From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jorg Bornschein" <jb@capsec.org>
Subject: Re: Can't register existing backing devices anymore
Date: Mon, 14 Aug 2017 17:17:33 +0000
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To: Coly Li <colyli@suse.de>
Cc: linux-bcache@vger.kernel.org

August 13, 2017 4:44 PM, "Coly Li" <colyli@suse.de> wrote:

Hi Coly, 


were you able to reproduce my problem?


   j 


> 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
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