Comment 11 for bug 1479181

Reviewed: https://review.openstack.org/207076
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c15a639dea37f2403e67ac381321d3364163463e
Submitter: Jenkins
Branch: master

commit c15a639dea37f2403e67ac381321d3364163463e
Author: Matt Riedemann <email address hidden>
Date: Wed Jul 29 07:30:38 2015 -0700

    cells: document upgrade limitations/assumptions

    We log a warning when using cells that it's experimental, and we have
    several locations in the docs that say it's experimental, but we have
    never documented that rolling upgrades are not supported and that cells
    deployments must be upgraded in lockstep. This adds that information to
    the warning that's logged on startup and to the devref doc on upgrades
    so people know that cells is still a special kitten that must be treated
    differently.

    Related-Bug: #1479181

    Change-Id: Idd57f8daa308543a1733092f427e41b1a205b1d1