Hello. OS CentOS 5.4 uname -a Linux oss0 2.6.18-128.7.1.el5_lustre.1.8.1.1 #1 SMP Tue Oct 6 05:48:57 MDT 2009 x86_64 x86_64 x86_64 GNU/Linux Lustre 1.8.1.1 OSS server. A lot of errors in /var/log/messages: Aug 10 14:46:34 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) Skipped 1 previous similar message Aug 10 15:07:01 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff810210710c00 x1343624153290636/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 15:12:34 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81013823e000 x1343624153292102/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 15:15:50 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81021538f400 x1343624153293273/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 15:21:10 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81018a505000 x1343624153294795/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 15:32:38 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff810165db2800 x1343624153299648/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 15:42:43 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff810214360800 x1343624153304113/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 15:53:18 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81011449f400 x1343624153308982/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 16:03:22 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81001613c000 x1343624153313704/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 16:03:22 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) Skipped 2 previous similar messages Aug 10 16:18:16 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81005954e800 x1343624153319422/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 16:18:16 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) Skipped 2 previous similar messages Aug 10 16:28:21 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff810141f6b000 x1343624153322704/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 16:28:21 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) Skipped 2 previous similar messages Aug 10 16:39:58 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff810210710400 x1343624153326551/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 16:39:58 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) Skipped 3 previous similar messages Aug 10 16:56:44 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff81016aec6800 x1343624153330140/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 17:08:22 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff8100a5334400 x1343624153331310/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 17:19:21 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) @@@ IMP_CLOSED req at ffff810200a66400 x1343624153333852/t0 o401->@10.10.10.6 at tcp:17/18 lens 4096/384 e 0 to 1 dl 0 ref 1 fl Rpc:N/0/0 rc 0/0 Aug 10 17:19:21 oss0 kernel: LustreError: 2802:0:(client.c:775:ptlrpc_import_delay_req()) Skipped 7 previous similar messages But it seems all working correctly ! Should i worry about them !? Thanks