Automating executing commands on multiple tapes and changing (loading) them

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Old 11-05-2009
Automating executing commands on multiple tapes and changing (loading) them

The thing that we need to be able to do is:

- Scanning tapes from failed backup jobs with bscan (a bacula command)
- loading the next tape with the mtx command

Bscan does unload tapes but does not load them.

Bscan comes with this message when it's done with a tape:

Mount Volume "XO7563L3" on device "Tape1" (/dev/nst0) and press return when ready:

The script doesn't have to be fancy like determine in what slot the volume is. It would be enough just loading the tapes from let's say slot 10 to 24 and we need to make sure they are loaded in the right order into the tape library.

The thing that we ran into is that when the above message appears it normally should input the answer but in this case it should run another command first and then input the answer.

Is Expect the program for the job and how to do it?

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AMVERIFY(8)						      System Manager's Manual						       AMVERIFY(8)

amverify - check an Amanda tape for errors SYNOPSIS
amverify config [ slot [ runtapes ] ] DESCRIPTION
Amverify reads an Amanda format tape and makes sure each backup image can be processed by amrestore and, if possible, the appropriate restore program (e.g. tar). Amverify runs amrestore on each file of the tape and pipes the output to a restore program (if available) with an option to create a cata- logue of the backup. The catalogue itself is discarded. Only the success or failure of the operation itself is reported. If the backup image cannot be processed by the restore program, e.g. if it was written on a different operating system, the image is sent through dd to /dev/null. This still determines if the tape is readable, but does not do any internal consistency check on the image. If config is set up to use a tape changer, the slot argument may be used to choose the first tape to process. Otherwise, the current slot is used. The runtapes configuration parameter determines how many tapes are processed unless it is specified on the command line. See the amanda(8) man page for more details about Amanda. AUTHOR
Axel Zinser <> SEE ALSO
amrestore(8), amanda(8), amverifyrun(8) AMVERIFY(8)

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