BFV Instance Fails to Migrate: "Driver initialize connection failed (error: PureHTTPError status code 400)

Problem

• A boot-from-volume (BFV) instance is failing to migrate with the following error shown in the /var/log/pf9/ostackhost.log file on the respective hypervisor host.

ERROR cinder.api.middleware.fault [...] Caught error: [class 'oslo_messaging.rpc.client.RemoteError'] Remote error: VolumeBackendAPIException Bad or unexpected response from the storage volume backend API: Driver initialize connection failed (error: PureHTTPError status code 400 returned by REST version 1.5 at 10.248.8.123: BAD REQUEST

• A similar error is observed on the Block Storage host in the /var/log/pf9/cindervolume-base.log file.

[{"msg": "Volume does not exist.", "ctx": "volume-58afa6e7-c8c4-473e-a95c-d948b0a4584e-cinder"}]).: PureHTTPError: PureHTTPError status code 400 returned by REST version 1.5 at 10.248.8.123: BAD REQUEST

Environment

• Platform9 Managed OpenStack - All Versions
• Cinder
• Pure Storage Backend

Cause

In Pure Storage, volumes that are/were managed by OpenStack Block Storage ( Cinder) were moved to a Volume Group – thus, affecting the filename schema/path and causing the volumes to be no longer recognized.

Resolution

The volumes can be fixed by moving them back out of the Volume Group to the root container of the array. This reverts the name to the Cinder recognized name.