Hi, Is the scenario possible? There is an doing op X and its OBC info is stored in the container: SharedLRU<>::object_contexts; In the meantime, there are many other OPs comming, and cause "lru_remove" the OBC of op X. If there is a new op trying to access the same object as op X, it may get something wrong. Yufan Chen -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html