Cannot specify volume_size together with id or snapshot (ec2_vol) - How to increase size while creating volume from snapshot?

[Joanna Delaporte]

I have the use case where I want to create a snapshot, make a new volume from that snapshot, but larger, and then attach the new volume to an instance. 

So far, I have the snapshot creation working, but the ec2_vol module is now telling me that I cannot specify a volume size with the snapshot id. Why not? This is something I can do in the web GUI. 

- name: snapshot current backup volume

  ec2_snapshot:

    aws_access_key: "{{aws_key}}"

    aws_secret_key: "{{aws_secret}}"

    region: "{{aws_region}}"

    state: present

    wait: yes

    wait_timeout: 0 #0 means Never timeout(sec)

    description: "snapshot of xvdj from backup server taken {{ansible_date_time.iso8601}}"

    instance_id: "i-a34c2967"

    device_name: "/dev/xvdj"

    snapshot_tags:

      frequency: random

      client: jdelaporte

      Name: "backups_{{ansible_date_time.iso8601}}"

  register: new_snapshot

- name: get instance id for current nfsmaster

  ec2_remote_facts:

    aws_access_key: "{{aws_key}}"

    aws_secret_key: "{{aws_secret}}"

    region: "{{aws_region}}"

    filters:

      ip-address: 52.34.225.188

  register: nfsmaster_info

- name: create new volume from new backup data snapshot
  ec2_vol:
    aws_access_key: "{{aws_key}}"
    aws_secret_key: "{{aws_secret}}"
    region: "{{aws_region}}"
    state: present
    device_name: /dev/xvdz
    volume_size: 700
    snapshot: "{{new_snapshot.snapshot_id}}"
    instance: "{{item.id}}"
    volume_type: standard
  with_items: "{{nfsmaster_info.instances}}"

failed: [localhost] ...
"msg": "Cannot specify volume_size together with id or snapshot"