Octavia uploads a qcow2 image to glance with a property hw_architecture=x86_64 but in OSP18, placement denies the creation of a VM:

We can reproduce this behavior in an install_yamls env + 1 edpm compute:

$ openstack image set --property hw_architecture=x86_64 cirros

$ openstack server create --flavor m1.small --image cirros --nic net-id=private test2 --security-group basic --wait
Error creating server: test2

In the placement logs:

2024-04-08 13:47:46.492 14 DEBUG placement.requestlog [req-79d43bad-00ad-4faf-9eba-13076214c905 req-5170e778-675e-4919-a0f2-a7049b02c127 - - - - - -] Starting request: 10.217.1.47 "GET /allocation_candidates?limit=1000&resources=DISK_GB%3A2%2CMEMORY_MB%3A512%2CVCPU%3A1&root_required=COMPUTE_IMAGE_TYPE_QCOW2%2CHW_ARCH_X86_64%2C%21COMPUTE_STATUS_DISABLED" {}call{} /usr/lib/python3.9/site-packages/placement/requestlog.py:55
2024-04-08 13:47:46.658 14 DEBUG placement.objects.research_context [req-79d43bad-00ad-4faf-9eba-13076214c905 req-5170e778-675e-4919-a0f2-a7049b02c127 175e41811c194d5c8fd21dce275ff937 068c352ea62c40b1b6f0782e9dcb6609 - - default default] found no providers satisfying required traits: {'COMPUTE_IMAGE_TYPE_QCOW2', 'HW_ARCH_X86_64'} and forbidden traits: {'COMPUTE_STATUS_DISABLED'} _process_anchor_traits /usr/lib/python3.9/site-packages/placement/objects/research_context.py:243
2024-04-08 13:47:46.661 14 INFO placement.requestlog [req-79d43bad-00ad-4faf-9eba-13076214c905 req-5170e778-675e-4919-a0f2-a7049b02c127 175e41811c194d5c8fd21dce275ff937 068c352ea62c40b1b6f0782e9dcb6609 - - default default] 10.217.1.47 "GET /allocation_candidates?limit=1000&resources=DISK_GB%3A2%2CMEMORY_MB%3A512%2CVCPU%3A1&root_required=COMPUTE_IMAGE_TYPE_QCOW2%2CHW_ARCH_X86_64%2C%21COMPUTE_STATUS_DISABLED" status: 200 len: 53 microversion: 1.36

It seems that it is a regression between OSP17.1 and OSP18