The nova.compute.claims Module

Claim objects for use with resource tracking.

class Claim(context, instance, tracker, resources, overhead=None, limits=None)

Bases: nova.compute.claims.NopClaim

A declaration that a compute host operation will require free resources. Claims serve as marker objects that resources are being held until the update_available_resource audit process runs to do a full reconciliation of resource usage.

This information will be used to help keep the local compute hosts’s ComputeNode model in sync to aid the scheduler in making efficient / more correct decisions with respect to host selection.

abort()

Compute operation requiring claimed resources has failed or been aborted.

disk_gb

memory_mb

numa_topology

class MoveClaim(context, instance, instance_type, image_meta, tracker, resources, overhead=None, limits=None)

Bases: nova.compute.claims.Claim

Claim used for holding resources for an incoming move operation.

Move can be either a migrate/resize, live-migrate or an evacuate operation.

abort()

Compute operation requiring claimed resources has failed or been aborted.

create_migration_context()

disk_gb

memory_mb

numa_topology

class NopClaim(*args, **kwargs)

Bases: object

For use with compute drivers that do not support resource tracking.

abort()

disk_gb

memory_mb