• David Johnson's avatar
    Add the ability to load images on virtnodes. For now, we just overload · c6c57bc9
    David Johnson authored
    the tb-set-node-os command with a second optional argument; if that is
    present, the first arg is the child OS and the second is the parent OS.
    We add some new features in ptopgen (OS-parentOSname-childOSname) based
    off a new table that maps which child OSes can run on which parents, and
    the right desires get added to match.  We setup the reloads in os_setup
    along with the parents.  Also needed a new opmode, RELOAD-PCVM, to handle
    all this.
    
    For now, users only have to specify that their images can run on pcvms, a
    special hack for which type the images can run on.  This makes sense in
    general since there is no point conditionalizing childOS loading on
    hardware type at the moment, but rather on parentOS.  Hopefully this stuff
    wiill mostly work on shared nodes too, although we'll have to be more
    aggressive on the client side garbage collecting old frisbee'd images for
    long-lived shared hosts.
    
    I only made these changes in libvtop, so assign_wrapper folks are left in
    the dark.
    
    Currently, the client side supports frisbee.  Only in openvz for now, and
    this probably breaks libvnode_xen.pm.  Also in here are some openvz
    improvements, like ability to sniff out which network is the public
    control net, and which is the fake virtual control net.
    c6c57bc9
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