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#openstack-nova - 2018-01-30
22:46:54 edleafe mriedem: well, about a year or so I think
22:47:04 mriedem not knowing what we'd be doing with these things several releases later
22:47:19 efried mriedem: We're not even arguing the decision to implement generation a certain way. I don't think anyone has a problem with that.
22:47:26 edleafe there was the opaque marker (etag) proponents, and the deterministic marker (generation) camp
22:47:28 mriedem a year would have been the ATL PTG and it seems older than that, at least BCN
22:48:07 mriedem so next step is....documenting how generations work
22:48:08 mriedem ?
22:48:29 efried mriedem: Yeah - what's at issue is whether that implementation is supposed to be known by consumers of the API, or whether it's supposed to be opaque.
22:49:13 mriedem sorry, i haven't followed this debate the last several times it's come up, but what's the issue? that a client can get a generation that skips increments?
22:49:21 mriedem like t1 i get gen 1, t2 i get gen 3?
22:50:22 efried Not really. The issue is, can the consumer count on a) generation starts at 0 when you create a new provider; and b) generation increments by 1 when you successfully update something associated with a provider.
22:51:06 efried Point being, as currently implemented, yes they can, but do we want that to be explicitly part of the API, or do we want it to be opaque and you shouldn't introspect the generation?
22:52:14 edleafe mriedem: IOW, do we want to require that each call to modify a RP is first preceded by a GET to find the current generation?
22:52:24 efried no, not at all.
22:52:34 efried that would not be necessary at all.
22:52:59 mriedem if the generation the caller passes is in conflict, they get a 409, get the latest generation, merge the request and try again
22:53:17 mriedem why would the caller need to know that the generation increments by 1?
22:53:29 edleafe efried: how can they pass a generation if they can't assume previous+1?
22:54:01 mriedem efried: fwiw i think "can the consumer count on a) generation starts at 0 when you create a new provider; and b) generation increments by 1 when you successfully update something associated with a provider." is fine
22:54:04 efried edleafe: Because the response from any update includes the new generation. Since the update was atomic, you know that the payload in the response corresponds to that generation.
22:54:41 efried And I can keep my cache consistent with that information.
22:55:38 efried And the problem arises any time there's an update from whose response I can't glean the new generation. Like DELETE inventory, allocations, traits (and someday maybe aggregates)
22:56:08 efried mriedem: Duly noted. I think your vote splits us clean down the middle.
22:56:59 mriedem consider it a very limp vote
22:57:09 efried If I'm remembering right, we have mriedem cdent edleafe on one side, and efried dansmith jaypipes on the other.
22:57:44 mriedem well, i also agree that "you shouldn't introspect the generation"
22:57:48 edleafe and IIRC, it was jaypipes advocating for the gen+1 back in the day
22:58:03 mriedem like i said above, as a client, try the request, if it fails, fetch the latest thing, merge the result client side and try again
22:58:16 edleafe for the very reason that you *could* assume those things
22:58:28 efried edleafe: Not to put words in his mouth, but he may have been advocating the monotonic integer implementation without advocating that that implementation be transparent to the API consumer.
22:58:54 edleafe efried: that would have no advantage over something like etag
22:59:01 mriedem i sure hope this is blocking the most important thing that anyone is ever going to be working on...because it sures feels like it
22:59:09 edleafe it was that advantage that was the main argument
23:00:15 edleafe mriedem: it's just that we went through this a while ago, and now it's being dragged up again for the very reason it was chosen in the first place
23:01:55 mriedem fair
23:01:57 mriedem but,
23:02:02 mriedem it's 5:02 and i'm out of here suckas
23:02:08 efried later mriedem
23:02:15 openstackgerrit Merged openstack/nova master: Cleanup redundant want_version assignment. https://review.openstack.org/535801
23:02:25 openstackgerrit Merged openstack/nova master: Add debug output for selected page size https://review.openstack.org/530662
23:02:36 openstackgerrit Merged openstack/nova master: api-ref: Fix parameter type in server-migrations.inc https://review.openstack.org/536293
23:03:04 efried edleafe, if the decision was made definitively after lots of discussion, how is it that there's such contention now, even among folks who were apparently part of the decision?
23:03:54 efried I would have expected those people to grumble about how it wasn't what they would have chosen, but it's what we decided on, and we'd have a path forward.
23:05:15 edleafe efried: that's hard for me to understand. Both cdent and I were arguing for etags, and now we're both saying "well, we got monotonically increasing integers, so let's use 'em!"
23:05:43 efried And the folks who argued for monotonic ints are saying they should be opaque?
23:06:02 edleafe weird, huh?
23:06:11 efried fkinaye
23:06:39 openstackgerrit Merged openstack/nova master: Merge server create schema for availability zone extension https://review.openstack.org/451331
23:06:49 openstackgerrit Merged openstack/nova master: Merge server create for availability zone extension https://review.openstack.org/502574
23:07:02 openstackgerrit Merged openstack/nova master: [placement] Add functional tests for resource class API https://review.openstack.org/524506
#openstack-nova - 2018-01-31
00:29:36 openstackgerrit Merged openstack/nova master: [placement] Add sending global request ID in delete (3) https://review.openstack.org/526557
00:29:56 openstackgerrit Merged openstack/nova master: Avoid suspending guest with attached vGPUs https://review.openstack.org/535693
00:32:28 openstackgerrit Takashi NATSUME proposed openstack/nova master: Transform live_migration_post_dest notification https://review.openstack.org/469784
00:36:51 openstackgerrit Merged openstack/nova master: Handle TZ change in iso8601 >=0.1.12 https://review.openstack.org/535700
00:44:27 openstackgerrit Takashi NATSUME proposed openstack/nova master: [placement] Separate API schemas (resource_provider) https://review.openstack.org/528629
00:45:46 openstackgerrit Takashi NATSUME proposed openstack/nova master: Remove unnecessary arguments in notification methods https://review.openstack.org/535599
01:03:28 openstackgerrit Nakanishi Tomotaka proposed openstack/nova master: Use Placement API to check resource usage https://review.openstack.org/528953
01:13:05 openstackgerrit Zhenyu Zheng proposed openstack/nova master: Invalid query parameter could lead to HTTP 500 https://review.openstack.org/539164
01:35:49 mriedem_afk woot vgpu patch finally merged https://review.openstack.org/#/c/535693/
01:37:22 mriedem_afk alex_xu: want to hit this release note for versioned notification transformation for queens? https://review.openstack.org/#/c/518018/
01:42:45 Spazmotic how are you awake even more than me
01:43:03 mriedem it's 7:45
01:43:12 Spazmotic ..so it is
01:43:21 Spazmotic sorry.. third shift.. sometimes my hours don't make sense
01:43:25 mriedem exercise, vegetables and clean living
01:44:26 Spazmotic That's my lifestyle as well the past year.. I respect it:)
01:45:20 Spazmotic Nowadays I use my Racker picture on my badge as inspiration.. have lost 170lbs. But still.. Third Shift hours and having a fiancee in Korea make my hours ridiculous hehe
01:46:10 openstackgerrit Matt Riedemann proposed openstack/nova master: Implement get_traits() for the ironic virt driver https://review.openstack.org/532288
01:46:10 openstackgerrit Matt Riedemann proposed openstack/nova master: Add get_traits() method to ComputeDriver https://review.openstack.org/532290
01:46:11 openstackgerrit Matt Riedemann proposed openstack/nova master: Convert driver supported capabilities to compute node provider traits https://review.openstack.org/538498
01:46:11 openstackgerrit Matt Riedemann proposed openstack/nova master: Add functional tests for virt driver get_traits() method https://review.openstack.org/538047
01:46:12 bkero- That's a crazy schedule. That must have very little overlap.
01:46:58 Spazmotic It could be worse.. The good thing is that Korea daytime and third shift US are pretty lined up, but right now outside of DST the time diff is a little mor difficult.
01:47:38 bkero- gotta get those remote working privs
01:47:43 bkero- then korea
01:48:07 mriedem efried: looks like the nrp series has a merge conflict starting here now https://review.openstack.org/#/c/521098/30
01:48:35 Spazmotic Haha I tried.. something about not having a presence in South Korea so they cannot have a remote worker there or something
01:48:50 bkero- Yeah, it's hard to ask for permission
01:49:04 mriedem australia
01:49:07 mriedem rax is there
01:49:12 mriedem then at least the tz is closer
01:49:17 Spazmotic Well also HKG
01:49:21 Spazmotic But we are settling for bringing her here
01:49:24 Spazmotic Just waiting on VISA stuff
01:49:28 mriedem don't tell trump
01:49:30 Spazmotic dunno why i thought that was an anagram
01:49:31 Spazmotic it's early
01:49:43 Spazmotic Yeah it's totes hush hush, just letting you openstack fellows know.. DON'T TELL TRUMP
01:50:14 mriedem he'd actually be in bed eating by now if it weren't for some speech he has to give tonight
01:51:17 Spazmotic I'd imagine he's still doing that thing
01:51:25 Spazmotic Just speech from bed with giant slippers
01:51:33 Spazmotic Glow of his own TV show shining on his face or something, and some chicken in a bucket.
01:51:48 Spazmotic Swinging a drumstick around
01:56:36 mriedem alex_xu: looks like your allocation candidates + traits gabbi tests are intermittently failing http://logs.openstack.org/10/539310/1/check/nova-tox-functional/a6ba562/job-output.txt.gz#_2018-01-30_21_02_40_414709
02:00:22 mriedem https://bugs.launchpad.net/nova/+bug/1746388
02:00:23 openstack Launchpad bug 1746388 in OpenStack Compute (nova) "allocation candidates with invalid traits negative functional tests are intermittently failing" [High,Confirmed]
02:01:15 mriedem alex_xu: ah nevermind efried found the issue https://review.openstack.org/#/c/537351/3/nova/api/openstack/placement/util.py
02:50:12 openstackgerrit Hironori Shiina proposed openstack/nova master: virt/ironic: Implement rescue and unrescue https://review.openstack.org/416487
02:58:30 openstackgerrit Tetsuro Nakamura proposed openstack/nova master: Add unit tests for EmulatorThreadsTestCase https://review.openstack.org/538699
02:58:31 openstackgerrit Tetsuro Nakamura proposed openstack/nova master: Not use thread alloc policy for emulator thread https://review.openstack.org/538700

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