Public bug reported: This is using microversion 1.28 of the placement API. I will start the process of finding when this went wrong after submitting this bug. I'm guessing at the start of POST to /allocations, but we'll see.
When a POST to /allocations contains multiple consumers each writing some of their allocations to the same consumer, it is possible to "beat" the inventory constraints. In the gabbi test at http://paste.openstack.org/show/724317/ a resource provider is created with an inventory of 2 VCPU. A POST is then made to /allocations with three different consumers, each asking for 1 VCPU. This works, and it should not because we then end up with a usage of 3 VCPU. I found this while trying to chase some issues with consumer generations and allocations and fell into this hole. ** Affects: nova Importance: Medium Status: Triaged ** Tags: placement -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1778743 Title: When POSTing to /allocations with multiple consumers it is possible violate inventory capacity constraints Status in OpenStack Compute (nova): Triaged Bug description: This is using microversion 1.28 of the placement API. I will start the process of finding when this went wrong after submitting this bug. I'm guessing at the start of POST to /allocations, but we'll see. When a POST to /allocations contains multiple consumers each writing some of their allocations to the same consumer, it is possible to "beat" the inventory constraints. In the gabbi test at http://paste.openstack.org/show/724317/ a resource provider is created with an inventory of 2 VCPU. A POST is then made to /allocations with three different consumers, each asking for 1 VCPU. This works, and it should not because we then end up with a usage of 3 VCPU. I found this while trying to chase some issues with consumer generations and allocations and fell into this hole. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1778743/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
