> Getattr request for stat(2) needs to get inode size. MDS revokes Fw > capability from the writer, to prevent writer from changing inode size > at the same time. This is price of mantaining POSIX-compliant . Thanks, Zheng Yan:-) In our case, there is only one client want the "Fw" capability, most of the clients just needs "Fscr". However, as LOCK_MIX state allows only "Frwl", CInode::filelock had to wait in LOCK_SYNC_MIX state for those tens of READ clients to release "Fsc" caps, which led to the long wait and inefficient processing of getattr requests. We think waiting for clients to release "Fsc" in this case might not be necessary, is this right? -- 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