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OpenStack instances

When a VM instance is created through Waldur, it is created using Cinder service with 2 volumes:

  • root volume containing OS root image, bootable;
  • data volume an empty volume for data.

VM resize (flavor). To change memory or CPU number, a flavor should be changed. Please note, that the disk size is not affected. Change can happen only for a stopped VM.

VM resize (disk). Increasing a disk size means extension of the data volume attached to the instance. The process includes detaching of a data volume, extending it and re-attaching to a VM. Disk can be increased only for a stopped VM.