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Hi Andrew, Thanks for the explanation. Looking at the server logs I see two cases. One is a file not found issue for files we are not subscribed to in Phedex so that makes sense. The other is a connection timeout issue with another site. Thanks for the help. We'll look into resolving the timeouts. -Erik On Fri, 2017-01-06 at 16:55 -0800, Andrew Hanushevsky wrote: > Hi Eric, > > The error message is printed when the client is saying that it tried the > server that the redirector told it to use but could not find the file > there or got an I/O error. Since you have configured a Distributed File > System as the source of the data then any error on one server would, > presumably, be the same error on any other server (it is a DFS which > should be the same for every server). The redirector, by default, allows > this to happen twice. On the third attempt it issues the error message > because clearly there is no progress in resolving the problem by picking > another data server. > > To find out what the error actually is, look at the data server log files > around the time the redirector issues the message and it will show what > the problem is at the server level. > > Andy > > On Tue, 3 Jan 2017, Gough, Erik S wrote: > > > Hello, > > > > I see an error in the Purdue xrootd logs that causes me some concern. > > After a scan of the logs I see it can occur up to 100k times a day. Here > > an example log entry from xrootd.log on our redirector: > > > > 170103 03:29:56 64059 Decode xrootd gave > > uscms407.30510:[log in to unmask] err -2 'Too many > > attempts to gain dfs read access to the > > file' /store/data/Run2016G/Charmonium/AOD/23Sep2016-v1/70000/8087EC19-1496-E611-B526-008CFA0008C4.root > > 170103 03:29:56 64161 uscms407.30510:[log in to unmask] > > XrootdResponse: sending err 3011: Too many attempts to gain dfs read > > access to the file > > > > I was thinking this could be related to the 'limit' option for cms.dfs > > configuration on the redirector, but we don't have that option set which > > from my understanding makes there be no limit. > > > > Here is the cms.dfs configuration line: > > cms.dfs lookup distrib mdhold 10m redirect immed > > > > I attached our whole configuration file as well. > > > > Any thoughts on what could be causing this error? > > > > Thanks, > > -Erik > > > > > > > > > > > > > > > > > > > > > > ######################################################################## > > Use REPLY-ALL to reply to list > > > > To unsubscribe from the XROOTD-L list, click the following link: > > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 > > ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1