>>>>> "Justin" == Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> writes: Justin> Is a bitmap created by default with 1.x? I remember seeing Justin> reports of 15-30% performance degradation using a bitmap on a Justin> RAID5 with 1.x. Not according to the mdadm man page. I'd probably give up that performance if it meant that re-syncing an array went much faster after a crash. I certainly use it on my RAID1 setup on my home machine. John - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html