Re: trying 068 with Gentoo

[Greg KH <greg@kroah.com>]

On Sat, Jul 29, 2006 at 02:49:56AM +0000, Virgil Anderson wrote:
> Greg KH <greg <at> kroah.com> writes:
> 
> > 
> > On Wed, Aug 31, 2005 at 11:02:39PM +0200, Bob Barry wrote:
> > > I installed udev-068 on Gentoo, installed the new /etc/udev/udev.conf
> > > and /etc/udev/rules.d/50-udev.rules, and restarted with kernel 2.6.13.
> > 
> > You forgot to mention that you ignored the ewarn messages that the 068
> > gentoo release stated that explained how to fix this problem.
> > 
> > Also, this isn't a Gentoo specific mailing list, if you have Gentoo
> > specific problems with udev (like this) please enter a bug into their
> > bugzilla system (bugs.gentoo.org)
> > 
> > thanks,
> > 
> > greg k-h
> > 
> > -------------------------------------------------------
> > SF.Net email is Sponsored by the Better Software Conference & EXPO
> > September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
> > Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
> > Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
> > 
> 
> Actually greg k-h,
> This is NOT a gentoo specific problem ...

But this email was almost a year old, so udev and the kernel have moved
on since then...

> it's a udev / agetty / openvt problem.

Talk to the openvt group about how it works with udev, the people here
really have no idea how to do that, sorry.

> It appears to occur when you move completely away from devfs, such that udevd is
> generating all /dev entries.  The problem is /dev/vc/%d and /dev/tty are
> hardcoded into programs in the kbd and util-linux packages.  For whatever reason
> udev does not properly populate these devices in /dev no mater what you put in
> the control statements - probably because the console is pre-existing when udevd
> comes up. 

Then the startup logic for your distro is incorrect, this should be
properly handled by it.

> There are a number of fixes floating around, none of which really
> work to my satisfaction.  One is to have a /lib/dev space for pre-existing
> devices and then copy it to /dev.  Personally, I would have the software tell
> udevd that device entries are needed, and udevd respond by inserting the
> requested virtual device or whatever into /dev.  If such a mechanism is
> available it certainly is not being used, or well documented.

Why not just do what all other distros do at startup to populate /dev
with the device information from the devices that have been created
before userspace runs?  That involves using either udevstart,
udevtrigger, or a simple shell script, depending on the kernel verison
that you are using.

thanks,

greg k-h

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys -- and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CIDÞVDEV
_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel