osd: add possibility to exclude device in osd_auto_discovery

Add a new `osd_auto_discovery_exclude` to give the possibility of
excluding some devices in auto_discovery scenario.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit 83d7ef777e)

group_vars/all.yml.sample

@@ -372,6 +372,9 @@ dummy:
 #osd_mount_options_xfs: noatime,largeio,inode64,swalloc
 #osd_objectstore: bluestore
 
+# Any device containing these patterns in their path will be excluded.
+#osd_auto_discovery_exclude: ['dm-', 'loop']
+
 # xattrs. by default, 'filestore xattr use omap' is set to 'true' if
 # 'osd_mkfs_type' is set to 'ext4'; otherwise it isn't set. This can
 # be set to 'true' or 'false' to explicitly override those

group_vars/rhcs.yml.sample

@@ -372,6 +372,9 @@ ceph_rhcs_version: 3
 #osd_mount_options_xfs: noatime,largeio,inode64,swalloc
 #osd_objectstore: bluestore
 
+# Any device containing these patterns in their path will be excluded.
+#osd_auto_discovery_exclude: ['dm-', 'loop']
+
 # xattrs. by default, 'filestore xattr use omap' is set to 'true' if
 # 'osd_mkfs_type' is set to 'ext4'; otherwise it isn't set. This can
 # be set to 'true' or 'false' to explicitly override those

roles/ceph-defaults/defaults/main.yml

@@ -364,6 +364,9 @@ osd_mkfs_options_xfs: -f -i size=2048
 osd_mount_options_xfs: noatime,largeio,inode64,swalloc
 osd_objectstore: bluestore
 
+# Any device containing these patterns in their path will be excluded.
+osd_auto_discovery_exclude: ['dm-', 'loop']
+
 # xattrs. by default, 'filestore xattr use omap' is set to 'true' if
 # 'osd_mkfs_type' is set to 'ext4'; otherwise it isn't set. This can
 # be set to 'true' or 'false' to explicitly override those

roles/ceph-facts/tasks/facts.yml

@@ -193,7 +193,7 @@
     - item.value.sectors != "0"
     - item.value.partitions|count == 0
     - item.value.holders|count == 0
-    - "'dm-' not in item.key"
+    - item.key not in osd_auto_discovery_exclude
 
 - name: set_fact ceph_uid for debian based system - non container
   set_fact: