Amanda-Users

Re: using disk instead of tape

2006-09-05 05:34:20
Subject: Re: using disk instead of tape
From: Geert Uytterhoeven <geert AT linux-m68k DOT org>
To: Phil Howard <phil-amanda-users AT ipal DOT net>
Date: Tue, 5 Sep 2006 11:24:52 +0200 (CEST)
On Tue, 5 Sep 2006, Phil Howard wrote:
> On Sat, Sep 02, 2006 at 06:39:40PM -0400, Jon LaBadie wrote:
> | It certainly would destroy one of amanda's features,
> | the ability to easily recover backup data using
> | standard unix utilities without amanda software.
> 
> How is that destroyed?
> 
> Suppose you use tar format.  You can have tar read from tape directly,
> which is what I presume you mean for being able to recover outside of
> Amanda.  You can have tar read from disk partitions if the native
> partition scheme is used.

At first I had the same reaction as you: it would work fine if you would cycle
your tapedev through the partitions.  However, then I realized a tape can store
multiple `files' sequentially, while a disk partition can't (without hackerish
that would annihiliate the easy recovery again).

So as long as you dump only one DLE, it would work fine. If you dump more than
one DLE, you need more logic.

Gr{oetje,eeting}s,

                                                Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert AT linux-m68k 
DOT org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                                            -- Linus Torvalds