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Bug 1151001

Summary:	[RFE] Support auto-convergence and XBZRLE compression during migration
Product:	[oVirt] ovirt-engine	Reporter:	Martin Betak <mbetak>
Component:	RFEs	Assignee:	Martin Betak <mbetak>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Israel Pinto <ipinto>
Severity:	high	Docs Contact:
Priority:	high
Version:	---	CC:	bugs, gklein, iheim, istein, lsurette, michal.skrivanek, pzhukov, rbalakri, yeylon, ykaul, ylavi
Target Milestone:	ovirt-3.6.0-rc	Keywords:	FutureFeature
Target Release:	3.6.0	Flags:	rule-engine: ovirt-3.6.0+ ylavi: planning_ack+ rule-engine: devel_ack+ rule-engine: testing_ack+
Hardware:	Unspecified
OS:	Unspecified
URL:	http://www.ovirt.org/Features/XBZRLE_and_Auto-Convergence
Whiteboard:
Fixed In Version:	ovirt-engine-3.6.0-0.0.master.20150412172306.git55ba764	Doc Type:	Release Note
Doc Text:	Feature: Expose qemu capabilities for auto-convergence and XBZRLE page delta compression. Reason: Reduce VM downtime and improve convergence during migration. Result: It is now possible to specify whether the auto-convergence and/or migration compression features should be used during VM live migration. This is supported by hierarchical configuration in 3 levels: global (engine-config), cluster and VM. Details: http://www.ovirt.org/Features/XBZRLE_and_Auto-Convergence	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-02-18 11:01:00 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	867453, 1109154

Description Martin Betak 2014-10-09 11:51:55 UTC

Take advantage of new libvirt migration parameters introduced in RHEL 7.1

Auto-convergence helps live migration converge when the guest is dirtying pages too fast for the network throughput.

XZBRLE feature compresses same memory pages, speeding up migration for gests with many similar/identical pages.

Comment 2 Israel Pinto 2016-02-17 11:54:11 UTC

Verify:
Support live migration with XBZRLE page delta compression:
https://bugzilla.redhat.com/show_bug.cgi?id=1109154#c6
Help live migration converge when guest dirties pages too fast
https://bugzilla.redhat.com/show_bug.cgi?id=867453#c12