On 20/04/16 13:08, Bob Liu wrote:
>
>
> The "feature-data-integrity" could be extended to "unsigned int" instead of
> "bool",
> so as to report all DIX formats backend supports.
I think it would be preferable to have something string based. I think
Linux reports the formats using a string enco
On 04/20/2016 04:59 PM, David Vrabel wrote:
> On 20/04/16 08:26, Bob Liu wrote:
>>
>> /*
>> + * Recognized only if "feature-data-integrity" is present in backend xenbus
>> info.
>> + * A request with BLKIF_OP_DIX_FLAG indicates the following request is a
>> special
>> + * request which only con
On 20/04/16 08:26, Bob Liu wrote:
>
> /*
> + * Recognized only if "feature-data-integrity" is present in backend xenbus
> info.
> + * A request with BLKIF_OP_DIX_FLAG indicates the following request is a
> special
> + * request which only contains integrity-metadata segments of current
> reque
* What's data integrity extension(DIX) and why?
Modern filesystems feature checksumming of data and metadata to protect against
data corruption. However, the detection of the corruption is done at read time
which could potentially be months after the data was written. At that point the
original d
