Nothing out of the ordinary. The cluster network would operate at its speed
and the public would do the same.

The traffic on the cluster network is all communication between OSDs. No
other ceph daemon other than OSDs use that network.  All communication to
the OSDs from any other daemon or service happens on the public network.

For a write on a replicated pool with size 3 the client writes to the
primary osd across the public network and then the primary osd sends the
other 2 copies across the cluster network to the secondary OSDs. So for
writes the public network uses N bandwidth while the cluster use 2N
bandwidth for the replica copies. Seeing as the write isn't acknowledged
until all 3 copies are written it makes no sense to have a faster public
network.

I would probably suggest just ditching the separate cluster network and
only have the 1 public network for both types of traffic. If you want them
to be isolated, use the faster network as the cluster network.

On Wed, May 9, 2018, 4:46 PM Gandalf Corvotempesta <
gandalf.corvotempe...@gmail.com> wrote:

> As subject, what would happen ?
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