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Bug 1023360 - mice changes to PS/2 from usb tablet after migration with -M 6.0.0 or 6.1.0 (vnc)
Summary: mice changes to PS/2 from usb tablet after migration with -M 6.0.0 or 6.1.0 (...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm
Version: 6.5
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Gerd Hoffmann
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-10-25 09:22 UTC by Shaolong Hu
Modified: 2014-04-16 11:20 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-04-16 11:20:42 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Shaolong Hu 2013-10-25 09:22:11 UTC 
Description of problem:
--------------------------
On latest RHEL6.5 host, migrate guest with -M 6.0.0 or 6.1.0, after migration, info mice shows PS/2 instead of usb tablet, and on des host, mice suffers from dislocation problem. It works fine with -M 6.2.0, 6.3.0, 6.4.0 and 6.5.0, all RHEL6 Z stream has the same problem.

We find this in recent round of stable guest abi test, it seems we have this problem for a long time, probably a WONTFIX one, but i fail to locate the old bug.


Version-Release number of selected component (if applicable):
---------------------------------------------------------------
qemu-kvm-0.12.1.2-2.414.el6
connection: vnc
guest: win2012-64


How reproducible:
--------------------
100%


Steps to Reproduce:
--------------------
1. ping pong migration

CMD:

/usr/libexec/qemu-kvm -enable-kvm -M rhel6.1.0 -smp 4 -m 4G -name win2012 -uuid 3f2ea5cd-3d29-48ff-aab2-23df1b6ae213 -drive file=nfs/win2012-64-virtio.qcow2,cache=none,if=none,rerror=stop,werror=stop,id=drive-virtio-disk0,format=qcow2,aio=native -device virtio-blk-pci,drive=drive-virtio-disk0,id=device-virtio-disk0 -netdev tap,script=/etc/qemu-ifup,id=netdev0 -device virtio-net-pci,netdev=netdev0,id=device-net0,mac=aa:54:00:11:22:33 -boot order=cd -monitor stdio -usb -device usb-tablet,id=input0 -chardev socket,id=s1,path=/tmp/s1,server,nowait -device isa-serial,chardev=s1 -vnc :10 -monitor tcp::1234,server,nowait
Comment 2 Qunfang Zhang 2013-10-27 10:53:14 UTC 
Maybe a similar issue with:
Bug 823846  - USB tablet mouse does not work well when migrating guest rhel6.0->rhel6.3 or rhel6.1->rhel6.3

According to Gerd, usb tablet migration in 6.0 and 6.1 is broken.
Comment 3 RHEL Program Management 2013-11-01 08:26:37 UTC 
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.
Comment 4 Gerd Hoffmann 2014-04-16 11:20:42 UTC 
> On latest RHEL6.5 host, migrate guest with -M 6.0.0 or 6.1.0, after
> migration, info mice shows PS/2 instead of usb tablet, and on des host, mice
> suffers from dislocation problem. It works fine with -M 6.2.0, 6.3.0, 6.4.0
> and 6.5.0, all RHEL6 Z stream has the same problem.
> 
> We find this in recent round of stable guest abi test, it seems we have this
> problem for a long time, probably a WONTFIX one, but i fail to locate the
> old bug.

WONTFIX indeed.  live migration support for usb devices was added in 6.2.0.
For bug compatibility reasons it must be turned off for 6.1.0 and 6.0.0
machine types.  So live migration with these machine types and usb devices
has a few known issues which can't be fixed without breaking live migration
to RHEL-6.{0,1} qemu-kvm versions.
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