It looks like running Ubuntu LiveCD removed a label from my swap partition, so it is no longer recognized by Fedora as a swap. e2label doesn't want to set label since it is not a ext2/ext3 partition. What is the right way to set label on swap partition?
It appears you could be out of luck: https://bugzilla.redhat.com/beta/show_bug.cgi?id=127892
Paul.