On Sun, Aug 19, 2012 at 11:18:57AM -0400, Martin K. Petersen wrote: > >>>>> "Pasi" == Pasi Kärkkäinen <pasik@xxxxxx> writes: > > Pasi> Btw do you know which LSI mpt2sas HBAs support T10 DIF stuff? > Pasi> (using 520 or 528 bytes/sector drives with checkums). > > Pasi> LSI SAS2008 based? SAS2308 based? > > SAS2008 and beyond. > Ok, good. > 512-byte logical blocks + 8 bytes of PI. > So physically the disk is using 520 bytes/sector (and needs to support that), but logically the HBA presents 512 bytes/sector + PI.. is that correct? I guess what I'm asking is: Can I use sg_format to enable checksums/protection on any disk that physically supports 520 bytes/sector, or does the disk need to have special T10 data protection support aswell? > Linux does not support logical block sizes that are not powers of two. > Yep. 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
