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#openstack-nova - 2017-05-05
14:20:20 johnthetubaguy yeah, that would work
14:21:16 openstackgerrit Daniel Pawlik proposed openstack/nova master: Added kvm_hidden feature https://review.openstack.org/459753
14:21:16 johnthetubaguy although that implies you would just check "if not context.auth_token"
14:21:25 dansmith or is_internal_request
14:21:30 dansmith or is_nova_admin
14:21:54 mriedem so in the long ago we used to just get the 401 from neutronclient and we didn't handle it, and we got a 500 in the compute api,
14:22:05 mriedem then we handled the 401 from neutron and converted that to a nova 401 to fix the 500
14:22:28 johnthetubaguy then we made the config error back into a 500?
14:22:37 dansmith in the long ago, we had nova-network. period.
14:22:40 mriedem and we get the 401 now if your token expired (came in through the user context or you used nova.conf?)
14:23:01 johnthetubaguy so its not 401 if you got the token from nova.conf right?
14:23:11 johnthetubaguy should be 500 I think
14:23:21 mriedem NeutronAdminCredentialConfigurationInvalid turns it into a 400
14:23:39 johnthetubaguy oh...
14:23:50 mriedem i think this came up in the original review on sahid's change, because sdague thought the 500 was correct
14:24:00 johnthetubaguy that feels like it should be 500
14:24:02 mriedem i.e. if you don't have nova.conf [neutron] configured correctly
14:24:37 mriedem would have to dig back through the git history of time to find out how they changed sean's mind
14:24:42 dansmith so the place I'm seeing this is in instance delete,
14:24:48 dansmith which is failing and breaking the instance state
14:25:10 johnthetubaguy which instance delete path?
14:25:37 dansmith from compute manager while deallocating network
14:26:00 johnthetubaguy oh, it takes a while, so gives the token plenty time to have timed out?
14:26:05 mriedem johnthetubaguy: looks like this is our fault https://review.openstack.org/#/c/312014/
14:26:30 johnthetubaguy mriedem: I probably should have expected that
14:27:04 mriedem https://review.openstack.org/#/c/312014/14/nova/network/neutronv2/api.py
14:27:41 dansmith johnthetubaguy: I dunno why it fails, it's from heat so heat might've gotten its token a long time ago or something
14:28:24 johnthetubaguy dansmith: might be the trust based token has a shorter lifetime
14:29:08 johnthetubaguy dansmith: the more general fix for this has merged already of course, you configure a service token to stop that expiry happening
14:29:44 dansmith yeah
14:30:02 dansmith can't backport that though
14:31:10 johnthetubaguy so us triggering a 401 just changes the error code from 400, rather than make the delete work?
14:31:16 johnthetubaguy or is this something deeper?
14:31:31 johnthetubaguy heat does a retry, which fixes things?
14:33:20 dansmith no, the instance is state locked at that point for some reason
14:33:26 dansmith like, you can't retry the delete
14:33:32 dansmith have to get more details on why
14:33:53 dansmith anyway, my point is, I don't think that fixing what is in that patch actually helps me out of the box
14:34:19 dansmith I'm guessing it's still task_state=deleting or something
14:34:57 johnthetubaguy ah, dang
14:35:31 johnthetubaguy would have to rollback the task state, I guess the instance might go into the ERROR state (or should)
14:39:57 mriedem dansmith: the service token thing is in ocata
14:39:58 mriedem for neutron
14:40:32 mriedem unless you're talking about backporting to like, kilo
14:40:40 dansmith johnthetubaguy: looks like it goes into error, but maybe not resetting the task_state or something
14:40:48 dansmith mriedem: yeah, before ocata I think
14:41:13 mriedem failures in terminate_instance in the compute manager would hit @reverts_task_state
14:42:37 dansmith should, yeah, which is why I'm asking for detail from the bug filer
14:43:18 dansmith it might be that heat just doesn't handle the failure but the instance is actually delete-able, which is what I'm trying to find out
14:44:39 mriedem ha, reading jay's 2nd set of slides, disk_available_least, that's fun
14:44:44 mriedem compute.free_disk_gb
14:44:49 mriedem compute.disk_available_least
14:44:51 mriedem duh
14:45:30 openstackgerrit melanie witt proposed openstack/nova master: Fix unit test exception KeyErrors https://review.openstack.org/462764
14:45:31 openstackgerrit melanie witt proposed openstack/nova master: Make NovaException format errors fatal for tests https://review.openstack.org/411615
14:56:11 bauzas hah, jay isn't around and I have a question for him https://review.openstack.org/#/c/460798/6
14:58:44 cdent bauzas: there's been discussion of that in the comments on the earlier patches
14:58:58 cdent the basic answer is that the code is going to evolve to one query over a series of patches
14:59:04 cdent (including traits)
14:59:43 cdent bauzas: in other words, it's important to read all the comments on all the patchsets in the entire stack to get a good idea of what's going on
14:59:49 cdent that's a pain, but that's how it is
14:59:50 bauzas cdent: I see PS2 comments
15:00:07 cdent yeah, look elsewhere in the stack too
15:00:32 cdent I had the same concerns and got rather confused because I was expecting things to be more complete in one patch, but that's not the path being taken
15:01:37 bauzas cdent: okay, I just think he missed a verification
15:01:54 bauzas cdent: about returning RPs having all the RCs
15:02:08 cdent yeah, that maybe, but some of the verification is intentionally being done later
15:02:12 cdent (in the stack)
15:02:16 bauzas that's the problem when you duplicate code
15:02:26 cdent yes, my complaint exactly
15:02:27 bauzas you reintroduce bugs
15:02:32 cdent but jay's aware of it
15:09:14 openstackgerrit Dan Smith proposed openstack/nova master: WIP: De-complicate some of the instance delete path https://review.openstack.org/458636
15:09:15 openstackgerrit Dan Smith proposed openstack/nova master: Move to proper target_cell calling convention https://review.openstack.org/458634
15:09:19 openstackgerrit Dan Smith proposed openstack/nova master: DNM: Canary test against multi-cell devstack https://review.openstack.org/458537
15:09:19 openstackgerrit Dan Smith proposed openstack/nova master: Make target_cell() yield a new context https://review.openstack.org/458635
15:12:06 bauzas cdent: okay confirmed that we need the HAVING count() for RCs, because we could return RPs not having the asked RC in their inventories
15:12:37 cdent mriedem, jroll: have we lost jroll on this https://blueprints.launchpad.net/nova/+spec/custom-resource-classes-in-flavors or is he staying in view?
15:14:36 mriedem cdent: jay owns it now
15:14:39 melwitt mriedem, dansmith, johnthetubaguy: did anyone want to do a hangout to get an overview of the quotas patches to help make review easier?
15:14:52 cdent thanks mriedem
15:15:20 mriedem melwitt: i probably could in awhile, but wanted to get started on this chinese business visa paperwork before leaving for a week
15:15:28 mriedem b/c i imagine this is going to be worse than reviewing those quotas patches :)
15:16:09 melwitt heh, okay
15:18:54 openstackgerrit Roman Podoliaka proposed openstack/nova master: neutron: re-raise 401 for a non-admin client https://review.openstack.org/422696
15:22:27 bauzas cdent: FWIW, I tried to explain the problem with the current method only accepting one RC
15:22:57 bauzas of course, we can merge that change as it is, but I think it will probably need some modifications later
15:23:00 bauzas dansmith: ^
15:24:12 cdent "needing some modification later" is what I was trying to explain above. That's expected.
15:24:37 dansmith bauzas: tbh, I'm not sure I see a ton of value in complicating these methods, which are effectively wrappers around sql statements, with lots of conditional behavior
15:25:08 bauzas dansmith: the problem is not with that method, the problem is that that method executes the code
15:25:32 dansmith um, what?
15:25:46 bauzas dansmith: I tried to explain the problem in the last comment
15:25:47 dansmith executing code is usually what I'm looking for when shopping for a method
15:26:08 dansmith I've read your comments
15:26:11 bauzas dansmith: say that I want to ask placement for two resource amounts, each of them being for a specific RC
15:26:44 bauzas then I would need to verify both RCs separately, instead of using the DBRM execution plan to make my single query faster
15:27:02 bauzas and we *already* do that
15:27:18 bauzas the SQL statement is just below
15:27:47 bauzas also, the provided test is frankly positive

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