Deleting a BareMetalHost where the .spec.bmc.address is unreachable takes nearly an hour. It never starts inspection, so is different than the bug where deleting after inspection started blocks forever. This issue appears to be related to how the BMO interacts with ironic, since the BMO logs show regular logs of "could not update maintenance in ironic, busy".

This was discovered as part of a test case where the address is intentionally unreachable, but in the past this happened within a reasonable duration rather than close to an hour.

The BareMetalHost was created by the ACM siteconfig operator, though the issue does not seem directly related.

    BMO included in OCP 4.21.0-ec.3

100%    

    1. Create a BMH with .spec.bmc.address pointing to an unreachable IP
    2. Delete the BMH once registered
    3. Observe the eventual removal of the BMH, though only after close to an hour
    

    BMH takes nearly an hour to be deleted

    BMH deleted within a couple minutes at most