On 3/28/19 10:23 PM, Raphaël Halimi wrote: > So my question is simple : do you think it's a bug in mdadm, the kernel > RAID driver, or the motherboard firmware ? Hi, Unfortunately, there is no simple answer or easy fix for this. Intel RST is not supported (officially) on Linux, only RSTe/VROC is, but since the RAID metadata format is generally the same, RST RAID usually just works with mdadm. The problem here is that enabling RAID mode in the BIOS causes that the drives are not visible. When in RAID mode, the PCH PCIe ports for NVMe drives are hidden and NVMe registers are remapped under the AHCI BAR. The standard Linux nvme and ahci drivers can't handle that. There had been some patches proposed to make this work but they did not get accepted. You can try to apply them and rebuild your kernel: https://marc.info/?l=linux-ide&m=147709610621480&w=2 Or you can disable RAID mode and export IMSM_NO_PLATFORM=1 for mdadm. Your array should assemble in Linux. The downside: Windows will not see the RAID. You will have to enable RAID mode every time before booting to Windows... Regards, Artur
