http://forums.gentoo.org/viewtopic-p-4977200.html?sid=7f059910577645d1420023fcb509d6ee
在升级emerge -aC udev后，安好 openrc前千万别重启或关机，要不然就。。。
you can unmerge it temporarily, but be sure to re-emerge it before rebooting / shutting down
make a backup (just in case):
代码: quickpkg --include-config=y udev
after openrc re-emerge udev
代码: emerge -1 udev
在升级emerge -aC udev后，安好 openrc前千万别重启或关机，要不然就。。。
you can unmerge it temporarily, but be sure to re-emerge it before rebooting / shutting down
make a backup (just in case):
代码: quickpkg --include-config=y udev
after openrc re-emerge udev
代码: emerge -1 udev
