Re: [Qemu-devel] [Bug 1662050] Re: qemu-img convert a overlay qcow2 image into a entire image

[858585 jemmy]

Hi wayen:
    Which version are you used?
    I also find this problem on old version qemu, and i write a patch
for it. It works.
    I'm not sure the mainline version have solve this problem.
    what command are you used?

On Mon, Apr 10, 2017 at 10:14 AM, wayen <address@hidden> wrote:
> Is there any way to remove holes from qcow2 overlay images? It's very
> important to me. I am looking forward to your reply.
>
> --
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> https://bugs.launchpad.net/bugs/1662050
>
> Title:
>   qemu-img convert a overlay qcow2 image into a entire image
>
> Status in QEMU:
>   Incomplete
>
> Bug description:
>   I have a base image file "base.qcow2" and a delta qcow2 image file
>   "delta.qcow2" whose backing file is "base.qcow2".
>
>   Now I use qemu-img to convert "delta.qcow2" and will get a new image
>   file "new.qcow2" which is entire and equivalent to combination of
>   "base.qcow2" and "delta.qcow2".
>
>   In fact,I don't want to get a complete image.I just want to convert
>   delta qcow2 image file "A" to a New delta overlay qcow2 image "B"
>   which is equivalent to "A". So the "new.qcow2" is not what i want. I
>   have to admit that this is not bug. Could you please take this as a
>   new feature and enable qemu-img to convert qcow2 overlay itself?
>
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