From: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
To: Phil Turmel <philip@turmel.org>
Cc: Oliver Schinagl <oliver+list@schinagl.nl>, linux-raid@vger.kernel.org
Subject: Re: Expanding array with multiple devices
Date: Sat, 2 Mar 2013 18:15:56 +0100 (CET) [thread overview]
Message-ID: <25032068.12.1362244556592.JavaMail.root@zimbra> (raw)
In-Reply-To: <513232B4.7030404@turmel.org>
> On 03/02/2013 09:07 AM, Roy Sigurd Karlsbakk wrote:
> >> While expanding an existing raid is as simple as mdadm --add,
> >> followed
> >> by an mdadm --grow, How would you go about this when expanding it
> >> with
> >> multiple devices.
> >
> > Given a RAID-5 on /dev/sd[bcde], I'd do
> >
> > # mdadm --add /dev/md0 /dev/sd[fghi]
> > # mdadm --grow --level=6 --raid-devices=8
> >
> > No need to create a new RAID and then move the data.
>
> You missed the bit where he states he needs to use mkfs to switch
> filesystem features.
Oh, sorry. Then why not start off with an identical RAID-5, move the data, and then expand as above? No dangling "missing" drives, just plain and simple.
Vennlige hilsener / Best regards
roy
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Roy Sigurd Karlsbakk
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next prev parent reply other threads:[~2013-03-02 17:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-28 20:27 Expanding array with multiple devices Oliver Schinagl
2013-03-01 6:52 ` Mikael Abrahamsson
2013-03-02 11:52 ` Oliver Schinagl
2013-03-02 14:07 ` Roy Sigurd Karlsbakk
2013-03-02 17:11 ` Phil Turmel
2013-03-02 17:15 ` Roy Sigurd Karlsbakk [this message]
2013-03-02 17:22 ` Phil Turmel
2013-03-02 17:31 ` Mikael Abrahamsson
2013-03-02 19:14 ` Roy Sigurd Karlsbakk
2013-03-03 3:22 ` Mikael Abrahamsson
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