Re: udev and systemd socket activation

[Greg KH <greg@kroah.com>]

On Fri, Apr 15, 2011 at 01:34:50AM +0200, Kay Sievers wrote:
> Just a heads up,
> udev -git has new systemd socket/service files that will work only
> with current systemd -git. Older systemd versions with this version of
> udev will not properly boot up!
> 
> The new udev.socket file will instruct systemd to bind the udev
> control socket and the netlink uevent socket, and let systemd
> auto-start udevd when any events arrive.
> 
> It looks like this:
>   # udevd runs
>   $ pidof udevd
>   4544 4543 4401
> 
>   # kill it
>   $ udevadm control --exit
>   $ pidof udevd
> 
>   # trigger any device event
>   $ echo change > /sys/class/mem/null/uevent
> 
>   # udevd is back and has handled this event
>   $ pidof udevd
>   4624 4623

Very cool stuff, thanks for doing this work!

greg k-h