[PKG-Openstack-devel] mininet requires missing ovs-controller

[Santiago R.R.]

Control: tags -1 + patch fixed-upstream

On Fri, 10 Nov 2017 12:15:39 +0100 "Santiago R.R." <santiagorr at riseup.net> wrote:
…
> mn tries to run ovs-controller, which has been renamed to
> /usr/bin/ovs-testcontroller according to
> https://github.com/openvswitch/ovs/blob/9a180f2c002adf73951e0ee9990c44e5e5cd4a0f/NEWS#L600

ovs-controller -> test-controller -> ovs-testcontroller

https://github.com/openvswitch/ovs/blob/9a180f2c002adf73951e0ee9990c44e5e5cd4a0f/NEWS#L471

> mininet should Depends or Recomends on openvswitch-testcontroller

It seems I am wrong about this.

> 
> $ sudo mn --topo tree,depth=2,fanout=3
> *** Creating network
> *** Adding controller
> *** Adding hosts:
> h1 h2 h3 h4 h5 h6 h7 h8 h9
> *** Adding switches:
> s1 s2 s3 s4
> *** Adding links:
> (s1, s2) (s1, s3) (s1, s4) (s2, h1) (s2, h2) (s2, h3) (s3, h4) (s3, h5) (s3, h6) (s4, h7) (s4, h8) (s4, h9)
> *** Configuring hosts
> h1 h2 h3 h4 h5 h6 h7 h8 h9
> *** Starting controller
> c0 Cannot find required executable ovs-controller.
> Please make sure that it is installed and available in your $PATH:
> (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin)
…
> Versions of packages mininet depends on:
> ii  cgroup-bin            0.41-8
> ii  iperf                 2.0.10+dfsg1-1
> ii  libc6                 2.24-17
> ii  net-tools             1.60+git20161116.90da8a0-1
> ii  openvswitch-switch    2.8.1+dfsg1-3
> ii  python                2.7.14-1
> ii  python-pkg-resources  36.6.0-1
> ii  socat                 1.7.3.2-1
> ii  telnet                0.17-41

(I am new on this, and I am trying to understand how mininet relies on
openvswitch, so sorry if what I say doesn't make any sense.)

Actually, the issue doesn't happen in stretch or buster, or more
precisely, with openvswitch-switch 2.6.2~pre+git20161223-3.

As far as I understand, the reason why mininet complains against
openvswtich is because openvswith-common includes
/usr/bin/ovs-testcontroller since 2.8.1+dfsg1-1. Binary that was part of
openvswitch-testcontroller before. Installing -testcontroller in stretch
or buster makes that mininet also complains.

And it also seems that it was already fixed by upstream in commit
57abd9baef8b3ec3ce3c349829b37022cfef724a. Patch attached to this mail.

Cheers,

  -- Santiago

P.S. Question for openvswitch maintainers: does it make sense to include
back /usr/bin/ovs-testcontroller in the -testcontroller package?
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