On 2017/8/13 下午11:40, Jorg Bornschein wrote:

August 13, 2017 4:27 PM, "Coly Li" [off-list ref] wrote:

Hi Coly, 

quoted

Could you please give me some hint how the /dev/dm- nodes are created ?
I will try to reproduce it on my hardware.

Thanks for the report.

I created them with 'cryptsetup luksFormat ...', IIRC. When I run 'cryptsetup luksDump' I get:

Version:       	1
Cipher name:   	aes
Cipher mode:   	xts-plain64
Hash spec:     	sha256
Payload offset:	4096
MK bits:       	256
MK digest:     	<STUFF> 
MK salt:       	<STUFF> 
MK iterations: 	400000
UUID:          	81a8d12e-9309-4317-b447-ab3c86e2f7ea

Key Slot 0: ENABLED
	Iterations:         	3200000
	Salt:               	<STUFF> 
	Key material offset:	8
	AF stripes:            	4000


and this is the contents of my /etc/crypttab:

# <name>       <device>         <password>              <options>
crypted-sdb    /dev/sdb1	/etc/cryptfs.key
crypted-sdc    /dev/sdc1	/etc/cryptfs.key
crypted-sdd    /dev/sdd1	/etc/cryptfs.key
crypted-sde    /dev/sde1	/etc/cryptfs.key

Oh, I don't use cryptsetup before, let me try ... Thanks for the hint :-)

Coly Li