When using lvm2 in an area where you might have “disks” which have additional lvm2 setups, you will sometimes get Too Much Information. For this, you can use the filter in /etc/lvm/lvm.conf. Setting this allows you to determine what is checked for lvm2 partitions. The example below Adds anything beginning with /dev/md and Removes anything else.
filter=[ "a|^/dev/md|", "r/.*/" ]