Re: best way to backup a full encrypted LUKS system

To: debian Users ENG <debian-user@lists.debian.org>
Subject: Re: best way to backup a full encrypted LUKS system
From: David Christensen <dpchrist@holgerdanske.com>
Date: Mon, 26 Jul 2010 18:17:29 -0700
Message-id: <[🔎] 4C4E33A9.6070100@holgerdanske.com>
In-reply-to: <[🔎] 4C4D6666.90101@ccf.auth.gr>
References: <[🔎] 4C4D6666.90101@ccf.auth.gr>

Γιώργος Πάλλας wrote:

I have a system running off a fully encrypted 160GB HD using LVM over
LUKS.  Obviously, taking an image of the disk clonezilla-style is very
inefficient as I need 160GB per backup. So, regularly, I take a full tar
of the system while the system is live.

An idea -- boot a live CD, open the LUKS partition(s), configure LVM,run zerofree against the unmounted logical volume, and then dd | tar |gzip | ccrypt the unmounted volume to an external hard drive?



David

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