Are you sure the tar archive is not compressed (gzipped) ?
Try xzvf instead of xvf.
Jerry Lynde wrote:
>
> At 01:07 PM 3/6/2001, Yura Pismerov wrote:
> >Jerry Lynde wrote:
> > >
> > > At 12:39 PM 3/6/2001, Christoph Scheeder wrote:
> > > >Hi,
> > > >
> > > >i hope you tried the command
> > > > dd if=/dev/nst0 bs=32k skip=1 | tar -xvf -
> > > >and not the one you have in your mail....
> > > >
> > > >as you are running linux, try pulling the image to disk with
> > > > dd if=/dev/nst0 of=file01
> > > >and then use
> > > > dd if=file01 bs=32k skip=1 | tar xvf -
> > > >on it.
> > > >dd seems to have problems with some scsi-tapes and the skip option.
> > > >hope it helps
> > > >Christoph
> > > >
> > > >Jerry Lynde schrieb:
> > > >
> > > > > mt -f /dev/nst0 rewind
> > > > > dd if=/dev/nst0 bs=32 skip=1 | tar xv -
> > > > --^-- --^--
> > > > missing k missing f
> > > > >
> > > > > but when I use the tar (yes, it's gtar, really) it complains
> > > > > that the file is not a valid archive. I can restore files using
> > >
> > > I wasn't using a k...now that I am using the bs=32k it gives me
> > > more info on the header.... which is a good thing
> > >
> > > but I'm still getting I/O errors on subsequent blocks, aka everything after
> > > the first header (the amanda tape label)
> > >
> > > is this just a flaky tape thing?? I frequently have to relabel tapes
> > > due to intermittent I/O errors... have I got a bad tape drive here?
> >
> > Please give us the set of the commands (copy/paste).
>
> Here's the sequence (same as an earlier email)
>
> mt -f /dev/nst0 rewind
> mt -f /dev/nst0 fsf 1
> dd if=/dev/nst0 bs=32k skip=1 | tar xvf -
>
> When I try the above, the following is output:
>
> tar: Hmm, this doesn't look like a tar archive
> tar: Skipping to next file header
> dd : /dev/nst0: I/O error
> 1023+0 records in
> 1023+0 records out
>
> Yuri Pismerov replied and mentioned that some versions of Redhat have
> a problem with 'skip' and suggested that I try it like so:
>
> mt -f /dev/nst0 rewind
> mt -f /dev/nst0 fsf 1
> dd if=/dev/nst0 of=/dev/null bs=32k count=1
> dd if=/dev/nst0 bs=32k skip=1 | tar xvf -
>
> which outputs a simple:
>
> dd: /dev/nst0: I/O error
> 0+0 records in
> 0+0 records out
>
> Which leads me to wonder about the integrity of my tape...
> although if I do:
>
> mt -f /dev/nst0 rewind
> dd if=/dev/nst0 bs=32k count=1
>
> I see:
>
> AMANDA: TAPESTART DATE 20010227 1+0 records in
> 1+0 records out
>
> so obviously part of the tape is readable...
>
> What Giveth!!?
>
> Jer
--
Yuri Pismerov, TUCOWS.COM INC. (416) 535-0123 ext. 1352
S/MIME Cryptographic Signature
