[CentOS] permanently add md device

[Tim Nelson]

----- "Wessel | Postoffice" <wessel at postoffice.nl> wrote:
> Hi All
> 
> Currently i'm setting up a 5.4 server and try to create a 3rd raid
> device, when i run:
> $mdadm  --create /dev/md2 -v  --raid-devices=15 --chunk=32
> --level=raid6 /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh
> /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn /dev/sdo
> /dev/sdp /dev/sdq
> 
> the device file "md2" is created and the raid is being configured. but
> somehow /dev/md2 is flushed when i reboot the system , same story if i
> create the file by mknod or MAKEDEV.
> does anyone know a way to solve this issue and permanently add md2 to
> devices?

Ensure your partition type is set to 'fd'. You may also need to add this to your /etc/mdadm.conf.

--Tim