Date: Sat, 15 Jan 2005 19:59:30 -0500
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, Neil Brown <neilb@cse.unsw.edu.au>,
       Daniel Drake <dsd@gentoo.org>, William Park <opengeometry@yahoo.ca>
Subject: Re: 2.6.11-rc1-mm1
Message-ID: <20050116005930.GA2273@zion.rivenstone.net>
Mail-Followup-To: Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org, Neil Brown <neilb@cse.unsw.edu.au>,
	Daniel Drake <dsd@gentoo.org>, William Park <opengeometry@yahoo.ca>
References: <20050114002352.5a038710.akpm@osdl.org>
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From: jhf@rivenstone.net (Joseph Fannin)
Sender: linux-kernel-owner@vger.kernel.org
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On Fri, Jan 14, 2005 at 12:23:52AM -0800, Andrew Morton wrote:
>=20
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.11-rc1/=
2.6.11-rc1-mm1/

> waiting-10s-before-mounting-root-filesystem.patch
>   retry mounting the root filesystem at boot time

    With this patch, initrds seem to get 'skipped'.  I think this is
probably the cause for the reports of problems with RAID too.

    Just after loading the initrd (RAMDISK: Loading 5284KiB [1 disk]
into ram disk...) the kernel tries to mount the real root fs -- if the
necessary drivers are built-in, it proceeds from there; if not, not.

    I'm guessing that when the initrd code calls mount_block_root() to
mount the ramdisk, this bit makes it decide to try to mount the real
root instead:

     if (!ROOT_DEV) {
	ROOT_DEV =3D name_to_dev_t(saved_root_name);
	create_dev(name, ROOT_DEV, root_device_name);
     }
   =20
    Perhaps this should not be done until after the first attempt to
mount fails?  Sorry, I haven't had nearly enough coffee today to
attempt to make a patch. :-)
   =20

--=20
Joseph Fannin
jhf@rivenstone.net

"Bull in pure form is rare; there is usually some contamination by data."
    -- William Graves Perry Jr.

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