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Old 02-12-2009, 04:45 AM   #1
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Check tape drive availability (full tape)

Hi Everyone,

I have a HP StoregeWorks DAT 72 tape drive and a pretty simple set of backup scripts from machines across my network. But my problem is with the tape recorder itself. I've written a quite nifty bash script to do the usual mt stuff like writing/reading/erasing etc. But i have yet to figure out how i can tell if the tape is full.

I know 'tar' gives a error message about tape drive beeing full when trying to write to it, but i don't want to do a "fake" write each time to check if I have to change tape.

My best bet was 'mt -f /dev/nst0 status' but it reports ONLINE even though tar reports that tape is full. Does anyone have experience with this?

My goal is to run a script from crontab each day to check if i need to switch tapes. The scriptwriting itself is not the problem. It's the checking if tape is full part.


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