Comment 1 for bug 1490088

Workaround is:

service lvm2-lvmetad stop

Problem is that lvmetad is designed to cache device metadata on discovery, which (should) come from specialised udevd rules. In the chroot there is no init/udevd running so even re-attaching the loop devices doesn't cause the PVs to be scanned.

There is a RedHat mailing list reference to this issue at:

http://www.redhat.com/archives/linux-lvm/2014-October/msg00043.html