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- Path: sparky!uunet!munnari.oz.au!ariel!ucsvc.ucs.unimelb.edu.au!lugb!luxor.latrobe.edu.au!ccvj
- From: ccvj@luxor.latrobe.edu.au (Vicki Jordan)
- Newsgroups: comp.unix.questions
- Subject: tape read errors can I recover?
- Summary: tar errors
- Message-ID: <1992Aug28.011340.29284@lugb.latrobe.edu.au>
- Date: 28 Aug 92 01:13:40 GMT
- Sender: news@lugb.latrobe.edu.au (USENET News System)
- Organization: La Trobe University
- Lines: 36
- Originator: ccvj@luxor.latrobe.edu.au
-
-
- Does anyone know if I can recover from the following tape reading errors?
- Situation - a researcher has had some data sent out from China on a cartridge
- tape which says "use tar xvf to extract". We have a SGI machine with
- such a drive so I tried to read it. I tried to dd the whole tape and
- tar -x the result and got the same errors.
-
- If this is not recoverable (and I guess not) what would have caused the
- errors: damaged tape? (at source or in transit?) system incompatabilities?
- Since the person in question has to work on this data and has to now
- bide his time waiting for a replacement I want to minimise the possibility
- of having problems with a replacement tape.
-
- Thanks...
-
- Vicki Jordan
- -------------------
- iris2 # tar xvf /dev/tape
- tar: Directory checksum error.
- iris2 # dd if=/dev/tape conv=swab | tar tef -
- 330121.89h
- tar: Directory checksum error. Continuing..........................................................OK
- 330121.89p
- tar: Directory checksum error. Continuing..OK
- 330121.90h
- tar: Directory checksum error. Continuing..........................................................OK
-
- All of the files have readable data interspersed with garbage followed by
- readable data; eg:
-
- 9061273203007 2 2 38 1 1 2 11 0
- 9061273203007 3 1 15 9 4 . ^[.^B.^S;^N-0
- 7^K^R^G^F^G^V^Z ... about 20 lines of garbage
- ^S^S^V^G^_^F^S^Q^U 1 41 0
- 9061273203007 3 1 14 9 4 1 41 0
- 9061273203007 3 2 9 9 4 1 41 0
-