Dunno if this has been seen before so just for info, 1 in 24 OSD just did this: Jul 9 15:13:35 n4 ceph-osd: *** Caught signal (Segmentation fault) ** Jul 9 15:13:35 n4 ceph-osd: in thread 7ff209282700 thread_name:msgr-worker-2 Jul 9 15:13:35 n4 kernel: msgr-worker-2[4697]: segfault at 0 ip 00007ff21002f42b sp 00007ff20927b9c0 error 4 in libtcmalloc.so.4.4.5[7ff210008000+46000] Jul 9 15:13:36 n4 systemd: ceph-osd@2.service: main process exited, code=killed, status=11/SEGV Jul 9 15:13:36 n4 systemd: Unit ceph-osd@2.service entered failed state. Jul 9 15:13:36 n4 systemd: ceph-osd@2.service failed. # ceph --version ceph version 13.2.0 (79a10589f1f80dfe21e8f9794365ed98143071c4) mimic (stable) # cat /etc/centos-release CentOS Linux release 7.5.1804 (Core) # uname -r 3.10.0-862.3.3.el7.x86_64 /Steffen _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com