Error: kvm run failed Invalid argument | Fixed

Learn how to deal with “Error: kvm run failed Invalid argument “. Our KVM Support team is here to help you with your questions and concerns.

Error: kvm run failed Invalid argument | Fixed

If you have been having trouble with “Error: kvm run failed Invalid argument”, you have come to the right place.

This error often occurs when launching certain VMs using QEMU and KVM.
It lets us know there is a problem within the virtualization setup, but fortunately, there are several potential solutions to explore.

QEMU and KVM are widely used open-source tools for running virtual machines. They provide robust virtualization capabilities but can sometimes face compatibility issues with specific host systems, kernel versions, or VM configurations.

Common Causes and Fixes

1. Compatibility Issues Between Host System, Kernel Version, and QEMU/KVM Setup

   This error may occur due to bugs or incompatibilities in the virtualization software affecting certain guest OS or configurations.

   We can fix this by experimenting with different kernel versions, QEMU/KVM configurations, and OVMF builds.
2. Issues with AMD’s Secure Encrypted Virtualization (SEV) and SEV-Encrypted State (SEV-ES) Configurations

   The issue may be due to the CPU type or the specific OVMF build used for AMD SEV/SEV-ES setups.

   So, try using an older OVMF release or adjust the CPU configuration by using parameters such as `-cpu host`.
3. Specific Guest OS or Configuration Problems

   This error also comes from known bugs that were fixed in later kernel versions.

   Hence, boot the VM with additional parameters like `-kernel`, `-initrd`, and `-append` to bypass the problem.

If these solutions do not resolve the issue, further investigation may be necessary. The problem may be due to certain setups and guest operating systems. So we need a more detailed examination of the environment and configurations involved.

Let us know in the comments if you need further help with this error.

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Conclusion

In brief, our Support Experts demonstrated how to deal with “Error: kvm run failed Invalid argument”.