test: add debugging for raid tests

The raid tests are the ones which most often fail with flakes.  Add
some debugging to try to find out why they fail.

Signed-off-by: Rich Megginson <rmeggins@redhat.com>

Author: richm

tests/tasks/debug.yml

@@ -0,0 +1,41 @@
+---
+- name: Gather debug information
+  shell:
+    executable: /bin/bash
+    cmd: |
+      set -euxo pipefail
+      exec 1>&2
+      if type -p lsblk >/dev/null; then
+        lsblk -p --pairs --bytes -o NAME,TYPE,SIZE,FSTYPE,LOG-SEC
+      fi
+      if type -p mdadm >/dev/null; then
+        mdadm --misc --examine --scan
+      fi
+      if type -p dmsetup >/dev/null; then
+        dmsetup ls --tree --separator /
+      fi
+      if type -p lvm >/dev/null; then
+        lvm vgdisplay
+      fi
+      if type -p udevadm >/dev/null; then
+        udevadm settle -t 0
+      fi
+  changed_when: false
+
+- name: Gather RAID volume information
+  when:
+    - storage_test_volume.type | d(none) == 'raid'
+    - storage_test_volume._raw_device | d("") | length > 0
+  block:
+    - name: Get information about RAID
+      command: mdadm --detail {{ storage_test_volume._raw_device | quote }}
+      changed_when: false
+
+- name: Gather RAID pool information
+  when:
+    - storage_test_pool.raid_level | d(none) != none
+    - storage_test_pool.name | d("") | length > 0
+  block:
+    - name: Get information about RAID
+      command: mdadm --detail /dev/md/{{ storage_test_pool.name }}-1
+      changed_when: false