Not sure I get your problem. The error message is self-explicit : "Server disk was unable to be resized because: Resize to zero disk flavor is not allowed."
It seems the flavor you want for resizing your instance has a root_gb variable equals to 0. In that case, Nova doesn't accept to resize from an image-based instance to a volume-based one. Setting the bug report as Invalid, but please move it back to New if you don't agree. ** 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/1560210 Title: Resize server up failed when server's diskConfig option is Manual Status in OpenStack Compute (nova): Invalid Bug description: In my setup, there are two type of hypervisors ESX and KVM. The server is on ESX host. But during resize, it failed as it is migrated from one host (i.e. ESX host) to another (i.e. KVM host). To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1560210/+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