From: Phil Turmel <philip@turmel.org>
To: Dominique <dcouot@hotmail.com>
Cc: linux-raid mailing list <linux-raid@vger.kernel.org>
Subject: Re: Raid 5 to 6 migration
Date: Fri, 01 Feb 2013 12:50:45 -0500 [thread overview]
Message-ID: <510C0075.9010908@turmel.org> (raw)
In-Reply-To: <BLU0-SMTP433B0BCF64D448CC81098D2C91C0@phx.gbl>
On 02/01/2013 12:17 PM, Dominique wrote:
> Hi list,
>
> I was wondering what would be the best way to convert a 6 hdd raid 5 to
> raid 6. Ideally without having to reformat everything and lose all the
> data in the process. I have backups of the data but I don't look forward
> reinstalling everything on that server.
1) Add a seventh drive to the system.
You can do this on the run if you have hotplug-capable sata ports or sas
ports.
2) Add that drive to the array w/ "mdadm --add"
3) Convert array to raid6 w/ "mdadm --grow --level=raid6"
You can do 2 & 3 on the run.
4) Monitor /proc/mdstat to see when it finishes.
HTH,
Phil
next prev parent reply other threads:[~2013-02-01 17:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-01 17:17 Raid 5 to 6 migration Dominique
2013-02-01 17:50 ` Phil Turmel [this message]
2013-02-01 18:16 ` Roman Mamedov
2013-02-01 18:19 ` Phil Turmel
2013-02-01 18:49 ` Chris Murphy
2013-02-01 22:04 ` Phil Turmel
2013-02-01 22:38 ` Chris Murphy
[not found] ` <COL114-W137DD8871889508BBF087BC91C0@phx.gbl>
2013-02-01 18:22 ` Phil Turmel
2013-02-03 10:00 ` Roy Sigurd Karlsbakk
2013-02-03 14:30 ` Phil Turmel
2013-02-03 22:01 ` Robin Hill
2013-02-04 12:51 ` Dominique
2013-02-04 18:39 ` Phil Turmel
2013-02-05 0:58 ` Brad Campbell
2013-02-05 10:36 ` Dominique
2013-02-05 13:04 ` Phil Turmel
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