mdadm device not created at boot

[Matthew Kowalski]

Happy New Year BLU!

I recently setup a software raid 1on ubuntu 7 but every time I reboot
I have to run the mknod command to create /dev/md0 before mdadm can
see the device.  Once I run the command I can use mdadm to assemble
the array and then mount it.   I've setup software raids on ubuntu 9
and never even had to use the mknod command.  Any ideas?