Gentoo Archives: gentoo-user

From: "Stefan G. Weichinger" <lists@×××××.at>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] btrfs conversion: first impressions
Date: Tue, 13 May 2014 23:09:27
Message-Id: 5372A61D.9060406@xunil.at
In Reply to: Re: [gentoo-user] btrfs conversion: first impressions by Neil Bothwick
1 Am 14.05.2014 01:02, schrieb Neil Bothwick:
2 > On Wed, 14 May 2014 00:34:12 +0200, Stefan G. Weichinger wrote:
3 >
4 >> How to transform partitions/directories set up with cryptsetup
5 >> into this new world? Set up a btrfs on top of the crypted fs ? I
6 >> ask because I look for a clean setup for my 2 thinkpads.
7 >
8 > Encrypt the partition(s) with cryptsetup and them use the devices
9 > in /dev/mapper to create the volumes. That's how I have my ZFS
10 > pools set up and I'm looking to do the same when I try BTRFS.
11
12 Doesn't that screw up the whole idea of checksumming etc ?
13
14 In my understanding the FS (=btrfs or zfs) should have the direct
15 contact to the "metal" (=hdd/sdd) to be fully able to detect bitrot
16 and stuff.
17
18 btrfs inside a crypted volume will work, yes, but it won't be able to
19 see or correct flipping bits on the hardware, because the underlying
20 layers of cryptsetup etc might hide them.
21
22 Right?

Replies

Subject Author
Re: [gentoo-user] btrfs conversion: first impressions Neil Bothwick <neil@××××××××××.uk>