Estamos tentando instalar o DPDK OVS no topo do openstack juno no kernel 14.04 do Ubuntu 14.04 em um único servidor. Estamos nos referindo aos seguintes passos para executar o mesmo.
Durante a execução, estamos obtendo alguns problemas com o serviço ovs-vswitchd, já que ele é interrompido durante a inicialização.
A saída do comando ./ovs-vswitchd --dpdk -c 0x0FF8 -n 4 --socket-mem 1024,0 -- --log-file=/var/log/openvswitch/ovs-vswitchd.log --pidfile=/var/run/op penvswitch/ovs-vswitchd.pid é como abaixo
AL: PCI device 0000:04:00.0 on NUMA socket 0
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: Not managed by a supported kernel driver, skipped
EAL: PCI device 0000:04:00.1 on NUMA socket 0
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: Not managed by a supported kernel driver, skipped
Zone 0: name:<MALLOC_S0_HEAP_0>, phys:0x30400000, len:0xb00000, virt:0x7f2d1ba00000, socket_id:0, flags:0
Zone 1: name:<RG_MP_log_history>, phys:0x35400000, len:0x2080, virt:0x7f2d1b600000, socket_id:0, flags:0
Zone 2: name:<MP_log_history>, phys:0xe3ce00000, len:0x28a0c0, virt:0x7f2d09400000, socket_id:0, flags:0
2015-11-24T13:14:12Z|00002|vlog|INFO|opened log file /var/log/openvswitch/ovs-vswitchd.log
2015-11-24T13:14:12Z|00003|ovs_numa|INFO|Discovered 24 CPU cores on NUMA node 0
2015-11-24T13:14:12Z|00004|ovs_numa|INFO|Discovered 24 CPU cores on NUMA node 1
2015-11-24T13:14:12Z|00005|ovs_numa|INFO|Discovered 2 NUMA nodes and 48 CPU cores
2015-11-24T13:14:12Z|00006|reconnect|INFO|unix:/var/run/openvswitch/db.sock: connecting...
2015-11-24T13:14:12Z|00007|reconnect|INFO|unix:/var/run/openvswitch/db.sock: connected
2015-11-24T13:14:12Z|00008|ofproto_dpif|INFO|netdev@ovs-netdev: Datapath supports recirculation
2015-11-24T13:14:12Z|00009|ofproto_dpif|INFO|netdev@ovs-netdev: MPLS label stack length probed as 3
2015-11-24T13:14:12Z|00010|ofproto_dpif|INFO|netdev@ovs-netdev: Datapath supports unique flow ids
2015-11-24T13:14:12Z|00011|dpif_netlink|ERR|Generic Netlink family 'ovs_datapath' does not exist. The Open vSwitch kernel module is probably not loaded.
2015-11-24T13:14:12Z|00012|dpif|WARN|failed to enumerate system datapaths: No such file or directory
2015-11-24T13:14:12Z|00013|dpif|WARN|failed to create datapath ovs-system: No such file or directory
2015-11-24T13:14:12Z|00014|ofproto_dpif|ERR|failed to open datapath of type system: No such file or directory
2015-11-24T13:14:12Z|00015|ofproto|ERR|failed to open datapath br-eth1: No such file or directory
2015-11-24T13:14:12Z|00016|bridge|ERR|failed to create bridge br-eth1: No such file or directory
2015-11-24T13:14:12Z|00017|bridge|INFO|bridge br-ex: added interface br-ex on port 65534
2015-11-24T13:14:12Z|00018|bridge|INFO|bridge br-int: added interface tapb6327a6f-e3 on port 1
2015-11-24T13:14:12Z|00019|bridge|INFO|bridge br-int: added interface br-int on port 65534
2015-11-24T13:14:12Z|00020|bridge|INFO|bridge br-ex: using datapath ID 0000be3137b62448
2015-11-24T13:14:12Z|00021|connmgr|INFO|br-ex: added service controller "punix:/var/run/openvswitch/br-ex.mgmt"
2015-11-24T13:14:12Z|00022|bridge|INFO|bridge br-int: using datapath ID 000016d2ab534949
2015-11-24T13:14:12Z|00023|connmgr|INFO|br-int: added service controller "punix:/var/run/openvswitch/br-int.mgmt"
2015-11-24T13:14:12Z|00024|bridge|INFO|ovs-vswitchd (Open vSwitch) 2.4.90
2015-11-24T13:14:19Z|00025|memory|INFO|25200 kB peak resident set size after 10.3 seconds
2015-11-24T13:14:19Z|00026|memory|INFO|handlers:17 ports:3 revalidators:7 rules:9
echo 0 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages , mas não conseguimos. Você pode, por favor, nos ajudar a conseguir as coisas se estivermos perdendo alguma coisa e fazendo com que o ovs-vswitchd fique preso ao começar?
Além disso, quando criamos vm em openstack com DPDK OVS, as interfaces do tipo dpdkvhost-user são criadas automaticamente. Se esta interfaces estão sendo mapeadas com a ponte br-int regular ao invés da ponte brd DPDK, então isto significa que nós habilitamos o DPDK com o datapath netdev?
Seu problema está por perto "Não gerenciado por um driver de kernel suportado, ignorado".
Você tem que cancelar a atribuição dos dispositivos dos drivers do kernel para, por exemplo drivers uio para que o DPDK possa usá-los.
Para o Ubuntu 16.04, o seguinte irá ajudá-lo: link .
Manualmente isso pode ser feito com dpdk_nic_bind .
Do --help output: