issues creating a second vm with numa affinity
Dear Openstack user community,
I have a compute node with 2 numa nodes and I would like to create 2 vms, each one using a different numa node through numa affinity with cpu, memory and nvme pci devices.
pci passthrough whitelist [root@zeus-53 ~]# tail /etc/kolla/nova-compute/nova.conf [notifications]
[filter_scheduler] enabled_filters = enabled_filters = RetryFilter, AvailabilityZoneFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter, PciPassthroughFilter available_filters = nova.scheduler.filters.all_filters
[pci] passthrough_whitelist = [ {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"}, {"address":"0000:09:00.0"}, {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} ] alias = { "vendor_id":"8086", "product_id":"0953", "device_type":"type-PCI", "name":"nvme"}
Openstack flavor openstack flavor create --public xlarge.numa.perf.test --ram 200000 --disk 700 --vcpus 20 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
The first vm is successfully created openstack server create --network hpc --flavor xlarge.numa.perf.test --image centos7.6-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-1
However the second vm fails openstack server create --network hpc --flavor xlarge.numa.perf --image centos7.6-kudu-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-4
Errors in nova compute node 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [req-b5a25c73-8c7d-466c-8128-71f29e7ae8aa 91e83343e9834c8ba0172ff369c8acac b91520cff5bd45c59a8de07c38641582 - default default] [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] Instance failed to spawn: libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] Traceback (most recent call last): 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2369, in _build_resources 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] yield resources 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2133, in _build_and_run_instance 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] block_device_info=block_device_info) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3142, in spawn 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] destroy_disks_on_failure=True) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5705, in _create_domain_and_network 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] destroy_disks_on_failure) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__ 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] self.force_reraise() 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] six.reraise(self.type_, self.value, self.tb) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5674, in _create_domain_and_network 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] post_xml_callback=post_xml_callback) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5608, in _create_domain 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] guest.launch(pause=pause) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] self._encoded_xml, errors='ignore') 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__ 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] self.force_reraise() 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] six.reraise(self.type_, self.value, self.tb) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] return self._domain.createWithFlags(flags) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] result = proxy_call(self._autowrap, f, *args, **kwargs) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = execute(f, *args, **kwargs) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] six.reraise(c, e, tb) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = meth(*args, **kwargs) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1110, in createWithFlags 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self) 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory 2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae]
Numa cell/node 1 (the one assigned on kudu-4) has enough cpu, memory, pci devices and disk capacity to fit this vm. NOTE: below is the information relevant I could think of that shows resources available after creating the second vm.
[root@zeus-53 ~]# numactl -H available: 2 nodes (0-1) node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41 node 0 size: 262029 MB node 0 free: 52787 MB node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55 node 1 size: 262144 MB node 1 free: 250624 MB node distances: node 0 1 0: 10 21 1: 21 10 NOTE: this is to show that numa node/cell 1 has enough resources available (also nova-compute logs shows that kudu-4 is assigned to cell 1)
[root@zeus-53 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/md127 3.7T 9.1G 3.7T 1% / ... NOTE: vm disk files goes to root (/) partition
[root@zeus-53 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 59.6G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 16G 0 part [SWAP] loop0 7:0 0 100G 0 loop └─docker-9:127-6979358884-pool 253:0 0 100G 0 dm ├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm ├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm ├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm ├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm ├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm ├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm ├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm ├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm ├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm ├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm └─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm loop1 7:1 0 2G 0 loop └─docker-9:127-6979358884-pool 253:0 0 100G 0 dm ├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm ├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm ├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm ├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm ├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm ├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm ├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm ├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm ├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm ├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm └─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm nvme0n1 259:8 0 1.8T 0 disk └─nvme0n1p1 259:9 0 1.8T 0 part └─md127 9:127 0 3.7T 0 raid0 / nvme1n1 259:6 0 1.8T 0 disk └─nvme1n1p1 259:7 0 1.8T 0 part └─md127 9:127 0 3.7T 0 raid0 / nvme2n1 259:2 0 1.8T 0 disk nvme3n1 259:1 0 1.8T 0 disk nvme4n1 259:0 0 1.8T 0 disk nvme5n1 259:3 0 1.8T 0 disk NOTE: this is to show that there are 4 nvme disks (nvme2n1, nvme3n1, nvme4n1, nvme5n1) available for the second vm
What "emu-kvm: kvm_init_vcpu failed: Cannot allocate memory" means in this context?
Thank you very much NOTICE Please consider the environment before printing this email. This message and any attachments are intended for the addressee named and may contain legally privileged/confidential/copyright information. If you are not the intended recipient, you should not read, use, disclose, copy or distribute this communication. If you have received this message in error please notify us at once by return email and then delete both messages. We accept no liability for the distribution of viruses or similar in electronic communications. This notice should not be removed.
did you try to removing "hw:numa_nodes=1" ?
On Tue, Oct 1, 2019 at 2:16 PM Manuel Sopena Ballesteros manuel.sb@garvan.org.au wrote:
Dear Openstack user community,
I have a compute node with 2 numa nodes and I would like to create 2 vms, each one using a different numa node through numa affinity with cpu, memory and nvme pci devices.
pci passthrough whitelist
[root@zeus-53 ~]# tail /etc/kolla/nova-compute/nova.conf
[notifications]
[filter_scheduler]
enabled_filters = enabled_filters = RetryFilter, AvailabilityZoneFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter, PciPassthroughFilter
available_filters = nova.scheduler.filters.all_filters
[pci]
passthrough_whitelist = [ {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"}, {"address":"0000:09:00.0"}, {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} ]
alias = { "vendor_id":"8086", "product_id":"0953", "device_type":"type-PCI", "name":"nvme"}
Openstack flavor
openstack flavor create --public xlarge.numa.perf.test --ram 200000 --disk 700 --vcpus 20 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
The first vm is successfully created
openstack server create --network hpc --flavor xlarge.numa.perf.test --image centos7.6-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-1
However the second vm fails
openstack server create --network hpc --flavor xlarge.numa.perf --image centos7.6-kudu-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-4
Errors in nova compute node
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [req-b5a25c73-8c7d-466c-8128-71f29e7ae8aa 91e83343e9834c8ba0172ff369c8acac b91520cff5bd45c59a8de07c38641582 - default default] [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] Instance failed to spawn: libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] Traceback (most recent call last):
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2369, in _build_resources
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] yield resources
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2133, in _build_and_run_instance
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] block_device_info=block_device_info)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3142, in spawn
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] destroy_disks_on_failure=True)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5705, in _create_domain_and_network
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] destroy_disks_on_failure)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] self.force_reraise()
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] six.reraise(self.type_, self.value, self.tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5674, in _create_domain_and_network
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] post_xml_callback=post_xml_callback)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5608, in _create_domain
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] guest.launch(pause=pause)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] self._encoded_xml, errors='ignore')
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] self.force_reraise()
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] six.reraise(self.type_, self.value, self.tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] return self._domain.createWithFlags(flags)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] result = proxy_call(self._autowrap, f, *args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = execute(f, *args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] six.reraise(c, e, tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = meth(*args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1110, in createWithFlags
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae]
Numa cell/node 1 (the one assigned on kudu-4) has enough cpu, memory, pci devices and disk capacity to fit this vm. NOTE: below is the information relevant I could think of that shows resources available after creating the second vm.
[root@zeus-53 ~]# numactl -H
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 0 size: 262029 MB
node 0 free: 52787 MB
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
node 1 size: 262144 MB
node 1 free: 250624 MB
node distances:
node 0 1
0: 10 21
1: 21 10
NOTE: this is to show that numa node/cell 1 has enough resources available (also nova-compute logs shows that kudu-4 is assigned to cell 1)
[root@zeus-53 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md127 3.7T 9.1G 3.7T 1% /
...
