qemu-kvm-1.0 regression with usb tablet after live migration

DISCUSSION Peter Lieven 1 participant 2 messages Feb 9, 2012 – Feb 15, 2012 KVM

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Peter Lieven

author

2012-02-09 18:12 UTC #0 lore raw

Hi,

i recently started updating our VMs to qemu-kvm 1.0. Since that I see that the usb tablet device (used for as pointer device for accurate mouse positioning) becomes unavailable after live migrating.
If I migrate a few times a Windows 7 VM reliable stops using
the USB tablet and fails back to PS/2 mouse.
If I do the same with qemu-kvm-0.12.5 with the very same VM its working fine.

Can anyone imagine what introduced this flaw?

Thanks,
Peter

Peter Lieven

author

2012-02-15 09:26 UTC #1 lore raw

Anyone?

Quoted 18 lines · Peter Lieven

Hi,
i recently started updating our VMs to qemu-kvm 1.0. Since that I see that the usb tablet device (used for as pointer device for accurate mouse positioning) becomes unavailable after live migrating. If I migrate a few times a Windows 7 VM reliable stops using the USB tablet and fails back to PS/2 mouse.
If I do the same with qemu-kvm-0.12.5 with the very same VM its working fine.
Can anyone imagine what introduced this flaw?
Thanks,
Peter