From: Neil Brown <neilb@suse.de>
To: Iain Rauch <groups@email.iain.rauch.co.uk>
Cc: "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>,
Justin Piszcz <jpiszcz@lucidpixels.com>
Subject: Re: RAID 6 grow problem
Date: Sun, 3 Jun 2007 08:07:26 +1000 [thread overview]
Message-ID: <18017.59934.688277.311357@notabene.brown> (raw)
In-Reply-To: message from Iain Rauch on Saturday June 2
On Saturday June 2, groups@email.iain.rauch.co.uk wrote:
> > raid6 reshape wasn't added until 2.6.21. Before that only raid5 was
> > supported.
> > You also need to ensure that CONFIG_MD_RAID5_RESHAPE=y.
>
> I don't see that in the config. Should I add it? Then reboot?
You reported that you were running a 2.6.20 kernel, which doesn't
support raid6 reshape.
You need to compile a 2.6.21 kernel (or
apt-get install linux-image-2.6.21-1-amd64
or whatever) and ensure that CONFIG_MD_RAID5_RESHAPE=y is in the
.config before compiling.
>
> I used apt-get install mdadm to first install it, which gave me 2.5.x then I
> downloaded the new source and typed make then make install. Now mdadm -V
> shows "mdadm - v2.6.2 - 21st May 2007".
> Is there anyway to check it is installed correctly?
The "mdadm -V" check is sufficient.
NeilBrown
next prev parent reply other threads:[~2007-06-02 22:07 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.0706021232040.13184@p34.internal.lan>
2007-06-02 21:26 ` RAID 6 grow problem Iain Rauch
2007-06-02 21:31 ` Justin Piszcz
2007-06-02 21:33 ` Justin Piszcz
2007-06-02 21:38 ` Neil Brown
2007-06-02 21:55 ` Iain Rauch
2007-06-02 22:07 ` Neil Brown [this message]
2007-06-02 22:35 ` Iain Rauch
2007-06-03 23:33 ` Daniel Korstad
2007-06-04 6:47 ` RAID6 clean? Guy Watkins
2007-06-04 6:59 ` Neil Brown
2007-08-18 5:40 ` Guy Watkins
2007-06-04 20:29 ` RAID 6 grow problem Bill Davidsen
2007-06-05 17:08 ` Iain Rauch
2007-06-05 19:21 ` Daniel Korstad
2007-06-05 21:26 ` Jon Nelson
2007-06-06 0:46 ` Neil Brown
2007-06-10 19:18 ` Iain Rauch
2007-06-10 20:17 ` Justin Piszcz
2007-06-06 15:06 Daniel Korstad
2007-06-06 15:38 ` Jon Nelson
2007-06-07 4:44 ` Neil Brown
-- strict thread matches above, loose matches on Subject: below --
2007-06-02 15:30 Iain Rauch
2007-06-02 16:19 ` Justin Piszcz
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