Need to expand /usr partition
But seems like I can't. I currently have /, swap, /usr and /home partitions, so I thought I'd resize /home a bit to expand /usr
But while I can umount /home no problem, I'm unable to unmount /usr since it always says it's busy. I've logged out all users except root, killed X and several other processes, but it seems that something is always using it.
Since basically all processes seem to use /usr, is there any way to umount and resize it, or do I have to reinstall it (this time with just / and swap and maybe /home partitions)