From: Roman Mamedov <rm@romanrm.ru>
To: Ramon Hofer <ramonhofer@bluewin.ch>
Cc: linux-raid@vger.kernel.org, Stan Hoeppner <stan@hardwarefreak.com>
Subject: Re: Enlarging device of linear array
Date: Sun, 9 Jun 2013 16:47:28 +0600 [thread overview]
Message-ID: <20130609164728.6c21a2f6@natsu> (raw)
In-Reply-To: <20130608201810.26c19641@hoferr-x61s.hofer.rummelring>
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On Sat, 8 Jun 2013 20:18:10 +0200
Ramon Hofer <ramonhofer@bluewin.ch> wrote:
> My home server with a linear raid (md0) containing three raid5 (md1,
> md2, md3) is still working wonderfully. Thanks again Stan!
>
> Now I'm planning to add a fourth raid5 to the linear array.
You should have used LVM instead of md linear to join your RAIDs into a single
block device. LVM allows placing a single logical volume over physical extents
placed in all sorts of non-contiguous, fragmented, overlapping fashions. You
could also transparently migrate portions of those physical extents between
physical arrays without even having to unmount the filesystem that you have on
the LV.
--
With respect,
Roman
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next prev parent reply other threads:[~2013-06-09 10:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-08 18:18 Enlarging device of linear array Ramon Hofer
2013-06-09 8:31 ` Stan Hoeppner
2013-06-09 10:38 ` Sam Bingner
2013-06-10 16:58 ` Ramon Hofer
2013-06-09 10:47 ` Roman Mamedov [this message]
2013-06-09 11:52 ` Stan Hoeppner
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