Bug 1320579

Summary:	[Docs] The new engine VM should have the same amount of memory as the physical host we migrate from.
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Nikolai Sednev <nsednev>
Component:	Documentation	Assignee:	Zac Dover <zdover>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Tahlia Richardson <trichard>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	3.6.0	CC:	adahms, dfediuck, eedri, gklein, lbopf, lsurette, mkalinin, rbalakri, srevivo, stirabos, ykaul, ylavi, zdover
Target Milestone:	ovirt-4.0.6	Keywords:	Triaged, ZStream
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-03-29 11:08:58 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Docs	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Nikolai Sednev 2016-03-23 14:30:29 UTC

Description of problem:
Created from comment #11 of original https://bugzilla.redhat.com/show_bug.cgi?id=1299526.

The new engine VM should have the same amount of memory as the physical host we migrate from.

In case that HE-VM should have lesser RAM than original host, then /etc/ovirt-engine/engine.conf.d/10-setup-java.conf should be edited accordingly, so min and max values won't overpass the total RAM available for the HE-VM and they should be not larger than 25% of totally available RAM for the particular HE-VM.


Version-Release number of selected component (if applicable):
rhevm-3.6.2.5-0.1.el6.noarch
jasperreports-server-pro-6.0.1-1.el6ev.noarch
ovirt-vmconsole-proxy-1.0.0-1.el6ev.noarch
ovirt-engine-extension-aaa-jdbc-1.0.5-1.el6ev.noarch
rhevm-dwh-3.6.2-1.el6ev.noarch
rhevm-dwh-setup-3.6.2-1.el6ev.noarch

How reproducible:
100%

Steps to Reproduce:
1.Migrate barebone RHEVM to HE-VM.
2.
3.

Actual results:
If RAM available on HE-VM lesser than RAM on original barebone host, then "Starting oVirt Engine: [FAILED]" on host.

Expected results:
Starting oVirt Engine: [PASS]

Comment 1 Yaniv Lavi 2016-05-09 11:01:49 UTC

oVirt 4.0 Alpha has been released, moving to oVirt 4.0 Beta target.

Comment 4 Simone Tiraboschi 2016-09-21 12:26:31 UTC

It's not hosted-engine specific, it could also affects migrating from a phisical system to another with less RAM.

Comment 10 Lucy Bopf 2017-03-29 11:08:58 UTC

This update was published here:

https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.0/html-single/self-hosted_engine_guide/#chap-Migrating_from_Bare_Metal_to_a_RHEL-Based_Self-Hosted_Environment

Moving to CLOSED.