NOTE: vm disk files goes to root (/) partition
[root@zeus-53 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 59.6G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 16G 0 part [SWAP]
loop0 7:0 0 100G 0 loop
└─docker-9:127-6979358884-pool 253:0 0 100G 0 dm
├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm
├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm
├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm
├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm
├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm
├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm
├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm
├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm
├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm
├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm
└─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm
loop1 7:1 0 2G 0 loop
└─docker-9:127-6979358884-pool 253:0 0 100G 0 dm
├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm
├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm
├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm
├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm
├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm
├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm
├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm
├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm
├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm
├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm
└─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm
nvme0n1 259:8 0 1.8T 0 disk
└─nvme0n1p1 259:9 0 1.8T 0 part
└─md127 9:127 0 3.7T 0 raid0 /
nvme1n1 259:6 0 1.8T 0 disk
└─nvme1n1p1 259:7 0 1.8T 0 part
└─md127 9:127 0 3.7T 0 raid0 /
nvme2n1 259:2 0 1.8T 0 disk
nvme3n1 259:1 0 1.8T 0 disk
nvme4n1 259:0 0 1.8T 0 disk
nvme5n1 259:3 0 1.8T 0 disk
NOTE: this is to show that there are 4 nvme disks (nvme2n1, nvme3n1, nvme4n1, nvme5n1) available for the second vm
What "emu-kvm: kvm_init_vcpu failed: Cannot allocate memory" means in this context?
Thank you very much
NOTICE Please consider the environment before printing this email. This message and any attachments are intended for the addressee named and may contain legally privileged/confidential/copyright information. If you are not the intended recipient, you should not read, use, disclose, copy or distribute this communication. If you have received this message in error please notify us at once by return email and then delete both messages. We accept no liability for the distribution of viruses or similar in electronic communications. This notice should not be removed.
On Tue, 2019-10-01 at 14:39 -0400, Satish Patel wrote:
did you try to removing "hw:numa_nodes=1" ?
that will have no effect the vm implcitly has a numa toplogy of 1 node due to usei cpu pinning. so hw:numa_nodes=1 is identical to what will be setting hw:cpu_policy=dedicated
openstack flavor create --public xlarge.numa.perf.test --ram 200000 --disk 700 --vcpus 20 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
looking at the numa info that was provided.
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 0 size: 262029 MB
node 0 free: 52787 MB
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
it looks like you have a dual socket host with 14 cores per secket and hyper threading enabled.
looking at the flaovr hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate enables pinning and allocate 1 addtional pinned for the emulator thread.
since hw:cpu_treads_policy is not defien the behavior will be determined by the numa of cores requrested.
by default if the flavor.vcpu is even it would default to the require policy and try to use hyper tread siblibngs if flavor.vcpu was odd it would defualt to isolate policy and try to isolate individual cores. this was originally done to prevent a class of timing based attach that can be executed if two vms were pinned differnet hyperthread on the same core. i say be defualt as you are also useing hw:emulator_threads_policy=isolate which actully means you are askign for 21 cores and im not sure of the top of my head which policy will take effect. strictly speacking the prefer policy is used but it behavior is subtle.
anway form the numa info above reaange the data to show the tread siblings
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
if you have look at this long enough you will know after kernel 4.0 enumates in a prediable way that is different form the predicable way that older kernels used to enuamrete cores in.
if we boot 1 vm say on node0 which is the socket 0 in this case as well with the above flaovr i would expect the free cores to look like this
node 0 cpus: - - - - - - - - - - - 11 12 13 - - - - - - - - - - 38 39 40 41
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
looking at the pci white list there is something else that you can see
passthrough_whitelist = [ {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"},
{"address":"0000:09:00.0"}, {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} ]
for all the devies the first 2 bytes are 0000 this is the pci domain.
