added the docker loopback fixer script

playbooks/adhoc/docker_loopback_to_lvm/docker-storage-setup

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+DEVS=/dev/xvdb
+VG=docker_vg

playbooks/adhoc/docker_loopback_to_lvm/docker_loopback_to_direct_lvm.yml

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+---
+# This playbook coverts docker to go from loopback to direct-lvm (the Red Hat recommended way to run docker)
+#  in AWS.  This adds an additional EBS volume and creates the Volume Group on this EBS volume to use.
+#
+#  To run:
+#  1. Source your AWS credentials (make sure it's the corresponding AWS account) into your environment
+#    export AWS_ACCESS_KEY_ID='XXXXX'
+#    export AWS_SECRET_ACCESS_KEY='XXXXXX'
+#
+# 2. run the playbook:
+#   ansible-playbook -e 'cli_environment=<env-name>' -e "cli_volume_size=30" -e  docker_loopback_to_direct_lvm.yml.yml
+#
+#  Notes:
+#  * By default this will do a 30GB volume.
+#  * iops are calculated by Disk Size * 30.  e.g ( 30GB * 30) = 900 iops
+#  * This will remove /var/lib/docker!
+#  * You may need to re-deploy docker images after this is run (like monitoring)
+#
+
+- name: Fix docker to have a provisioned iops drive
+  hosts: "tag_Name_{{ cli_tag_name }}"
+  user: root
+  connection: ssh
+  gather_facts: no
+
+  vars:
+    cli_volume_type: io1
+    cli_volume_size: 30
+    cli_volume_iops: {{ 30 * cli_volume_size}}
+
+  pre_tasks:
+  - fail:
+      msg: "This playbook requires {{item}} to be set."
+    when: "{{ item }} is not defined or {{ item }} == ''"
+    with_items:
+    - cli_tag_name
+    - cli_volume_size
+
+  - debug:
+      var: hosts
+
+  - name: start docker
+    service:
+      name: docker
+      state: started
+
+  - name: Determine if loopback
+    shell: docker info | grep 'Data file:.*loop'
+    register: loop_device_check
+    ignore_errors: yes
+
+  - debug:
+      var: loop_device_check
+
+  - name: fail if we don't detect loopback
+    fail:
+      msg:  loopback not detected! Please investigate manually.
+    when: loop_device_check.rc == 1
+
+  - name: stop zagg client monitoring container
+    service:
+      name: oso-rhel7-zagg-client
+      state: stopped
+    ignore_errors: yes
+
+  - name: stop pcp client monitoring container
+    service:
+      name: oso-f22-host-monitoring
+      state: stopped
+    ignore_errors: yes
+
+  - name: stop docker
+    service:
+      name: docker
+      state: stopped
+
+  - name: delete /var/lib/docker
+    command: rm -rf /var/lib/docker
+
+  - name: remove /var/lib/docker
+    command: rm -rf /var/lib/docker
+
+  - name: check to see if /dev/xvdb exists
+    command: test -e /dev/xvdb
+    register: xvdb_check
+    ignore_errors: yes
+
+  - debug: var=xvdb_check
+
+  - name: fail if /dev/xvdb already exists
+    fail:
+      msg: /dev/xvdb already exists.  Please investigate
+    when: xvdb_check.rc == 0
+
+  - name: Create a volume and attach it
+    delegate_to: localhost
+    ec2_vol:
+      state: present
+      instance: "{{ ec2_id }}"
+      region: "{{ ec2_region }}"
+      volume_size: "{{ cli_volume_size | default(30, True)}}"
+      volume_type: "{{ cli_volume_type }}"
+      device_name: /dev/xvdb
+      iops: "{{ 30 * cli_volume_size }}"
+    register: vol
+
+  - debug: var=vol
+
+  - name: tag the vol with a name
+    delegate_to: localhost
+    ec2_tag: region={{ ec2_region }} resource={{ vol.volume_id }}
+    args:
+      tags:
+        Name: "{{ ec2_tag_Name }}"
+        env: "{{ ec2_tag_environment }}"
+    register: voltags
+
+  - name: Wait for volume to attach
+    pause:
+      seconds: 30
+
+  - name: copy the docker-storage-setup config file
+    copy:
+      src: docker-storage-setup
+      dest: /etc/sysconfig/docker-storage-setup
+      owner: root
+      group: root
+      mode: 0664
+
+  - name: docker storage setup
+    command: docker-storage-setup
+    register: setup_output
+
+  - debug: var=setup_output
+
+
+  - name: start docker
+    command: systemctl start docker.service
+    register: dockerstart
+
+  - debug: var=dockerstart