Bug 893919

Summary:	Incorrect prompt when enable/disable xbzrle with "migrate_set_capability" during migration process
Product:	Red Hat Enterprise Linux 7	Reporter:	Qunfang Zhang <qzhang>
Component:	qemu-kvm	Assignee:	Hai Huang <hhuang>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	low	Docs Contact:
Priority:	low
Version:	7.0	CC:	hhuang, juzhang, michen, quintela, virt-maint
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	QEMU 1.4	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-13 13:08:24 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:

Description Qunfang Zhang 2013-01-10 09:02:15 UTC

Description of problem:
Change xbzrle value (on/off) during migration process. There will be prompt and can not change the value. This is correct but the prompt has a little problem. 

(qemu)migrate_set_capability xbzrle off
migrate_set_parameter: There's a migration process in progress

Should be : migrate_set_capability: There's a migration process in progress

I guess it's because the command was "migrate_set_parameter" in the old version of xbzrle.

Version-Release number of selected component (if applicable):
kernel-3.6.0-0.29.el7.x86_64
qemu-kvm-1.3.0-3.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Boot a guest on source host and also on destination host with listening mode "-incoming tcp:0:5800"

2. Migrate guest.
(qemu) migrate -d tcp:$dst_host_ip:5800

3. Change the xbzrle value during migration process.
(qemu)migrate_set_capability xbzrle off/on
  
Actual results:
(qemu)migrate_set_capability xbzrle off
migrate_set_parameter: There's a migration process in progress

Expected results:
(qemu)migrate_set_capability xbzrle off
migrate_set_capability: There's a migration process in progress

Additional info:

Comment 2 Orit Wasserman 2013-02-12 10:02:04 UTC

Fix in QEMU 1.4

Comment 3 juzhang 2014-01-20 06:38:55 UTC

(In reply to Orit Wasserman from comment #2)
> Fix in QEMU 1.4

Hi Orit,

Since this bz has been fixed in qemu1.4, would you please add this bz into corresponding errata?

Best Regards,
Junyi

Comment 5 Miroslav Rezanina 2014-02-13 07:01:28 UTC

Changing to MODIFIED to fullfill errata process

Comment 7 Qunfang Zhang 2014-02-19 09:12:27 UTC

Verified pass with the same steps in comment 0 with qemu-kvm-1.5.3-48.el7.x86_64.

Enable xbzrle and then do migration, try to turn off xbzrle before migration finished. It will prompt: 

(qemu) migrate_set_capability xbzrle off
migrate_set_capability: There's a migration process in progress

So this issue is fixed.

Comment 9 Ludek Smid 2014-06-13 13:08:24 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.