Dear all, I have a colleague that from time to time sees these errors. Any idea how to help debug this problem. Hi, Running root jobs that read ntuples stored in xrootd, the error messages below appear from time to time. I am not sure how to interpret the severity of those messages. Do they mean that files are being skipped or that the error is transient or was recovered? Stephane. 120117 12:06:52 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:06:52 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:07:22 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:07:22 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:08:23 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:08:52 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:09:22 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:09:52 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:09:52 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:10:22 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:10:23 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:10:52 30658 Xrd: XrdClientMessage::ReadRaw: Failed to read header (8 bytes). 120117 12:21:39 001 Xrd: GoToAnotherServer: Going to: titan19:1094 120117 12:21:39 001 Xrd: CheckErrorStatus: Server [titan:1094] declared: session not found(error code: 3011) 120117 12:21:58 001 Xrd: GoToAnotherServer: Going to: titan25:1094 120117 12:21:58 001 Xrd: CheckErrorStatus: Server [titan:1094] declared: session not found(error code: 3011) 120117 12:22:12 001 Xrd: GoToAnotherServer: Going to: titan12:1094 120117 12:22:12 001 Xrd: CheckErrorStatus: Server [titan:1094] declared: session not found(error code: 3011) 120117 12:22:33 001 Xrd: GoToAnotherServer: Going to: titan26:1094 120117 12:22:33 001 Xrd: CheckErrorStatus: Server [titan:1094] declared: session not found(error code: 3011) 120117 12:22:46 001 Xrd: GoToAnotherServer: Going to: titan15:1094 120117 12:22:46 001 Xrd: CheckErrorStatus: Server [titan:1094] declared: session not found(error code: 3011) ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1