Re: Why QCOW1? (was: [PATCH v2] kvm tool: add QCOW verions 1 read/write support)

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On Fri, Apr 15, 2011 at 3:05 PM, Stefan Hajnoczi <stefanha@xxxxxxxxx> wrote:
> People don't have existing QCOW1 images they want to boot from :).
>
> They have vmdk, vhd, vdi, or qcow2.  You can use qemu-img to convert
> them to raw.  You can use qemu-nbd if you are desperate to boot from
> or inspect them in-place.
>
> But I think the natural path for a native Linux KVM tool is to fully
> exploit file systems and block layer features in Linux instead of
> implementing a userspace block layer.

For optimum performance, sure, but we want to support non-native
images for usability reasons.
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