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Type: Bug
Resolution: Done
Priority: Major
Fix Version/s: rhos-17.1.8
Affects Version/s: rhos-17.1.5
Component/s: os-net-config
Labels:
- Triaged

Story Points:
3
Epic Link:
OSPRH-15126
Blocked:
False
Blocked Reason:

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None

Show
None
Ready:
False
Docs Approval:
?
Fixed in Build:
os-net-config-14.2.1-17.1.20250425111017.61d7bd7.el9osttrunk
AssignedTeam:
rhos-connectivity-nfv
Regression:
Yes
Release Note Text:

Hide
.Fixes race condition that generated exception during SR-IOV Compute node reboot and minor updates

Before this update, during SR-IOV Compute node reboot, a race condition occurred between `usr/bin/os-net-config-sriov` and `sysfs` (in physical function (PF) creation). As a result, the device was not available for the `usr/bin/os-net-config-sriov`, and an exception was generated.

Now the race condition does not occur and the exception is not generated.

Show
.Fixes race condition that generated exception during SR-IOV Compute node reboot and minor updates Before this update, during SR-IOV Compute node reboot, a race condition occurred between `usr/bin/os-net-config-sriov` and `sysfs` (in physical function (PF) creation). As a result, the device was not available for the `usr/bin/os-net-config-sriov`, and an exception was generated. Now the race condition does not occur and the exception is not generated.
Release Note Type:
Bug Fix
Release Note Status:
Done
Intelligence Requested:
Market:
Errata Link:
https://errata.engineering.redhat.com/advisory/149893

Severity:
Low

SFDC Cases Counter:
SFDC Cases Open:
SFDC Cases Links:

To Reproduce Steps to reproduce the behavior:

In the process of verifying OSPRH-14132 where os-net-config executes 2 times (one for first deployment and one for update), I have seen the following errors in logs

