Hi Noah,

You might be able to achieve this with ecryptfs, from Ubuntu.

It can mount an encrypted drive with unencrypted-passthrough; you can then run around rewriting all the files to convert them.

ie.

mount -t ecryptfs encrypted crypted

find -type f crypted -exec rewrite_file \{\} \;

where rewrite_file does something like

cp $FILE tmp_file

rm $FILE

mv tmp_file $FILE

-Toby

On Thu, 23 Apr 2015 at 08:36 Noah O'Donoghue <noah.odonoghue@gmail.com> wrote:

Hey all,

I have a few cases where I'd like to encrypt without taking the system down for extended periods, ie, servers.

In the windows/apple world truecrypt / bitlocker / filevault will all let you encrypt the root partition as a background process, throttled to a low IO load. Usually this requires a reboot to get started, then runs in the background.

Does anyone know how to achieve this in the Linux world? (preferably with luks)

-Noah

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