up in degraded performance.