On Wed, Dec 9, 2009 at 10:42 PM, Marco Peereboom <sl...@peereboom.us> wrote:
> It isn't identical because softraid does not initialize raid 1 because
> it doesn't matter.  So all written data is the same but areas where the
> volume has not been written before will vary on the individual disks.

What happens if the written data is not the same for some reason (and
what's the likelihood of this happening)? How does the OS and fsck
behave in this case?

> Kind of.  The short is that you can't guarantee this.  Even if you
> detect that 2 areas that should have been the same but are not you
> really have no way of figuring out which one is correct (if any).

> Note: this whole story is different with RAID 5 & RAID 6.

Parity helps quite a bit, heh?

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