Re: [libvirt-users] host to VM serial device configuration

On Sat, Jan 15, 2011 at 01:09:07AM +1100, Justin Clift wrote: > On 14/01/2011, at 9:39 PM, Daniel P. Berrange wrote: >> On Fri, Jan 14, 2011 at 11:50:01AM +0800, Osier Yang wrote: >>> 于 2011年01月12日 23:11, John Paul Walters 写道: >>>> Hi, >>>> >>>> I'm trying to get a virtual serial device up and running between >>>> my host >>>> and virtual machine with a device name on the host. I'm using >>>> libvirt >>>> 0.8.3 and qemu 0.13.0. The challenge that I'm running into is >>>> that I'm >>>> able to get a serial device, but I cannot fix it to a pre- >>>> defined device >>>> name. For example, I'm using the following in my VM's xml file: >>>> >>>> <serial type='pty'> >>>> <source path='/dev/pts/19' /> >>>> <target port='0' /> >>>> </serial> >>>> >>>> As I said this works, but it doesn't set the host side to /dev/ >>>> pts/19. >>>> Is there any way to do this? >>> >>> I could reproduce it, trying to find out why. >> >> When using type='type', the source path is an output only >> attribute. You can't control it yourself, it is autoassigned >> by the kernel as it sees fit. > > Any idea if it's the kind of thing whose name could be selected or > changed > using udev rules? No, these aren't normal devices. This is a magic filesystem which creates entries on the fly.