From: Phil Turmel <philip@turmel.org>
To: Stone <stone@heisl.org>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Brocken Raid & LUKS
Date: Thu, 21 Feb 2013 13:54:43 -0500 [thread overview]
Message-ID: <51266D73.5020700@turmel.org> (raw)
In-Reply-To: <5126678D.9030101@heisl.org>
On 02/21/2013 01:29 PM, Stone wrote:
> Am 21.02.2013 19:11, schrieb Phil Turmel:
>> On 02/21/2013 01:08 PM, Stone wrote:
>>
>>> ok i have checked all superblocks but i get always the same message.
>>> here one sample:
>>> fsck.ext4 -n -b 644972544 /dev/mapper/md2_nas
>>> e2fsck 1.41.14 (22-Dec-2010)
>>> fsck.ext4: Invalid argument while trying to open /dev/mapper/md2_nas
>>>
>>> The superblock could not be read or does not describe a correct ext2
>>> filesystem. If the device is valid and it really contains an ext2
>>> filesystem (and not swap or ufs or something else), then the superblock
>>> is corrupt, and you might try running e2fsck with an alternate
>>> superblock:
>>> e2fsck -b 8193 <device>
>> You very likely have the wrong chunk size.
>>
>> Close luks, stop md2, and re-create with --chunk=64
>>
>> And then try to fsck again. (Without -b at first.)
>>
>> Phil
> ok. with --chunk=64 i cannot open the luks.
> in witch steps (chunk) should i continue?
That is a big surprise. The luks signature should not move with chunk
size. Please use "mdadm -E /dev/sdc1" to recheck your data offset.
If that wasn't it, please show the hexdump for the entire luks
signature. I'd like to see its payload offset.
Also, if you go back to --chunk=512, open the luks, you could run the
following command to find possible superblock locations:
hexdump -C /dev/mapper/md2_nas |egrep '^[0-9a-f]+30 .+ 53 ef' >sb.lst
(May take a long time to read the whole array)
Phil
next prev parent reply other threads:[~2013-02-21 18:54 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-19 16:01 Brocken Raid & LUKS stone
2013-02-19 17:57 ` Phil Turmel
[not found] ` <5123E4E9.3020609@heisl.org>
2013-02-19 21:16 ` Phil Turmel
[not found] ` <5123EF45.6080405@heisl.org>
[not found] ` <5123F7C7.7000406@turmel.org>
[not found] ` <5123FB71.3060509@heisl.org>
2013-02-20 0:31 ` Phil Turmel
2013-02-20 18:32 ` Stone
2013-02-20 18:39 ` Phil Turmel
2013-02-21 7:04 ` Stone
2013-02-21 9:42 ` stone
2013-02-21 13:29 ` Phil Turmel
2013-02-21 14:19 ` stone
2013-02-21 15:04 ` Phil Turmel
2013-02-21 15:30 ` stone
2013-02-21 15:38 ` Phil Turmel
2013-02-21 15:49 ` Phil Turmel
2013-02-21 16:32 ` Stone
2013-02-21 16:41 ` Phil Turmel
2013-02-21 16:43 ` Stone
2013-02-21 16:46 ` Phil Turmel
2013-02-21 16:51 ` Stone
2013-02-21 16:54 ` Phil Turmel
2013-02-21 17:17 ` Stone
2013-02-21 17:23 ` Stone
2013-02-21 17:36 ` Phil Turmel
2013-02-21 17:47 ` Stone
2013-02-21 18:00 ` Phil Turmel
2013-02-21 18:08 ` Stone
2013-02-21 18:11 ` Phil Turmel
2013-02-21 18:29 ` Stone
2013-02-21 18:54 ` Phil Turmel [this message]
2013-02-21 19:12 ` Stone
2013-02-21 19:17 ` Stone
2013-02-21 19:24 ` Phil Turmel
2013-02-21 19:29 ` Stone
2013-02-21 19:45 ` Phil Turmel
2013-02-21 19:46 ` Stone
[not found] ` <51269DE0.5070905@heisl.org>
2013-02-22 10:31 ` stone
2013-02-22 13:53 ` Phil Turmel
2013-02-22 14:58 ` Stone
2013-02-22 15:37 ` Phil Turmel
2013-02-22 18:17 ` Stone
2013-02-22 18:23 ` Phil Turmel
2013-02-22 20:43 ` Stone
2013-02-22 22:35 ` Phil Turmel
2013-02-22 22:42 ` Stone
2013-02-23 2:22 ` Phil Turmel
2013-02-23 3:11 ` Stone
2013-02-23 4:36 ` Phil Turmel
2013-02-23 10:19 ` Stone
2013-02-23 16:10 ` Phil Turmel
2013-02-23 22:26 ` Stone
2013-02-23 23:49 ` Phil Turmel
2013-02-24 0:13 ` Stone
2013-02-24 4:04 ` Phil Turmel
2013-02-24 7:10 ` Stone
2013-02-24 14:15 ` Phil Turmel
2013-02-24 18:22 ` Stone
2013-02-24 18:33 ` Phil Turmel
2013-02-24 19:23 ` Stone
2013-02-24 19:51 ` Phil Turmel
2013-02-24 20:15 ` Stone
2013-02-24 20:25 ` Phil Turmel
2013-02-24 20:38 ` Stone
2013-02-24 20:44 ` Phil Turmel
2013-02-24 20:47 ` Stone
2013-02-25 9:06 ` stone
2013-02-25 18:31 ` Stone
2013-02-25 20:11 ` Stone
2013-02-26 0:19 ` Phil Turmel
2013-02-27 7:26 ` Stone
2013-02-27 19:04 ` Stone
2013-02-27 19:33 ` Hans-Peter Jansen
2013-02-27 19:51 ` Stone
2013-03-02 17:13 ` Phil Turmel
[not found] ` <5127B0AB.5040108@heisl.org>
2013-02-22 18:30 ` Phil Turmel
2013-02-21 22:29 ` Chris Murphy
2013-02-21 22:34 ` Phil Turmel
2013-02-21 22:20 ` Chris Murphy
2013-02-21 22:26 ` Phil Turmel
2013-02-21 13:15 ` Phil Turmel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=51266D73.5020700@turmel.org \
--to=philip@turmel.org \
--cc=linux-raid@vger.kernel.org \
--cc=stone@heisl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.