From: Roman Mamedov <rm@romanrm.net>
To: Chris Murphy <lists@colorremedies.com>
Cc: Eric Wong <e@80x24.org>, Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: raid1 with several old drives and a big new one
Date: Sat, 1 Aug 2020 14:05:51 +0500 [thread overview]
Message-ID: <20200801140551.76348735@natsu> (raw)
In-Reply-To: <CAJCQCtS6fHYGBiHpqAJPu+-EoSzEKZ5YEaj4QjNxqPvO+JTACw@mail.gmail.com>
On Thu, 30 Jul 2020 20:57:38 -0600
Chris Murphy <lists@colorremedies.com> wrote:
> On Thu, Jul 30, 2020 at 6:16 PM Eric Wong <e@80x24.org> wrote:
> >
> > Say I have three ancient 2TB HDDs and one new 6TB HDD, is there
> > a way I can ensure one raid1 copy of the data stays on the new
> > 6TB HDD?
>
> Yes. Use mdadm --level=linear --raid-devices=2 to concatenate the two
> 2TB drives.
Or go with a RAID0 for this, to get a nice performance benefit as well. It is
a bad idea in any case to hope for any data recoverability from a half-failed
linear "array".
--
With respect,
Roman
next prev parent reply other threads:[~2020-08-01 9:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-31 0:16 raid1 with several old drives and a big new one Eric Wong
2020-07-31 2:57 ` Chris Murphy
2020-07-31 3:22 ` Eric Wong
2020-07-31 3:35 ` Chris Murphy
2020-08-01 9:05 ` Roman Mamedov [this message]
2020-07-31 8:29 ` Alberto Bursi
2020-07-31 10:06 ` Eric Wong
2020-07-31 16:13 ` Adam Borowski
2020-08-01 3:40 ` Zygo Blaxell
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