[libvirt-users] Create qcow2 v3 volumes via libvirt

[Gionatan Danti]

Il 01-05-2018 22:25 Eric Blake ha scritto:
> That's fairly accurate.  Also, mixing internal and external snapshots
> at the same time is likely to trigger some known data-loss problems,
> if you are not extremely careful, so for now, just pick one or the
> other and stick to it (I hope to someday enhance qemu to refuse
> operations that would risk data loss, or to perform a slower version
> of the operation with the same result instead of its current fast but
> wrong implementations, when dealing with mixed-internal/external
> backing chains).
> 
> https://lists.gnu.org/archive/html/qemu-devel/2018-04/msg00865.html

Ok, I think I'll continue to use RAW images + filesystem snapshots + 
external snapshot when required.
It is unfortunate that we have no GUI to manage external snapshots. I 
even remember that external snapshot remove was not supported - I had to 
use the --metadata flag and a plain "rm" to remove them (or using 
--no-metadata in the first place)[1]. Does it remain the current 
behavior?

Thanks.

[1] 
https://www.redhat.com/archives/libvirt-users/2015-September/msg00037.html

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Danti Gionatan
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