Back in March, Neil Brown wrote: > > Well.... it's not straight forward at all. > > Firstly: it can only work if all your drives are the same size > (rounded to 64K). If they aren't raid0 will use all the available > space on each drive, while raid5 will only use the amount that is > available on the first drive. > > If that condition is met, then you can safely convert to a raid4 with > one extra (missing) device by simply creating an array with the same > drives (so you have to stop and restart the array - you cannot do that > bit while the array is live). You seem to need --assume-clean > to create the raid4 degraded... That is probably a bug in mdadm. > [rest of procedure deleted] I just wanted to let you know we performed this procedure on mirrors1.kernel.org. It was successful, and saved us from copying 3 TB of data across the Internet. -hpa - 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
