Here is the information:
1. from 'git log -1' running in /opt/stack/nova (I install openstack using devstack, all from the latest version from git)

commit 7b0d0fe0c11340fe13dffebe0e049f951011402b
Merge: f587a78 c56bbc6
Author: Jenkins <email address hidden>
Date:   Mon Sep 28 17:49:10 2015 +0000

    Merge "libvirt: Split out resize_image logic from create_image"

2. In 'n-cpu.log' from /opt/stack/logs

2015-09-30 04:41:38.157 DEBUG oslo_service.periodic_task [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Running periodic task ComputeManager.update_available_resource from (pid=16597) run_periodic_tasks /usr/local/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
2015-09-30 04:41:38.195 INFO nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Auditing locally available compute resources for node ubuntu
2015-09-30 04:41:38.283 DEBUG oslo_concurrency.processutils [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Running cmd (subprocess): env LC_ALL=C LANG=C qemu-img info /opt/stack/data/nova/instances/9ebc4358-a052-40ca-97f2-75f8686fc73f/disk from (pid=16597) execute /usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:230
2015-09-30 04:41:38.314 DEBUG oslo_concurrency.processutils [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] CMD "env LC_ALL=C LANG=C qemu-img info /opt/stack/data/nova/instances/9ebc4358-a052-40ca-97f2-75f8686fc73f/disk" returned: 0 in 0.030s from (pid=16597) execute /usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:260
2015-09-30 04:41:38.315 DEBUG oslo_concurrency.processutils [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Running cmd (subprocess): env LC_ALL=C LANG=C qemu-img info /opt/stack/data/nova/instances/9ebc4358-a052-40ca-97f2-75f8686fc73f/disk from (pid=16597) execute /usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:230
2015-09-30 04:41:38.348 DEBUG oslo_concurrency.processutils [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] CMD "env LC_ALL=C LANG=C qemu-img info /opt/stack/data/nova/instances/9ebc4358-a052-40ca-97f2-75f8686fc73f/disk" returned: 0 in 0.032s from (pid=16597) execute /usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:260
2015-09-30 04:41:38.538 DEBUG nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Hypervisor: free VCPUs: 7 from (pid=16597) _report_hypervisor_resource_view /opt/stack/nova/nova/compute/resource_tracker.py:580
2015-09-30 04:41:38.539 DEBUG nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Hypervisor: assignable PCI devices: [{"dev_id": "pci_0000_00_00_0", "product_id": "1237", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_1237", "address": "0000:00:00.0"}, {"dev_id": "pci_0000_00_01_0", "product_id": "7000", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_7000", "address": "0000:00:01.0"}, {"dev_id": "pci_0000_00_01_1", "product_id": "7111", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_7111", "address": "0000:00:01.1"}, {"dev_id": "pci_0000_00_02_0", "product_id": "beef", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "80ee", "label": "label_80ee_beef", "address": "0000:00:02.0"}, {"dev_id": "pci_0000_00_03_0", "product_id": "100e", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_100e", "address": "0000:00:03.0"}, {"dev_id": "pci_0000_00_04_0", "product_id": "cafe", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "80ee", "label": "label_80ee_cafe", "address": "0000:00:04.0"}, {"dev_id": "pci_0000_00_05_0", "product_id": "2415", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_2415", "address": "0000:00:05.0"}, {"dev_id": "pci_0000_00_06_0", "product_id": "003f", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "106b", "label": "label_106b_003f", "address": "0000:00:06.0"}, {"dev_id": "pci_0000_00_07_0", "product_id": "7113", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_7113", "address": "0000:00:07.0"}, {"dev_id": "pci_0000_00_08_0", "product_id": "100e", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_100e", "address": "0000:00:08.0"}, {"dev_id": "pci_0000_00_0d_0", "product_id": "2829", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_2829", "address": "0000:00:0d.0"}] from (pid=16597) _report_hypervisor_resource_view /opt/stack/nova/nova/compute/resource_tracker.py:588
2015-09-30 04:41:38.539 DEBUG nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Hypervisor/Node resource view: name=ubuntu free_ram=2180MB free_disk=113GB free_vcpus=7 pci_devices=[{"dev_id": "pci_0000_00_00_0", "product_id": "1237", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_1237", "address": "0000:00:00.0"}, {"dev_id": "pci_0000_00_01_0", "product_id": "7000", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_7000", "address": "0000:00:01.0"}, {"dev_id": "pci_0000_00_01_1", "product_id": "7111", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_7111", "address": "0000:00:01.1"}, {"dev_id": "pci_0000_00_02_0", "product_id": "beef", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "80ee", "label": "label_80ee_beef", "address": "0000:00:02.0"}, {"dev_id": "pci_0000_00_03_0", "product_id": "100e", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_100e", "address": "0000:00:03.0"}, {"dev_id": "pci_0000_00_04_0", "product_id": "cafe", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "80ee", "label": "label_80ee_cafe", "address": "0000:00:04.0"}, {"dev_id": "pci_0000_00_05_0", "product_id": "2415", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_2415", "address": "0000:00:05.0"}, {"dev_id": "pci_0000_00_06_0", "product_id": "003f", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "106b", "label": "label_106b_003f", "address": "0000:00:06.0"}, {"dev_id": "pci_0000_00_07_0", "product_id": "7113", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_7113", "address": "0000:00:07.0"}, {"dev_id": "pci_0000_00_08_0", "product_id": "100e", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_100e", "address": "0000:00:08.0"}, {"dev_id": "pci_0000_00_0d_0", "product_id": "2829", "dev_type": "type-PCI", "numa_node": null, "vendor_id": "8086", "label": "label_8086_2829", "address": "0000:00:0d.0"}] from (pid=16597) _report_hypervisor_resource_view /opt/stack/nova/nova/compute/resource_tracker.py:602
2015-09-30 04:41:38.540 DEBUG oslo_concurrency.lockutils [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Lock "compute_resources" acquired by "nova.compute.resource_tracker._update_available_resource" :: waited 0.000s from (pid=16597) inner /usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:253
2015-09-30 04:41:38.654 INFO nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Total usable vcpus: 8, total allocated vcpus: 1
2015-09-30 04:41:38.655 INFO nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Final resource view: name=ubuntu phys_ram=7983MB used_ram=640MB phys_disk=117GB used_disk=0GB total_vcpus=8 used_vcpus=1 pci_stats=None
2015-09-30 04:41:38.708 INFO nova.compute.resource_tracker [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Compute_service record updated for ubuntu:ubuntu
2015-09-30 04:41:38.709 DEBUG oslo_concurrency.lockutils [req-ce40856e-e042-41b3-8c5f-7b9030db99a5 None None] Lock "compute_resources" released by "nova.compute.resource_tracker._update_available_resource" :: held 0.169s from (pid=16597) inner /usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:265