Create snapshot from volume and image-download results in size 0 in Red Hat OpenStack Platform

Solution In Progress - Updated -

Issue

For example:

  • Shutdown instance

  • Create snapshot

[stack@undercloud tmp]$ nova image-create --poll instance instance-backup
Server snapshotting... 100% complete
Finished
  • Download the snapshot
[stack@undercloud tmp]$ glance image-download --file /tmp/instance.qcow2 <UUID>
  • check the download image size
[stack@undercloud tmp]$ ls -la /tmp/instance.qcow2 
-rw-rw-r--. 1 stack stack 0 Jan 15 21:05 /tmp/instance.qcow2 

Environment

Red Hat Enteprise Linux OpenStack Platform 7
Red Hat OpenStack Platform 8
Red Hat OpenStack Platform 9
Red Hat OpenStack Platform 10

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