On 8/27/20 11:56, Tim Bell wrote:

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On 27 Aug 2020, at 19:47, its-openstack@zohocorp.com As you see from mentioned table. when user1,user2, has instance quota of 2 and when user1 has created 2 instance, user2 unable to create instance. but user3 able to create only 1 more instance, user 4 has no quota applied so project quota 10 will be applied and he can create 10 instance.

the quota is applied to each user but not tracked for each user, so this defeats the purpose of per user quota.

Please help us with resolving this issue.

Hi, I tried your scenario in devstack and found a bug in the [lack of] scoping for per-user quotas [1] and have a proposed a patch (still needs test coverage): https://review.opendev.org/748550 If you could please try out this patch and let me know whether you find any issues, it would be appreciated. With this patch, I got the following result with your same scenario (first user has instances quota of 2, second user has 2, third user has 3, last user has no per-user quota, project has 10): $ nova list --fields name,user_id,created --sort created_at:asc +--------------------------------------+-------+----------------------------------+----------------------+ | ID | Name | User Id | Created | +--------------------------------------+-------+----------------------------------+----------------------+ | 5a52f400-2bef-4f00-add4-df69b6ac195f | one | e630b64070f042e98381bb7f6be9919c | 2020-08-27T21:41:06Z | | 800c7673-0846-4c2e-a502-2d8db7ceab40 | two | e630b64070f042e98381bb7f6be9919c | 2020-08-27T21:42:07Z | | af9b35ce-6ba9-4657-aacf-aedb1915ce9a | three | b34b2b234e0545b9a54ce7f63d9b116e | 2020-08-27T23:14:36Z | | d83e9c56-ccc5-4d65-bb81-ac3be3a8f575 | four | b34b2b234e0545b9a54ce7f63d9b116e | 2020-08-27T23:16:24Z | | 56aa06d2-2d1f-49e4-a314-e2e06f68fef0 | five | 3278d32e38534016963e457f6c9d07d7 | 2020-08-27T23:16:59Z | | 38e84ebb-fb88-4e39-b5fe-32bbcdd5f062 | six | 3278d32e38534016963e457f6c9d07d7 | 2020-08-27T23:17:19Z | | 7376788f-c51a-4a6d-be91-c14bb71b3541 | seven | 3278d32e38534016963e457f6c9d07d7 | 2020-08-27T23:17:37Z | | f072d745-c37f-493d-8fa8-7dc83d520539 | eight | 06f1a9d74d214fa1b352d4a3f41e3421 | 2020-08-27T23:18:21Z | | 58688387-8f8c-4b60-acac-40d11a8ca5b9 | nine | 06f1a9d74d214fa1b352d4a3f41e3421 | 2020-08-27T23:18:37Z | | 1a25e99f-2bfe-42ea-b1b3-e88a78b11293 | ten | 06f1a9d74d214fa1b352d4a3f41e3421 | 2020-08-27T23:18:53Z | +--------------------------------------+-------+----------------------------------+----------------------+ And I was not able to create a fourth instance with the last user because that would exceed the total project quota of 10. Also, be careful with how you assign per-user quota in nova. The first time I tried your scenario, I did not make sure to use user_id UUID instead of name. The per-user quotas will not work properly if you do not specify the user_id as a UUID, example: $ nova quota-update --user 3278d32e38534016963e457f6c9d07d7 --instance 3 518c0eaec2754217bee6b67a1ec6f884 where the first UUID is the user_id and the second UUID is the project_id.

I had understood that per-user quota was deprecated now.

Have you had a look at creating dedicated per-usret projects with assigned quotas ?

Tim is correct in that per-user quota is not encouraged because when we move to unified limits in nova [2], they will be removed [3]. If you are able to use a dedicated project per user instead of using per-user quotas, that is a better approach. Hope this helps, -melanie [1] https://bugs.launchpad.net/nova/+bug/1893284 [2] https://review.opendev.org/#/q/topic:bp/unified-limits-nova [3] https://docs.openstack.org/nova/latest/admin/quotas.html#view-and-update-quo...