a477189575
prior to the introduction of snapshot as volume chains, volume names of
almost arbitrary form were accepted. only forbid filenames which are
part of the newly introduced namespace for snapshot files, while
deprecating other names not following our usual naming scheme, instead
of forbidding them outright.
Fixes: b63147f5df "plugin: fix volname parsing"
Co-authored-by: Shannon Sterz <s.sterz@proxmox.com>
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Tested-by: Shannon Sterz <s.sterz@proxmox.com>
Link: https://lore.proxmox.com/20250731111519.931104-2-f.gruenbichler@proxmox.com