Bug 1026980

Summary:	[RFE] Allow users to cluster level enable/disable KSM
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Amador Pahim <asegundo>
Component:	ovirt-engine-webadmin-portal	Assignee:	Jiri Moskovcak <jmoskovc>
Status:	CLOSED ERRATA	QA Contact:	Lukas Svaty <lsvaty>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.3.0	CC:	acathrow, dfediuck, ecohen, iheim, lbopf, mavital, milan.zelenka, Rhev-m-bugs, rmcswain, sherold, srao, yeylon
Target Milestone:	---	Keywords:	FutureFeature
Target Release:	3.4.0
Hardware:	All
OS:	Linux
Whiteboard:	sla
Fixed In Version:	ovirt-3.4.0-beta1	Doc Type:	Enhancement
Doc Text:	Red Hat Enterprise Virtualization now uses MOM (Memory Overcommit Manager) to directly control KSM (kernel same-page merging) configurations on hypervisor nodes. A new web interface option instructs MOM to enable or disable KSM for all hosts contained within a specific Cluster.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-09 15:01:04 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	SLA	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1025780
Bug Blocks:	1020228, 1078909, 1142926

Description Amador Pahim 2013-11-05 19:17:10 UTC

Up to RHEV 3.2, KSM was controlled by ksmtuned. Users wanting stop KSM just wanted to stop ksmtuned service in each host.

In RHEV 3.3, vdsm stops ksmtuned and gives KSM control to MOM. MOM controls KSM and memory ballooning.

We can disable memory ballooning using RHEV Admin Portal interface, unchecking "Enable Memory Balloon Optimization" on Cluster level, which will have effect in next Host "Up".

Please provide the equivalent way to disable KSM using Admin Portal (and API as well).

vdsm counterpart handled in http://bugzilla.redhat.com/1025780

Comment 1 Scott Herold 2014-01-06 15:44:56 UTC

*** Bug 1017832 has been marked as a duplicate of this bug. ***

Comment 2 Lukas Svaty 2014-02-26 18:17:26 UTC

verified in 3.4.0-0.11.beta3.el6

Comment 3 Doron Fediuck 2014-03-14 04:32:21 UTC

*** Bug 1076091 has been marked as a duplicate of this bug. ***

Comment 4 errata-xmlrpc 2014-06-09 15:01:04 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.

http://rhn.redhat.com/errata/RHSA-2014-0506.html