Gentoo on an encrypted Btrfs

[JvHellracer]

Hi, I would like to install Gentoo on my laptop. I've checked some benchmarkes of btrfs and they look really good.

But I need to encrypt my laptop because I have to proteced the saved data. Is it possible to use dmCrypt with LUKS together with btrfs on Gentoo?

Is there a how-to for ecnrypted installation?

greetz

[idella4]

JvHellracer,

yes and kind of yes. See the links for encrypt.
btrfs is available. I have taken an interest in it and have tried it out. So far I have lost data twice, but I was experimenting with an experimental file system. I have a few posts re btrfs and there are others, in particular look at the discussion thread in gentoo chat.

Do not use btrfs for your system partition, unless you can readily backup the whole system readily. Try it out and use it for data that you want encrypted and then back it up to a non system volume. It is not a solid fs yet, it can break. When it breaks, the btrfsck does not currently repair it.

I've had three partitions crumble, the last two I have a post for and have no idea what happened. One day they mounted, the next they didn't.
It's usable, but the only fallback currently is to back it up completely at all times to prevent having to pick up the pieces.
It consistently cannot use all the space of a nominated file system, You lose about 10% of a btrfs file system, It just can't read the size of itself correctly, wasting 10% of the volume. So when it fills before you expect it too, again you're prone to having the file system break.
_________________
idella4@aus

[cach0rr0]

the encryption portion of this is...not a "non-variable", but soon as the crypt volume is unlocked, whether it's btrfs, ext3, reiser, doesn't matter.

I will say that the performance I've seen with btrfs has been sub-standard. I *am* using it atop luks volumes, as follows: