What is purpose of geom_mountver?

[Lev Serebryakov]

Hello, Freebsd-geom.

    I cannot imagine situation when you need geom_mountver -- what is
  purpose of this class?
    I understand, HOW it works and WHAT it does. I don't understand
  "physical meaning" of such BIO queueing. What was goal of author, in
  which situation this could be useful (broken HDD cable is first
  thing come to my mind, and, may be geom_gate?)?

-- 
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>