I continue to work on this until either solved by self or forum input solves it.
Using forum search prior to posting, no hits. Using google search, found hits within linuxquestions site pertaining to problem.
one hit suggested i look in /sbin. doing so, I find a link to lvm.static
when I run these:
neither lists /sbin in their search paths.
not sure how to add to that search path yet, nor if it is wise to add /sbin to it.
I can run what appears to be an interactive version (subshell initiates) of lvm, if I'm in /sbin, using,
definitely in lvm - pvs command shows a physical volume list.
This solves my immediate problem - how to start lvm.
I'll forgo answers to remaining questions for now:
whether to add /sbin to my search path and how to add it.