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


From: bala suru
Subject: Re: [Qemu-devel] unable to access the serial port on the Vm
Date: Mon, 12 Sep 2011 15:49:53 +0530

Hi,
Sorry for missing out the CC in the previous mail .
 
Can I do this on the running VMs ..?,
I'm using opennebula to spawn the VMs, so it would be good if edit before spawning the VMs..
 
regards
Bala   

On Mon, Sep 12, 2011 at 2:56 PM, Stefan Hajnoczi <address@hidden> wrote:
I sent before noticing that your email dropped address@hidden
from the CC list again.

Please use Reply-All when responding on mailing lists.  That way the
mailing list stays CCed and others can contribute to the discussion.

On Mon, Sep 12, 2011 at 10:25 AM, Stefan Hajnoczi <address@hidden> wrote:
> On Mon, Sep 12, 2011 at 10:08 AM, bala suru <address@hidden> 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
>


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