If the disk is full, but not so full that directory entries can't be
created for compressed log output further rotation attempts fail because
the empty files are in the way. On subsequent rotation attempts you'll
get messages like
error: error creating output file /var/log/debug.1.gz: File exists
Without manual intervention, further log rotation will fail and the disk
is guaranteed to fill up. Since the problem now affects the entire
system, the severity is arguably "critical" rather than "wishlist".
--
Brian Ristuccia