[dm-crypt] cryptsetup not working under 3.6 - regression from 3.4?

Heinz Diehl htd at fancy-poultry.org
Sun Oct 21 12:00:15 CEST 2012

On 21.10.2012, Tvrtko Ursulin wrote: 

> # cryptsetup --key-file=- luksOpen /luks.file target
> Enter passphrase:
> device-mapper: reload ioctl on  failed: No such file or directory
> Failed to setup dm-crypt key mapping for device /dev/loop0.
> Check that kernel supports aes-cbc-essiv:sha256 cipher (check syslog for
> more info).

I bet you miss some of the neccessary crypto-stuff in your .config.

I tested your case and have no problems:

[root at wildsau htd]# uname -a
Linux wildsau.fritha.org 3.6.3-rc1 #1 SMP PREEMPT Sat Oct 20 18:57:04 CEST 2012 x86_64 x86_64 x86_64 GNU/Linux

[root at wildsau htd]# cryptsetup luksDump /dev/loop0
LUKS header information for /dev/loop0

Version:       		1
Cipher name:   		aes
Cipher mode:   		cbc-essiv:sha256
Hash spec:     		sha1
Payload offset:		4096
MK bits:       		256
MK digest:      0e 1b a2 0a c3 db f0 16 27 df fb 2a ea e8 2e a9 15 ec f9 6e 
MK salt:	c6 56 f1 f8 38 4a 69 81 42 91 ce e1 3c b4 36 b6 
               	05 9c c1 ee 1a a2 21 ce ec a8 ea f9 84 cf 3e 28 
MK iterations: 	42125
UUID:          	5b894353-1b52-40fa-bc59-4ce5b3795894

Key Slot 0: ENABLED
    Iterations:			168948
    Salt:               	77 f7 f5 1b 7e 8c ea 18 1f de fd 1c 9a fd 96 9d 
				f3 6e 76 9f 9d 5f 97 b2 72 9e 83 ff 59 13 1e a9 
    Key material offset:	8
    AF stripes:            	4000
Key Slot 1: DISABLED

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