On Sun, Aug 19, 2012 at 12:38:43PM -0400, Martin K. Petersen wrote: > >>>>> "Pasi" == Pasi Kärkkäinen <pasik@xxxxxx> writes: > > Pasi> So physically the disk is using 520 bytes/sector (and needs to > Pasi> support that), but logically the HBA presents 512 bytes/sector + > Pasi> PI.. is that correct? > > Yep. The beauty of PI is that we can store the extra stuff without > having to deal with weird block sizes. > Yep. > > Pasi> I guess what I'm asking is: Can I use sg_format to enable > Pasi> checksums/protection on any disk that physically supports 520 > Pasi> bytes/sector, or does the disk need to have special T10 data > Pasi> protection support aswell? > > The disk needs to support T10 PI (PROTECT=1 in the Standard Inquiry VPD > page). We don't support driving the HBA in PI mode with a non-PI target. > Ok, good to know. Thanks! -- Pasi -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
