From: lsorense@csclub.uwaterloo.ca (Lennart Sorensen)
To: Stephen Mueller <stephen@mueller.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: RAID array is gone, please help
Date: Thu, 23 Mar 2017 17:01:33 -0400 [thread overview]
Message-ID: <20170323210133.GP14186@csclub.uwaterloo.ca> (raw)
In-Reply-To: <a135b9a4-ab7f-c368-fc1a-db53f46ea631@mueller.org>
On Thu, Mar 23, 2017 at 09:09:39PM +0100, Stephen Mueller wrote:
> OK, I used gdisk to remove the GPT and MBR from each disk.
> mdadm --assemble still doesn't work... says it can't find the
> superblock. The mdadm --examine commands also say that no
> superblock is detected.
Yes the GPT overwrite the superblock. The GPT uses the first 17KB of
the disk, and the superblock was at 4KB from the start.
> I guess I'll go ahead with --create...
At least given the data should start at 1MB from the start, it should
not have been overwritten.
I do always like disk images before I try anything like that. I am never
quite sure what create will do although it will likely do the right
thing at least if you get the order right.
--
Len Sorensen
next prev parent reply other threads:[~2017-03-23 21:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-23 16:49 raid
2017-03-23 17:37 ` Lennart Sorensen
2017-03-23 18:09 ` raid
2017-03-23 19:27 ` Lennart Sorensen
2017-03-23 19:38 ` Stephen Mueller
2017-03-23 19:59 ` Lennart Sorensen
2017-03-23 20:09 ` Stephen Mueller
2017-03-23 21:01 ` Lennart Sorensen [this message]
2017-03-23 21:02 ` Stephen Mueller
2017-03-23 21:09 ` Lennart Sorensen
2017-03-23 21:11 ` Stephen Mueller
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