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From: Rudy Zijlstra <rudy@grumpydevil.homelinux.org>
To: linux-raid mailing list <linux-raid@vger.kernel.org>
Subject: Re: Safely swapping a disk in a RAID456
Date: Fri, 30 Sep 2011 18:06:57 +0200	[thread overview]
Message-ID: <4E85E921.1020808@grumpydevil.homelinux.org> (raw)
In-Reply-To: <20110930154217.GA11732@albatross.gern.madduck.net>

Hi,

On 09/30/2011 05:42 PM, martin f krafft wrote:
> Dear list,
>
> I would like to swap out a drive in a RAID6 (4 drives), but ideally
> without letting the RAID degrade. I was thinking that it should be
> possible to declare the new disk a copy of the old one, let it sync,
> then remove the old one and let the new one take over, but MD does
> not seem to support that.
If you can stop the array it can be done. Otherwise you will have to 
degrade it while replacing

Replacing without degrade:
- stop the raid
- do a dd from old disk to new disk
- replace the disk
- re-start the raid

Cheers,


Rudy


  reply	other threads:[~2011-09-30 16:06 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-30 15:42 Safely swapping a disk in a RAID456 martin f krafft
2011-09-30 16:06 ` Rudy Zijlstra [this message]
2011-09-30 17:07   ` Andre Noll
2011-09-30 16:28 ` Andre Noll
2011-10-01 14:53   ` David Brown
2011-10-01 15:51     ` Andre Noll
2011-09-30 18:02 ` John Robinson
2011-10-01  3:38   ` Danny Rawlins
2011-10-01 10:32   ` Asdo

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