9268bc36a3
PCI devices which are allocated to instances can be removed from the [pci]device_spec configuration or can be removed from the hypervisor directly. The existing PciTracker code handle this cases by keeping the PciDevice in the nova DB exists and allocated and issue a warning in the logs during the compute service startup that nova is in an inconsistent state. Similar behavior is now added to the PCI placement tracking code so the PCI inventories and allocations in placement is kept in such situation. There is one case where we cannot simply accept the PCI device reconfiguration by keeping the existing allocations and applying the new config. It is when a PF that is configured and allocated is removed and VFs from this PF is now configured in the [pci]device_spec. And vice versa when VFs are removed and its parent PF is configured. In this case keeping the existing inventory and allocations and adding the new inventory to placement would result in placement model where a single PCI device would provide both PF and VF inventories. This dependent device configuration is not supported as it could lead to double consumption. In such situation the compute service will refuse to start. blueprint: pci-device-tracking-in-placement Change-Id: Id130893de650cc2d38953cea7cf9f53af71ced93 |
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| .. | ||
| client | ||
| filters | ||
| weights | ||
| __init__.py | ||
| host_manager.py | ||
| manager.py | ||
| request_filter.py | ||
| rpcapi.py | ||
| utils.py | ||