[5168] in linux-scsi channel archive
Re: Tape problem
daemon@ATHENA.MIT.EDU (Richard Fish)
Wed Nov 18 21:03:59 1998
Date: Wed, 18 Nov 1998 08:26:08 -0700
From: Richard Fish <rjf@estinc.com>
To: linux-scsi@vger.rutgers.edu
Tekno Soft Snc wrote:
>
> Hi All,
>
> I need help to restore a tar backup from a tape that have some
> broken blocks :-(((!!!! The box is a Linux 2.0.35 with AHA2940UW
> and the tape is a TANDBERG model TDC 4100 Rev: =07. The cartrige
> have 1,2Gb of capacity (950 ft. = 289,56mt). I've tried with some
> variant of:
>
> tar --ignore-zeros --ignore-failed-read -xvf /dev/st0
>
> or
>
> dd if=/dev/st0 of=tapedump conv=noerrors count=2000000
> dd if=/dev/st0 of=tapedump skip=1056024 conv=noerrors count=2000000
> ^---- Start of broken blocks
> reported by other dd's
dd "skips" by reading and throwing away the values.
You could try seeking past the erros with mt. For example:
mt -f /dev/nst0 seek 1056024
dd if=/dev/nst0 of=tapedump ....
or
tar -xvf /dev/nst0
--
Richard Fish Enhanced Software Technologies, Inc.
Software Developer 4014 E Broadway Rd Suite 405
rjf@estinc.com Phoenix, AZ 85040
(602) 470-1115 http://www.estinc.com
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