Public bug reported: The ComputeNode.local_gb_used value is set in the ResourceTracker._update_usage() method:
https://github.com/openstack/nova/blob/eb4f65a7951e921b1cd8d05713e144e72f2f254f/nova/compute/resource_tracker.py#L934 Based on: 1. root_gb in the flavor 2. any disk overhead from the virt driver 3. ephemeral_gb in the flavor It was added in this change in Grizzly: https://review.openstack.org/#/c/13182/ However, the RT does not take into account swap disk, which was fixed in the DiskFilter in Icehouse: https://review.openstack.org/#/c/51323/ But is still missing the swap (MB) calculation for local_gb_used in the ResourceTracker (after all these years). Given how latent this bug is, it's low priority to fix it, and really long-term we should probably change the ResourceTracker to report usage from the placement API since that correctly accounts for root_gb/ephemeral_gb/swap (mb) when posting DISK_GB allocations to placement. ** Affects: nova Importance: Low Status: Triaged ** Tags: compute resource-tracker -- 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/1782386 Title: compute node local_gb_used does not include swap disks Status in OpenStack Compute (nova): Triaged Bug description: The ComputeNode.local_gb_used value is set in the ResourceTracker._update_usage() method: https://github.com/openstack/nova/blob/eb4f65a7951e921b1cd8d05713e144e72f2f254f/nova/compute/resource_tracker.py#L934 Based on: 1. root_gb in the flavor 2. any disk overhead from the virt driver 3. ephemeral_gb in the flavor It was added in this change in Grizzly: https://review.openstack.org/#/c/13182/ However, the RT does not take into account swap disk, which was fixed in the DiskFilter in Icehouse: https://review.openstack.org/#/c/51323/ But is still missing the swap (MB) calculation for local_gb_used in the ResourceTracker (after all these years). Given how latent this bug is, it's low priority to fix it, and really long-term we should probably change the ResourceTracker to report usage from the placement API since that correctly accounts for root_gb/ephemeral_gb/swap (mb) when posting DISK_GB allocations to placement. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1782386/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
