Last week I reinstalled my fedora machine to achieve a clean, fresh and in the moment not working f14 installation.
I decided to make a raid0 device with two equal sata-drives. First i thought everything worked fine. I could access to the raid0 device made a gpt-partitiontable and made an ext4 partition.
But every time i reboot my machine the raid-array is broken. I can reassemble it by hand but this is nasty. i figured out, that the problem exist anywhere before or at the moment udev starts. This guy here seems to have exactly the same problem.
In some cases removing the kernel parameter rd_NO_MD in grub.conf fixes this problem. But I have no idea what this parameter does. Even here is no parameter with this name:
Has anyone an idea what this parameter exactly does? I can’t imagine that this parameter prevents linux to reassemble raid-arrays at boot-time.