copr-be: check RAID10 volumes

inventory/group_vars/copr_all_instances_aws

@@ -1,2 +1,7 @@
 # Put here configuration for all copr instances (production, devel, ...)
-
+---
+copr_backend_data_raid10_volumes:
+  - nvme-Amazon_Elastic_Block_Store_vol017b9ff832cb0fd97-part1
+  - nvme-Amazon_Elastic_Block_Store_vol0188cd4fedb1e7c78-part1
+  - nvme-Amazon_Elastic_Block_Store_vol025a19c2330fca7cd-part1
+  - nvme-Amazon_Elastic_Block_Store_vol0e809c6ef1c11f2c9-part1

roles/copr/backend/tasks/mount_fs.yml

@@ -1,3 +1,35 @@
+---
+- name: raid10 volume on the production machine
+  when: devel
+  tags: mdadm
+  block:
+    - name: install LVM and RAID utilities
+      package:
+        name:
+          - lvm2
+          - mdadm
+      tags:
+        - mdadm
+
+    - name: stat the raid volumes
+      stat:
+        path: "/dev/disk/by-id/{{ item }}"
+      register: stat_raid
+      loop: "{{ copr_backend_data_raid10_volumes }}"
+
+    - name: fail if raid volumes do not exist
+      debug: msg=checked
+      failed_when: not item.stat.exists
+      loop: "{{ stat_raid.results }}"
+
+    - name: stat the ext4 filesystem
+      stat: path=/dev/disk/by-label/copr-repo-raid10
+      register: stat_repo_fs
+
+    - name: fail if ext4 filesystem is not found by devmapper
+      debug: msg=checked
+      failed_when: stat_repo_fs.stat.exists
+
 - name: prepare mount point
   file: state=directory path=/var/lib/copr/public_html