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From: Malcolm Kay <malcolm.kay@internode.on.net>
Organization: At home
To: Michael Alestock <michaela@maa-net.net>, questions@freebsd.org
Date: Tue, 2 Sep 2003 01:10:02 +0930
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Subject: Re: Dump
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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 driv=
e
> (Travan 4GB uncompressed).  The filesystems are, "/", "/usr", "/var", a=
nd
> "/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 fil=
e.

> 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=20
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