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Re: [dm-devel] block mapping



On Thu, Sep 29, 2011 at 4:55 PM, Christoph Hellwig <hch infradead org> wrote:
> On Thu, Sep 29, 2011 at 04:35:44PM +0300, Kasatkin, Dmitry wrote:
>> Hello All,
>>
>> I would like to implement such block device, which can store
>> additional information along with the block data.
>> For example. so if file system has 4k block, I would like to store
>> 4k+256b of additional information...
>>
>> Can such block device be implemented with device mapper?
>
> Given your other recent posts you probably want to take a look at
> dm-verity:
>
>        http://selinuxproject.org/~jmorris/lss2011_slides/LSS_11_Integrity_checked_block_devices.pdf
>

Yes... I know this..
That target stores integrity data on a separate block device.
I am looking to possibility to store data with the block...

Thanks
> (even if that's not strictly what you are asking for here)
>
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