Hi Richard! Glad to read that! Wow, I would never had thought about that, so I write it somewhere in my head, very good to know! And it makes so much sense by the way... Thanks for sharing this.
Best regards, Pascal. -----Message d'origine----- De : [email protected] [mailto:[email protected]] De la part de Richard Stockton Envoyé : lundi 20 juin 2011 21:45 À : [email protected] Objet : Re: [DRBD-user] Sudden system load [SOLVED!] Our problem was a sudden system load that bogged down our DRBD servers for 13-14 hours daily. The problem turned out to be in the batteries on the RAID controllers. When the batteries are low and unable to fully charge, they force the RAID system into write-through mode instead of write-back mode while they attempt to re-charge/adjust. This slowed down everything and caused our mysterious increased system load. Once we replaced the batteries, system load returned to normal. We still have one drive doing 10 times the writes as the other, but performance is no longer affected, so finding the cause of that problem is no longer as critical (but we continue to investigate). I would like to thank those on the list who tried to help, we really do appreciate the effort. Thanks again. - Richard _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
