After doing a restore from a Level 0 I try to rollforward the logs that were created with ontape -c . The system reads the tape for 5 secs or so then says:
rollforward will begin with log xxxx
Unexpected end of tape (errno 0).
My LTAPESIZE is set to 8 GB and the log is most certainly before that.
This has happened with 3 different DAT tapes from different backup cycles.