EXT4 volume encryption

I need a solution to encrypt a volume in a storage cluster.
We are using Ubuntu 10.04 and 12.04.
This will not be a hard disk level, it will be at volume level

I will not use truecrypt.

Is there a good encrypting file system, or application I can use for a data store?
This will not be on the /, and not be bootable.

I would prefer something like EXT4.

I can clarify this if needed.


Thank you very much!

Brian Holcomb.
LVL 1
Orcatec Operations TeamAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Dave HoweSoftware and Hardware EngineerCommented:
sounds like what you want is LUKS.
there is a walkthough here but the potted version is, to encrypt a partition such as /dev/sdb2 you could run:
cryptsetup luksFormat -c aes-xts-plain64 s- 512 -h sha512 /dev/sdb2
cryptsetup luksOpen /dev/sdb2 sdb2_luks

this will format the partition and unlock it - prompting for the passphrase both times.

once you have unlocked it, you should have a block object /dev/mapper/sdb2_luks which you can use mkfs on (to format as ext4) then mount.

lots more options, just read the cryptsetup manpage in ubuntu :)
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Orcatec Operations TeamAuthor Commented:
Very, Very cool, Dave. Thank you very much. I will check LUKS out.

Cheers,
Brian Holcomb
0
Orcatec Operations TeamAuthor Commented:
Very helpful comment with direct command line references and link to walkthrough.

Pinpoint accuracy.
0
Dave HoweSoftware and Hardware EngineerCommented:
You are welcome. There is also a way to make LUKS TC compatible, but as you are using EXT4 within the volume, that seems a bit pointless.

you should also investigate the cryptsetup "luksHeaderBackup" command - this is vital for recovery if you should experience disk corruption in the future, so should be exported to other media in case of future need :)
0
Orcatec Operations TeamAuthor Commented:
Will do!
Thanks for all your help Dave.

We can now offer one of 2 proper solutions for some of our potential government contracts.

Cheers,
Bri...


Brian Holcomb
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Encryption

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.