On Thu, Nov 10, 2005 at 10:05:28 +1000, George Pappas <george@xxxxxxxxxxxxxx> wrote: > > /proc/mdstat reveals that the Raid Array has lost the sda drive, this > had occured earlier but only dropped part of the sda drive not all. I This is normal. Partitions that have problems get dropped. > was able to add the drive back by using mdadm... but 2 days later this > has happened again. Has anyone else had this problem? or is able to > guide to further diagnosing my situation. My guess is that you had some errors on the disk. Are you using smartd to monitor the drives? If not, you should be. You can use smartctl to see what the drives have to say for themselves. If there are some bad sectors, you will generally need to rewrite them so that the drive can remap them. One way to do this is to pull the partition containing the bad sectors out of the arrary and use dd to rewrite the bad sector(s) and see if smartctl says that things have been cleaned up. Once they have add the partition back into the array.
