Reviewed: https://review.openstack.org/541246 Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=ea6757092df85b6cce38980ae5b7f54b76657e01 Submitter: Zuul Branch: master
commit ea6757092df85b6cce38980ae5b7f54b76657e01 Author: Surya Seetharaman <[email protected]> Date: Tue Feb 6 12:36:50 2018 +0100 Make bdms querying in multi-cell use scatter-gather and ignore down cell This patch makes the querying of bdms from multiple cells in the _get_instance_bdms_in_multiple_cells function of extended_volumes use scatter_gather_cells thus making the process, parallel. It also adds warnings in case a cell is not available; which the operator can later tweak, if an exception needs to be raised. So for now, cells that are not reachable are ignored and it proceeds to the next cell. Change-Id: I0e05eb1e2ad37962968b79100bf4a96c7d6ddd8f Closes-Bug: #1747650 ** Changed in: nova Status: In Progress => Fix Released -- 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/1747650 Title: Make bdms querying in multiple cells use scatter-gather Status in OpenStack Compute (nova): Fix Released Bug description: Currently the "_get_instance_bdms_in_multiple_cells" function in extended_volumes runs sequentially and this affects the performance in case of large deployments (running a lot of cells) : https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/extended_volumes.py#L50 So it would be nice to use the scatter_gather_cells function to do this operation in parallel. Also apart from the performance scaling point of view, in case connection to a particular cell fails, it would be nice to have sentinels returned which is done by the scatter_gather_cells function. This helps when a cell is down. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1747650/+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
