On Wed, Jun 24, 2020 at 01:26:34PM +0200, Szymon Lukasz wrote: > In this series resize notifications are only supported for the stdio > backend but I think it should be easy to add support for the vc backend. > Support for tty/serial backends is complicated by the fact that there is > no clean way to detect resizes of the underlying terminal.
In a libvirt managed scenario it is typical to have the virtio console connected to a UNIX socket. It would be desirable to have a way to deal with resizes there. QEMU socket chardev (TCP & UNIX socket) supports a "telnet" protocol addition. Currently it doesn't almost nothing useful, but in theory we could wire up support for the telnet resize message: https://tools.ietf.org/html/rfc1073 Another option is to allow dealing with resizes out of band, via the QMP monitor. ie we can introduce a qmp_chardev_winsize command that a client app can use to trigger the resize message to the guest OS. >From libvirt's POV, this would be quite easy to support & useful to have. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