2025-03-26 17:49:21.180 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-eno2
2025-03-26 17:49:21.180 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/route-eno2
2025-03-26 17:49:21.180 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-enp130s0f0
2025-03-26 17:49:21.181 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-enp130s0f1
2025-03-26 17:49:21.181 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-dpdkbond0
2025-03-26 17:49:21.181 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-dpdk2
2025-03-26 17:49:21.181 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-dpdk3
2025-03-26 17:49:21.181 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-br-link0
2025-03-26 17:49:21.182 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-br-dpdk0
2025-03-26 17:49:21.182 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-br-dpdk1
2025-03-26 17:49:21.182 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-bond_api
2025-03-26 17:49:21.182 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-vlan120
2025-03-26 17:49:21.182 INFO os_net_config.write_config Writing config /etc/sysconfig/network-scripts/ifcfg-vlan122
2025-03-26 17:49:21.183 INFO os_net_config.execute running ifup on bridge: br-link0
2025-03-26 17:49:24.596 INFO os_net_config.execute running ifup on bridge: br-dpdk0
2025-03-26 17:49:26.830 INFO os_net_config.execute running ifup on bridge: br-dpdk1
2025-03-26 17:49:29.058 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for eno1
2025-03-26 17:49:29.058 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for eno2
2025-03-26 17:49:29.058 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for enp130s0f0
2025-03-26 17:49:29.058 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for enp130s0f1
2025-03-26 17:49:29.058 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for dpdkbond0
2025-03-26 17:49:29.058 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for dpdk2
2025-03-26 17:49:29.059 DEBUG os_net_config.impl_ifcfg.apply Calling stop_dhclient_interfaces() for dpdk3
2025-03-26 17:49:29.059 INFO os_net_config.execute running ifup on interface: eno1
2025-03-26 17:49:29.308 INFO os_net_config.execute running ifup on interface: eno2
2025-03-26 17:49:32.599 INFO os_net_config.execute running ifup on interface: enp130s0f0
2025-03-26 17:49:33.325 INFO os_net_config.execute running ifup on interface: enp130s0f1
2025-03-26 17:49:33.784 INFO os_net_config.execute running ifup on interface: dpdkbond0
2025-03-26 17:49:36.215 INFO os_net_config.execute running ifup on interface: dpdk2
2025-03-26 17:49:39.127 INFO os_net_config.execute running ifup on interface: dpdk3
2025-03-26 17:49:41.378 INFO os_net_config.execute running ifup on interface: bond_api
2025-03-26 17:49:43.656 INFO os_net_config.execute running ifup on interface: vlan120
2025-03-26 17:49:48.760 INFO os_net_config.execute running ifup on interface: vlan122
2025-03-27 01:35:20.975 ERROR os_net_config.common.log_exceptions Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 181, in get_drivers_autoprobe
    with open(autoprobe_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/bin/os-net-config-sriov", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 961, in main
    set_drivers_autoprobe(device_name, autoprobe)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 200, in set_drivers_autoprobe
    curr_autoprobe = get_drivers_autoprobe(ifname)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 185, in get_drivers_autoprobe
    raise SRIOVAutoprobeException(msg)
os_net_config.sriov_config.SRIOVAutoprobeException: enp6s0f3: Unable to read sriov_drivers_autoprobe: [Errno 2] No such file or directory: '/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe'
NoneType: None
2025-03-27 01:35:31.411 ERROR os_net_config.common.log_exceptions Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 181, in get_drivers_autoprobe
    with open(autoprobe_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/bin/os-net-config-sriov", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 961, in main
    set_drivers_autoprobe(device_name, autoprobe)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 200, in set_drivers_autoprobe
    curr_autoprobe = get_drivers_autoprobe(ifname)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 185, in get_drivers_autoprobe
    raise SRIOVAutoprobeException(msg)
os_net_config.sriov_config.SRIOVAutoprobeException: enp4s0f1np1: Unable to read sriov_drivers_autoprobe: [Errno 2] No such file or directory: '/sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe'
NoneType: None
2025-03-27 02:05:12.917 ERROR os_net_config.common.log_exceptions Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 181, in get_drivers_autoprobe
    with open(autoprobe_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/bin/os-net-config-sriov", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 961, in main
    set_drivers_autoprobe(device_name, autoprobe)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 200, in set_drivers_autoprobe
    curr_autoprobe = get_drivers_autoprobe(ifname)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 185, in get_drivers_autoprobe
    raise SRIOVAutoprobeException(msg)
os_net_config.sriov_config.SRIOVAutoprobeException: enp6s0f3: Unable to read sriov_drivers_autoprobe: [Errno 2] No such file or directory: '/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe'
NoneType: None
2025-03-27 02:05:23.346 ERROR os_net_config.common.log_exceptions Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 181, in get_drivers_autoprobe
    with open(autoprobe_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/bin/os-net-config-sriov", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 961, in main
    set_drivers_autoprobe(device_name, autoprobe)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 200, in set_drivers_autoprobe
    curr_autoprobe = get_drivers_autoprobe(ifname)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 185, in get_drivers_autoprobe
    raise SRIOVAutoprobeException(msg)
os_net_config.sriov_config.SRIOVAutoprobeException: enp4s0f1np1: Unable to read sriov_drivers_autoprobe: [Errno 2] No such file or directory: '/sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe'
NoneType: None
2025-03-27 02:13:03.307 ERROR os_net_config.common.log_exceptions Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 181, in get_drivers_autoprobe
    with open(autoprobe_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/bin/os-net-config-sriov", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 961, in main
    set_drivers_autoprobe(device_name, autoprobe)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 200, in set_drivers_autoprobe
    curr_autoprobe = get_drivers_autoprobe(ifname)
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 185, in get_drivers_autoprobe
    raise SRIOVAutoprobeException(msg)
os_net_config.sriov_config.SRIOVAutoprobeException: enp6s0f3: Unable to read sriov_drivers_autoprobe: [Errno 2] No such file or directory: '/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe'
NoneType: None
2025-03-27 02:13:13.677 ERROR os_net_config.common.log_exceptions Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/os_net_config/sriov_config.py", line 181, in get_drivers_autoprobe
    with open(autoprobe_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe'

However, this files exists, so I think it is a race condition

[root@compute-1 tripleo-admin]# ls /sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe
/sys/class/net/enp4s0f1np1/device/sriov_drivers_autoprobe
[root@compute-1 tripleo-admin]# ls /sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe
/sys/class/net/enp6s0f3/device/sriov_drivers_autoprobe

Regression passed, so I think it is only a logging issue.

Expected behavior

Errors should not be in os-net-config log

Bug impact

Only errors in logs

links to

RHBA-2025:149893 Red Hat OpenStack Platform 17.1 bug fix and enhancement advisory

Assignee:: Vijayalakshmi Candappa

Reporter:: Miguel Angel Nieto Jimenez

Team:: rhos-dfg-nfv

Votes:: 0 Vote for this issue

Watchers:: 8 Start watching this issue

Created:: 2025/03/27 6:41 AM

Updated:: 2025/10/24 1:47 PM

Resolved:: 2025/06/12 11:08 AM

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