File 3006-lp1986747-fix-osd-class-dir.patch of Package ceph-ceph-18.2.8

diff --git a/src/common/options/osd.yaml.in b/src/common/options/osd.yaml.in
index 2fbdaf125..193805d71 100644
--- a/src/common/options/osd.yaml.in
+++ b/src/common/options/osd.yaml.in
@@ -559,7 +559,7 @@ options:
 - name: osd_class_dir
   type: str
   level: advanced
-  default: @CMAKE_INSTALL_LIBDIR@/rados-classes
+  default: @CMAKE_INSTALL_FULL_LIBDIR@/rados-classes
   fmt_desc: The class path for RADOS class plug-ins.
   with_legacy: true
 - name: osd_open_classes_on_start