Carl Wilhelm Soderstrom wrote:

>>>>> Mdadm is pretty good about warning you if you try something stupid. 
>>> True; but I've still managed to blow away data accidentally using it. :)
>>> (Fortunately, I still had a copy of the data on another disk's partition; I
>>> sync'ed the wrong partitions together).
>> Was that back in the old raidtab days?  
> 
> No, somewhat more recent. 3-4 years ago I think. I think I typo'ed the mdadm
> command and sync'ed /dev/sda3 to /dev/sdb1 instead of /dev/sdb3 or something
> equally stupid. No real loss, I fixed it right away; but one can probably
> contrive a disastrous situation. 
> 
> There is value in that kind of power tho; as the saying goes "Unix does not
> stop you from doing stupid things, because stopping you from doing stupid
> things would also stop you from doing clever things."

That can happen if you have more than one extra partition, I guess. 
Mdadm will warn you if you try to --add a partition that is too small, 
part of a different array, or already mounted.

-- 
   Les Mikesell
    les AT futuresource DOT com


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