I know this has been discussed in length before, but I have just seen a 
behaviour that can explain some of the problems with tapes being considered 
"full" when they are actually only partially filled.

With my setup I have 4 scsi devices of which I normally only use two, the tape 
streamer and a scanner. I normally keep the tape streamer open to bacula 
because 
then I won't forget to mount the tape prior to the back-up cycle. Yesterday. 
however, I noticed when operating the scanner that the tape device suddenly 
started rewinding the tape apparently initiated by activity on the scanner. Of 
course I should have remounted the tape - but forgot. Next morning - the 
back-up 
schedule is at 2 o'clock at night - the tape was ejected and claimed full by 
bacula and the job was waiting for the mounting of a new appendable volume. I 
changed the status of the ejected volume from full to append and remounted it 
and the back-up job ran to completion without further problems.

So apparently an activity on another scsi device on the same cable may cause 
the 
tape device to rewind and thus get out of sync with bacula. I don't know if 
this 
is a problem which may be fixed by bacula but I doubt it. With this behaviour 
in 
mind I have started to unmount the tape when the back-up is completed and to 
mount it again shortly before start of next back-up cycle.

-- 
Erik P. Olsen, Civilingeniør, MSc
Solsortvej 30, DK-2000 Frederiksberg, Denmark
Phone: +45 38346480, Fax: +45 32106480, Mobil: +45 40765300

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Bacula-users mailing list
Bacula-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users

Reply via email to