on a multi socket sytems, or at least on any 2 socket system new enouglsht to processor wth 14 cores and hypertreading you will have 2 different pci roots. 1 pci route complex per phyical processor. in a system with multiple pci root complex 1 becomes the primary pci root and is assigned the 0000 domain and the second is can be asigned a different domain adress but that depend on your kernel commandline option and the number of devices. form my experince when only a single domain is create the second numa node device start with 0000:80:xx.y or higher so {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"},{"address":"0000:09:00.0"} shoudl be on numa node 0 and shuld be assinged to the vm
that leave {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} and node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
so from an openstack point of view there are enough core free to pin the second vm and there are devices free on the same numa node.
node 0 free: 52787 MB node 1 free: 250624 MB
200G is being used on node 0 by the first vm and there is 250 is free on node 1.
as kashyap pointed out in an earlier reply the most likely cause of the "qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory" error is a libvirt interaction with a kvm kernel bug that was fix in kernel 4.19 (4.19 fixes a lot of kvm bugs and enabled nestexd virt by default so you shoudl use 4.19+ if you can) kashyap submitted https://review.opendev.org/#/c/684375/ as a possible way to workaround to the kernel issue by relaxing the requirement nova places on the memory assgined to a guest that is not used for guest ram.
effectivly we belive that the root case is on the host if you run "grep DMA32 /proc/zoneinfo" the DMA32 zone will only exist on 1 nuam node.
e.g. sean@workstation:~$ grep DMA32 /proc/zoneinfo Node 0, zone DMA32 Node 1, zone DMA32
https://review.opendev.org/#/c/684375/ we belive would allow the second vm to booth with numa affined guest ram but non numa affined DMA memroy however that could have negative performace implication in some cases. nova connot contol how where DMA memroy is allocated by the kernel so this cannot be fully adress by nova.
ideally the best way to fix this would be to some how force your kenel to allocate DMA32 zones per numa node but i am not aware of a way to do that.
so to ansewr the orginal question 'What "emu-kvm: kvm_init_vcpu failed: Cannot allocate memory" means in this context?' my understanding is that it mean qemu could not allcate memory form a DMA32 zone on the same numa node as the cpus and guest ram for the PCI passthough devices which would be required when <memory mode="strict" ...> is defiend. we always require strict mode when we have a vm with a numa toplogy to ensure that the guest memroy is allocated form the node we requested but if you are using pci passtouhg and do not have DMA32 zones. it is my understanding that on newewr kernels the kvm modules allows non local DMA zones to be used. with all that said it is very uncommon to have hardware that dose not have a DMA and DMA32 zone per numa node so most peopel will never have this problem.
On Tue, Oct 1, 2019 at 2:16 PM Manuel Sopena Ballesteros manuel.sb@garvan.org.au wrote:
Dear Openstack user community,
I have a compute node with 2 numa nodes and I would like to create 2 vms, each one using a different numa node through numa affinity with cpu, memory and nvme pci devices.
pci passthrough whitelist
[root@zeus-53 ~]# tail /etc/kolla/nova-compute/nova.conf
[notifications]
[filter_scheduler]
enabled_filters = enabled_filters = RetryFilter, AvailabilityZoneFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter, PciPassthroughFilter
available_filters = nova.scheduler.filters.all_filters
[pci]
passthrough_whitelist = [ {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"}, {"address":"0000:09:00.0"}, {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} ]
alias = { "vendor_id":"8086", "product_id":"0953", "device_type":"type-PCI", "name":"nvme"}
Openstack flavor
openstack flavor create --public xlarge.numa.perf.test --ram 200000 --disk 700 --vcpus 20 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
The first vm is successfully created
openstack server create --network hpc --flavor xlarge.numa.perf.test --image centos7.6-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-1
However the second vm fails
openstack server create --network hpc --flavor xlarge.numa.perf --image centos7.6-kudu-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-4
Errors in nova compute node
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [req-b5a25c73-8c7d-466c-8128-71f29e7ae8aa 91e83343e9834c8ba0172ff369c8acac b91520cff5bd45c59a8de07c38641582 - default default] [instance: ebe4e78c-501e-4535- ae15-948301cbf1ae] Instance failed to spawn: libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] Traceback (most recent call last):
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2369, in _build_resources
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] yield resources
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2133, in _build_and_run_instance
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] block_device_info=block_device_info)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3142, in spawn
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] destroy_disks_on_failure=True)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5705, in _create_domain_and_network
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] destroy_disks_on_failure)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] self.force_reraise()
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] six.reraise(self.type_, self.value, self.tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5674, in _create_domain_and_network
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] post_xml_callback=post_xml_callback)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5608, in _create_domain
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] guest.launch(pause=pause)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] self._encoded_xml, errors='ignore')
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] self.force_reraise()
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] six.reraise(self.type_, self.value, self.tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] return self._domain.createWithFlags(flags)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] result = proxy_call(self._autowrap, f, *args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = execute(f, *args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] six.reraise(c, e, tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = meth(*args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1110, in createWithFlags
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae]
Numa cell/node 1 (the one assigned on kudu-4) has enough cpu, memory, pci devices and disk capacity to fit this vm. NOTE: below is the information relevant I could think of that shows resources available after creating the second vm.
[root@zeus-53 ~]# numactl -H
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 0 size: 262029 MB
node 0 free: 52787 MB
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
node 1 size: 262144 MB
node 1 free: 250624 MB
node distances:
node 0 1
0: 10 21
1: 21 10
NOTE: this is to show that numa node/cell 1 has enough resources available (also nova-compute logs shows that kudu-4 is assigned to cell 1)
[root@zeus-53 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md127 3.7T 9.1G 3.7T 1% /
...
NOTE: vm disk files goes to root (/) partition
[root@zeus-53 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 59.6G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 16G 0 part [SWAP]
loop0 7:0 0 100G 0 loop
└─docker-9:127-6979358884-pool 253:0 0 100G 0 dm
├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm
├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm
├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm
├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm
├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm
├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm
├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm
├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm
├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm
├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm
└─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm
loop1 7:1 0 2G 0 loop
└─docker-9:127-6979358884-pool 253:0 0 100G 0 dm
├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm
├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm
├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm
├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm
├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm
├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm
├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm
├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm
├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm
├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm
└─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm
nvme0n1 259:8 0 1.8T 0 disk
└─nvme0n1p1 259:9 0 1.8T 0 part
└─md127 9:127 0 3.7T 0 raid0 /
nvme1n1 259:6 0 1.8T 0 disk
└─nvme1n1p1 259:7 0 1.8T 0 part
└─md127 9:127 0 3.7T 0 raid0 /
nvme2n1 259:2 0 1.8T 0 disk
nvme3n1 259:1 0 1.8T 0 disk
nvme4n1 259:0 0 1.8T 0 disk
nvme5n1 259:3 0 1.8T 0 disk
NOTE: this is to show that there are 4 nvme disks (nvme2n1, nvme3n1, nvme4n1, nvme5n1) available for the second vm
What "emu-kvm: kvm_init_vcpu failed: Cannot allocate memory" means in this context?
Thank you very much
NOTICE Please consider the environment before printing this email. This message and any attachments are intended for the addressee named and may contain legally privileged/confidential/copyright information. If you are not the intended recipient, you should not read, use, disclose, copy or distribute this communication. If you have received this message in error please notify us at once by return email and then delete both messages. We accept no liability for the distribution of viruses or similar in electronic communications. This notice should not be removed.
Sean good to hear from you, amazing reply, i took some notes from it.
On Tue, Oct 1, 2019 at 7:25 PM Sean Mooney smooney@redhat.com wrote:
On Tue, 2019-10-01 at 14:39 -0400, Satish Patel wrote:
did you try to removing "hw:numa_nodes=1" ?
that will have no effect the vm implcitly has a numa toplogy of 1 node due to usei cpu pinning. so hw:numa_nodes=1 is identical to what will be setting hw:cpu_policy=dedicated
openstack flavor create --public xlarge.numa.perf.test --ram 200000 --disk 700 --vcpus 20 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
looking at the numa info that was provided.
