Bug 1473863

Summary:	live-migration with boot from volume + config_drive takes a very long time.
Product:	Red Hat OpenStack	Reporter:	Siggy Sigwald <ssigwald>
Component:	openstack-nova	Assignee:	Matthew Booth <mbooth>
Status:	CLOSED ERRATA	QA Contact:	awaugama
Severity:	urgent	Docs Contact:
Priority:	high
Version:	10.0 (Newton)	CC:	akaris, aludwar, aqdas.rauf, awaugama, berrange, cory.bannister, crempel, dasmith, ebeaudoi, eglynn, gszasz, jbiao, kchamart, lyarwood, mbooth, sbauza, sclewis, sferdjao, sgordon, srevivo, ssigwald, vromanso
Target Milestone:	z2	Keywords:	Reopened, Triaged, ZStream
Target Release:	12.0 (Pike)
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	openstack-nova-16.0.2-10.el7ost	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1537068 1537069 (view as bug list)		Environment:
Last Closed:	2018-03-28 17:19:08 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1537068, 1537069

Comment 1 Andreas Karis 2017-07-24 16:15:40 UTC

Hello,

Can we get some traction for this BZ?

Thanks,

Andreas

Comment 4 Matthew Booth 2017-07-28 16:57:37 UTC

I can't reproduce this locally, btw. Migration of boot from volume with config drive completes normally here.

Comment 9 awaugama 2017-09-07 19:11:47 UTC

Closed without a fix therefore QE won't automate

Comment 26 Matthew Booth 2017-09-25 14:47:03 UTC

I've now reproduced this locally.

Comment 33 Matthew Booth 2018-01-31 14:38:04 UTC

Reproducer:

1. Create a boot-from-volume instance with a large root disk (e.g. 100G) and a config disk, but no other disks.
2. Live migrate the instance.

The bug can be considered verified if the live migration completes faster than the root disk could reasonably have been copied over the network. That is, a lightly loaded instance should live migrate in 'a few' seconds.

The bug can be directly verified by enabling libvirt debug logging and observing that no block migration of the root disk takes place, or by noting that migrateToURI3() is called with no/empty migrate_disks parameter and without VIR_MIGRATE_NON_SHARED_INC (value 128) in flags.

Comment 41 errata-xmlrpc 2018-03-28 17:19:08 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.

https://access.redhat.com/errata/RHBA-2018:0605