diff --git a/odoo-tecnativa/metadata.yml b/odoo-tecnativa/metadata.yml
index 48ac89b..3d1a4cf 100644
--- a/odoo-tecnativa/metadata.yml
+++ b/odoo-tecnativa/metadata.yml
@@ -64,6 +64,20 @@ uses:
               echo "ProxyPass /longpolling/ http://${MASTER_BASE_SERVICE_NAME}:8072/longpolling/"
               echo "ProxyPassReverse /longpolling/ http://${MASTER_BASE_SERVICE_NAME}:8072/longpolling/"
           fi
+  backup:
+    constraint: recommended
+    auto: pair
+    solves:
+      backup: "Automatic regular backup"
+    default-options:
+      ## First pattern matching wins, no pattern matching includes.
+      ## include-patterns are checked first, then exclude-patterns
+      ## Patterns rules:
+      ##  - ending / for directory
+      ##  - '*' authorized
+      ##  - must start with a '/', will start from $SERVICE_DATASTORE
+      exclude-patterns:
+        - "/var/lib/odoo/sessions/"
 
 # network-isolation:
 #   whitelist:  ## required external services used by this service
diff --git a/postgres/metadata.yml b/postgres/metadata.yml
index 88ea8ed..ced6c32 100644
--- a/postgres/metadata.yml
+++ b/postgres/metadata.yml
@@ -10,6 +10,24 @@ uses:
     constraint: optional
     auto: pair
     solves:
-      backup: "Automatic regular backups"
+      backup: "Automatic regular dumps for backuping purpose"
     default-options:
       schedule: "31 * * * *"  ## schedule backup every hour
+  ## This one is useful only if previous relation is used
+  backup:
+    constraint: optional
+    auto: pair
+    solves:
+      backup: "Automatic regular backups of dumps"
+    default-options:
+      ## First pattern matching wins, no pattern matching includes.
+      ## include-patterns are checked first, then exclude-patterns
+      ## Patterns rules:
+      ##  - ending / for directory
+      ##  - '*' authorized
+      ##  - must start with a '/', will start from $SERVICE_DATASTORE
+      # include-patterns:
+      #   - /var/backups/pg/
+      exclude-patterns:
+        - "/var/lib/"                      ## postgres working data files
+        - "/var/backups/pg/*.inprogress"   ## database dump in progress