From: Ondrej Kozina <okozina@redhat.com>
To: "shmick@riseup.net" <shmick@riseup.net>, dm-crypt@saout.de
Subject: Re: [dm-crypt] re-format existing luks partition
Date: Fri, 22 Nov 2013 11:33:48 +0100 [thread overview]
Message-ID: <528F330C.7090407@redhat.com> (raw)
In-Reply-To: <528F152D.5090205@riseup.net>
On 11/22/2013 09:26 AM, shmick@riseup.net wrote:
> can i re-format an existing luks partition (as the same /dev/sda[x] and
> simply re-copy an fsarchive operating system backup straight to it
> without anything further required ?
There's an offline cryptsetup-reencrypt tool in cryptsetup 1.5.0 and
later. It's really offline so the device needs to umnouted before
reencrypting.
Also you should consider shrinking the filesystem residing on the luks
device (and after that also the device) before actual reencryption. It
makes reencryption sector-by-sector no matter if it is used by
filessytem or not.
Also there are some fixes ready for reencryption tool on the way so you
may be also interested waiting for 1.6.3 release in coming weeks.
Regards
Ondrej
next prev parent reply other threads:[~2013-11-22 11:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-22 8:26 [dm-crypt] re-format existing luks partition shmick
2013-11-22 10:33 ` Ondrej Kozina [this message]
2013-11-22 11:49 ` shmick
2013-11-22 14:19 ` Robert Nichols
2013-11-22 15:33 ` Arno Wagner
2013-11-26 12:06 ` [dm-crypt] open ext-2/3/4 luks container, ext2fsd + FreeOTFE in Windows shmick
2013-11-26 12:34 ` Milan Broz
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