tune2fs and raid1

[Roger Searle]

Hi, I have a couple of drives set up as raid1 via software raid with /, 
/boot and /home partitions.  Before I potentially destroy the data, I 
thought I'd check - can tune2fs be used on a multidisk set? ie just do
tune2fs -m 1 /dev/md3 (being the /home partition)?
Cheers,
Roger