[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [RFC] Allow 'qemu-img convert' to preserve the backing
Re: [Qemu-devel] [RFC] Allow 'qemu-img convert' to preserve the backing file
Wed, 28 May 2008 10:53:09 +0100
Marc Bevand writes:
> Currently if qemu-img convert is used to convert for example a qcow1
> image (with a backing file) to a qcow2 image, the resulting image
> will have no backing file.
This kind of thing ought to be discussed with qemu upstream too,
surely ? Perhaps even implemented there first.
> In order to preserve the backing file (to save disk space), qemu-img
> should offer a command line option to enable the feature. For this
> it needs to be made aware of BlockDrivers supporting backing files.
The best way to do this will probably involve a certain amount of
restructuring of the interface to the block drivers. So definitely
something to discuss with upstream.