Xrootd seg fault on FSTs under moderate/high load


I don’t know if anyone else has seen this issue but in the last couple of days, after adding more storage and as a consequence, getting significantly higher throughput from ALICE, my FSTs are seg faulting every 2-3 hours with:

Aug 19 17:30:05 epgsr6 kernel: xrootd[14136]: segfault at 0 ip 00000037b0a8987b sp 00007fc0943e0918 error 6 in libc-2.12.so[37b0a00000+18b000]

I’m not certain, but neither memory or processor seems to be stretched when it fails and I think I have nofile set correctly:


  •         hard  nofile          65500
  •         soft  nofile          65500

Am I missing something obvious? Any help would be greatly appreciated!

Many Thanks,

Mark Slater, Birmingham University

I should add, packages running are:

eos-apmon.x86_64                               1.1.8-1.el6                  @eos-dependencies
eos-client.x86_64                              4.2.29-1.el6                 @eos
eos-folly.x86_64                               2017.09.18.00-4.el6          @eos-dependencies
eos-server.x86_64                              4.2.29-1.el6                 @eos
libmicrohttpd.x86_64                           0.9.38-eos.yves.slc6         @eos-dependencies
protobuf3.x86_64                               3.3.1-1.el6                  @eos-dependencies
tokenauthz.x86_64                              1.2.0-1                      @eos-dependencies

xrootd.x86_64                                  1:4.8.4-1.el6                @epel
xrootd-alicetokenacc.x86_64                    1.3.1-1                      @eos-dependencies
xrootd-client.x86_64                           1:4.8.4-1.el6                @epel
xrootd-client-devel.x86_64                     1:4.8.4-1.el6                @epel
xrootd-client-libs.x86_64                      1:4.8.4-1.el6                @epel
xrootd-devel.x86_64                            1:4.8.4-1.el6                @epel
xrootd-libs.x86_64                             1:4.8.4-1.el6                @epel
xrootd-private-devel.x86_64                    1:4.8.4-1.el6                @epel
xrootd-selinux.noarch                          1:4.8.4-1.el6                @epel
xrootd-server.x86_64                           1:4.8.4-1.el6                @epel
xrootd-server-devel.x86_64                     1:4.8.4-1.el6                @epel
xrootd-server-libs.x86_64                      1:4.8.4-1.el6                @epel

on SL6.9.

Thanks again!