“swapon -s” shows swap spaces as “(deleted)” if these are lvm volumes

[root@mylinux]# swapon -s
Filename Type Size Used Priority
/dev/systemvg/swapvol (deleted) partition 4095992 0 -3
According to http://kbase. redhat.com/faq/FAQ_79_4331.shtm we need to
add “swapoff -a && swapon -a” to the end of /etc/rc.d/rc. sysinit
We can also run
#swapoff -a && swapon -a
To fix it live, and we’ll see:
[root@mylinux]# swapon -s
Filename Type Size Used Priority
/dev/systemvg/swapvol partition 4095992 0 -3
114/433