I'm just now trying to investigate this but I'm not reproducing the error. Not sure but it may just be an issue with the name you used for the VG or LV. Please tell me the names you used for both.
Did the problem begin right when you created the VG and LV? Or did it happen later?
I'll use LVM in my vm for a while. Please give some feed back on questions above.
Keep names simple... I used VG1 and LV1.