On a system with 2GB out of 4GB available in /var, a "supportconfig -l" caused
"No space left on device" errors. As it seems the total amount of log files is
simply too much. The sum of all compressed files is about 1GB (compression rate
may be as high as 95%).
The problem was that problem had been reported to support that happened in mid
of last month, so older logs are desired.

However just adding *all* logs is a poor idea. In contrast hb_report allows to
set a start and an end point-in-time where logs are examined.

Obviously such an option would be quite helpful for supportconfig, too.