Quote:
I thought this would only resize the overall volume, not the partitions in it...?


Isn't that vgreduce? I use lvresize every time I run out of space in my videos partition. I keep about 40G unpartitioned in the volume group for situations like that.

Quote:
I did some searching and somewhere it said that I needed to unmount the partition when I decreased the size, which I guess is a bit difficult, unless I boot from a rescuedisk/livecd?


Isn't that why you're not supposed to have / in an LVM group?
_________________________
Cheers,

Andy M