[virt-tools-list] Implementing external snapshots and hierarchical snapshot view in virt-manager

[Pavel Hrdina]

On Fri, Aug 24, 2018 at 03:06:43AM +0300, Povilas Kanapickas wrote:
> Hey,
> 
> First, let me thank you for the impressive piece of software that
> virt-manager is.

Hi,

nice to hear that :)

> I'd like to implement the external snapshots and hierarchical snapshot
> view functionality. Are there any hard known blockers that would prevent
> patches from being merged? Do the virt-manager maintainers think these
> are worthwhile features to have?
>
> The hierarchical snapshot view would make external snapshots more
> convenient to users, because it will expose the dependency relationships
> between different image files. I think it is important given how easy is
> to accidentally damage dependent VMs by e.g. deleting wrong file. The
> visibility of full hierarchy would also allow limited initial
> implementation where few operations would be allowed to non-leaf images.
> Keeping the current linear list of snapshots would make this kind of
> compromise very weird from UX perspective.
> 
> Please tell me what you think and in case these are not bad ideas I will
> come back with more detailed proposals and mockups.

This feature is definitely good idea and there is already BZ [1] to
track that feature in RHEL.  The main issue right now is that it's
still not fully supported by libvirt [2] which is kind of hard blocker.

Pavel

[1] <https://bugzilla.redhat.com/show_bug.cgi?id=1403951>
[2] <https://bugzilla.redhat.com/show_bug.cgi?id=1402581>
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