another stupid dump question

Tim Wunder tim
Mon May 17 11:47:11 PDT 2004


On 5/7/2003 12:00 PM, someone claiming to be Andrew Mathews wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
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> Tim Wunder wrote:
> | Is there a way to have dump backup multiple filesystems onto a singe
> | tape? In reading the man page, the only thing that resembles that
> | capability is th -M option, but that doesn't appear to be what I want.
> | Unless I'm misunderstanding the man page, it's not possible.
> |
> | Thanks,
> | Tim
> |
> 
> Yes. Use the non-rewinding tape device, /dev/nst0. This will write the
> first dump to tape, but not rewind it when complete. Then the next dump
> will begin after the end of the first dump block on tape. Repeat as
> necessary. This is what I use on a Sun system using dump (slightly
> modified from my xfsdump backup scripts):
> 
<script-snip>

Well, this seems to work, only I haven't a clue how to restore after 
this. I was able to execute the following subsequent commands without error:
# /sbin/dump 0uf /dev/nst0 /
# /sbin/dump 0uf /dev/nst0 /var

But when I try to do an interactive restore with
# /sbin/restore -i

/sbin/restore > what
Dump   date: Thu May  8 14:35:05 2003
Dumped from: the epoch
Level 0 dump of / on <my hostmname>:/dev/sda1
Label: none

How do I get to the part of the tape where the second dump (of /var) is 
located? 'man restore' isn't providing me enough clues :-(
I haven't looked in detail at your script, is it logging where on the 
tape the /var dump got dumped? Do I need to manually advance the tape 
there and then /sbin/restore -i /dev/nts0?

Thanks,
Tim





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