Reserving an ATA interface
Quoted 3 lines
So every time you remove your disks from one of your PCI IDE controllers, your ide-cs will get diffirent hwif and drives mappings and your RAID on ide-cs won't be recognized ;-)
I don't know what happens with hotplug, but md with persistent
superblocks and autorun (partition type 0xfd) has stable names. It only whines a bit when the underlying device names change...