Hello

Trying to re-run a Queens DPDK all-in-one using devstack which I built in August and hitting issues.

The local.conf is identical between the two machines except I had to take the “stable/queens” off the end of the “networking-ovs-dpdk” plugin line as that no longer appears to work.

The installation seems to proceed until it gets to setting the ip mtu on br-ex.

I’m not using br-ex.  I’ve declared OVS bridge mappings in the local.conf:

#Dual socket platform with 16GB RAM,3072*2048kB hugepages leaves ~4G for the system.

OVS_NUM_HUGEPAGES=3072

#Dual socket platform with 64GB RAM,14336*2048kB hugepages leaves ~6G for the system.

#OVS_NUM_HUGEPAGES=14336

OVS_DATAPATH_TYPE=netdev

OVS_LOG_DIR=/opt/stack/logs

#OVS_DPDK_PORT_MAPPINGS=p1p1:br-dpdk1,p1p2:br-dpdk2,p2p1:br-dpdk3,p2p2:br-dpdk4

OVS_DPDK_PORT_MAPPINGS=p6p1:br-dpdk1,p6p2:br-dpdk2

#OVS_BRIDGE_MAPPINGS=physnet1:br-dpdk1,physnet2:br-dpdk2,physnet3:br-dpdk3,physnet4:br-dpdk4

OVS_BRIDGE_MAPPINGS=physnet1:br-dpdk1,physnet2:br-dpdk2

[[post-config|$NOVA_CONF]]

[DEFAULT]

firewall_driver=nova.virt.firewall.NoopFirewallDriver

scheduler_default_filters=RamFilter,ComputeFilter,AvailabilityZoneFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,PciPassthroughFilter

[[post-config|/etc/neutron/plugins/ml2/ml2_conf.ini]]

[OVS]

datapath_type=netdev

[ml2_type_flat]

#flat_networks=physnet1,physnet2,physnet3,physnet4

flat_networks=physnet1,physnet2

I cannot stress again how identical these systems are – same hardware, same base OS install (CentOS 7.5).   I was (maybe erroneously!) thinking that if I had it devstack working on one system, having an identical system would be a piece of cake to install.

This is the installation error:

+lib/neutron_plugins/ovs_base:_neutron_ovs_base_add_bridge:21  local bridge=br-ex

+lib/neutron_plugins/ovs_base:_neutron_ovs_base_add_bridge:22  local 'addbr_cmd=sudo ovs-vsctl -- --may-exist add-br br-ex'

+lib/neutron_plugins/ovs_base:_neutron_ovs_base_add_bridge:24  '[' netdev '!=' system ']'

+lib/neutron_plugins/ovs_base:_neutron_ovs_base_add_bridge:25  addbr_cmd='sudo ovs-vsctl -- --may-exist add-br br-ex -- set Bridge br-ex datapath_type=netdev'

+lib/neutron_plugins/ovs_base:_neutron_ovs_base_add_bridge:28  sudo ovs-vsctl -- --may-exist add-br br-ex -- set Bridge br-ex datapath_type=netdev

+lib/neutron_plugins/ovs_base:_neutron_ovs_base_add_public_bridge:119  set_mtu br-ex 1500

+functions:set_mtu:750                     local dev=br-ex

+functions:set_mtu:751                     local mtu=1500

+functions:set_mtu:752                     sudo ip link set mtu 1500 dev br-ex

Cannot find device "br-ex"

+functions:set_mtu:1                       exit_trap

+./stack.sh:exit_trap:522                  local r=1

++./stack.sh:exit_trap:523                  jobs -p

+./stack.sh:exit_trap:523                  jobs=

+./stack.sh:exit_trap:526                  [[ -n '' ]]

+./stack.sh:exit_trap:532                  '[' -f /tmp/tmp.Dzbqzlk2fs ']'

+./stack.sh:exit_trap:533                  rm /tmp/tmp.Dzbqzlk2fs

+./stack.sh:exit_trap:537                  kill_spinner

+./stack.sh:kill_spinner:432               '[' '!' -z '' ']'

+./stack.sh:exit_trap:539                  [[ 1 -ne 0 ]]

+./stack.sh:exit_trap:540                  echo 'Error on exit'

Error on exit

+./stack.sh:exit_trap:542                  type -p generate-subunit

+./stack.sh:exit_trap:543                  generate-subunit 1545230781 1747 fail

+./stack.sh:exit_trap:545                  [[ -z /opt/stack/logs/screen ]]

+./stack.sh:exit_trap:548                  /home/stack/devstack/tools/worlddump.py -d /opt/stack/logs/screen

Can someone explain what is going on here please?

Thanks

David