This series of patches extends our existing QEMU backup integration
for PVE such that it can be used for a in-development external-backup
plugin API.
This includes among other things an API for backup access and teardown
as well as dirty-bitmap management. See the separate patches for more
details and check [v7] and [v8] of this series on the list. The former
is the last revision by Fiona which was already very advanced,
Wolfgang picked that up and extended/adapted it slightly to match
needs that he found during implementation of a test provider and from
feedback of (future) external backup provider like Bareos and Veritas.
This was mainly done to get the QEMU build out for broad QA, we can
still change things here as long as the rest of the series is not yet
applied.
[v7]: https://lore.proxmox.com/pve-devel/20250401173435.221892-1-f.ebner@proxmox.com/
[v8]: https://lore.proxmox.com/pve-devel/20250403123118.264974-1-w.bumiller@proxmox.com/
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
