Re: [Xen-users] Exporting a PCI Device

[Jan Kalcic <jandot@xxxxxxxxxxxxxx>]

>> Hi Todd,
>>
>> the PCI device which I would need to "share" is the fibre 
>> channel card connected to two different storage, on of this is 
>> the VMs repository which has to be visible to dom0 and the 
>> other one is the data storage for VMs which, obviously, has to 
>> be visibile to VMs. So the solution would be using two 
>> different fibre channel cards, right?
>>     
>
> What I would do is make all storage available to the dom0 and use
> regular methods to export it to the domU.
> In other words: treat dom0 as a very fancy piece of hardware that's
> between your kernel and the fibre-channel attached storage. For generic
> solutions the Virtual Block Device should be fast enough, otherwise you
> should probably consider a separate server, dedicated to that single
> task.
>
>   
Exporting the device to domU as a Physical Block Device, let's suppose
/dev/sda, when I migrate the VMs to another server I have the problem
that device has to be re-attached, don't I? Or if the same device still
exists on the other server the VMs has that device still attached?

Thanks,
Jan


> I don't know if you are going to loose any fibre-channel advantages, but
> I figure you also reduce administrative complexity to dom0's only.
>
> - Joris
>
>
>   


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