diff --git a/ceph/osd/setup.sls b/ceph/osd/setup.sls
index 5b1a832..ab03da1 100644
--- a/ceph/osd/setup.sls
+++ b/ceph/osd/setup.sls
@@ -21,7 +21,7 @@
 
 {%- if disk.get('enabled', True) %}
 
-{% set dev = disk.dev %}
+{% set dev = '`readlink -f ' + disk.dev + '`' %}
 
 # for uniqueness
 {% set dev_device = dev + disk.get('data_partition_prefix', '') + disk.get('data_partition', 1)|string %}