What does the message "update_metadata found newer metadata on PV" mean?

Issue

• The following messages show up in /var/log/messages:

lvmetad[xxx]: PV <UUID> has outdated metadata for VG <UUID>
lvmetad[xxx]: update_metadata found newer metadata on PV <UUID> seqno <num> for <UUID> <VG_name> seqno <num>
lvmetad[xxx]: update_metadata ignoring outdated metadata on PV <UUID> seqno <num> for <UUID> <VG_name> seqno <num>
lvmetad[xxx]: Cannot use VG metadata for <VG_name> <UUID> from PV <UUID> on <num>
lvmetad[xxx]: update_metadata from pv <UUID> same seqno <num> with unmatching data for <VG_name> <UUID>