Public bug reported: The nova-compute service with libvirt driver fails to start with power management enabled with cpu_startegy if the host OS only support offlining CPUs but does not support any cpufreq governor.
The cpu_state strategy should not depend on any cpufreq governor so nova-compute should start. [root@edpm-compute-0 ~]# egrep -e 'cpu_dedicated|power|strategy' /var/lib/openstack/config/nova/ -R /var/lib/openstack/config/nova/01-nova.conf:cpu_power_management=true /var/lib/openstack/config/nova/05-nova-extra.conf:cpu_dedicated_set = 1 2023-12-08 09:54:43.865 2 ERROR oslo_service.service [None req-7109fd97-f101-452e-abcd-37c0b52b649e - - - - - -] Error starting thread.: nova.exception.FileNotFound: File /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor could not be found. 2023-12-08 09:54:43.865 2 ERROR oslo_service.service Traceback (most recent call last): 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/filesystem.py", line 37, in read_sys 2023-12-08 09:54:43.865 2 ERROR oslo_service.service with open(os.path.join(SYS, path), mode='r') as data: 2023-12-08 09:54:43.865 2 ERROR oslo_service.service FileNotFoundError: [Errno 2] No such file or directory: '/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor' 2023-12-08 09:54:43.865 2 ERROR oslo_service.service 2023-12-08 09:54:43.865 2 ERROR oslo_service.service The above exception was the direct cause of the following exception: 2023-12-08 09:54:43.865 2 ERROR oslo_service.service 2023-12-08 09:54:43.865 2 ERROR oslo_service.service Traceback (most recent call last): 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/oslo_service/service.py", line 806, in run_service 2023-12-08 09:54:43.865 2 ERROR oslo_service.service service.start() 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/service.py", line 162, in start 2023-12-08 09:54:43.865 2 ERROR oslo_service.service self.manager.init_host(self.service_ref) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/compute/manager.py", line 1608, in init_host 2023-12-08 09:54:43.865 2 ERROR oslo_service.service self.driver.init_host(host=self.host) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/driver.py", line 825, in init_host 2023-12-08 09:54:43.865 2 ERROR oslo_service.service libvirt_cpu.validate_all_dedicated_cpus() 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/cpu/api.py", line 140, in validate_all_dedicated_cpus 2023-12-08 09:54:43.865 2 ERROR oslo_service.service governors.add(pcpu.governor) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/cpu/api.py", line 63, in governor 2023-12-08 09:54:43.865 2 ERROR oslo_service.service return core.get_governor(self.ident) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/cpu/core.py", line 69, in get_governor 2023-12-08 09:54:43.865 2 ERROR oslo_service.service return filesystem.read_sys( 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/filesystem.py", line 40, in read_sys 2023-12-08 09:54:43.865 2 ERROR oslo_service.service raise exception.FileNotFound(file_path=path) from exc 2023-12-08 09:54:43.865 2 ERROR oslo_service.service nova.exception.FileNotFound: File /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor could not be found. [root@edpm-compute-0 ~]# ll /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor ls: cannot access '/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor': No such file or directory [root@edpm-compute-0 ~]# ll /sys/devices/system/cpu/cpu1/cpufreq/ ls: cannot access '/sys/devices/system/cpu/cpu1/cpufreq/': No such file or directory [root@edpm-compute-0 ~]# ll /sys/devices/system/cpu/cpu1/ total 0 drwxr-xr-x. 6 root root 0 Dec 8 10:01 cache -r--------. 1 root root 4096 Dec 8 09:21 crash_notes -r--------. 1 root root 4096 Dec 8 09:21 crash_notes_size lrwxrwxrwx. 1 root root 0 Dec 8 09:21 driver -> ../../../../bus/cpu/drivers/processor lrwxrwxrwx. 1 root root 0 Dec 8 09:21 firmware_node -> ../../../LNXSYSTM:00/LNXSYBUS:00/ACPI0010:00/LNXCPU:01 drwxr-xr-x. 2 root root 0 Dec 8 09:21 hotplug lrwxrwxrwx. 1 root root 0 Dec 8 09:21 node0 -> ../../node/node0 -rw-r--r--. 1 root root 4096 Dec 8 10:01 online drwxr-xr-x. 2 root root 0 Dec 8 09:21 power lrwxrwxrwx. 1 root root 0 Dec 8 09:21 subsystem -> ../../../../bus/cpu drwxr-xr-x. 2 root root 0 Dec 8 10:01 topology -rw-r--r--. 1 root root 4096 Dec 8 09:21 uevent [root@edpm-compute-0 ~]# cat /etc/*release* CentOS Stream release 9 NAME="CentOS Stream" VERSION="9" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="9" PLATFORM_ID="platform:el9" PRETTY_NAME="CentOS Stream 9" ANSI_COLOR="0;31" LOGO="fedora-logo-icon" CPE_NAME="cpe:/o:centos:centos:9" HOME_URL="https://centos.org/"; BUG_REPORT_URL="https://bugzilla.redhat.com/"; REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 9" REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream" CentOS Stream release 9 CentOS Stream release 9 cpe:/o:centos:centos:9 [root@edpm-compute-0 ~]# uname -a Linux edpm-compute-0 5.14.0-390.