* [dm-crypt] Can I encrypt an already existing, non-empty partition to use LUKS?
@ 2013-09-09 18:26 Enda
2013-09-09 19:36 ` Milan Broz
0 siblings, 1 reply; 2+ messages in thread
From: Enda @ 2013-09-09 18:26 UTC (permalink / raw)
To: dm-crypt@saout.de
https://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions
The FAQ says "there is no converter, and it is not really needed."
I already have a backup of my data, and I could wipe all the files on the drive with luks and then restore from backup but I would prefer to keep the files on the drive in case something happened to the backup files.
Is it possible to encrypt an already existing, non-empty partition to use LUKS?
-- Enda
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dm-crypt] Can I encrypt an already existing, non-empty partition to use LUKS?
2013-09-09 18:26 [dm-crypt] Can I encrypt an already existing, non-empty partition to use LUKS? Enda
@ 2013-09-09 19:36 ` Milan Broz
0 siblings, 0 replies; 2+ messages in thread
From: Milan Broz @ 2013-09-09 19:36 UTC (permalink / raw)
To: Enda; +Cc: dm-crypt@saout.de
On 09/09/2013 08:26 PM, Enda wrote:
> https://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions
>
> The FAQ says "there is no converter, and it is not really needed."
>
>
> I already have a backup of my data, and I could wipe all the files on
> the drive with luks and then restore from backup but I would prefer
> to keep the files on the drive in case something happened to the
> backup files.>
> Is it possible to encrypt an already existing, non-empty partition to use LUKS?
Well, there is a way. It is not in-place encryption (the data are shifted) so you need
reserve some space in the end of device (either by increasing partition or
by shrinking the filesystem a little bit).
Read http://asalor.blogspot.cz/2012/08/re-encryption-of-luks-device-cryptsetup.html
and man page of cryptsetup-reencrypt.
And do not try it without backup, reencrypting is still experimental thing.
Milan
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2013-09-09 18:26 [dm-crypt] Can I encrypt an already existing, non-empty partition to use LUKS? Enda
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