Mailinglist Archive: opensuse (3337 mails)

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Re: [opensuse] backup question to y'all
On Mon, Apr 10, 2006 at 09:20:43PM +0200, Chris Maaskant wrote:
> Yes it copies all files in the given directory's to /backup
> I don't understand the difference between copying files/directories and
> a backup?

Look below.

> > or does it do recursive backups as well?
> If that means copying directories + subdirectories, then yes.

Sorry, brainfart on my side. I ment to say `incremential backups`

What it does basicaly is first it makes a complete backup. The next backup
is only the differences since the last time.

I do 4 backups per day. A complete backup of what I want to have is about
5GB. I can go back to 2005-12-06 for restores and yet it only takes 20GB.
The last full backup was done 2006-02-08.

So aproximatly every 2 months I have a full backup. In between I get
partial backups. The longer I go back, the more time is in between them.

Situation that happend to me. I change a script and screw it up
completely. I close it, safe it and am happily unaware that I screwed up.
Two days later I look at the then empty file. Somehow I had managed to
safe an empty file.

A copy would have copied the empty file and I could then only recover the
empty file. With an incremential, I could first recover the empty file,
see that it was empty, then go back to the day that I knew I still had a
working file and retrieve that. Although I lost some, I had not lost all
of the content.

Nutze die Zeit. Sie ist das Kostbarste, was wir haben, denn es
ist unwiederbringliche Lebenszeit. Leben ist aber mehr als Werk
und Arbeit, und das Sein wichtiger als das Tun - Johannes Müller-Elmau

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