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Re: [Qemu-discuss] How to run qemu with -nographic and -monitor but stil

From: Ciro Santilli
Subject: Re: [Qemu-discuss] How to run qemu with -nographic and -monitor but still be able to send Ctrl+C to the guest?
Date: Tue, 10 Apr 2018 01:10:01 +0100

On Mon, Apr 9, 2018 at 1:33 PM, Thomas Huth <address@hidden> wrote:
> On 08.04.2018 12:39, Ciro Santilli wrote:
>> https://stackoverflow.com/questions/49716931/how-to-run-qemu-with-nographic-and-monitor-but-still-be-able-to-send-ctrlc-to
>> I have just found out that if you run QEMU with `-monitor
>> telnet::45454,server,nowait -nographic`, then Ctrl-C kills the QEMU VM
>> instead of generating SIGINT on the guest:
>> https://unix.stackexchange.com/questions/167165/how-to-pass-ctrl-c-to-the-guest-when-running-qemu-with-nographic/436321#436321
>> However, I don't want to remove `-monitor` because it is convenient to
>> automate monitor commands, e.g. it allows me to create a helper script
>> that does:
>>     echo 'savevm my_snap_id' |  telnet localhost 45454
>> Is there a way to both keep my `Ctrl-C` and `-monitor` working with
>> `-nographic`?
>> Full QEMU command:
>>     qemu-system-x86_64 -append 'root=/dev/vda console=ttyS0' -kernel
>> 'bzImage' -drive file='rootfs.ext2.qcow2,if=virtio,format=qcow2'
>> -nographic -monitor telnet::45454,server,nowait
> I think you need a chardev with signal=off for that. Try something like:
> qemu-system-x86_64  -nographic -monitor telnet::45454,server,nowait \
>   -chardev stdio,id=s1,signal=off \
>   -serial none -device isa-serial,chardev=s1

I tried that and Ctrl+C does get passed to the guest as I wanted.

However, when I do this, I noticed that I can't pass Ctrl+A X to
easily quit QEMU (I know I can do quit on the monitor).

Is there a way to also keep Ctrl+A X working, in addition to having
Ctrl+C passed to the guest?

>  HTH,
>   Thomas

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