Hi, This question came up in another thread, but buried at the end so I thought it would be worth pulling out and asking explicitly. I have a 6-disk RAID5 array made up of 6 x 250GB Maxtor SATA drives (5 + 1 hot spare) Suppose one fails. What is the process I need to follow to replace the faulty disk? Here's my best guess so far: (assume /dev/sdc has failed). Shutdown server. Pull dead drive Insert new drive Boot up server Create partition table on new drive (all my drives are partitioned identically): # sfdisk -d /dev/sda | sfdisk /dev/sdc (Is it necessary to explicitly "remove" the failed device from the arrays (before shutting down?) and to add it back in after replacing the disk?) For example, would this work?: # mdadm /dev/md5 -f /dev/sdc2 -r /dev/sdc2 -a /dev/sdc2 According to my understanding, this does the following: 1. Marks /dev/sdc2 as faulty in /dev/md5 (if the drive has failed it should already be marked faulty??) 2. removes /dev/sdc2 from /dev/md5 3. Adds /dev/sdc2 to /dev/md5 Am I missing any important steps? R. -- http://robinbowes.com - 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
