OVS-DPDK failed to boot more than 1 instance on OVS-DPDK setup: os_mem_prealloc: Insufficient free host memory pages available to allocate guest RAM

[Eran Kuris]

vm failed

Description of problem:
On OVS-DPDK setup 1 controller & 1 compute with data tenant/network type vlan I failed to boot instances. When create 1 VM it success. From the second vm all vm's failed .When I created multiplae VM's - Instance Count 4 for example
few of the instances will boot as active and few will be failed.
When using DPDK we should boot vm with flavor that use hugepages - :
$ nova flavor-create m1.medium_dpdk 6 2048 20 2
$ nova flavor-key m1.medium_dpdk set "hw:mem_page_size=large"
attached all log
nic type: Ethernet controller: Intel Corporation Ethernet 10G 2P X520 Adapter
driver: ixgbe
Version-Release number of selected component (if applicable):
[root@puma48 ~]# rpm -qa |grep neutro
openstack-neutron-openvswitch-7.0.1-6.el7ost.noarch
python-neutron-7.0.1-6.el7ost.noarch
openstack-neutron-common-7.0.1-6.el7ost.noarch
python-neutronclient-3.1.0-1.el7ost.noarch
openstack-neutron-7.0.1-6.el7ost.noarch
[root@puma48 ~]# rpm -qa |grep dpd
openvswitch-dpdk-2.4.0-0.10346.git97bab959.2.el7.x86_64
dpdk-2.1.0-5.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1.https://docs.google.com/document/d/1K_ku6_08ooq46dFLiE7fAJ0ByFdPCb0W_q6kKqF3Y0o/edit
2.
3.

Actual results:

Expected results:

Additional info:

[Matt Riedemann (mriedem)]

What version of nova is this? Mitaka? Liberty?

The failure is coming from libvirt/qemu:

os_mem_prealloc: Insufficient free host memory pages available to allocate guest RAM

[Eran Kuris (ekuris)]

Liberty

[Matt Riedemann (mriedem)]

Looks like this is result of red hat bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1300680

So I'm going to duplicate it against bug 1543149.

[Eran Kuris (ekuris)]

yes it is duplicate bug with this bugzila

[Martin Lopes (martinlopes)]

Note: the google doc guide mentioned in the description has been published here:

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/10/html-single/network_functions_virtualization_configuration_guide/