Amanda-Users

Re: Keeping backups on holding disk after writing to tape

2005-05-11 07:23:46
Subject: Re: Keeping backups on holding disk after writing to tape
From: Paul Bijnens <paul.bijnens AT xplanation DOT com>
To: Geert Uytterhoeven <geert AT linux-m68k DOT org>
Date: Wed, 11 May 2005 13:05:00 +0200
Geert Uytterhoeven wrote:
On Tue, 10 May 2005, Brian Cuttler wrote:

It sounds like a good feature - if you have enough holding area
you could even hold files for a configurable number of days.

You'll need a way to differentiate held files from ones that didn't
properly flush though, perhaps moving to a subdirectory of the
holding area, YYYYMMDD-HELD or modifying the file name somehow.


Would it be possible to replace taper by a wrapper that uses `cp -l' to create
a hardlinked copy of the backup data first?

It's more complicated than that, because the header of a file-in-holdingdisk is different than that from a file on (v)tape.
Moreover, holdingdisk files could be chunked, while (v)tape images
are not.  (Even when using the Tape-chunking patches currently in
beta, the header are different, and the tape-chunks could be different
size.)


--
Paul Bijnens, Xplanation                            Tel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM    Fax  +32 16 397.512
http://www.xplanation.com/          email:  Paul.Bijnens AT xplanation DOT com
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