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 0 size: 262029 MB
node 0 free: 52787 MB
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
it looks like you have a dual socket host with 14 cores per secket and hyper threading enabled.
looking at the flaovr hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate enables pinning and allocate 1 addtional pinned for the emulator thread.
since hw:cpu_treads_policy is not defien the behavior will be determined by the numa of cores requrested.
by default if the flavor.vcpu is even it would default to the require policy and try to use hyper tread siblibngs if flavor.vcpu was odd it would defualt to isolate policy and try to isolate individual cores. this was originally done to prevent a class of timing based attach that can be executed if two vms were pinned differnet hyperthread on the same core. i say be defualt as you are also useing hw:emulator_threads_policy=isolate which actully means you are askign for 21 cores and im not sure of the top of my head which policy will take effect. strictly speacking the prefer policy is used but it behavior is subtle.
anway form the numa info above reaange the data to show the tread siblings
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
if you have look at this long enough you will know after kernel 4.0 enumates in a prediable way that is different form the predicable way that older kernels used to enuamrete cores in.
if we boot 1 vm say on node0 which is the socket 0 in this case as well with the above flaovr i would expect the free cores to look like this
node 0 cpus: - - - - - - - - - - - 11 12 13 - - - - - - - - - - 38 39 40 41
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
looking at the pci white list there is something else that you can see
passthrough_whitelist = [ {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"},
{"address":"0000:09:00.0"}, {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} ]
for all the devies the first 2 bytes are 0000 this is the pci domain.
on a multi socket sytems, or at least on any 2 socket system new enouglsht to processor wth 14 cores and hypertreading you will have 2 different pci roots. 1 pci route complex per phyical processor. in a system with multiple pci root complex 1 becomes the primary pci root and is assigned the 0000 domain and the second is can be asigned a different domain adress but that depend on your kernel commandline option and the number of devices. form my experince when only a single domain is create the second numa node device start with 0000:80:xx.y or higher so {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"},{"address":"0000:09:00.0"} shoudl be on numa node 0 and shuld be assinged to the vm
that leave {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} and node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
so from an openstack point of view there are enough core free to pin the second vm and there are devices free on the same numa node.
node 0 free: 52787 MB node 1 free: 250624 MB
200G is being used on node 0 by the first vm and there is 250 is free on node 1.
as kashyap pointed out in an earlier reply the most likely cause of the "qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory" error is a libvirt interaction with a kvm kernel bug that was fix in kernel 4.19 (4.19 fixes a lot of kvm bugs and enabled nestexd virt by default so you shoudl use 4.19+ if you can) kashyap submitted https://review.opendev.org/#/c/684375/ as a possible way to workaround to the kernel issue by relaxing the requirement nova places on the memory assgined to a guest that is not used for guest ram.
effectivly we belive that the root case is on the host if you run "grep DMA32 /proc/zoneinfo" the DMA32 zone will only exist on 1 nuam node.
e.g. sean@workstation:~$ grep DMA32 /proc/zoneinfo Node 0, zone DMA32 Node 1, zone DMA32
https://review.opendev.org/#/c/684375/ we belive would allow the second vm to booth with numa affined guest ram but non numa affined DMA memroy however that could have negative performace implication in some cases. nova connot contol how where DMA memroy is allocated by the kernel so this cannot be fully adress by nova.
ideally the best way to fix this would be to some how force your kenel to allocate DMA32 zones per numa node but i am not aware of a way to do that.
so to ansewr the orginal question 'What "emu-kvm: kvm_init_vcpu failed: Cannot allocate memory" means in this context?' my understanding is that it mean qemu could not allcate memory form a DMA32 zone on the same numa node as the cpus and guest ram for the PCI passthough devices which would be required when <memory mode="strict" ...> is defiend. we always require strict mode when we have a vm with a numa toplogy to ensure that the guest memroy is allocated form the node we requested but if you are using pci passtouhg and do not have DMA32 zones. it is my understanding that on newewr kernels the kvm modules allows non local DMA zones to be used. with all that said it is very uncommon to have hardware that dose not have a DMA and DMA32 zone per numa node so most peopel will never have this problem.
