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Old 12-24-2008, 03:41 PM   #1
a_minor
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Registered: Dec 2008
Location: Tehran , IRN
Distribution: Fedora core 16
Posts: 23

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finding module


hi all,

i'm novice in linux, I have a problem with encrypting root fs and it has failure in the following error message when i want to use cryptsetup to provide encrytion layer , with this error:

Quote:
Command failed: BLKROGET failed on device: Inappropriate ioctl for device
is seems because of not existing 'dm_mod' module in kernel, is it true?
if that's the reason, now! how can i catch it, that's not exist im my available repository, please guide me what must i do? i didn't find it in mirrors for source
 
Old 12-26-2008, 11:53 AM   #2
Saptech
Member
 
Registered: Nov 2000
Location: Third Stone from the Sun
Distribution: Mageia 5, Debian Stretch & Funtoo Linux
Posts: 140

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You're not saying which distro you are using but I found this on Ubuntu's forum.

Quote:
Re: HOWTO: Full encrypted system: root, home, swap
It was something simple. I was trying to make the encrypted filesystem on a mount instead of a drive or partition. Now I can run
Code:

# cryptsetup -d /etc/keys/backup create backup /dev/sdd
# mount /dev/mapper/backup mnt/usb

successfully. The incompatible libdevmapper was because I was forgetting to use 'sudo'.

Also, the following works correctly now.
Code:

# cryptsetup -c aes-cbc-essiv:sha256 -y -s 256 luksFormat /dev/sdd
Maybe it can be of help. here's the link below.

http://ubuntuforums.org/showthread.php?t=120091&page=7
 
Old 12-26-2008, 03:54 PM   #3
a_minor
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Registered: Dec 2008
Location: Tehran , IRN
Distribution: Fedora core 16
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hi,
thanks that finally someone is here

yes , that was exactly what i did (with su) ,instead for using later as a root partition, as i see in this link : http://www.linuxjournal.com/print/7743

but in this way ,
when i type this code:
Code:
cryptsetup -d /etc/root-key create root /dev/sda9
i had this problem:
Code:
Command failed: BLKROGET failed on device: Inappropriate ioctl for device
that isn't because of not existence of dm_crypt module but i think that the reason is not existence of dm-mod module , but i didn't have it in my fc10 repository, and i didn't find it anywhere,

please help me!
 
Old 12-27-2008, 03:37 PM   #4
Saptech
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Registered: Nov 2000
Location: Third Stone from the Sun
Distribution: Mageia 5, Debian Stretch & Funtoo Linux
Posts: 140

Rep: Reputation: 25
Sorry. That's all the help I can offer. I haven't used encryption for any OS and don't know anything about it. Try googling for more info.
 
  


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