Director failed to deploy a overcloud node with "No valid host was found"

Issue

• openstack overcloud deploy fails with "No valid host was found", and director does not deploy the required baremetal instance.
• We see the following log from nova-scheduler in our director node, which shows that nova failed to pick up a baremetal node to deploy the instance becaise pf DiskFilter

INFO nova.filters ... Filtering removed all hosts for the request with instance ID '49df134e-7203-4634-9a35-d7a03dd78876'. Filter results: ['RetryFilter: (start: 1, end: 1)', 'TripleOCapabilitiesFilter: (start: 1, end: 1)', 'ComputeCapabilitiesFilter: (start: 1, end: 1)', 'AvailabilityZoneFilter: (start: 1, end: 1)', 'RamFilter: (start: 1, end: 1)', 'DiskFilter: (start: 1, end: 0)']