[libvirt] [PATCH 2/5] conf: Introduce raw disk string passthrough

[Daniel P. Berrange]

On Tue, Sep 09, 2014 at 10:45:45AM +0200, Peter Krempa wrote:
> This patch adds a new disk type "raw" that can be used twofold:
> 
> 1) To pass arbitrary strings as disk sources to the hypervisor of
> choice. This allows to use not-yet-supported storage specification
> formats.
> 
> 2) To return backing chain element names that libvirt doesn't yet know
> how to parse. Backing chain elements may specify names that libvirt
> isn't able to parse. To allow us reporting it back to the user,
> unparsable strings will be reported as disk type="raw".
> 
> To avoid attempts to label or do other operations on "raw" disks mark
> them as remote and unsupported by the storage driver explicitly.
> 
> Tests for the new format are being added separately.

NACK. Arbitrary passthrough or reporting of unsupported features is
an explicit non-goal of the libvirt XML. We have QEMU command line
passthrough for that goal. 

Regards,
Daniel
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