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Oracle Linux: After OVM Guest is Upgraded From 4.1.12-94.3.9.el7uek.x86_64 to 4.1.12-124.39.5.el7uek.x86_64, Net Devices Cannot be Recognized (Doc ID 2699111.1)

Last updated on AUGUST 20, 2020

Applies to:

Linux OS - Version Oracle Linux 6.8 and later
Linux x86-64

Symptoms

An Oracle Linux 7 virtual machine (VM) is running on an Oracle VM 3.4.5 hypervisior. After the guest VM has been upgraded from kernel version 4.1.12-94.3.9.el7uek.x86_64 to 4.1.12-124.39.5.el7uek.x86_64, it may become stuck on boot with the virtual network interfaces not being recognized.

This usually happens when a very large number of virtual block and network devices exist on the guest VM.

When this occurs the following errors will be seen in the guest VM's syslog:

Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268447232: 2 writing
multi-queue-num-queues
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268447232: failed to write
error
node for device/vbd/268447232 (2 writing multi-queue-num-queues)
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268447488: 2 writing
multi-queue-num-queues
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268447488: failed to write
error
node for device/vbd/268447488 (2 writing multi-queue-num-queues)
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268447744: 2 writing
multi-queue-num-queues
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268447744: failed to write
error
node for device/vbd/268447744 (2 writing multi-queue-num-queues)
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268448000: 2 writing
multi-queue-num-queues
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268448000: failed to write
error
node for device/vbd/268448000 (2 writing multi-queue-num-queues)
Jul 4 02:49:36 <HOSTNAME> kernel: vbd vbd-268448256: 2 writing
multi-queue-num-queues
..
Jul 4 02:54:13 <HOSTNAME> network: Bringing up loopback interface: [
OK ]
Jul 4 02:54:13 <HOSTNAME> network: Bringing up interface eth0: ERROR
:
[/etc/sysconfig/network-scripts/ifup-eth] Device eth0 does not seem to be
present, delaying initialization.
Jul 4 02:54:13 <HOSTNAME> /etc/sysconfig/network-scripts/ifup-eth:
Device
eth0 does not seem to be present, delaying initialization.
Jul 4 02:54:13 <HOSTNAME> network: [FAILED]
Jul 4 02:54:13 <HOSTNAME> network: Bringing up interface eth1: ERROR
:
[/etc/sysconfig/network-scripts/ifup-eth] Device eth1 does not seem to be
present, delaying initialization.
Jul 4 02:54:13 <HOSTNAME> /etc/sysconfig/network-scripts/ifup-eth:
Device
eth1 does not seem to be present, delaying initialization.
Jul 4 02:54:13 <HOSTNAME> network: [FAILED]
Jul 4 02:54:14 <HOSTNAME> network: Bringing up interface eth2: ERROR
:
[/etc/sysconfig/network-scripts/ifup-eth] Device eth2 does not seem to be
present, delaying initialization.

However, this behavior is not observed if the guest VM is booted with the RHCK kernel, such as RHCK kernel version 3.10.0-693.el7.x86_64.

Cause

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In this Document
Symptoms
Cause
Solution
References


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