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Does OpenStack Support Resizing to Flavor With Lower Disk?

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Problem

  • The following exception is seen in /var/log/pf9/ostackhost.log when resizing down.
    ResizeError: Resize error: Unable to resize disk down

Environment

  • Platform9 Managed OpenStack - All Versions

Answer

OpenStack supports flavor resizing down with one exception, the disk can't be resized down. If it requires resizing down the disk, the resize will fail and we will be able to see the following exception in the /var/log/pf9/ostackhost.log 

844 TRACE oslo_messaging.rpc.server ResizeError: Resize error: Unable to resize disk down.