Adding virtual devices to namespaces post-creation is not supported under RHEL

[Maru Newby]

Namespace-supporting agents (L3, DHCP and Debug) currently add existing virtual devices to namespaces, but planned support for namespaces in RHEL 6.5 will only allow creating virtual devices in namespaces. The agents can be updated to create devices in namespaces to support RHEL without changing functionality.

[Eugene Nikanorov (enikanorov)]

Does this affects LBaaS namespace agent (since it does the same as DHCP agent)?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/27395

[Maru Newby (maru)]

Eugene: Yes, this problem affects LBaaS. The proposed patch applies to the interface drivers that the agents share, and the devstack patch allows configuration (Q_OVS_USE_VETH <-> ovs_use_veth).

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/27395
Committed: http://github.com/openstack/quantum/commit/152f3cf112df09faf79e932da948c5045802b15d
Submitter: Jenkins
Branch: master

commit 152f3cf112df09faf79e932da948c5045802b15d
Author: Maru Newby <email address hidden>
Date: Tue Apr 2 22:43:37 2013 +0000

    Create veth peer in namespace.

     * Update veth pair creation to set the namespace of the peer
       device on creation rather than subsequently adding it to the
       namespace.
     * This change supports kernels with limited namespace support
       (e.g. RHEL 6.5) so long as ovs_use_veth is set to True.
     * Addresses bug 1171727

    Change-Id: I1885acc9934e7627bb9872703df7f5edf2980722

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/27396
Committed: http://github.com/openstack-dev/devstack/commit/d7150e9bbce54479028c5c744d5648ae530925ea
Submitter: Jenkins
Branch: master

commit d7150e9bbce54479028c5c744d5648ae530925ea
Author: Maru Newby <email address hidden>
Date: Tue Apr 23 06:16:11 2013 +0000

    Add configurable use of veths with Quantum+OVS.

     * This patch adds the ability to configure use of veths with
       OVS via the Q_OVS_USE_VETH variable. The use of veths with OVS
       is required to support namespaces on RHEL.
     * Supports bug 1171727

    Change-Id: I5f557d659684ead99a3e5e2b4df787699d9d3f05

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/grizzly
Review: https://review.openstack.org/28408

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/28408
Committed: http://github.com/openstack/quantum/commit/6b5c7132455a11a7a0252b8630295acc99b6f240
Submitter: Jenkins
Branch: stable/grizzly

commit 6b5c7132455a11a7a0252b8630295acc99b6f240
Author: Maru Newby <email address hidden>
Date: Tue Apr 2 22:43:37 2013 +0000

    Create veth peer in namespace.

     * Update veth pair creation to set the namespace of the peer
       device on creation rather than subsequently adding it to the
       namespace.
     * This change supports kernels with limited namespace support
       (e.g. RHEL 6.5) so long as ovs_use_veth is set to True.
     * Addresses bug 1171727

    Change-Id: I1885acc9934e7627bb9872703df7f5edf2980722