I found your reply in another topic.
Re: VAL stops with latest ArchLinux - [ID# 02133145]
Veeam Logoby PTide » Wed May 03, 2017 9:41 am
Please try to set units=”h” in /etc/lvm/lvm.conf.
I was able to add the "units="h"" into my lvm.conf and after a reboot veeam does not give the LVM Instance error anymore.