Re: [Qemu-devel] unable to access the serial port on the Vm

[Stefan Hajnoczi <stefanha@gmail.com>]

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On Mon, Sep 12, 2011 at 10:25 AM, Stefan Hajnoczi <stefanha@gmail.com> wrote:
> On Mon, Sep 12, 2011 at 10:08 AM, bala suru <balaqemu@gmail.com> wrote:
>> This is what I got when I run the  "ps aux | grep qemu"
>> root      4748  3.1  0.6 122208 25032 ?        Sl   11:52   5:13
>> /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 64 -smp 1 -name one-26 -uuid
>> 16025c13-421f-143c-563b-07661fa59fe3 -nographic -chardev
>> socket,id=monitor,path=/var/lib/libvirt/qemu/one-26.monitor,server,nowait
>> -monitor chardev:monitor -no-acpi -boot c -drive
>> file=/srv/cloud/one/var//26/images/disk.0,if=ide,index=0,boot=on,format=raw
>> -net nic,macaddr=02:00:c0:a8:7a:07,vlan=0,name=nic.0 -net
>> tap,fd=29,vlan=0,name=tap.0 -serial none -parallel none -usb
>> oneadmin  8137  0.0  0.0   3324   788 pts/1    S+   14:36   0:00 grep qemu
>>
>> Still I have not understood that  "Normally the emulated serial port can be
>> redirected to your current
>> terminal by launching qemu with "-serial stdio" How to make this through
>> qemu .
>
> Thanks for posting the ps output.  The reason why your serial is not
> working is because libvirt is starting QEMU with "-serial none".  That
> means your virtual machine does not have an emulated serial port.
>
> You can fix this from virt-manager by editing the virtual machine
> Details | Add Hardware | Serial and setting Device Type to Pseudo TTY
> (pty).  Then it should be possible to view the serial console while
> the VM is running.
>
> If you want to use virsh instead of virt-manager, check for the domain
> XML syntax here:
> http://libvirt.org/formatdomain.html#elementsConsole
>
> Stefan
>