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Old 08-10-2012, 03:04 PM   #1
musiqdefunk
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Registered: Mar 2011
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LUKS on LVM


RHEL 6

I am trying to encrypt an LV with LUKS but everytime I boot it says superblock could not be read... I've tried many commands and it still does not work, it doesn't even ask for a password.

Code:
lvcreate -L500MB -n "lvname" "vgname"
shred -n1 -v "/dev/mapper/vgname_lvname"
cryptsetup luksFormat "/dev/mapper/vgname_lvname"
cryptsetup luksOpen "/dev/vgname/vgname_lvname" "name"
mkfs.ext4 "/dev/mapper/name"

vi /etc/fstab
/dev/mapper/name dir ext4 defaults 1 2

vi /etc/crypttab
dir /dev/mapper/name none
When I go into rescue mode however it does ask me for a password.

Last edited by musiqdefunk; 08-10-2012 at 03:18 PM.
 
Old 08-10-2012, 06:50 PM   #2
unSpawn
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Quote:
Originally Posted by musiqdefunk View Post
everytime I boot it says superblock could not be read... (..)
When I go into rescue mode however it does ask me for a password.
Right SELinux context on dir?
Anything in dmesg / syslog?
 
Old 08-10-2012, 10:16 PM   #3
musiqdefunk
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well i guess in /etc/crypttab it should be :

Code:
dir /dev/mapper/vgname_lvname none
instead of
Code:
dir /dev/mapper/name
that seemed to have work but I also did it at home on my vm... i'll try it again at work on monday
 
Old 08-11-2012, 05:07 AM   #4
unSpawn
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OK. BTW if you read the documentation carefully you'll find the RHEL 6 Security Guide uses /dev/VGname/LVname for crypttab but the RHEL 6 Installation Guide uses UUIDs...
 
  


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