Re: [Xen-devel] Bug in usbdevices option handling when BusID=8

[Gordan Bobic <gordan@xxxxxxxxxx>]

On Tue, 6 Aug 2013 10:24:09 +0100, George Dunlap 
<George.Dunlap@xxxxxxxxxxxxx> wrote:
> On Mon, Aug 5, 2013 at 8:20 PM, Gordan Bobic <gordan@xxxxxxxxxx> 
> wrote:
> > On 08/05/2013 02:22 PM, George Dunlap wrote:
> > > On Mon, Aug 5, 2013 at 8:29 AM, Ian Campbell 
> > > <Ian.Campbell@xxxxxxxxxx>
> > > wrote:
> > > > On Sun, 2013-08-04 at 12:08 +0100, Gordan Bobic wrote:
> > > > > At a glance, this looks like something buggy happens when 
> > > > > BusID=8. It
> > > > > sees that the device is host:008.002, but then goes and tries to 
> > > > > open
> > > > > /dev/bus/usb/000/002 instead of /dev/bus/usb/008/002.
> > > >
> > > > Smells like a bitmask gone wrong somewhere, or something like 
> > > > that.
> > > > xl/libxl doesn't really do much with the string which you passed 
> > > > in so
> > > > it should be going straight to qemu unmodified. You ought to be 
> > > > able to
> > > > see this in the logs I think.
> > >
> > > Or using ps -ax -- what does that show the command-line to be?
> >
> > It looks like a qemu-traditional (qemu-dm) issue:
> >
> > # grep usb /var/log/xen/qemu-dm-edi.log
> >
> > husb: open device 0.2
> > /dev/bus/usb/000/002: No such file or directory
> >
> > # ps auxw | grep qemu
> > root      8364  4.4  0.0 239132  8880 ?        SLsl 20:16   0:07
> > /usr/lib/xen/bin/qemu-dm -d 1 -domain-name edi -vnc 127.0.0.1:0 
> > -vncunused
> > -k en-gb -serial pty -videoram 8 -std-vga -boot c -usb -usbdevice
> > host:008.002 -acpi -vcpus 8 -vcpu_avail 0xff -net
> > nic,vlan=0,macaddr=00:16:3e:4e:c5:0c,model=e1000 -net
> > tap,vlan=0,ifname=vif1.0-emu,bridge=br0,script=no,downscript=no -M 
> > xenfv
> Could you test qemu-xen with configuration, to test to see if it
> works?  If it doesn't we probably need to report this upstream --
> otherwise it's just a matter of fixing it in our tree.
I'll have to rebuild my packages to test that - my build only includes
qemu-dm.

Gordan

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