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Creating Volume-Backed Instance From Image Fails

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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.

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Environment

  • Platform9 Managed OpenStack - All Versions

  • Nova

  • Cinder

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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.

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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 |...

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

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