My motherboard died, so I had to replace it, including the OS.
So I boot first time, do mdadm --assemble --scan, raid assembled without any issues. I share the drive, reboot.
Then it stops recognizing it.
cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md127 : inactive sdb(S) 1953511512 blocks super 1.2 unused devices: <none>
Why did it work the first time, then stopped working all of a sudden?
If I try to force them, it doesnt work:
sudo mdadm --assemble --force /dev/md127 /dev/sdb /dev/sdc /dev/sdd mdadm: /dev/sdb is busy - skipping mdadm: no recogniseable superblock on /dev/sdc mdadm: /dev/sdc has no superblock - assembly aborted