[SOLVED] How to configure /etc/fstab to auto mount encrypted partition?

michalng · 11-26-2011, 09:05 PM

Recently installed openSUSE 12.1 dual booting with Debian.

Layout listed below:

Code:

Debian     ext3    /root   sda1     
Debian     ext3    /home   sda2  (encrypted with luks)
           swap    swap    sda3
openSUSE   ext4    /       sda5     
openSUSE   ext4    /home   sda6  (encrypted with luks)

When in Debian, I am able to manually mount openSUSE /home (sda6) and get the files that I needed from there.

Wanted to know how to configure Debian's /etc/fstab so that I can automatically mount sda6 (after entering password) during boot.

Thanks

Amdx2_x64 · 11-27-2011, 09:45 PM

I had asked a similar question. I didn't get a response either. So I am guessing the answer is no.

michalng · 11-28-2011, 04:49 AM

Quote:

Originally Posted by Amdx2_x64

I had asked a similar question. I didn't get a response either. So I am guessing the answer is no.

LOL,
this is a good reply,
thanks for the heads up.

62chevy · 11-28-2011, 10:53 AM

How do you mount Debian in openSUSE? Maybe you can wright a script for your autostart when logging in or maybe rclocal. Documentation seams to be skimpy on the and the only thing I could find was an FAQ that said to mount with a loop0 when doing a backup.

Try this site. http://code.google.com/p/cryptsetup/

Code:

Package: cryptsetup                      
State: not installed
Version: 2:1.1.3-4squeeze2
Priority: optional
Section: admin
Maintainer: Debian Cryptsetup Team <pkg-cryptsetup-devel@lists.alioth.debian.org>
Uncompressed Size: 1,204 k
Depends: libc6 (>= 2.3), libdevmapper1.02.1 (>= 2:1.02.36), libpopt0 (>= 1.16), libuuid1 (>= 2.16), dmsetup
Suggests: udev, initramfs-tools (>= 0.91) | linux-initramfs-tool, busybox, dosfstools
Conflicts: cryptsetup-luks
Breaks: hashalot (< 0.3-2)
Replaces: cryptsetup-luks, hashalot (< 0.3-2)
Provides: cryptsetup-luks
Description: configures encrypted block devices
 Cryptsetup provides a command-line interface for configuring encrypted devices. This is done using the Linux kernel device mapper target dm-crypt. This
 version of cryptsetup has integrated support for LUKS. 
 
 cryptsetup is backwards compatible with the on-disk format of cryptoloop, but also supports more secure formats. This package includes support for
 automatically configuring encrypted devices at boot time via the config file /etc/crypttab. Additional features are cryptoroot support through
 initramfs-tools and several supported ways to read a passphrase or key.
Homepage: http://code.google.com/p/cryptsetup/

That's all I could find and you may have all ready seen this stuff.

62chevy · 11-28-2011, 11:07 AM

Try this Howto from Arch Linux. https://wiki.archlinux.org/index.php...tion_with_LUKS Looks like they go into it in depth.

michalng · 12-25-2011, 05:04 AM

Found the answer, logged here for future users who's looking for the same answer:

1. Add this line to /etc/crypttab:

my_encrypted_partition /dev/sda6 none luks,timeout=30

2. Set the home partition to this in /etc/fstab:

/dev/mapper/my_encrypted_partition /home ext4 nodev,nosuid,relatime 0 2

You'll be asked the passphrase for my_encrypted_partition during boot up. That's it.

Merry Christmas.