yahoo-eng-team team mailing list archive

[Man Li Qi <qimanli@xxxxxxxxxx>]

Public bug reported:

Detail description and steps:
1. Configure vmdk as the volume_driver in cinder.conf, restart cinder corresponding service. Just like below:
volume_driver=cinder.volume.drivers.vmware.vmdk.VMwareVcVmdkDriver
2. Create a volume with command with "cinder create..."

Current problem:
If there are many hosts in the environment, for example 200 hosts, and the top hosts of the hosts list don't meet the requirement, it will lead openstack to interactive many times with vcenter(api calls), and it will cause the performance of volume creation very bad. The time cost mainly focuses on datastore selection phase.


Expected result:
Even though there are many hosts in the environment, the duration for volume creation(datastore selection) with vmdk driver is within acceptable range.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: vmware

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https://bugs.launchpad.net/bugs/1521894

Title:
  Datastore selection in cinder vmdk driver is too slow

Status in OpenStack Compute (nova):
  New

Bug description:
  Detail description and steps:
  1. Configure vmdk as the volume_driver in cinder.conf, restart cinder corresponding service. Just like below:
  volume_driver=cinder.volume.drivers.vmware.vmdk.VMwareVcVmdkDriver
  2. Create a volume with command with "cinder create..."

  Current problem:
  If there are many hosts in the environment, for example 200 hosts, and the top hosts of the hosts list don't meet the requirement, it will lead openstack to interactive many times with vcenter(api calls), and it will cause the performance of volume creation very bad. The time cost mainly focuses on datastore selection phase.

  
  Expected result:
  Even though there are many hosts in the environment, the duration for volume creation(datastore selection) with vmdk driver is within acceptable range.

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