我已经组装了软件 raid1 /dev/md1，并创建了两个分区/dev/md1p1和/dev/md1p2。现在即使重启后我也看不到这两个/dev。
为什么？（udev 服务正在运行）
#fdisk /dev/md1
Command (m for help): p
Disk /dev/md1: 2000.3 GB, 2000346808320 bytes
2 heads, 4 sectors/track, 488365920 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/md1p1 1 9765625 39062498 8e Linux LVM
/dev/md1p2 9765626 488365920 1914401180 8e Linux LVM
# ls /dev/md1*
/dev/md1
# uname -a
Linux xen 2.6.26-2-xen-amd64 #1 SMP Fri Aug 14 10:19:53 UTC 2009 x86_64 GNU/Linux
# partprobe -s
Error: Error informing the kernel about modifications to partition /dev/md1p1 -- Invalid argument. This means Linux won't know about any changes you made to /dev/md1p1 until you reboot -- so you shouldn't mount it or use it in any way before rebooting.
Error: Error informing the kernel about modifications to partition /dev/md1p2 -- Invalid argument. This means Linux won't know about any changes you made to /dev/md1p2 until you reboot -- so you shouldn't mount it or use it in any way before rebooting.
Warning: The kernel was unable to re-read the partition table on /dev/md1 (Invalid argument). This means Linux won't know anything about the modifications you made until you reboot. You should reboot your computer before doing anything with /dev/md1.