[ale] Software RAID1 rebuild after HDD failure (How to do?)

[Jim Popovitch]

Joe Steele wrote:
> 
> By way of comparison:  when first building a new raid array, you 
> partition the drives, then you run mdadm to assemble the array.  Only 
> then do you format the assembled array.  The device that gets formated 
> is /dev/md0 (the raid device), not /dev/hda1 (a partition that is part 
> of the array).
 >
> If a drive fails, its partition(s) are removed from the array, a new 
> drive is installed with partitions of the same size as those of the 
> failed drive, and the partition(s) are added back to the array.  At that 
> point, the raid system begins to rebuild the data on the partitions, 
> which includes rebuilding whatever formatting belongs there.

Good point Joe.  Ryan, just make sure you don't re-format /dev/md0, let 
mdadm sync the data from the first drive to the second drive. ;-)

-Jim P.