yahoo-eng-team team mailing list archive

["DongHun, Kim" <2111894@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========
After evacuating a GPU-passthrough VM, the pci_devices table retains the PCI device mappings on the original host. This prevents the GPU from being reused, blocking new deployments and causing errors in subsequent operations.

Steps to reproduce
===================
 - Deploy a GPU-passthrough VM.
 - Evacuate the VM to another host.
 - Check the pci_devices table ( SELECT * FROM pci_devices WHERE instance_uuid = '<VM_UUID>'; )
    → Entries remain on the source host with status=allocated.
 - Try to launch a new VM using the same GPU → fails with "No valid PCI device available".

Environment
===========
 - OpenStack Version: Caracal
 - PCI Tracking: non-Placement (network required for SR-IOV).

References
===========
Related to Bug #2077009 but occurs in non-Placement PCI tracking scenarios.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2111894

Title:
  Evacuate fails to release PCI device mappings for GPU VMs

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  After evacuating a GPU-passthrough VM, the pci_devices table retains the PCI device mappings on the original host. This prevents the GPU from being reused, blocking new deployments and causing errors in subsequent operations.

  Steps to reproduce
  ===================
   - Deploy a GPU-passthrough VM.
   - Evacuate the VM to another host.
   - Check the pci_devices table ( SELECT * FROM pci_devices WHERE instance_uuid = '<VM_UUID>'; )
      → Entries remain on the source host with status=allocated.
   - Try to launch a new VM using the same GPU → fails with "No valid PCI device available".

  Environment
  ===========
   - OpenStack Version: Caracal
   - PCI Tracking: non-Placement (network required for SR-IOV).

  References
  ===========
  Related to Bug #2077009 but occurs in non-Placement PCI tracking scenarios.

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