As per the discussion on gentoo-dev, and more precisely this post
packages that put stuff in /lib/rcscripts should use /$(get_libdir)/rcscripts
this package was merged into lvm2 by upstream, and should be removed from the tree instead ultimately.
QA: Fix it in the meantime if you want.
(In reply to comment #1)
> this package was merged into lvm2 by upstream, and should be removed from
> the tree instead ultimately.
done, wrt bug 461382