/lib/systemd/systemd-udevd --daemon --resolve-names=never
udevadm trigger --action=add
udev要能加载硬盘找到所需的驱动依赖下面的config选项
Networking support (NET)
Networking options CONFIG_UNIX
File systems
CONFIG_INOTIFY_USER
CONFIG_SYSFS
CONFIG_PROC_FS
Device Drivers
Generic Driver Options
CONFIG_DEVTMPFS
Serial ATA and Parallel ATA drivers (libata) (ATA)
AHCI SATA support (SATA_AHCI) CONFIG_SATA_AHCI
/usr/src/linux-3.18.4/lib/kobject_uevent.c
systemd下载（含udev下载）：
http://www.freedesktop.org/software/systemd/
