From: Olivier Mehani <shtrom@ssji.net>
To: linux-hotplug@vger.kernel.org
Subject: Re: difference between gentoo=nodevfs devfs=nomount
Date: Tue, 21 Sep 2004 20:53:19 +0000 [thread overview]
Message-ID: <20040921225319.13bbff6b.shtrom@ssji.net> (raw)
In-Reply-To: <40AD120E.6020209@wanadoo.fr>
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On Thu, 20 May 2004 22:16:14 +0200
Nicolas DELY <nanouck.dely@wanadoo.fr> wrote:
> I'm a french student, and I'm very interested on udev and hotplug.
me too :)
> 1) With gentoo=nodevfs, kernel stops because it cannot find my / fs .
> There is no symlink in /dev (/dev/hdaX --> /dev/ide/..../partX) but
> there is a rule in /etc/udev/rules.conf :
> # devfs-names for ide-devices (uncomment only one)
> # /dev/ide/.../{disc,cd} and /dev/{cdroms,discs}/* type names
> BUS="ide", KERNEL="hd*", PROGRAM="/etc/udev/scripts/ide-devfs.sh %k %b
devfs=nomout is a kernel option, it disables the auto mounting of the
devfs filesystems on /dev, I don't know about the gentoo=nodevfs, which,
obviously, is a gentoo argument.
The problem with the devfs=nomount and gentoo is that gentoo always used
devfs, and hasn't a static /dev to rely on when devfs isn't mounted. I
think I saw packages made by gentoo containing the basic /dev entry so
that you don't encounter this type of problem before you start_udev.
> 2) I don't understand why use ide-cd instead of ide-scsi, with ide-cd
> udev doesn't create node in /dev in order to mount cdrom. Whereas with
> ide-scsi /dev/sr0 is created and I can mount it. Is ide-cd for burn
> cds?
As of kernel 2.6, it is now possible to burn cd without using ide-scsi
(eg: cdrecord dev=/dev/hdX). ide-cd is the normal driver for ATAPI
cd-rom drives. Have a look at you udev log to see how it handles your
cd-rom drive, it works fine for me.
> 3) On my second computer, i have the same config but with
> nvidia-drivers. I run gdm and it works fine execept duplicated symbols
> (xorg-x11) but it is impossible to switch consoles with ctrl-alt-fX,
> in fact X freeze. The framebuffer doesn't work very well, i cannot
> obtain vga=791 : 1024x768, maybe it is because nvidia module is not
> load at kernel boot time?
It is indeed recommended to load the nvidia modules at boot time so that
udev gets the time to create the devices nodes, but it doesn't seems to
me that your problem is related to this issue.
--
Olivier Mehani <shtrom@ssji.net>
PGP fingerprint = 3720 A1F7 1367 9FA3 C654 6DFB 6845 4071 E346 2FD1
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prev parent reply other threads:[~2004-09-21 20:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-20 20:16 difference between gentoo=nodevfs devfs=nomount Nicolas DELY
2004-05-20 23:36 ` Greg KH
2004-05-21 22:14 ` Mike Frysinger
2004-05-21 22:14 ` Mike Frysinger
2004-09-21 20:53 ` Olivier Mehani [this message]
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