execute: if we fail to do namespacing, explain why we refuse to continue in a debug...

diff --git a/src/core/execute.c b/src/core/execute.c
index f561bfe11a3c98cdd82ec5f0d0fb295aba61af1d..b531dedf327bf5b4cf3cab0f50963bb009d99da0 100644 (file)
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -2431,6 +2431,10 @@ static int apply_mount_namespace(
                         return 0;
                 }
 
+                log_unit_debug(u, "Failed to set up namespace, and refusing to continue since the selected namespacing options alter mount environment non-trivially.\n"
+                               "Bind mounts: %zu, temporary filesystems: %zu, root directory: %s, root image: %s, dynamic user: %s",
+                               n_bind_mounts, context->n_temporary_filesystems, yes_no(root_dir), yes_no(root_image), yes_no(context->dynamic_user));
+
                 return -EOPNOTSUPP;
         }