Comment 13 for bug 880645

should btrfs maybe add a hint to add the "--force" option when it refuses to do

"btrfs balance start -mconvert=raid0 /" (maybe "single" instead of "raid0" works too?)

when i tried this command without --force, I just got "invalid argument" only the log file suggested to use "--force"

similarly if would be helpful if "btrfs device delete" would print a hint to do the -mconvert=raid0 (or single) in order to get back to a setup with only one disk

This would help to avoid hours of pointless googling...