On Thu, Mar 19, 2015 at 01:29:37PM +0530, Neel Basu wrote: > HI!, > > I am using virt-manager GUI. There I can add a `Console Device` through > Add Hardware. I can add a virtio pty WITHOUT restarting the VM. also I get > a pty allocated to host machine say `/dev/pty/M` > > My expectation is this `host:/dev/pty/M` is connected with a > `guest:/dev/ttyN`. so If I open minicom or screen and write to > `host:/dev/pty/M` it will be propagated to 'guest:/dev/ttyN'. Is my > expectation correct ? > > If it is correct how will I know what is the guest tty allocated against > this host pty ? No, that's not how it works. The <console> devices are exposed to the guest as /dev/hvcNN devices. Starting with NN==0 as per the dumpxml output

> Similar to console device I can add a Serial device but that requires a > reboot of the guest VM. However I tried that though I prefer to do it > without a guest restart. > > <serial type='pty'> > <source path='/dev/pts/1'/> > <target port='0'/> > <alias name='serial0'/> > </serial> > > here also I expected host:/dev/pts/1 is paired with /dev/ttyS0 but couldn't > communicate. The serial port device supported is a 1990 era ISA bus serial port so there's no hotplug for that. Only the paravirt consoles can be hotplugged. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|