The following is a message sent to the group on Wed, 26 Sep 2007 (I'm getting 
this via the web since this was sent before I joined the list, and started 
keeping my own copies of everything):

> Kern,
> I think I have found the cause of the MTEOM errors that I have been 
> experiencing from time to time. These MTEOM errors are not caused by Bacula.
>
> In the past few months, I have rebooted my Quantum PX502 library a few 
> times (once every two months or so) while a tape was mounted in the 
> drive. This caused the HP (LTO-3 nFC) tape drive in the library to write 
> an MTEOM marker to the mounted tape, which made it impossible for Bacula 
> to write beyond that point (although reading was possible).
>
> Basically, Quantum told me to unmount the tape before I ever 
> powercycle/reboot the library again.
>
> The tapes can be recovered by backing them up and reformatting them (to 
> get rid of the MTEOM marker).
> 
> Basically, my tapes that I thought were bad are actually recoverable.

I was wondering how I format the tape.  Was using "mt -f /dev/nst0 erase" 
supposed to be used?  There was a reply to this from Kern mentioning that this 
would be added to the manual as a potential gotcha, but I have searched through 
them, and not found anything.  Can anyone shed the missing piece of information?

Thanks,

Craig



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