[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] CharUDP - Connection refused
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] CharUDP - Connection refused |
Date: |
Mon, 5 Oct 2015 17:18:02 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 04/10/2015 17:01, poma wrote:
>
> qemu-system-x86_64 ... \
> -chardev
> udp,id=charserial0,host=127.0.0.1,port=4555,localaddr=127.0.0.1,localport=4556
> \
> -device isa-serial,chardev=charserial0,id=serial0
>
>
> # netstat -an | grep 4555
> udp 0 0 127.0.0.1:4556 127.0.0.1:4555
> ESTABLISHED
>
> How is it supposed to work?
You should use "nc -up 4555 localhost 4556". Just like QEMU needs both
ends, so does nc (the source host can also be specified, optionally,
with nc's -s option).
Paolo
>
> = DOMAIN:
>
> $ hostnamectl status | egrep Chassis\|Virtualization
> Chassis: vm
> Virtualization: kvm
>
> $ cat /proc/cmdline
> BOOT_IMAGE=vmlinuz0 initrd=initrd0.img
> root=live:CDLABEL=Rawhide-Xfce-Live-1003 rootfstype=auto ro rd.live.image
> console=tty0 console=ttyS0
>
> $ systemctl status address@hidden
> ● address@hidden - Serial Getty on ttyS0
> Loaded: loaded (/usr/lib/systemd/system/address@hidden; disabled; vendor
> preset: disabled)
> Active: active (running) since Sun 2015-10-04 09:02:06 EDT; 48s ago
> Docs: man:agetty(8)
> man:systemd-getty-generator(8)
> http://0pointer.de/blog/projects/serial-console.html
> Main PID: 1109 (agetty)
> CGroup: /system.slice/system-serial\x2dgetty.slice/address@hidden
> └─1109 /sbin/agetty --keep-baud 115200 38400 9600 ttyS0 vt220
>
> Oct 04 09:02:06 localhost systemd[1]: Started Serial Getty on ttyS0.
>
>
> = SW VERSIONS:
>
> $ qemu-system-x86_64 -version
> QEMU emulator version 2.4.0.1 (qemu-2.4.0.1-2.fc24), Copyright (c) 2003-2008
> Fabrice Bellard
> $ libvirtd --version
> libvirtd (libvirt) 1.2.20
> $ virt-manager --version
> 1.2.1
>
> $ rpm -q qemu libvirt virt-manager
> qemu-2.4.0.1-2.fc24.x86_64
> libvirt-1.2.20-1.fc24.x86_64
> virt-manager-1.2.1-3.fc24.noarch
>
>
> [1]
> char: udp chardev shouldn't require an explicit open.
> http://patchwork.ozlabs.org/patch/311730
>
>