switch_to_containers: optimize ownership change

As per https://github.com/ceph/ceph-ansible/pull/4323#issuecomment-538420164

using `find` command should be faster.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1757400

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
Co-Authored-by: Giulio Fidente <gfidente@redhat.com>

infrastructure-playbooks/switch-from-non-containerized-to-containerized-ceph-daemons.yml

@@ -90,11 +90,11 @@
          ceph_uid: 167
       when: ceph_docker_image is search("rhceph")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
     - name: check for existing old leveldb file extension (ldb)
@@ -181,11 +181,11 @@
         ceph_uid: 167
       when: ceph_docker_image_tag | string is search("centos") or ceph_docker_image is search("rhceph") or ceph_docker_image_tag | string is search("fedora")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
   tasks:
@@ -263,11 +263,11 @@
          ceph_uid: 167
       when: ceph_docker_image is search("rhceph")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown --verbose -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
     - name: check for existing old leveldb file extension (ldb)
@@ -377,11 +377,11 @@
         ceph_uid: 167
       when: ceph_docker_image_tag | string is search("centos") or ceph_docker_image is search("rhceph") or ceph_docker_image_tag | string is search("fedora")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
   tasks:
@@ -423,11 +423,11 @@
         ceph_uid: 167
       when: ceph_docker_image_tag | string is search("centos") or ceph_docker_image is search("rhceph") or ceph_docker_image_tag | string is search("fedora")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
   tasks:
@@ -495,11 +495,11 @@
         ceph_uid: 167
       when: ceph_docker_image_tag | string is search("centos") or ceph_docker_image is search("rhceph") or ceph_docker_image_tag | string is search("fedora")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
   tasks:
@@ -552,11 +552,11 @@
         ceph_uid: 167
       when: ceph_docker_image_tag | string is search("centos") or ceph_docker_image is search("rhceph") or ceph_docker_image_tag | string is search("fedora")
 
-    # NOTE: changed from file module to raw chown command for performance reasons
+    # NOTE: changed from file module to raw find command for performance reasons
     # The file module has to run checks on current ownership of all directories and files. This is unnecessary
     # as in this case we know we want all owned by ceph user
     - name: set proper ownership on ceph directories
-      command: "chown -R {{ ceph_uid }} /var/lib/ceph /etc/ceph"
+      command: "find /var/lib/ceph /etc/ceph -not -( -user {{ ceph_uid }} -or -group {{ ceph_uid }} -) -execdir chown {{ ceph_uid }}:{{ ceph_uid }} {} +"
       changed_when: false
 
   tasks: