ovn-ctl: unable to source ovs-lib

[positiveEV]

Describe the bug

To manage ovn components I decided to create systemd.services based on the ones provided by ovn-central and ovn-host Debian packages, since the ovn does not include any services.
This services use ovn-ctl script to manage services. Line 22 ovn-ctl tries to source ovs-lib at line 22 but it is not able to find it because ovs-lib comes from the openvswitch package

Steps To Reproduce

Simply executing ovn-ctl with whatever valid options

"${pkgs.ovn}/share/ovn/scripts/ovn-ctl start_controller --ovn-manage-ovsdb=no --no-monitor"
root@MYHOST /# nix/store/y3ci49p62gpi34xjla3q8x3pwdlrj14v-ovn-24.09.1/share/ovn/scripts/ovn-ctl start_controller --ovn-manage-ovsdb=no --no-monitor
nix/store/y3ci49p62gpi34xjla3q8x3pwdlrj14v-ovn-24.09.1/share/ovn/scripts/ovn-ctl: line 22: nix/store/y3ci49p62gpi34xjla3q8x3pwdlrj14v-ovn-24.09.1/share/openvswitch/scripts/ovs-lib: No such file or directory

Expected behavior

ovn-ctl should be able to source "${pkgs.openvswitch}/share/openvvswitch/scripts/ovs-lib

Additional context

Two of the 5 systemd services I declared. This is only for non-cluster usage so I did not bother with args

  systemd.services.ovn-central = {
    enable = true;
    description = "Open Virtual Network central components";
    after = [ "network.target" ];
    wants = [ "ovn-northd.service" "ovn-ovsdb-server-sb.service" "ovn-ovsdb-server-nb.service" ];
    unitConfig = {
    };
    serviceConfig = {
      Type = "oneshot";
      ExecStart = "/run/current-system/sw/bin/true";
      ExecStop = "/run/current-system/sw/bin/true";
      RemainAfterExit= "yes";
    };
    wantedBy = [ "multi-user.target" ];
  };

  systemd.services.ovn-northd = {
    enable = true;
    description = "Open Virtual Network central control daemon";
    after = [ "network.target" "ovn-nb-ovsdb.service" "ovn-sb-ovsdb.service" ];
    partOf= [ "ovn-central.service" ];
    unitConfig = {
      DefaultDependencies = "no";
    };
    serviceConfig = {
      Type = "forking";
      ExecStart = "${pkgs.ovn}/share/ovn/scripts/ovn-ctl start_northd --ovn-manage-ovsdb=no --no-monitor";
      ExecStop = "${pkgs.ovn}/share/ovn/scripts/ovn-ctl stop_northd --no-monitor";
      Restart = "on-failure";
      LimitNOFILE = "65535";
      TimeoutStopSec = "15";
    };
  };

Metadata

 - system: `"x86_64-linux"`
 - host os: `Linux 6.6.64, NixOS, 24.11 (Vicuna), 24.11.711150.314e12ba369c`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.24.10`
 - channels(root): `"nixos-24.11"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

@adamcstephens I saw that your are also active on the incus project. Since I am trying to get ovn working to use it with incus, may be you could give me a better way to get ovn running for Incus ?

[adamcstephens]

Hi, this PR seems to fix that issue #365779

You may have guessed from that behaivor, but nobody is probably using this package. I created it hoping one day we would get full support, but it's a non-trivial module to build that nobody has built yet. I'd be open to reviewing PRs, but I currently have no plans to do more than keep the package alive.

[positiveEV]

Thank you for the fix and the info. I will try to make it work on a standalone install if it is not too hard. Otherwise I will probably try Opensuse microos.

[adamcstephens]

I'm going to mark this closed since the reported error is fixed.