DAOS-16488 common: more log message for LRU cache

These message will help us to understand whether there is DRAM corruption.

Signed-off-by: Fan Yong <fan.yong@intel.com>

src/common/lru.c

@@ -255,7 +255,9 @@ void
 daos_lru_ref_release(struct daos_lru_cache *lcache, struct daos_llink *llink)
 {
 	D_ASSERT(lcache != NULL && llink != NULL && llink->ll_ref > 1);
-	D_ASSERT(d_list_empty(&llink->ll_qlink));
+	D_ASSERTF(d_list_empty(&llink->ll_qlink),
+		  "May hit corrupted item in LRU cache %p: llink %p, refs %d, prev %p, next %p\n",
+		  lcache, llink, llink->ll_ref, llink->ll_qlink.prev, llink->ll_qlink.next);
 
 	lru_hop_rec_decref(&lcache->dlc_htable, &llink->ll_link);
 

src/vos/vos_obj_cache.c

@@ -160,18 +160,19 @@ vos_obj_cache_create(int32_t cache_size, struct daos_lru_cache **occ)
 {
 	int	rc;
 
-	D_DEBUG(DB_TRACE, "Creating an object cache %d\n", (1 << cache_size));
 	rc = daos_lru_cache_create(cache_size, D_HASH_FT_NOLOCK,
 				   &obj_lru_ops, occ);
-	if (rc)
-		D_ERROR("Error in creating lru cache: "DF_RC"\n", DP_RC(rc));
+	DL_CDEBUG(rc != 0, DLOG_ERR, DLOG_INFO, rc, "Create VOS object LRU cache %p, size %u",
+		  *occ, 1 << cache_size);
+
 	return rc;
 }
 
 void
 vos_obj_cache_destroy(struct daos_lru_cache *occ)
 {
 	D_ASSERT(occ != NULL);
+	D_INFO("Destroy VOS object LRU cache %p\n", occ);
 	daos_lru_cache_destroy(occ);
 }