Vinum ... to oblivion?

[asv]

Hi everyone,
I sadly realised that the gvinum section in handbook is gone (possibly
since quite a while already). Nonetheless the tool is still available on
10.1-RELEASE.
But I don't understand why bringing this valuable tool to oblivion as I
don't see other alternatives to (for example) achieve the following:
MIRRORING + LVM + UFS2 (with MAC labels)

- ZFS doesn't support MAC labels
- gmirror doesn't provide LVM

if I look for lvm in the man the only thing found is:
geom_linux_lvm(4)        - GEOM based Linux LVM logical volume mapping

but I'm not really sure what's that as I cannot find anything related
under the handbook index at
19. GEOM: Modular Disk Transformation Framework

neither I can find anything on the man pages apart for the
aforementioned entry through "man -k lvm"

Am I missing something?
Any hint would be appreciated, tnx in advance.