Mandi! M Ranga Swami Reddy In chel di` si favelave... > Hello - Recevenlt we had an issue with storage node's battery failure, which > cause ceph client IO dropped to '0' bytes. Means ceph cluster couldn't perform > IO operations on the cluster till the node takes out. This is not expected from > Ceph, as some HW fails, those respective OSDs should mark as out/down and IO > should go as is.. > Please let me know if anyone seen the similar behavior and is this issue > resolved? 'battery' mean 'CMOS battery'? OSDs and MONs need accurate clock sync between them. So, if a node reboot with a clock skew more than (AFAI Remember well) 5 seconds, OSD does not start. Provide a stable NTP server for all your OSDs and MONs, and restart OSDs after clock are in sync. -- dott. Marco Gaiarin GNUPG Key ID: 240A3D66 Associazione ``La Nostra Famiglia'' http://www.lanostrafamiglia.it/ Polo FVG - Via della Bontà, 7 - 33078 - San Vito al Tagliamento (PN) marco.gaiarin(at)lanostrafamiglia.it t +39-0434-842711 f +39-0434-842797 Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA! http://www.lanostrafamiglia.it/index.php/it/sostienici/5x1000 (cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA) _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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