From: Robin Hill <robin.hill47@ntlworld.com>
To: Mike Viau <viaum@sheridanc.on.ca>
Cc: linux-raid@vger.kernel.org
Subject: Re: Raid 5 to Raid 1 (half of the data not required)
Date: Wed, 24 Aug 2011 08:34:54 +0100 [thread overview]
Message-ID: <20110824073454.GA1925@cthulhu.home.robinhill.me.uk> (raw)
In-Reply-To: <20110824123938.6743e87c@notabene.brown>
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On Wed Aug 24, 2011 at 12:39:38 +1000, NeilBrown wrote:
> On Tue, 23 Aug 2011 22:18:12 -0400 Mike Viau <viaum@sheridanc.on.ca> wrote:
>
> >
> > I am not sure how crack-pot of a solution this would be, but could I:
> >
> > 1/ mdadm -r /dev/md0 /dev/sde1
> > Remove /dev/sde1 from the raid 5 array
>
> Here you have lost your redundancy .... your choice I guess.
>
> >
> > 2/ dd if=/dev/zero of=/dev/sde1 bs=512 count=1
> > This clears the msdos mbr and clears the partitions
> >
> > 3/ parted, fdisk or cfdisk to create a new 1TB (or less is possible as well) ext4 partition on /dev/sde
> >
> > 4/ mkfs.ext4 /dev/sde1
> >
> > 5/ cp -R {mounted location of degraded /dev/md0 partition} {mounted location of /dev/sde1 partition}
> > Aka backup
> >
If you're wanting to backup, "cp -a" would be better than "cp -R",
otherwise you lose attributes & symlinks.
Cheers,
Robin
--
___
( ' } | Robin Hill <robin@robinhill.me.uk> |
/ / ) | Little Jim says .... |
// !! | "He fallen in de water !!" |
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next prev parent reply other threads:[~2011-08-24 7:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-23 23:41 Raid 5 to Raid 1 (half of the data not required) Mike Viau
2011-08-24 0:46 ` NeilBrown
[not found] ` <BAY148-W29A568212EC52E4C4BC52EF110@phx.gbl>
2011-08-24 2:39 ` NeilBrown
2011-08-24 7:34 ` Robin Hill [this message]
2011-08-24 8:03 ` Gordon Henderson
2011-08-24 8:21 ` Mikael Abrahamsson
2011-08-24 8:42 ` NeilBrown
2011-08-26 0:11 ` Mike Viau
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