From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Kwee Subject: Re: raid1 boots with one disk only Date: Tue, 8 Mar 2005 09:32:48 +0000 (UTC) Message-ID: References: <2263802DEDF02046B82EB18DE91725ED17A3F2@usahm236.amer.corp.eds.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Bailey, Scott eds.com> writes: > I don't think this is a problem - my root device is on an md device also. > From my Alphaserver (which is conveniently close to hand and alive) I have > this entry in /etc/aboot.conf: > > 0:1/vmlinuz-2.4.27-hamster.8 md=1,/dev/sda2,/dev/sdg2 ro root=/dev/md1 > console=ttyS0 > > In English I am booting from partition 1 of my boot disk, which happens > to be /dev/sda1 (which with /dev/sdg1 forms /dev/md0, which is mounted as > /boot). I am loading a locally-built kernel which has md and lvm and scsi > support built-in (thus no initrd is used). I don't know if that makes a > difference. > > >[...] > > This doesn't look quite right to me, or maybe the messages have just changed > between 2.4 and 2.6. I think that also you have had some possibly > interesting messages roll off the beginning of your dmesg buffer. One, > thought, which I am not confident about, is whether md is built as a module > and loaded from your initrd and therefore does not see the boot command line Hi Scott, thanks a lot for your answers. I posted another message yesterday with my solution to just compile the md and raid1 drivers into the kernel which helped me. It seems that my kernel is a bit more quiet about what it is doing on startup but anyway it is working now, so the rest is pure curiosity. I have tried to put a options md=1,/dev/hda2,/dev/hdc2 to my /etc/modules.conf and boot with old kernel using md and raid1 as modules again. But these options seem to have no effect.