ceph-validate: use root device from ansible_mounts

Instead of using findmnt command to find the device associated to the
root mount point then we can use the ansible_mounts fact.

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit 7e50380f7fc101bf3533fff2d9c3082a59c54399)

diff --git a/roles/ceph-validate/tasks/check_devices.yml b/roles/ceph-validate/tasks/check_devices.yml
index a8e2622bd3c1ba0581d77a14ee72abf202b1b296..6fa21894203884e68f04dc17a990ee5d3b496866 100644 (file)
--- a/roles/ceph-validate/tasks/check_devices.yml
+++ b/roles/ceph-validate/tasks/check_devices.yml
@@ -1,17 +1,7 @@
 ---
-- name: find device used for operating system
-  command: findmnt -v -n -T / -o SOURCE
-  changed_when: false
-  register: root_device
-
-- name: resolve root_device
-  command: "readlink -f {{ root_device.stdout }}"
-  changed_when: false
-  register: _root_device
-
 - name: set_fact root_device
   set_fact:
-    root_device: "{{ _root_device.stdout }}"
+    root_device: "{{ ansible_facts['mounts'] | selectattr('mount', 'match', '^/$') | map(attribute='device') | first }}"
 
 - name: lvm_volumes variable's tasks related
   when: