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 This will enable us in the future to upgrade udev on the running system without missing any event. Even without a running udevd, all events will be queued up in the still open socket in pid 1. Note: during package upgrade any incoming packet from the kernel would start udevd. To prevent that, the udev socket needs to be stopped during that window. Or in case a seamless upgrade is wanted, the udev.service needs to be masked while the udev files are replaced on disk. After unmasking the udev.service, the next incoming or already queued events will start the daemon automatically. Kay -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
