Can Someone please help me with Issue in VM migration between Proxmox nodes?

[elija6266]

Hello there,

I am encountering an issue with VM migration between Proxmox nodes and I am hoping to get some assistance.

I have a setup with two Proxmox nodes (let's call them Node1 and Node2) connected to a shared storage. When I try to migrate a running VM from Node1 to Node2 using the Proxmox web interface, the migration fails with the following error message: "Migration failed: internal error: unable to execute QEMU command 'migrate': Device 'pci-bridge' is in use by driver 'vfio-pci'."

I have checked the logs on both nodes and it seems that the issue is related to the vfio-pci driver. The VM that I'm trying to migrate has a PCI device passed through using vfio-pci. I suspect that this might be causing the conflict during migration.

Also, I have taken help from this: https://forum.proxmox.com/threads/migration-failure-between-two-tableau.96499/ which definitely helped me out a lot.

Has anyone else encountered a similar issue with VM migration involving PCI passthrough devices?

Is there a workaround or solution to allow VM migration in this scenario?

Thankyou in advance for your help and assistance.

 

[gfngfn256]

With a VM that has a PCI passthrough, the VM is then immediately HW centric, i.e.: it uses a piece of the physical host's HW. The physical PCI is for sure not migratable, (maybe with DHL!).

The only way to enable the migration (workaround) is to first remove the PCI passthrough from the VM & then migrate.

Wiki here.