>df shows how much free space there is on the *filesystem*. Even if the >filesystem isn't full, it can occupy the entire lvm, which occupies the entire >volume group. If you have only one filesystem on the lvm, then you may or may >not have a problem, depending on what filesystem you are using. If you are >using ext2 or ext3, then you can probably do an ext2resize to shrink it, followed >by an lvreduce to reduce the size of the partition that the filesystem lives on, but >*DANGER* *DANGER* *DANGER*. Reducing the size of an existing >filesystem is inherently dangerous, so back up, tread with caution, and don't >blame me when a meteorite flattens your house. If you are using reiserfs, jfs, or >xfs, you are probably out of luck, as these filesystems don't currently support >reduction.