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Re: [Xen-devel] [RFC PATCH] Data integrity extension support for xen-block

David Vrabel writes ("Re: [RFC PATCH] Data integrity extension support for 
> You need to read the relevant SCSI specification and find out what
> interfaces and behaviour the hardware has so you can specify compatible
> interfaces in blkif.
> My (brief) reading around this suggests that the integrity data has a
> specific format (a CRC of some form) and the integrity data written for
> sector S and retrieved verbatim when sector S is re-read.

I think it's this:


In which case AFAICT the format is up to the guest (ie the operating
system or file system) and it's opaque to the host (the storage) -
unless the guest consents, of course.


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