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Re: can't open luks device after raid 5 rebuild


as I noticed that I can't access the device, I recreated the raid manually.
 mdadm --create --level=5 -n 3 /dev/md127 /dev/sdb /dev/sdc /dev/sdd

Could this damage the key-slot?
Are the metadata of the RAID relevant to this?
I read that old versions of mdadm created RAIDs with metadata=0.90 and the newer versions with metadata=1.20.


On 04/08/2012 05:47 PM, Arno Wagner wrote:

a RAID degradation and successful rebuild does not have this
effect. Did you do something else? Or did you do a manual (forced)
rebuild? What exactly did happen to the RAID and what did you
do to fix it?

The symptoms you see are typical for a damaged key-slot. The
header resides in a single sector and is not affected.
If so, a header backup is possibly the  only thing that will
help you, see the FAQ for details.


On Sun, Apr 08, 2012 at 03:04:47PM +0200, artificial11000 wrote:
Hi guys,

after my encrypted RAID 5 was degraded and rebuilt, I can't open it anymore.

cryptsetup luksOpen /dev/md127 archiv
Geben Sie den Passsatz f?r /dev/md127 ein:
Kein Schl?ssel mit diesem Passsatz verf?gbar.

It says that the provided password doesn't match any of the stored keys.

Here's the output of luksDump:

cryptsetup luksDump /dev/md127
LUKS header information for /dev/md127

Version:           1
Cipher name:       aes
Cipher mode:       xts-plain
Hash spec:         sha1
Payload offset:    4040
MK bits:           512
MK digest:         53 24 e5 1d 68 3e f1 5f 96 56 06 23 85 4a b6 89
07 de 52 1d
MK salt:           5b 2e 4b 48 d8 2f 91 52 90 79 3b 6e 73 13 52 f1
                    8f 9e 35 50 8e 25 9e 92 22 52 48 26 44 d7 bd 6c
MK iterations:     10
UUID:              3fbd3c47-8dc3-4541-8960-00c0a80c8ae9

Key Slot 0: ENABLED
     Iterations:             363564
     Salt:                   32 db 41 40 56 fe 6f a9 c7 e4 c4 5f a0 4c 52 db
                               8e df 07 8c 9b 32 86 e6 ac 0c 8a e6 c4
69 31 0f
     Key material offset:    8
     AF stripes:                4000
Key Slot 1: DISABLED
Key Slot 2: DISABLED
Key Slot 3: DISABLED
Key Slot 4: DISABLED
Key Slot 5: DISABLED
Key Slot 6: DISABLED
Key Slot 7: DISABLED

Can anyone help me?

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