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Hi Folks, last Friday at Nebraska we've experienced segfault of cmsd: Aug 15 13:35:05 xrootd.unl.edu kernel: cmsd[29377]: segfault at 41292 ip 0000003aabe54444 sp 00007f8548e366e0 error 6 in libXrdUtils.so.2.0.0[3aabe00000+70000] gdb shows: Core was generated by `/usr/bin/cmsd -l /var/log/xrootd/cmsd.log -c /etc/xrootd/xrootd-clustered.cfg -'. Program terminated with signal 11, Segmentation fault. #0 0x0000003aabe54444 in XrdLink::Reset() () from /usr/lib64/libXrdUtils.so.2 Missing separate debuginfos, use: debuginfo-install xrootd4-4.0.2-1.slc6.x86_64 Here last bits of cmsd log before cmsd restart: 140815 13:35:04 26306 Broadcast server.8266:[log in to unmask]:1096 is unreachable 140815 13:35:04 26306 Broadcast server.8369:[log in to unmask]:1097 is unreachable 140815 13:35:04 26306 Broadcast supervisor.77756:[log in to unmask]:1094 is unreachable 140815 13:35:04 26306 UnkFile rc=1 path=/store/mc/Spring14dr/QCD_Pt-170to300_Tune4C_13TeV_pythia8/AODSIM/castor_PU_S14_POSTLS170_V6-v1/00000/8E12AE5B-5AED-E311-8CDF-00266CF2ABA8.root 140815 13:35:04 26306 cms4193.22342:[log in to unmask] do_Select: delay 1 /store/mc/Spring14dr/QCD_Pt-170to300_Tune4C_13TeV_pythia8/AODSIM/castor_PU_S14_POSTLS170_V6-v1/00000/8E12AE5B-5AED-E311-8CDF-00266CF2ABA8.root 140815 13:35:04 26306 redirector.7151:[log in to unmask] XrdLink: Setting ref to 3+-1 post=0 140815 13:35:05 29377 XrdOpen: Unable to create socket for ' xrdfed09.cern.ch '; Name or service not known 140815 13:51:34 31201 Starting on Linux 2.6.32-431.17.1.el6.x86_64 If anyone is in the mood dig deeper I uploaded core file here: https://zvada.web.cern.ch/zvada/scratch/core.29249 Does this data point helps developers understand root cause of the crash? Please, let me know if we can provide something in addition to that or what you recommend to implement within our setup catch the proper data input for further investigation next time? Thanks, Marian ######################################################################## 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