On 22/07/2022 10:57, Nix wrote:
I thought all the work done to assemble raid arrays was done by mdadm? Because that didn't change. Does the kernel md layer also get to say "type wrong, go away"? EW. I'd hope nothing is looking at partition types these days...
As far as I know (which is probably the same as you :-) the kernel knows nothing about the v1 superblock format, so raid assembly *must* be done by mdadm.
That's why, despite it being obsolete, people get upset when there's any mention of 0.9 going away, because the kernel DOES recognise it and can assemble those arrays.
Cheers, Wol