Dump

[Malcolm Kay]

On Mon, 1 Sep 2003 23:45, Michael Alestock wrote:
> I had a question....
>
> I have 4 filesystems that I want to dump(8) to my SCSI Tape backup drive
> (Travan 4GB uncompressed).  The filesystems are, "/", "/usr", "/var", and
> "/usr/home."  All four filesystems equal about 2.5Gigs of data.
>
> I dumped the first filesystem "/" by executing, "dump -0uf /dev/sa0 / "
> ....then executed, "mt -f /dev/sa0 eom" to move the tape to the end of the

Not sure that this is good; especially if it is not a new tape.
Try:
# mt -f  /dev/nsa0 fsf 1

Or write dumps to /dev/nsa0 which leaves the tape positioned for next file.

> backup (to append to the tape), then dumped the second filesystem (/usr)
> using,"dump -0uf /dev/sa0 /usr".  Then once again I executed, "mt -f
> /dev/sa0" to move the tape to the end (to append to it).
>
> When I go to execute, "restore -if /dev/sa0" to confirm that both
> filesystems were saved so far, there's only ONE filesystem saved to the
> tape "/".  I can't 'cd' to /var because it's not on the tape.  What am I
> doing wrong???  I know I still have plenty of tape left to save other
> filesystems, but it's not dumping anything after the first filesystem.
>

When invoked restore will only look at one dump.
You need to move past the first dump file before invoking restore 
on say /usr.
If your end-of-file marks are correctly written you should be able to do this
with:
# mt -f  /dev/nsa0 fsf 1

Now invoke restore -if /dev/sa0  -- should find /usr


Malcolm