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On Wed, May 09, 2001 at 11:23:55PM -0600, Brook Milligan wrote:

> I am trying to install a Seagate STD224000N DDS-3 DAT SCSI tape drive
> on a 1.5/i386 box.  The kernel finds the drive, and mt(1) seems to
> work fine for moving the tape around and retrieving status information
> (though I'm not sure how to interpret all of it).  Dump(8) also seems
> to work for dumping a filesystem (that is, it doesn't report errors
> and the tape seems to stream continuously).
>=20
> However, when I try to restore(8) a filesytem from a just-written
> tape, there are various errors and my disk drive becomes hosed in
> various ways (e.g., lost bootblocks, messed up /dev).  This is for
> restoring into a completely empty directory, not over the top of my
> existing filesystem.  Additionally, some regular files (e.g., in /bin
> or /etc) are different from the original ones.  For example, they may
> be truncated or may include large chunks of binary garbage.

What commands are you using for the dump and restore?

Can you try tar instead?  It may detect some errors that restore
won't.

Also, you could grab a big file, dd it onto the tape, and then dd it
back off again.  Use md5 to see if it's the same file.

You've checked /var/log/messages for kernel error messages, right?

Chris

--=20
---------------------------------------------------- chris@cjones.org
Chris Jones                                          Mad scientist at large
  www.netbsd.org www.postgresql.org www.schemers.org www.python.org

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