Public bug reported: Description ===========
map_instances seemingly hung for hours on a cloud with ~190000 instance records. I think the following fixes are valid (in order of preference): 1) nova_manage should examine the amount of instances that need mapping and make an informed choice about batch size if max_count is not set. 2) max_counts default should be raised. It is currently 50 and I cannot imagine what use case 50 is a good default for. For small clouds the max_count is almost irrelevant, for medium/large clouds 50 is far too low. 3) Update max_count description. It currently reads "Maximum number of instances to map" but I think it should also point out that this is the batch size that instances will be processed in. Steps to reproduce ================== Fire up a large number of instances on a cloud and run map_instances without max_count set: nova-manage --config-file /etc/nova/nova.conf cell_v2 map_instances --cell_uuid <uuid> Expected result =============== The command should complete in a reasonable time (under an hour) Actual result ============= Command runs for over three hours Environment =========== 1. Exact version of OpenStack you are running. See the following list for all releases: http://docs.openstack.org/releases/ If this is from a distro please provide # dpkg -l | grep nova ii nova-api-os-compute 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - OpenStack Compute API frontend ii nova-common 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - common files ii nova-conductor 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - conductor service ii nova-placement-api 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - placement API frontend ii nova-scheduler 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - virtual machine scheduler ii python-nova 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute Python libraries ** Affects: nova Importance: Undecided Status: New -- 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/1742649 Title: map_instances default batch size is too small. Status in OpenStack Compute (nova): New Bug description: Description =========== map_instances seemingly hung for hours on a cloud with ~190000 instance records. I think the following fixes are valid (in order of preference): 1) nova_manage should examine the amount of instances that need mapping and make an informed choice about batch size if max_count is not set. 2) max_counts default should be raised. It is currently 50 and I cannot imagine what use case 50 is a good default for. For small clouds the max_count is almost irrelevant, for medium/large clouds 50 is far too low. 3) Update max_count description. It currently reads "Maximum number of instances to map" but I think it should also point out that this is the batch size that instances will be processed in. Steps to reproduce ================== Fire up a large number of instances on a cloud and run map_instances without max_count set: nova-manage --config-file /etc/nova/nova.conf cell_v2 map_instances --cell_uuid <uuid> Expected result =============== The command should complete in a reasonable time (under an hour) Actual result ============= Command runs for over three hours Environment =========== 1. Exact version of OpenStack you are running. See the following list for all releases: http://docs.openstack.org/releases/ If this is from a distro please provide # dpkg -l | grep nova ii nova-api-os-compute 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - OpenStack Compute API frontend ii nova-common 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - common files ii nova-conductor 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - conductor service ii nova-placement-api 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - placement API frontend ii nova-scheduler 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute - virtual machine scheduler ii python-nova 2:16.0.3-0ubuntu1~cloud0 all OpenStack Compute Python libraries To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1742649/+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
