Thursday, 2019-05-16

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openstackgerritChris Dent proposed openstack/placement master: Enhance debug logging in allocation candidate handling  https://review.opendev.org/65952210:24
openstackgerritChris Dent proposed openstack/placement master: WIP: Try to get perfload api log htmlified  https://review.opendev.org/65952510:41
openstackgerritChris Dent proposed openstack/placement master: Enhance debug logging in allocation candidate handling  https://review.opendev.org/65952210:45
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openstackgerritChris Dent proposed openstack/placement master: Allow [A-Z0-9_-]{1,64} for request group suffix  https://review.opendev.org/65741912:32
openstackgerritChris Dent proposed openstack/placement master: WIP: Allow RequestGroups without resources  https://review.opendev.org/65751012:32
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efriedcdent: We held a brief placement meeting on Monday. Do you want me to summarize in the nova meeting?13:53
cdentif you like13:53
efriedight13:56
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cdentedleafe: can you weigh in on https://etherpad.openstack.org/p/placement-ptg-train-rfe-voter and https://review.opendev.org/#/c/657419/ please and thank you14:37
cdentmriedem: you too14:37
edleafecdent: added to my queue14:37
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cdentI'm trying a thing. I've hit 8 hours. See you tomorrow.16:17
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-openstackstatus- NOTICE: Gerrit is being restarted to add gitweb links back to Gerrit. Sorry for the noise.17:37
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edleafeefried: when you have a minute, can you explain the difference between an anchor provider and a root provider in this method? https://github.com/openstack/placement/blob/master/placement/objects/resource_provider.py#L33720:41
mriedemone goes in the ground, one goes in the water20:51
mriedemhar har yar mateys!20:51
efriednice20:51
efriededleafe: An anchor provider is the root of the tree with which the sharing provider is associated in a particular allocation request.20:52
edleafeso the anchor is the root??20:52
edleafeThen what is the root provider?20:53
efriedThe `rp_ids` params will be IDs of sharing providers. The roots of those sharing providers are *not* something we care about.20:53
efriedIn practical nova terms, if rp_ids is a list of NFSes and cephs, associated by aggregate with compute nodes, the method will return the root provider IDs of the compute nodes.20:54
edleafeI guess the sentence that is most confusing is "The sharing provider may or may not itself be part of a tree; in either20:56
edleafe    case, an entry for this root provider is included in the result.20:56
efriedyes, I think that comment is wrong.20:56
efriedI think /root/d and it's correcter20:56
efriedbecause I'm pretty sure we don't return the root of the sharing provider's tree.20:57
edleafeOK, so all that needs to return is the compute node RPs that are associated with the supplied shared ids20:57
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efriedcorrect.20:58
edleafethanks20:58
efriedhm, I don't actually see where we're resolving to root provider IDs.20:58
efriedoh, there it is.20:58
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edleafeOr it could just be this:21:10
edleafeMATCH (anchor:RESOURCE_PROVIDER)-[*]->()-[:ASSOCIATED]->(shared:RESOURCE_PROVIDER)21:10
edleafeWHERE shared.uuid in %s21:10
edleafeRETURN anchor, shared21:10
edleafe:)21:10
efriededleafe: return anchor.root_provider_[uu]id, but yeah.21:23
edleafeefried: actually, that would be redundant. The first element of the relation is the root (called 'anchor' above). It's UUID is part of the returned result. There is no explicit parent_ or root_ uuids; that's all expressed in the relations21:25
efriedokay21:25
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