You're asking to shrew the disk from 160GB to 100GB and that's something we don't support.
** Changed in: nova Status: New => Invalid -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1965441 Title: Error: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible Status in OpenStack Compute (nova): Invalid Bug description: <class 'nova.exception.FlavorDiskSmallerThanMinDisk'> (HTTP 500) (Request-ID: req-819ea4bc-7115-4645-a640-7e3a9bb9595a) Resize from m1.xlarge to m1.medium-xdisk on VIO Flavor Name m1.xlarge Flavor ID 5 RAM 16GB VCPUs 8 VCPU Disk 160GB Flavor Details Name m1.medium-xdisk VCPUs 2 Root Disk 100 GB Ephemeral Disk 0 GB Total Disk 100 GB RAM 4,096 MB Ubuntu18.04LTS-pristine To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1965441/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp