On Thu, Apr 5, 2018, 2:33 PM Nicolas Ecarnot <nico...@ecarnot.net> wrote:

> Hello,
>
> Amongst others, I have one 3.6 DC working very well since years and all
> based on GlusterFS.
> When having a close look (qemu-img info) on the images, I see their
> format is all RAW and not QCOW2.
>

Raw sparse.


> I never noticed or bothered before, but I'm wondering :
> - is it by design?
>

Yes, for performance reasons.

- it is something we can change (I'd prefer qcow2)
>

No.

- it there some limitations?
>

Not that I know.


> And finally, I have the same questions about NFS storage domains.
>

Same as Gluster, and other file-based storage.
Y.


> Thank you.
>
> --
> Nicolas ECARNOT
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