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On 2/12/2013 1:43 PM, Mikael Abrahamsson wrote:

On Tue, 12 Feb 2013, Phillip Susi wrote:

quoted

You move the superblock, then shrink the partition...

As far as I know, mdadm has no code to shrink partitions?

Of course not, you would use fdisk or parted or whatever else to do that.

quoted

But it looks like mdadm doesn't move the superblock even though
it no longer is using the full partition.

I think that is perfectly reasonable. Otherwise the superblock
wouldn't be found next time if the partition wasn't resized.

Yes, but the way it is now the superblock won't be found if the
partition *is* resized.  What is the use of reducing the amount of the
partition mdadm is using if you can't then shrink the partition itself?


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