Bug 1026980 - [RFE] Allow users to cluster level enable/disable KSM
[RFE] Allow users to cluster level enable/disable KSM
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: ovirt-engine-webadmin-portal (Show other bugs)
All Linux
medium Severity medium
: ---
: 3.4.0
Assigned To: Jiri Moskovcak
Lukas Svaty
: FutureFeature
: 1017832 1076091 (view as bug list)
Depends On: 1025780
Blocks: GSS_RHEV_33_BETA rhev3.4beta 1142926
  Show dependency treegraph
Reported: 2013-11-05 14:17 EST by Amador Pahim
Modified: 2016-02-10 15:15 EST (History)
12 users (show)

See Also:
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:
Last Closed: 2014-06-09 11:01:04 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: SLA
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
oVirt gerrit 23358 None None None Never
oVirt gerrit 23359 None None None Never
oVirt gerrit 23360 None None None Never

  None (edit)
Description Amador Pahim 2013-11-05 14:17:10 EST
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 10:44:56 EST
*** Bug 1017832 has been marked as a duplicate of this bug. ***
Comment 2 Lukas Svaty 2014-02-26 13:17:26 EST
verified in 3.4.0-0.11.beta3.el6
Comment 3 Doron Fediuck 2014-03-14 00:32:21 EDT
*** Bug 1076091 has been marked as a duplicate of this bug. ***
Comment 4 errata-xmlrpc 2014-06-09 11:01:04 EDT
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.


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