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From: Samuel Tardieu <tardieu@gmail.com>
To: schmidt@naa.net
Cc: linux-raid@vger.kernel.org
Subject: Re: Debian/raid1/mdadm/devices not created at boot time
Date: Wed, 15 Dec 2004 13:54:01 +0100	[thread overview]
Message-ID: <e626068b04121504545fbb93cf@mail.gmail.com> (raw)
In-Reply-To: <41C031FD.1020809@chemie.uni-erlangen.de>

> I just overflew the link you gave. There the partition type "fd"
> approach is used, which needs either compiled-in raid functionality or
> raid as a module in the initial ramdisk (which is both at least fo Woody
> not the standard case; I built a bootable cd with a kernel with
> compiled-in raid support so that I could install directly onto a raid).

I have raid as a module in the initrd.
 
> If you want the disks to be started by the mdadm call in that script,
> then the devices shouldn´t be assembled (or even tried to) by
> autodetection before. Try changing the type back to 83/82 or whatever fs
> you use.

It won't change anything (I had 83 before I noticed I forgot this
part), but I understand what you're saying.

> What exactly does lead you to the thought that /dev/md0 and /dev/md1 do
> not exist? Are the actual entries in /dev issing? If so, why are they
> missing again after you made them wit MAKEDEV?

When I get the maintenance root prompt, I see that /dev/md0 and
/dev/md1 are missing from /dev. When I reboot, they have disappeared
again.

Although nothing appears in mnttab, I suspect my system may be using devfs:

willow# df -k /dev
Filesystem           1K-blocks      Used Available Use% Mounted on
none                      5120      2944      2176  58% /dev

At boot time, no entries are created in this devfs for /dev/md0 and
/dev/md1. How can I create them? I thought loading the md module from
initrd would be enough but it looks like it isn't.

  Sam
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  parent reply	other threads:[~2004-12-15 12:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-15  9:38 Debian/raid1/mdadm/devices not created at boot time Samuel Tardieu
     [not found] ` <41C031FD.1020809@chemie.uni-erlangen.de>
2004-12-15 12:54   ` Samuel Tardieu [this message]
2004-12-15 12:57 ` Norman Schmidt

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