Creating Volume-Backed Instance From Image Fails

Problem

• User receives the following error while attempting to create a 'Boot From Volume' instance starting from an image.

Error: Error waiting for openstack_blockstorage_volume_v2 [volumeUUID] to become ready: The volume is in error status. Please check with your cloud admin or check the Block Storage API logs to see why this error occurred.

• The following log is seen in /var/log/pf9/cindervolume-base.log

744 29969 ERROR cinder.volume.manager ImageUnacceptable: Image [imageUUID] is unacceptable: Image virtual size is [x]GB and doesn't fit in a volume of size [x+y]GB.

Environment

• Platform9 Managed OpenStack - All Versions
• Nova
• Cinder

Cause

As seen in the cindervolume-base.log file described above, the virtual size of the image is larger than the size of the volume specified during creation of the instance.

Resolution

1. The size of the volume specified during creation of the instance must be larger than the virtual size of the image being used to create the volume.

# openstack image show 9cb0de9f-27b9-cef2-6b90-a786d79866c6...| virtual_size | 186457982354 |...

2. With the above virtual_size given in bytes (186457982354 = ~186.5GB), the volume size specified must be at least 187GB.