From: Wols Lists <antlists@youngman.org.uk>
To: "David C. Rankin" <drankinatty@suddenlinkmail.com>,
mdraid <linux-raid@vger.kernel.org>
Subject: Re: mount(2) system call failed: Structure needs cleaning?
Date: Fri, 27 Oct 2017 11:25:05 +0100 [thread overview]
Message-ID: <59F30981.1050205@youngman.org.uk> (raw)
In-Reply-To: <3f1359a2-f07a-f75e-605a-0d271df11913@suddenlinkmail.com>
On 27/10/17 11:02, David C. Rankin wrote:
> How best to clear this array completely so that it doesn't cause mdadm any
> problem on the rebuild from the good array?
My favourite ... "dd if=/dev/zero of=/dev/sdX". Takes a
LLoooonnnnnngggggggg time.
But there is an option to mdadm that will wipe the superblock. I don't
know whether it will wipe both at once, I'd try it three times and if it
comes back with "can't find superblock" the third time you know it's
done :-) I've never used it so I can't say how it works.
Oh - and when you add it back to the good disk, use --add, and NOT
--re-add. That implies to mdadm that it's a new disk needing re-config.
Cheers,
Wol
prev parent reply other threads:[~2017-10-27 10:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 0:32 mount(2) system call failed: Structure needs cleaning? David C. Rankin
2017-10-27 0:59 ` David C. Rankin
2017-10-27 9:45 ` Wols Lists
2017-10-27 10:02 ` David C. Rankin
2017-10-27 10:25 ` Wols Lists [this message]
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