Re: [fedora-virt] Is this possible in F13?

[Li Ming]

On 03/23/2010 03:44 PM, Ales Kozumplik wrote:
>  Hi Liam,
>
>  On 03/23/2010 04:03 AM, Li Ming wrote:
> > If it works on F13, do we have some specific steps?
> > 1. how to tell anaconda to open /dev/virio-ports/...ananconda.log,pass
> > some args during boot? or this is default?
>
>  This is not implemented, open a bug for this and assign it to me please.
>  It's not going to make F13 probably. 
Thanks Ales,I filed a bug :
https://bugzilla.redhat.com/show_bug.cgi?id=576439

Liam

Is this possible in F13?

[James Laska]

On Wed, 2010-03-24 at 10:52 +0800, Li Ming wrote:
>  On 03/23/2010 03:44 PM, Ales Kozumplik wrote:
>  > Hi Liam,
>  >
>  > On 03/23/2010 04:03 AM, Li Ming wrote:
>  >> If it works on F13, do we have some specific steps?
>  >> 1. how to tell anaconda to open /dev/virio-ports/...ananconda.log,pass
>  >> some args during boot? or this is default?
>  >
>  > This is not implemented, open a bug for this and assign it to me please.
>  > It's not going to make F13 probably.
>  
>  Thanks Ales,I filed a bug :
>  https://bugzilla.redhat.com/show_bug.cgi?id=576439 
Can you help me understand what anaconda support is missing?  I
understand that may be beneficial for built-in installer support for
communicating logs over a virtio-serial device.  

However, I'm curious if this is a working solution at a basic level.  Is
it possible to communicate between F13 virt guest and host over a
virtio-serial device at all?  How does communication over the
virtio-serial device work, is it a network, a pipe, a block device?
Assuming that works, are there known problems that would restrict using
this same solution inside stage2 anaconda?

Thanks,
James

Is this possible in F13?

[Amit Shah]

On (Wed) Mar 24 2010 [07:31:11], James Laska wrote:
>  On Wed, 2010-03-24 at 10:52 +0800, Li Ming wrote:
>  > On 03/23/2010 03:44 PM, Ales Kozumplik wrote:
>  > > Hi Liam,
>  > >
>  > > On 03/23/2010 04:03 AM, Li Ming wrote:
>  > >> If it works on F13, do we have some specific steps?
>  > >> 1. how to tell anaconda to open /dev/virio-ports/...ananconda.log,pass
>  > >> some args during boot? or this is default?
>  > >
>  > > This is not implemented, open a bug for this and assign it to me please.
>  > > It's not going to make F13 probably.
>  > 
>  > Thanks Ales,I filed a bug :
>  > https://bugzilla.redhat.com/show_bug.cgi?id=576439
>  
>  Can you help me understand what anaconda support is missing?  I
>  understand that may be beneficial for built-in installer support for
>  communicating logs over a virtio-serial device.
>  
>  However, I'm curious if this is a working solution at a basic level.  Is
>  it possible to communicate between F13 virt guest and host over a
>  virtio-serial device at all? 
Yes.

>   How does communication over the
>  virtio-serial device work, is it a network, a pipe, a block device? 
It's a char device, available in /dev/vport*. The host (libvirt) can
create a device and give it the 'org.fedoraproject.anaconda.log' name so
that anaconda just has to open
'/dev/virtio-ports/org.fedoraproject.anaconda.log' and start writing its
logs to it. Assuming POLLOUT is set for the device.

>  Assuming that works, are there known problems that would restrict
> using
>  this same solution inside stage2 anaconda? 
I'm not sure about anaconda internals, but the virtio-serial device is a
simple char device that supports open/read/write/poll/close.

		Amit