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Oracle Linux: KVM Troubleshooting (Doc ID 2729373.1)

Last updated on JUNE 17, 2021

Applies to:

Linux OS - Version Oracle Linux 7.0 and later
Linux x86-64

Purpose

List KVM known issues, how to troubleshoot and resolve them.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Error: Log files
 Error: Create KVM Guest VMs with ISO
 Error: (domain_definition):9: StartTag: invalid element name
 Error: (domain_definition):20: Unescaped '<' not allowed in attributes values
 Error: (domain_definition):22: Opening and ending tag mismatch: domain line 1
 Error: (domain_definition):1: Specification mandate value for attribute type <domain ty pe='kvm'>
 Error: failed to connect to the hypervisor using URI or Failed to connect to the hypervisor or No connection driver available
 Error: Cannot read CA certificate '/etc/pki/CA/cacert.pem': No such file or directory or  Failed to connect to the hypervisor
 Error: Import an OVA Guest VM format template into KVM
 Error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied  or Failed to connect to the hypervisor
 Error: unable to connect to server at '<HOSTNAME:16509>': Connection refused
 Error: libvirtd failed to start
 Error: Bridge networking interface does not show up
 Error: Biosdevname & no network
 Error: Domain already exists
 Error: Failed to create domain from machine.xml or Internal error Unable to find cgroup for machine
 Error: Virtual machine vanishes from VMM on halt/reboot
 Error: No reboot action; function is not supported
 Error: Boot loader error after installation
 Error: Server hung or non-recoverable errors, how to collect troubleshooting data
 Error: Starting Virtual Machine giving error " Failed to start domain ORACLE_LINUX7"  Cannot access storage file '/var/lib/libvirt/images/test_vol2.qcow2': No such file or directory
 Error: Blue screen at boot
 Error: No disks found or Unknown media
 Error: During the installation of Windows, the error "A disk read error occurred"
 Error: Once Windows is installed, if you are not able to increase the screen resolution of your virtual machine
 Error: irq status -75 received" after Attached USB KVM
 Error: Guest Can Reach Outside Network, But Cannot Reach Or Either Ping Host
 Error: How to list the MAC for VMs
 Error: How to check QEMU emulator version
 Error: How to Clone the VM
 Error: autostart for VM disable/enable
 Error: forcefully shutdown of active domain
 Error: How to create images and Disk detached/attach
 Error: How to resize the images
 Error: How to delete the images
 Error: How to list/edit net on host
 Error: How to check network error/Mac for the VM from Host
 Error: How to check/start/stop NIC for VM from Host
 Error: How to collect memory statistics for a running guest virtual machine
 Error: How to display the block device errors for a virtual machine
 Error: How to lists the capacity, allocation, and physical block sizes for a specific block device for the virtual machine
 Error: How to display the block devices that are associated with a virtual machine
 Error: How to inject an NMI to the guest virtual machine
 Error: How to take consistency level snapshots for VM
 Error: Internal error: qemu unexpectedly closed the monitor: Could not access KVM kernel module: Permission denied
 Error: Failed to create domain from Weblogic1.xml " Cannot check QEMU binary /usr/libexec/qemu-kvm: No such file or directory "
 Error: How to rename VM from Produciton-A to Produciton-B

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