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Nov 24 10:44:56 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux ** Affects: nova Importance: Medium Assignee: Balazs Gibizer (balazs-gibizer) Status: In Progress ** Tags: libvirt -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/2045966 Title: cpu_power_management_strategy=cpu_state failes if the host supports no governors Status in OpenStack Compute (nova): In Progress Bug description: The nova-compute service with libvirt driver fails to start with power management enabled with cpu_startegy if the host OS only support offlining CPUs but does not support any cpufreq governor. The cpu_state strategy should not depend on any cpufreq governor so nova-compute should start. [root@edpm-compute-0 ~]# egrep -e 'cpu_dedicated|power|strategy' /var/lib/openstack/config/nova/ -R /var/lib/openstack/config/nova/01-nova.conf:cpu_power_management=true /var/lib/openstack/config/nova/05-nova-extra.conf:cpu_dedicated_set = 1 2023-12-08 09:54:43.865 2 ERROR oslo_service.service [None req-7109fd97-f101-452e-abcd-37c0b52b649e - - - - - -] Error starting thread.: nova.exception.FileNotFound: File /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor could not be found. 2023-12-08 09:54:43.865 2 ERROR oslo_service.service Traceback (most recent call last): 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/filesystem.py", line 37, in read_sys 2023-12-08 09:54:43.865 2 ERROR oslo_service.service with open(os.path.join(SYS, path), mode='r') as data: 2023-12-08 09:54:43.865 2 ERROR oslo_service.service FileNotFoundError: [Errno 2] No such file or directory: '/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor' 2023-12-08 09:54:43.865 2 ERROR oslo_service.service 2023-12-08 09:54:43.865 2 ERROR oslo_service.service The above exception was the direct cause of the following exception: 2023-12-08 09:54:43.865 2 ERROR oslo_service.service 2023-12-08 09:54:43.865 2 ERROR oslo_service.service Traceback (most recent call last): 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/oslo_service/service.py", line 806, in run_service 2023-12-08 09:54:43.865 2 ERROR oslo_service.service service.start() 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/service.py", line 162, in start 2023-12-08 09:54:43.865 2 ERROR oslo_service.service self.manager.init_host(self.service_ref) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/compute/manager.py", line 1608, in init_host 2023-12-08 09:54:43.865 2 ERROR oslo_service.service self.driver.init_host(host=self.host) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/driver.py", line 825, in init_host 2023-12-08 09:54:43.865 2 ERROR oslo_service.service libvirt_cpu.validate_all_dedicated_cpus() 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/cpu/api.py", line 140, in validate_all_dedicated_cpus 2023-12-08 09:54:43.865 2 ERROR oslo_service.service governors.add(pcpu.governor) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/cpu/api.py", line 63, in governor 2023-12-08 09:54:43.865 2 ERROR oslo_service.service return core.get_governor(self.ident) 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/virt/libvirt/cpu/core.py", line 69, in get_governor 2023-12-08 09:54:43.865 2 ERROR oslo_service.service return filesystem.read_sys( 2023-12-08 09:54:43.865 2 ERROR oslo_service.service File "/usr/lib/python3.9/site-packages/nova/filesystem.py", line 40, in read_sys 2023-12-08 09:54:43.865 2 ERROR oslo_service.service raise exception.FileNotFound(file_path=path) from exc 2023-12-08 09:54:43.865 2 ERROR oslo_service.service nova.exception.FileNotFound: File /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor could not be found. [root@edpm-compute-0 ~]# ll /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor ls: cannot access '/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor': No such file or directory [root@edpm-compute-0 ~]# ll /sys/devices/system/cpu/cpu1/cpufreq/ ls: cannot access '/sys/devices/system/cpu/cpu1/cpufreq/': No such file or directory [root@edpm-compute-0 ~]# ll /sys/devices/system/cpu/cpu1/ total 0 drwxr-xr-x. 6 root root 0 Dec 8 10:01 cache -r--------. 1 root root 4096 Dec 8 09:21 crash_notes -r--------. 1 root root 4096 Dec 8 09:21 crash_notes_size lrwxrwxrwx. 1 root root 0 Dec 8 09:21 driver -> ../../../../bus/cpu/drivers/processor lrwxrwxrwx. 1 root root 0 Dec 8 09:21 firmware_node -> ../../../LNXSYSTM:00/LNXSYBUS:00/ACPI0010:00/LNXCPU:01 drwxr-xr-x. 2 root root 0 Dec 8 09:21 hotplug lrwxrwxrwx. 1 root root 0 Dec 8 09:21 node0 -> ../../node/node0 -rw-r--r--. 1 root root 4096 Dec 8 10:01 online drwxr-xr-x. 2 root root 0 Dec 8 09:21 power lrwxrwxrwx. 1 root root 0 Dec 8 09:21 subsystem -> ../../../../bus/cpu drwxr-xr-x. 2 root root 0 Dec 8 10:01 topology -rw-r--r--. 1 root root 4096 Dec 8 09:21 uevent [root@edpm-compute-0 ~]# cat /etc/*release* CentOS Stream release 9 NAME="CentOS Stream" VERSION="9" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="9" PLATFORM_ID="platform:el9" PRETTY_NAME="CentOS Stream 9" ANSI_COLOR="0;31" LOGO="fedora-logo-icon" CPE_NAME="cpe:/o:centos:centos:9" HOME_URL="https://centos.org/"; BUG_REPORT_URL="https://bugzilla.redhat.com/"; REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 9" REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream" CentOS Stream release 9 CentOS Stream release 9 cpe:/o:centos:centos:9 [root@edpm-compute-0 ~]# uname -a Linux edpm-compute-0 5.14.0-390.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Nov 24 10:44:56 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/2045966/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
