Open Stack

Jay et al-

> And what I'm referring to is doing a single query per "related
> resource/trait placement request group" -- which is pretty much what
> we're heading towards anyway.
> 
> If we had a request for:
> 
> GET /allocation_candidates?
>  resources0=VCPU:1&
>  required0=HW_CPU_X86_AVX2,!HW_CPU_X86_VMX&
>  resources1=MEMORY_MB:1024
> 
> and logged something like this:
> 
> DEBUG: [placement request ID XXX] request group 1 of 2 for 1 PCPU,
> requiring HW_CPU_X86_AVX2, forbidding HW_CPU_X86_VMX, returned 10 matches
> 
> DEBUG: [placement request ID XXX] request group 2 of 2 for 1024
> MEMORY_MB returned 3 matches
> 
> that would at least go a step towards being more friendly for debugging
> a particular request's results.

Well, that's easy [1] (but I'm sure you knew that when you suggested
it). Produces logs like [2].

This won't be backportable, I'm afraid.

[1] https://review.openstack.org/#/c/588350/
[2] http://paste.openstack.org/raw/727165/