swap would be a seperate partition, not a filesystem on / try
if you have sfdisk this will list the partition table and one should be labeled swap here's the output on one of my boxes...
[root@linuxtorrents root]# sfdisk -l
Disk /dev/hdc: 4092 cylinders, 16 heads, 63 sectors/track
Units = cylinders of 516096 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/hdc1 * 0+ 202 203- 102280+ 83 Linux
/dev/hdc2 203 3051 2849 1435896 83 Linux
/dev/hdc3 3052 4091 1040 524160 82 Linux swap <<----swap partition
/dev/hdc4 0 - 0 0 0 Empty
Hope this helps,
linux_terror