Re: SCSI tape corruption problem

[Marc SCHAEFER <schaefer@alphanet.ch>]

Now try this:

   cd ~archive
   mt -f /dev/tapes/tape0 rewind
   tar cvf - . | gzip -9 | dd of=/dev/tapes/tape0 bs=32k

and then:

   mt -f /dev/tapes/tape0 rewind
   dd if=/dev/tapes/tape0 bs=32k | gzip -d | tar --compare -v -f -

The above is the proper way to talk to a tape drive through gzip.

PS: if you pre-compress, it can be wise to suppress hardware compression
(mt -f /dev/nst0 datcompression 0) and maybe use a big buffer with
the buffer command.