Comment 0 for bug 1592043

Since merging upper constraints 1.4.0 into upper-constraints, the multinode grenade jobs are hitting a nearly 1/3 failure rate on boot from volume scenarios around volume setup. This would be on Newton code using Mitaka configs.

Representative failures are of the following form: http://logs.openstack.org/71/327971/5/gate/gate-grenade-dsvm-neutron-multinode/f2690e3/logs/new/screen-n-cpu.txt.gz?level=WARNING#_2016-06-13_15_22_59_095

The 1/3 failure rate is suspicious, and in the past has often hinted towards a race condition interacting between parallel API requests.