Re: udev is too slow creating devices

[Giacomo A. Catenazzi]

Tonnerre wrote:
> On Wed, Sep 15, 2004 at 03:36:06PM +0100, Ian Campbell wrote:
>
> > I wonder if it would be feasible for modprobe (or some other utility) to
> > have a new option: --wait-for=/dev/something which would wait for the
> > device node to appear. Perhaps by:
> > 	- some mechanism based on HAL, DBUS, whatever
> > 	- dnotify on /dev/?
> > 	- falling back to spinning and waiting.
>
>
> This would  end up  as hideous misfeature  as you can't  guarantee the
> device to show up *at* *all*.
>
> The reason udev is there is that we can dynamically respond to created
> device nodes and  devices that show up. They  might have changed since
> the last boot. Maybe they don't show up at all.
>
> Thus you should trigger your actions from /etc/dev.d.

It is right.
But an option --wait would be sufficient.
This option will require modprobe to wait (with a timeout of
x seconds) that hotplug event finish (so if device is created or
not is no more a problem).
Ideally this should be done modifing only hotplug and IMHO
should be enabled by default.

ciao
	cate
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