Re: Can't register existing backing devices anymore

[Coly Li <colyli@suse.de>]

On 2017/8/13 下午11:40, Jorg Bornschein wrote:
> August 13, 2017 4:27 PM, "Coly Li" <colyli@suse.de> wrote:
> 
> Hi Coly, 
> 
>> 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