From: Luca Berra <bluca@comedia.it>
To: linux-raid@vger.kernel.org
Subject: Re: Partitioned raid and major number
Date: Sat, 28 Feb 2004 08:27:38 +0100 [thread overview]
Message-ID: <20040228072737.GC27430@percy.comedia.it> (raw)
In-Reply-To: <20040228010916.GC13404@drinkel.cistron.nl>
On Sat, Feb 28, 2004 at 02:09:16AM +0100, Miquel van Smoorenburg wrote:
>Hmm. With a dynamic major, the system might fail at checking the root
>file system at boot. At that time, /dev is still read-only, and
>/dev/md/d0p1 might not be the correct device yet.
>
>So either mdp needs its own partition number, or we need a /dev/root
>device that's an alias for the current root (like /dev/console).
>
>Fortunately, that's very easy. Which makes me wonder why this hasn't
>been done before .. what am I overlooking ?
>
>Patch below uses 4,1 which is just arbitrary, ofcourse. Comments ?
>
I was missing this feature from linux, and i don't know why it was not
done before...
Having /dev/root also solves the similar problem of ppl whose root is on a
device-mapper like myself. (dm has dynamic majors)
Regards,
L.
--
Luca Berra -- bluca@comedia.it
Communication Media & Services S.r.l.
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next prev parent reply other threads:[~2004-02-28 7:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-25 14:56 Partitioned raid and major number Miquel van Smoorenburg
2004-02-25 18:46 ` H. Peter Anvin
2004-02-25 23:25 ` Neil Brown
2004-02-26 21:51 ` Miquel van Smoorenburg
2004-02-27 0:21 ` Neil Brown
2004-02-27 1:17 ` Neil Brown
2004-02-27 16:56 ` Miquel van Smoorenburg
2004-02-28 1:09 ` Miquel van Smoorenburg
2004-02-28 7:27 ` Luca Berra [this message]
2004-03-01 0:54 ` Neil Brown
2004-03-01 1:04 ` Miquel van Smoorenburg
2004-03-02 0:36 ` H. Peter Anvin
2004-03-01 15:38 ` Miquel van Smoorenburg
2004-03-09 15:34 ` /dev/root (was: Re: Partitioned raid and major number) Miquel van Smoorenburg
2004-03-10 2:05 ` Neil Brown
2004-03-01 0:16 ` Partitioned raid and major number Neil Brown
2004-03-01 0:42 ` Miquel van Smoorenburg
2004-03-01 1:09 ` Neil Brown
2004-03-09 15:32 ` Creating partitionable raid on existing disk (was: Re: Partitioned raid and major number) Miquel van Smoorenburg
2004-03-10 2:41 ` Neil Brown
2004-03-09 16:46 ` Booting from partitioned raid, do_mounts_md.c patch " Miquel van Smoorenburg
2004-03-10 2:36 ` Neil Brown
-- strict thread matches above, loose matches on Subject: below --
2004-02-26 23:01 Partitioned raid and major number Michael
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