Installing AMD RAID on a p620 after the fact

p620ubunturaid.md

Some preliminary advice

• DISABLE SECURE BOOT!!!! Else the rcraid.ko module will not load!

• THE MODULE HAS TO BE MANUALLY RECOMPILED AFTER KERNEL UPDATES!!! ELSE THE OS MAY NOT BOOT!!!!!

• It seems that it has to be installed during OS install, trying to install it after OS install seems difficult -> It worked, see instructions below!

• The internet says that it doesn't work for Ubuntu 20.04.2 (Apr 2021), Lenovo promises to fix it. https://forums.lenovo.com/t5/ThinkStation-Workstations/Linux-AMD-storage-RAID-driver-and-RAIDXpert2-Management-Application-for-the-ThinkStation-P620/m-p/5050961 -> I still got it to work.

• This will disable SATA and NVME, so you have to set ALL controllers to RAID mode, else the Disks will not show up.

How to make it work

• Download the drivers from the Lenovo Support website
• go to the driver directory and the ubuntu driver subdirectory

chmod u+x load_amdraid
cp load_amdraid /usr/share/initramfs-tools/scripts/init-premount/                               

Edit /etc/default/grub and blacklist ahci and nvme:

GRUB_CMDLINE_LINUX_DEFAULT="modprobe.blacklist=ahci,nvme" 

Generate the GRUB config

grub-mkconfig -o /boot/grub/grub.cfg
RELEASE=$(uname -r)                                                                               
depmod -a $RELEASE                                                                               
mkinitramfs -o /boot/initrd.img-$RELEASE $RELEASE                                                

This blacklists SATA and NVME devices!!!! The os will NOT boot if the raid driver fails to load!

The raid arrays will show up as /dev/sdX! For mounting see the non-raid

There must be an official driver from AMD somewhere, maybe you could try that one.