If we allow target instances to be partial or pending, we can build on
top of this to allow updates to be split into two phases: ‘acquire’ (which
takes an available source instance and copies it (temporarily partial) to
a pending target instance; and ‘install’ (which takes a pending target
instance and installs it as an installed target instance).
This commit introduces a file/directory and partition prefix naming
scheme to identify partial and pending instances.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: https://github.com/systemd/systemd/issues/34814
Philip Withnall
Daan De Meyer
Lennart Poettering