NW calculates the %used value by referencing the Volume Default Capacity. 
However, on a tape, it will be set to full only under these conditions:
  - When NW could not recover from a write error
  - When the physical end of tape has been reached

So if you suspect a premature full, most likely case #1 occurred.

The message said that NW positioned the tape to the logical end-of-tape (LEOT = 
2 consecutive file marks). Beyond that spot there is no more valid data. In 
fact, NW tells you that he had to move the tape 694 filemarks forward (fsf = 
file space forward, a SCSI command) until he reached this point.

+----------------------------------------------------------------------
|This was sent by carsten_reinfeld AT avus-cr DOT de via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER