Wednesday, 2019-02-27

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openstackgerritAbhishek Kekane proposed openstack/glance master: Add cache-manage utility using v2 API  https://review.openstack.org/62609706:48
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openstackgerritBrian Rosmaita proposed openstack/glance master: Add job definition locations in comment  https://review.openstack.org/63966713:55
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jokke_rosmaita: you around?14:15
rosmaitayep14:15
rosmaitawhat's up?14:15
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jokke_just the librados config thingie. Do you have background why cinder wanted to create that nightmare of relying 3rd party dependency defaults?14:16
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smcginnisWhat's a nightmare?14:17
smcginnisOh, ceph.conf?14:18
rosmaitajokke_: i think the idea is that ceph.conf is a ceph thing, so needs to be wherever the operator has ceph14:18
smcginnisI believe it was because the ceph experts came along and said that's what it should be doing.14:18
jokke_Yeah, so you guys are telling to operators that they need to go and figure out where librados that they happen to use wants to get it configs from instead of explicitly telling "We expect the configs being here, which is the current default"14:19
smcginnisWe don't want to be the ones managing Ceph. That's an external dependency that the operator needs to set up. So hard coding something about the way that is configured wouldn't seem right.14:20
jokke_So my problem with that is, we support range of versions of dependencies. We're literally telling the operators and deployment tool developers, You need to figure our dependencies out as we do not care"14:20
jokke_smcginnis: So librados and the ceph conf is not configuring ceph, it's configuring the access to that ceph on our dependency14:21
jokke_It's like saying We don't want to tell Keystone middleware which keystone endpoint it should look because that's keystone's problem and shouldn't be in our configs14:22
rosmaitawho is our ceph driver maintainer?14:23
smcginnisBut librados may be used by things other than Cinder (and Glance), so like other third party drivers, we leave the configuration of any storage system access up to the operator to take care of. And use reasonable defaults where possible.14:23
jokke_smcginnis: Well we actually have all our backend drivers configured in glance config (apart from ceph that just needs it's own config file)14:25
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jokke_rosmaita: it Fei14:25
jokke_it's14:26
smcginnisYeah, maybe doesn't quite fit the model in the same way in Glance as in Cinder.14:26
jokke_Like Glance is pointing to the current ceph default config dir14:27
jokke_it will not break now, if we merge that change14:27
smcginnisIdeally, with good defaults that match up, operators that do not need to make changes to those configs don't even need to think about it.14:29
jokke_but I can see the joy of say ansible playbook developer who instead of "copy config file here as glance specifies" needs to go and check the range of librados versions we claim to support, figure out where librados wants that config on the specific version installed and go from there14:29
rosmaitajokke_: so our default location for that is /etc/ceph/ceph.conf , that sounds like the real ceph.conf to me14:30
jokke_it's not like they change that every version either, but they did change the default config path, and we changed with them, yet both the new and the older version worked without any special action by operator14:30
jokke_So quick question about oslo.config. The change that is proposed is to change the default to that config option to empty string which gets eventually passed to librados from the constant we have in the driver currently. So will oslo.config just inject that devfault value if user specifically leaves that config value empty (but does declare the actual config option)?14:43
jokke_So specially Cinder side, do you guys even let the Cinder operator specify that or is it just hardcoded to use what ever librados looks for as default location?14:44
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openstackgerritAbhishek Kekane proposed openstack/glance-specs master: Spec Lite: Rethinking our filesystem access  https://review.openstack.org/60558417:05
abhishekkjokke_, ^^^17:05
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openstackgerritAbhishek Kekane proposed openstack/glance-specs master: Spec Lite: Rethinking our filesystem access  https://review.openstack.org/60558417:50
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openstackgerritAbhishek Kekane proposed openstack/glance_store master: Rethinking file system access  https://review.openstack.org/63976518:07
openstackgerritAbhishek Kekane proposed openstack/glance master: Rethinking filesystem access for tasks and staging API  https://review.openstack.org/61125318:12
openstackgerritAbhishek Kekane proposed openstack/glance master: Rethinking filesystem access for tasks and staging API  https://review.openstack.org/61125318:17
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openstackgerritMerged openstack/glance master: Add job definition locations in comment  https://review.openstack.org/63966718:33
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