[ClusterLabs] [corosync] Master branch

Christine Caulfield ccaulfie at redhat.com
Tue Oct 11 06:42:33 EDT 2016

I've just committed a bit patch to the master branch of corosync - it is
now all very experimental, and existing pull requests against master
might need to be checked. This starts the work on what will hopefully
become corosync 3.0

The commit is to make Kronosnet the new, default, transport for
corosync. It might take a while to get this fully stabilised but I've
been running it myself for a while now and it seems pretty reliable.

Here are the commit notes:

    totem: Add Kronosnet transport.

    This is a big update that removes RRP & MRP from the codebase
    and makes knet the default transport for corosync. UDP & UDPU
    are still (currently) supported but are deprecated. Also crypto
    and mutiple interfaces are only supported over knet.

    To compile this codebase you will need to install libknet from

    The corosync.conf(5) man page has been updated with info on the new
    options. Older config files should still work but many options
    have changed because of the knet implementation so configs should
    be checked carefully. In particular any cluster using using RRP
    over UDP or UDPU will not start as RRP is no longer present. If you
    need multiple interface support then you should be using the knet

    Knet brings many benefits to the corosync codebase, it provides support
    for more interfaces than RRP (up to 8), will be more reliable in the
    of network outages and allows dynamic reconfiguration of interfaces.
    It also fixes the ifup/ifdown and binding problems that have
    plagued corosync/openais from day 1

    Signed-off-by: Christine Caulfield <ccaulfie at redhat.com>


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