Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 823846

Summary:	USB tablet mouse does not work well when migrating guest rhel6.0->rhel6.3 or rhel6.1->rhel6.3
Product:	Red Hat Enterprise Linux 6	Reporter:	Qunfang Zhang <qzhang>
Component:	qemu-kvm	Assignee:	Gerd Hoffmann <kraxel>
Status:	CLOSED WONTFIX	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	6.3	CC:	acathrow, areis, bsarathy, dyasny, juzhang, knoel, michen, mkenneth, qzhou, shu, virt-maint
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-05-23 19:58:07 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 2012-05-22 10:08:22 UTC

Description of problem:
Migrate a guest (usb tablet mouse) from a rhel6.0/rhel6.1 host to rhel6.3 host, after migration, usb mouse does not work, it's very like Bug 741878 but that one only fixed migrate from 6.2<->6.2.  

Version-Release number of selected component (if applicable):
kernel-2.6.32-272.el6.x86_64
qemu-kvm-0.12.1.2-2.294.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Boot a guest with usb tablet mouse on rhel6.0 or 6.1 host
/usr/libexec/qemu-kvm -usb -device usb-tablet,id=input0 -M rhel6.0.0 (or rhel6.1.0 on rhel6.1 host)

2. Boot the guest with listening mode on rhel6.3 host with the same command line and append "-incoming tcp:0:5800"

3. Migrate guest to the dst rhel6.3 host.
  
Actual results:

before migration: 
(qemu) info mice 
* Mouse #1: QEMU USB Tablet
  Mouse #0: QEMU PS/2 Mouse
after migration:
(qemu) info mice 
  Mouse #1: QEMU USB Tablet
* Mouse #0: QEMU PS/2 Mouse

Expected results:
USB mouse should always works.

Additional info:

Comment 1 Gerd Hoffmann 2012-05-23 19:58:07 UTC

usb tablet migration in 6.0 and 6.1 is broken (source doesn't send information needed to restore state on the target).  Some guests can deal with it, reset the tablet and continue to work just fine after migration.  Others don't.

migration from 6.0 to 6.3 is likewise affected as the missing information makes it impossible for the 6.3 target host to correctly restore state.  The bug is on the 6.0 source side and we can't do anything in 6.3 to fix it.