As you see, the name of the used program is always displayed in the beginning of the line.
My LVM version is:
vm58820-6:~ # rpm -qf $(which vgs)
I have another vm which is also SLES 11 SP3, having the same lvm version. But there the program name at the beginning is missing (what I think is the right behavior).
This strange behaviour is causing trouble: E.g. the script /etc/init.d/boot.kdump is not running fine because the output of vgs is used to crate the name of a block device which is with this behavior not working properly.