Added role misc/hdd_dir to link data directories to HDDs

- Also added task to common to create parent directory

roles/common/tasks/main.yml

@@ -38,6 +38,16 @@
   vars:
     ansible_become: no
 
+- name: Create hdd data directory
+  file:
+    state: directory
+    path: "{{ global_hdd_directory }}"
+    owner: root
+    group: root
+    mode: u=rwx,g=rx,o=rx
+  when:
+    - global_hdd_directory is defined
+
 - name: Create scripts directories
   file:
     path: "{{ item }}"

roles/misc/hdd_dir/defaults/main.yml

@@ -0,0 +1,10 @@
+---
+
+# will be linked from hdd_source_dir to hdd_target_dir
+
+# domain used to determine hdd_directory_name
+hdd_directory_name: "{{ domain }}~{{ hdd_source_dir | basename }}"
+
+use_hdd_directory: no
+# hdd_source_dir
+hdd_target_dir: "{{ global_hdd_directory }}/{{ hdd_directory_name }}"

roles/misc/hdd_dir/meta/main.yml

@@ -0,0 +1,3 @@
+---
+
+allow_duplicates: yes

roles/misc/hdd_dir/tasks/main.yml

@@ -0,0 +1,36 @@
+---
+
+- name: Link data directory to HDD if requested
+  when:
+    - use_hdd_directory and hdd_target_dir is defined
+  block:
+
+    - name: Check source directory
+      stat:
+        path: "{{ hdd_source_dir }}"
+        follow: no # to check if it is a link
+        get_attributes: no
+        get_checksum: no
+        get_mime: no
+      register: source_dir_info
+
+    - name: Ensure that source directory is not already used
+      fail:
+        msg: >-
+          Source directory {{ hdd_source_dir | quote }} already used,
+          please shutdown service and transfer data manually
+      when:
+        - source_dir_info.stat.exists and not source_dir_info.stat.islnk
+
+    - name: Create target directory on HDD
+      file:
+        state: directory
+        path: "{{ hdd_target_dir }}"
+
+    - name: Create link from source to target
+      file:
+        state: link
+        src: "{{ hdd_target_dir }}"
+        dest: "{{ hdd_source_dir }}"
+        owner: root
+        group: root