On Tue, Oct 1, 2019 at 2:16 PM Manuel Sopena Ballesteros manuel.sb@garvan.org.au wrote:
Dear Openstack user community,
I have a compute node with 2 numa nodes and I would like to create 2 vms, each one using a different numa node through numa affinity with cpu, memory and nvme pci devices.
pci passthrough whitelist
[root@zeus-53 ~]# tail /etc/kolla/nova-compute/nova.conf
[notifications]
[filter_scheduler]
enabled_filters = enabled_filters = RetryFilter, AvailabilityZoneFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter, PciPassthroughFilter
available_filters = nova.scheduler.filters.all_filters
[pci]
passthrough_whitelist = [ {"address":"0000:06:00.0"}, {"address":"0000:07:00.0"}, {"address":"0000:08:00.0"}, {"address":"0000:09:00.0"}, {"address":"0000:84:00.0"}, {"address":"0000:85:00.0"}, {"address":"0000:86:00.0"}, {"address":"0000:87:00.0"} ]
alias = { "vendor_id":"8086", "product_id":"0953", "device_type":"type-PCI", "name":"nvme"}
Openstack flavor
openstack flavor create --public xlarge.numa.perf.test --ram 200000 --disk 700 --vcpus 20 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
The first vm is successfully created
openstack server create --network hpc --flavor xlarge.numa.perf.test --image centos7.6-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-1
However the second vm fails
openstack server create --network hpc --flavor xlarge.numa.perf --image centos7.6-kudu-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-4
Errors in nova compute node
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [req-b5a25c73-8c7d-466c-8128-71f29e7ae8aa 91e83343e9834c8ba0172ff369c8acac b91520cff5bd45c59a8de07c38641582 - default default] [instance: ebe4e78c-501e-4535- ae15-948301cbf1ae] Instance failed to spawn: libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] Traceback (most recent call last):
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2369, in _build_resources
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] yield resources
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2133, in _build_and_run_instance
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] block_device_info=block_device_info)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3142, in spawn
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] destroy_disks_on_failure=True)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5705, in _create_domain_and_network
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] destroy_disks_on_failure)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] self.force_reraise()
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] six.reraise(self.type_, self.value, self.tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5674, in _create_domain_and_network
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] post_xml_callback=post_xml_callback)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5608, in _create_domain
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] guest.launch(pause=pause)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] self._encoded_xml, errors='ignore')
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] self.force_reraise()
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] six.reraise(self.type_, self.value, self.tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] return self._domain.createWithFlags(flags)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] result = proxy_call(self._autowrap, f, *args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = execute(f, *args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15- 948301cbf1ae] six.reraise(c, e, tb)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] rv = meth(*args, **kwargs)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1110, in createWithFlags
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae] libvirtError: internal error: qemu unexpectedly closed the monitor: 2019-09-27T06:45:19.118089Z qemu-kvm: kvm_init_vcpu failed: Cannot allocate memory
2019-09-27 16:45:19.785 7 ERROR nova.compute.manager [instance: ebe4e78c-501e-4535-ae15-948301cbf1ae]
Numa cell/node 1 (the one assigned on kudu-4) has enough cpu, memory, pci devices and disk capacity to fit this vm. NOTE: below is the information relevant I could think of that shows resources available after creating the second vm.
[root@zeus-53 ~]# numactl -H
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 0 size: 262029 MB
node 0 free: 52787 MB
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
node 1 size: 262144 MB
node 1 free: 250624 MB
node distances:
node 0 1
0: 10 21
1: 21 10
NOTE: this is to show that numa node/cell 1 has enough resources available (also nova-compute logs shows that kudu-4 is assigned to cell 1)
[root@zeus-53 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md127 3.7T 9.1G 3.7T 1% /
...
