Re: [uml-user] The best way for /dev/

[Jim C. <ji...@ma...>]

On Wed, 13 Apr 2005, Fabio Ricci wrote:

> Which is the best for handling /dev fs?
> i have tried to use udev with hotplug but it seems that the boot phase is too
> much long,
> instead with devfs i cant see some link on /dev.

In kernel 2.6.x, devfs is no longer Politically Correct, but as you say, 
udev and UML have a bad interaction so that on my machine it takes fully 
five minutes to boot the guest.  The problem is that setup scripts are 
being run in /etc/udev.d that are not relevant to the UML devices and that 
have timeouts.  If you can export UDEV_NO_SLEEP=1 and UDEV_NO_DEVD=1 for
most devices when running /sbin/udev, that will speed it up dramatically.  
See: http://www.math.ucla.edu/~jimc/documents/uml-install-suse.html
and search for "/sbin/udev" for a script that does this.

James F. Carter          Voice 310 825 2897    FAX 310 206 6673
UCLA-Mathnet;  6115 MSA; 405 Hilgard Ave.; Los Angeles, CA, USA  90095-1555
Email: ji...@ma...    http://www.math.ucla.edu/~jimc (q.v. for PGP key)