[pve-devel] Live storage migration v5

[Fabian Grünbichler]

On Tue, Oct 25, 2016 at 01:30:57PM +0200, Wolfgang Bumiller wrote:
> And the old disks don't get deleted yet (which is useful during testing
> but should probably not be the default. But it might even be useful to
> make this optional (similar to how we have a delete flag in move_disk).

this will be a bit complicated, as we are traversing node boundaries
here. with "move disk", we can simply add the source disk as "unused
disk". with this proposed live-migration for local disks, the source
disk is not just unused, but also orphaned (the VM it belongs to does
not exist on the same node anymore!).

not sure how we should/could handle this in a sane way (for offline
migration, we also don't offer this option btw - if the migration fails,
we clean up on the target node, if it succeeds, the local source disks
are gone).