NOTE: vm disk files goes to root (/) partition
[root@zeus-53 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 59.6G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 16G 0 part [SWAP]
loop0 7:0 0 100G 0 loop
└─docker-9:127-6979358884-pool 253:0 0 100G 0 dm
├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm
├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm
├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm
├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm
├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm
├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm
├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm
├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm
├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm
├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm
└─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm
loop1 7:1 0 2G 0 loop
└─docker-9:127-6979358884-pool 253:0 0 100G 0 dm
├─docker-9:127-6979358884-4301cee8d0433729cd6332ca2b6111afc85f14c48d4ce2d888a1da0ef9b5ca01 253:1 0 10G 0 dm
├─docker-9:127-6979358884-d59208adcb7cee3418f810f24e6c3a55d39281f713c8e76141fc61a8deba8a2b 253:2 0 10G 0 dm
├─docker-9:127-6979358884-106bc0838e37442eca84eb9ab17aa7a45308b7e3a38be3fb21a4fa00366fe306 253:3 0 10G 0 dm
├─docker-9:127-6979358884-7e16b5d012ab8744739b671fcdc8e47db5cc64e6c3d5a5fe423bfd68cfb07b20 253:4 0 10G 0 dm
├─docker-9:127-6979358884-f1c2545b4edbfd7b42d2a492eda8224fcf7cefc3e3a41e65d307c585acffe6a8 253:5 0 10G 0 dm
├─docker-9:127-6979358884-e7fd6c7b3f624f387bdb3746a7944a30c92d8ee5395e75c76288b281bd009d90 253:6 0 10G 0 dm
├─docker-9:127-6979358884-95a818cc7afd9867385bb9a9ea750d4cc6e162916c6ae3a157097af74578e1e4 253:7 0 10G 0 dm
├─docker-9:127-6979358884-9a7f28d396c149119556f382bf5c19f5925eed5d18b94407649244c7adabb4b3 253:8 0 10G 0 dm
├─docker-9:127-6979358884-b25941b6f115300caea977911e2d7fd3541ef187c9aa5736fe10fad638ecd0d1 253:9 0 10G 0 dm
├─docker-9:127-6979358884-122b201c6ad24896a205f8db4a64759ba8fbd5bbe245d0f98984268a01e6a0c4 253:10 0 10G 0 dm
└─docker-9:127-6979358884-bc04120ba59a1b393f338a1cef64b16d920cf4e73400198e4b999bb72a42ff90 253:11 0 10G 0 dm
nvme0n1 259:8 0 1.8T 0 disk
└─nvme0n1p1 259:9 0 1.8T 0 part
└─md127 9:127 0 3.7T 0 raid0 /
nvme1n1 259:6 0 1.8T 0 disk
└─nvme1n1p1 259:7 0 1.8T 0 part
└─md127 9:127 0 3.7T 0 raid0 /
nvme2n1 259:2 0 1.8T 0 disk
nvme3n1 259:1 0 1.8T 0 disk
nvme4n1 259:0 0 1.8T 0 disk
nvme5n1 259:3 0 1.8T 0 disk
NOTE: this is to show that there are 4 nvme disks (nvme2n1, nvme3n1, nvme4n1, nvme5n1) available for the second vm
What "emu-kvm: kvm_init_vcpu failed: Cannot allocate memory" means in this context?
Thank you very much
NOTICE Please consider the environment before printing this email. This message and any attachments are intended for the addressee named and may contain legally privileged/confidential/copyright information. If you are not the intended recipient, you should not read, use, disclose, copy or distribute this communication. If you have received this message in error please notify us at once by return email and then delete both messages. We accept no liability for the distribution of viruses or similar in electronic communications. This notice should not be removed.
participants (3)
-
Manuel Sopena Ballesteros
-
Satish Patel
-
Sean Mooney