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| From: | Gerd Hoffmann |
| Subject: | [Qemu-devel] Re: Migration of WinXP Guest -> usb+network failure |
| Date: | Mon, 14 Feb 2011 15:32:35 +0100 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101208 Red Hat/3.1.7-3.el6_0 Thunderbird/3.1.7 |
On 02/08/11 14:32, Peter Lieven wrote:
Hi, is there any known issue when migrating a WinXP SP3 guest with qemu-kvm 0.13.0 or qemu-kvm-0.12.5? If I migrate such a guest with a Realtek rtl8139 Network Device and an USB Mouse Tablet after migration the USB Tablet doesn't work any more and network stalls. I have seen the mouse moving a few seconds after migration and that stop moving.
usb devices simply don't have migration support. The 0.14 release will add that for usb hid devices and the usb hub.
Whenever the devices work after migration depends on how the guest os handles usb errors. Recent linux kernels just reset+reinitialize hid devices which fail, log a message about it and go on without a hitch. Other guests might be more sensitive, so this could be it, but maybe it isn't.
No idea on the rtl issue. cheers, Gerd
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