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openstackgerrit | Nguyen Hai proposed openstack/glance-specs master: import zuul job settings from project-config https://review.openstack.org/593502 | 01:11 |
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openstackgerrit | Liang Fang proposed openstack/python-glanceclient master: Specify image size to avoid glance backend resize https://review.openstack.org/602577 | 01:35 |
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AJaeger | nguyenhai: seems jokke_ is on FTO, so we have to wait with 593502 until he's back - he's the only one that can approve | 06:36 |
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rosmaita | Courtesy meeting reminder on #openstack-meeting-4: flwang1, jokke_, mclaren, mfedosin, nikhil_k, rosmaita, GB21, bpoulos, harshs, abhishekk, dshakhray, kairat, alex_bash, smcginnis, arcolife, Brin, Roamer`, andybotting | 13:58 |
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rosmaita | imacdonn: check the glance meeting log for today | 15:02 |
rosmaita | http://eavesdrop.openstack.org/meetings/glance/2018/glance.2018-09-20-14.00.log.html | 15:02 |
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openstackgerrit | Merged openstack/glance master: Rename async package to async_ https://review.openstack.org/582613 | 15:18 |
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rosmaita | imacdonn: here's a start for you, feel free to use it in a patch to master: https://etherpad.openstack.org/p/glance-imacdonn-relnote | 15:27 |
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rosmaita | jokke_: ^^ | 15:28 |
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LiangFang | Could anybody help to review:https://review.openstack.org/#/c/602580/ and https://review.openstack.org/#/c/602577/? | 16:02 |
LiangFang | this is to specify image size to avoid glance backend resize when uploading volume to glance | 16:03 |
LiangFang | these 2 patches cowork with a patch of cinder to finish this thing | 16:04 |
LiangFang | things is that: if we don't specify the image size, the glace backend(e.g. ceph) don't know the size at the initial phase. So it need to resize the image (inside ceph or any backend storage system) when it received every chunk of data | 16:08 |
imacdonn | LiangFang: Is there a spec for this > | 16:08 |
LiangFang | this is a known issue, and a bug related with it | 16:10 |
LiangFang | in glance_store, the drivers(e.g. rbd.py) of every backend are marking this as a known issue | 16:12 |
LiangFang | Comments in the code like:# If the image size provided is zero we need to do | 16:14 |
LiangFang | # a resize for the amount we are writing. This will | 16:14 |
LiangFang | # be slower so setting a higher chunk size may | 16:14 |
LiangFang | # speed things up a bit. | 16:14 |
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imacdonn | LiangFang: I don't disagree with the desire, but I think any API change should require a spec | 16:18 |
imacdonn | (probably a spec-lite would do for this, but I'm not sure) | 16:19 |
imacdonn | There seems to have been a move away from using HTTP headers to convey things like that .... the spec review would decide things like that | 16:20 |
LiangFang | thanks for your comment | 16:24 |
imacdonn | It is mentioned at https://docs.openstack.org/glance/14.0.0/glanceapi.html | 16:26 |
LiangFang | In fact this issue had been blocked years, and it seems no other better way to convey the info "image size" | 16:26 |
imacdonn | I think the new way is in the POST data, rather than in the headers | 16:32 |
imacdonn | like ... curl -g -i -X POST -H 'Accept-Encoding: gzip, deflate' -H 'Accept: */*' -H 'User-Agent: python-glanceclient' -H 'Connection: keep-alive' -H 'X-Auth-Token: xxx' -H 'Content-Type: application/json' -d '{"min_disk": 123, "container_format": "bare", "disk_format": "raw", "name": "foo"}' http://glance_host:9292/v2/images | 16:33 |
imacdonn | I think it should be conveyed the same way as "min_disk" | 16:34 |
LiangFang | so there will be a seperate request? | 16:35 |
imacdonn | see what the core team says, but IMO it should have a spec[-lite], where the approach would be defined and approved, then you can implement against it | 16:35 |
imacdonn | I'm working one though the process myself at the moment | 16:36 |
imacdonn | smcginnis: let me know if you disagree | 16:36 |
LiangFang | OK, that's fine | 16:37 |
smcginnis | imacdonn: You're probably right, but I would like input from the other cores that have more history. | 16:41 |
imacdonn | ack | 16:41 |
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