Hi, I have a typical beginner's question: If I want to mirror a filesystem that is available on multiple cluster nodes, I cannot use MD-RAID, because that might corrupt data if activated on multiple nodes simultaneously. OTOH when using LVM mirroring (cLVM) I have two choices:
1) --mirrorlog core: This will resnyc all the data on every activation (Windows mode) 8-( 2) --morrorlog device: This will require ONE additional device for the mirror log Obviously if you want desaster-tolerance, where would you put that (unmirrored) mirror log? I come from HP-UX where LVM had the cleverness that MD-RAID has (used a part of the physical volume (or logical volume) for the mirror log). Still the cluster software ensured that a volume group is not activated on more than one node. Somehow the need for a third independent device for mirroring seems strange. Regards, Ulrich _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
