From: Ethan Wilson <ethan.wilson@shiftmail.org>
To: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Can I replace raid6 disk using dd?
Date: Tue, 19 Aug 2014 04:30:48 +0200 [thread overview]
Message-ID: <53F2B6D8.4030208@shiftmail.org> (raw)
In-Reply-To: <CABY_QbV8=y_VnsYk6XC0MEZ7-Np-20PoJLsyKoZA6BzdvUMguA@mail.gmail.com>
On 18/08/2014 21:26, Ram Ramesh wrote:
> I had a recent disk failure in my 4x2TB raid6 and as a temporary fix I
> added a 4tb drive to prevent the drive from being degraded while I
> researched for a new drive.
>
> Now that I have purchased a new drive, I am wondering if it is ok to
> simply dd the first 2tb of the 4tb drive to replace the drive. I am
> asking because my case/motherboard does not have another HD slot to
> add the new disk
> in parallel with raid6. I was thinking of shutting down the machines,
> moving the 4tb memmebr and the new drive to another machine, making
> image copy (only 2tb), and putting the
> 2tb drive back in the original machine and rebooting. Will this work?
I think it should work, if metadata is 1.1 or 1.2 . I'm not sure if it
is 1.0 .
You can also attach it via USB with an adapter, and do a replace (look
up "want_replacement") then shutdown, swap the drives, and turn on again.
next prev parent reply other threads:[~2014-08-19 2:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-18 19:26 Can I replace raid6 disk using dd? Ram Ramesh
2014-08-19 2:30 ` Ethan Wilson [this message]
2014-08-19 2:49 ` Ram Ramesh
2014-08-19 7:09 ` Killian De Volder
2014-08-19 9:08 ` Ethan Wilson
2014-08-19 13:42 ` Ram Ramesh
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