valide: improve device check

We know make sure that:

* devices are actually block special files
* length of dedicated_device is identical to devices

Signed-off-by: Sébastien Han <seb@redhat.com>

roles/ceph-validate/tasks/check_devices.yml

@@ -0,0 +1,37 @@
+---
+- name: validate devices is actually a device
+  parted:
+    device: "{{ item }}"
+    unit: MiB
+  register: devices_parted
+  with_items: "{{ devices }}"
+
+- name: fail if one of the devices is not a device
+  fail:
+    msg: "{{ item }} is not a block special file!"
+  when:
+    - item.rc != 0
+  with_items: "{{ devices_parted.results }}"
+
+- name: validate dedicated_device is/are actually device(s)
+  parted:
+    device: "{{ item }}"
+    unit: MiB
+  register: dedicated_device_parted
+  with_items: "{{ dedicated_device }}"
+  when:
+    - osd_scenario == 'non-collocated'
+
+- name: fail if one of the dedicated_device is not a device
+  fail:
+    msg: "{{ item }} is not a block special file!"
+  when:
+    - item.rc != 0
+  with_items: "{{ dedicated_device_parted.results }}"
+
+- name: fail if dedicated_device is not the size length as devices
+  fail:
+    msg: "dedicated_device lengtth must be identical to devices's length"
+  when:
+    - osd_scenario == 'non-collocated'
+    - dedicated_device|length != devices|length

roles/ceph-validate/tasks/main.yml

@@ -52,3 +52,6 @@
 
 - name: include check_system.yml
   include: check_system.yml
+
+- name: include check_devices.yml
+  include: check_devices.yml