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Hi Tapas, Yes, this is a known bug and will be corrected in 4.1. If you have enabled blacklisting (i.e. cms.blacklist directive) you should remove it. The bug was fixed with this patch: https://github.com/xrootd/xrootd/commit/a87bef08c8112f9de33ae5a9bb728689ab2602e3 Andy P.S. The NODELAY error message is also suppressed in 4.1 – it causes no harm. From: Tapas Sarangi Sent: Thursday, November 20, 2014 1:41 PM To: [log in to unmask] Subject: Login: localhost login failed; blacklisted Dear Xrootd Developers, Here at T2_US_Wisconsin, we are using xroot-4.0.4 OSG 32 released version. We are seeing problems with cmsd.log for all of our supervisor nodes. /var/log/xrootd/cmsd.log repeats these messages, 141120 15:19:47 12849 setOpts: Unable to set socket NODELAY; operation not supported 141120 15:19:47 12849 Inet: Accepted connection from 7@localhost 141120 15:19:47 12849 Login: localhost login failed; blacklisted and /var/log/xrootd/xrootd.log repeats this one : 141120 15:35:23 12755 cms_Login: localhost login failed; localhost is blacklisted As a result we have limited number of servers without the supervisors. All our xrootd servers, redirector and supervisors have dual stack IPv6/v4 network. Any help to understand and solve the problem is appreciated. Let us know if you need more information from us. Thanks -Tapas -------------------------------------------------------------------------------- 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 ######################################################################## 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