How can I change the specifications of my virtual machine without losing its data/configurations?

Before modifying the specifications (flavor) of your virtual machine, ensure to back up the data to a volume.

Solutions:
If the virtual machine you want to modify was created from a bootable volume:

• The VM created from a bootable volume can be deleted without losing its data since the data is stored on the volume. Subsequently, you can create a new virtual machine from the existing bootable volume by specifying the volume's name in the volume_name field during VM creation or the Hyperstack UI. This allows the new VM to access the saved data on the volume and use its operating system, offering a way to change the VM's specifications without losing its data. Note that a bootable volume can only be attached to a single virtual machine at a time due to the limited support for parallel access to a single disk by most operating systems and file systems.

If the virtual machine was NOT created from a bootable volume:

1. Create a new bootable volume. See instructions on how to create a new bootable volume.

2. The new bootable volume must be attached to the virtual machine containing the custom data you wish to save. See volume attachment details.

3. Once the bootable volume is attached and the data is tranfered, the VM can be deleted as the data is stored on the volume.

4. Create a new VM with your desired specifications (flavor) from the bootable volume that contains the saved custom data.

References:

• Infrahub Docs | Bootable volumes
• Infrahub Docs | Volume
• Infrahub Docs | Flavors