[Bug 1125611] Re: DKMS brcompat module circular dependency causes broken module

[James Page]

** Description changed:

  [Impact]
  brcompat module is broken
  
  [Test Case]
  sudo apt-get install openvswitch-datapath-dkms
  sudo apt-get install openvswitch-brcompat
- brcompat daemon will fail to start
- /var/log/syslog: brcompat: module license 'unspecified' taints kernel.
+ edit /etc/default/openvswitch-switch and enable BRCOMPAT=yes
+ sudo service openvswitch-switch restart
+ 
+ brcompat daemon will fail to start:
+ ovs-brcompatd: could not open brcompat socket.  Check "brcompat" kernel module.
+ 
+ /var/log/syslog:
+ brcompat: module license 'unspecified' taints kernel.
  
  [Regression Potential]
  Minimal; the additional cherry picked patch renames the brcompat.c file brcompat_main.c to avoid a circular dependency during DKMS build.
  
  [Original bug report]
  On Ubuntu 12.04.2 LTS, after an automatic upgrade from openvswitch 1.4.0-1ubuntu1.3 to openvswith 1.4.0-1ubuntu1.4 the brcompat support does not work any longer.
  
  The brcompat kernel module can be build, installed, and loaded, but
  openvswitch-brcompatd will not start with the error message: "ovs-
  brcompatd: could not open brcompat socket. Check "brcompat" kernel
  module."
  
  After a downgrade back to version 1.4.0-1ubuntu1.3 brcompat works again.
  I think this is essentially the same problem as described here:
  https://answers.launchpad.net/ubuntu/+source/openvswitch/+question/221334
  
  It might be unrelated, but after the upgrade "lsmod" does not list the
  "openvswitch" module as a dependency of the "brcompat" module. After
  downgrading, the dependency is shown again.

** Description changed:

  [Impact]
  brcompat module is broken
  
  [Test Case]
  sudo apt-get install openvswitch-datapath-dkms
  sudo apt-get install openvswitch-brcompat
  edit /etc/default/openvswitch-switch and enable BRCOMPAT=yes
  sudo service openvswitch-switch restart
  
  brcompat daemon will fail to start:
  ovs-brcompatd: could not open brcompat socket.  Check "brcompat" kernel module.
  
  /var/log/syslog:
  brcompat: module license 'unspecified' taints kernel.
+ 
+ Note that the 'force-reload-kmod' may be required after upgrading to
+ force the DKMS modules to be reloaded:
+ 
+ sudo service openvswitch-switch force-reload-kmod
  
  [Regression Potential]
  Minimal; the additional cherry picked patch renames the brcompat.c file brcompat_main.c to avoid a circular dependency during DKMS build.
  
  [Original bug report]
  On Ubuntu 12.04.2 LTS, after an automatic upgrade from openvswitch 1.4.0-1ubuntu1.3 to openvswith 1.4.0-1ubuntu1.4 the brcompat support does not work any longer.
  
  The brcompat kernel module can be build, installed, and loaded, but
  openvswitch-brcompatd will not start with the error message: "ovs-
  brcompatd: could not open brcompat socket. Check "brcompat" kernel
  module."
  
  After a downgrade back to version 1.4.0-1ubuntu1.3 brcompat works again.
  I think this is essentially the same problem as described here:
  https://answers.launchpad.net/ubuntu/+source/openvswitch/+question/221334
  
  It might be unrelated, but after the upgrade "lsmod" does not list the
  "openvswitch" module as a dependency of the "brcompat" module. After
  downgrading, the dependency is shown again.

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https://bugs.launchpad.net/bugs/1125611

Title:
  DKMS brcompat module circular dependency causes broken module

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