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Peter Krempa authored
The domain definition stored with a checkpoint isn't used currently apart from matching disks when creating a new checkpoints. As some users of the incremental backup API want to provide backups in offline mode under their control (obviously while compying with our documentation on how the on-disk state should be handled) and then want to define the checkpoint for live use, supplying a <domain> sub-element is overly complex and not actually needed by the code. Relax the restriction when re-defining a checkpoint so that <domain> is not necessary and add (alibistic) documentation saying that future actions may not work if it's missing. Signed-off-by:
Peter Krempa <pkrempa@redhat.com> Reviewed-by:
Daniel Henrique Barboza <danielhb413@gmail.com>