CRIU is preserving ifindexes of net devices after restoration, but current Open vSwitch API are not capable to do that. So we need to modify it, because - Restoring net devices with random ifindex will lead to some excessive work to restore master relationship. - OVS device taking another link ifindex will likely cause some problems and may snowball previous point. - Although OVS daemon is not supported yet, it is holding some tables which have ifindex.
Also I found a bug within OVS module - if for some reason netdevice_register fails, OVS gracefully kills kernel. Luckily there are some patches to fix that. Andrey Zhadchenko (1): net: openvswitch: add possibility to specify ifindex of new links Hillf Danton (1): net: openvswitch: free vport unless register_netdevice() succeeds Taehee Yoo (1): net: openvswitch: do not free vport if register_netdevice() is failed. net/openvswitch/datapath.c | 16 ++++++++++++++-- net/openvswitch/vport-internal_dev.c | 14 +++++++++----- net/openvswitch/vport.h | 2 ++ 3 files changed, 25 insertions(+), 7 deletions(-) -- 1.8.3.1 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
