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mdadm device not created at boot

Matthew Kowalski wrote:
> 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?

do you have a mdadm.conf file in /etc ?
if not, create one with:

mdadm --detail --scan --verbose > /etc/mdadm.conf

after you've re-assembled it and before rebooting.

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