Re: [dm-devel] [PATCH 0/4] dm verity: add support for error correction

From: Sami Tolvanen
Date: Fri Nov 06 2015 - 15:28:03 EST

On Fri, Nov 06, 2015 at 08:20:15PM +0100, Zdenek Kabelac wrote:
> i.e. you have 1G of space - you want to give 250MB as 'redundancy' -
> so create 4 partition....

We cannot afford to set aside 25% of read-only partition space for
redundancy on mobile devices, and would rather not impact performance
any more than dm-verity already does. With error correction we have
0.8% space overhead in our use case and no performance degradation if
the partition is not corrupted.

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