> Try setting "performance.read-ahead off" No dice, I still get similar errors I/O errors on the client with "performance.read-ahead off". Snippet from the glusterfsd brick log: [2013-07-16 11:15:03.610652] E [posix.c:1940:posix_readv] 0-xfs-posix: read failed on fd=0x22a72fc: Invalid argument [2013-07-16 11:15:03.610739] I [server-rpc-fops.c:1489:server_readv_cbk] 0-xfs-server: 401: READV 0 (c709280b-d1f2-4965-9f0b-a93a4507525a) ==> (Invalid argument) [2013-07-16 11:15:03.610816] T [rpcsvc.c:1081:rpcsvc_submit_generic] 0-rpc-service: Tx message: 116 [2013-07-16 11:15:03.610882] T [rpcsvc.c:707:rpcsvc_record_build_header] 0-rpc-service: Reply fraglen 140, payload: 116, rpc hdr: 24 [2013-07-16 11:15:03.611040] D [socket.c:463:__socket_rwv] 0-tcp.xfs-server: would have passed zero length to read/write [2013-07-16 11:15:03.611106] T [rpcsvc.c:1118:rpcsvc_submit_generic] 0-rpc-service: submitted reply for rpc-message (XID: 0x401x, Program: GlusterFS 3.3, ProgVers: 330, Proc: 12) to rpc-transport (tcp.xfs-server) [2013-07-16 11:15:03.616071] T [rpcsvc.c:498:rpcsvc_handle_rpc_call] 0-rpcsvc: Client port: 1021 [2013-07-16 11:15:03.616142] T [rpcsvc-auth.c:321:rpcsvc_auth_request_init] 0-rpc-service: Auth handler: AUTH_GLUSTERFS-v2 [2013-07-16 11:15:03.616204] T [rpcsvc.c:388:rpcsvc_request_create] 0-rpc-service: received rpc-message (XID: 0x192, Ver: 2, Program: 1298437, ProgVers: 330, Proc: 12) from rpc-transport (tcp.xfs-server) [2013-07-16 11:15:03.616272] T [auth-glusterfs.c:216:auth_glusterfs_v2_authenticate] 0-rpc-service: Auth Info: pid: 11976, uid: 107, gid: 107, owner: 3d7fb05261b6d484 [2013-07-16 11:15:03.616333] T [rpcsvc.c:214:rpcsvc_program_actor] 0-rpc-service: Actor found: GlusterFS 3.3 - READ [2013-07-16 11:15:03.616546] D [io-threads.c:326:iot_schedule] 0-xfs-io-threads: READ scheduled as slow fop [2013-07-16 11:15:03.616677] E [posix.c:1940:posix_readv] 0-xfs-posix: read failed on fd=0x22a72fc: Invalid argument Let me know if you'd like to see the strace or full server/client logs. -Jacob
