if (b->realized)
return 0;
- if ((r = cg_create(b->controller, b->path)) < 0)
+ r = cg_create(b->controller, b->path);
+ if (r < 0) {
+ log_warning("Failed to create cgroup %s:%s: %s", b->controller, b->path, strerror(-r));
return r;
+ }
b->realized = true;