Re: [Qemu-devel] qemu-img

[Lennart Sorensen]

On Thu, Feb 12, 2009 at 06:15:57PM +0100, D. Schreiber wrote:
> is it possible to add "pipe"-Mode like this?
> 
> dd if=/dev/sda | qemu-img convert -f raw - -O qcow2 newImage.img

Does this work:

dd if=/dev/sda | qemu-img convert -f raw <(dd if=/dev/sda) -O qcow2 newImage.img

> I know i can read directly from device, but in some cases (i.e. get data
> from netcat) it would be nice to convert from stdin. Alternative: read
> from fifo.
> 
> Another wish is to mount an compressed qcow-Image as loop-Device.

I suspect you have to write a loop device handler for the kernel to
support that.  Sounds perfectly doable.

-- 
Len Sorensen