> The only other mystery right now is why I can't raidhotremove a disk.
The spec of "raidhotremove" ...
> It says it is busy (it is).
Yup.
> I was expecting raidhotremove to be able to yank it out anyway.
I have heard that it isn't done (yet) because of the fear of not getting the
checks that what remains is a valid configuration right (no, I wasn't quite
sure why that would be particularly hard either !) so that only spare disks
can be removed.
[ I stop the device, use my script to disable a disk, then start it ]