Hi Martin, Did you get a chance to merge your changes into mainline? I'm using 3.10.4 and am still seeing this issue. Thanks, Kamaljit -----Original Message----- From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi-owner@xxxxxxxxxxxxxxx] On Behalf Of Martin K. Petersen Sent: Tuesday, February 12, 2013 10:09 AM To: Sami Waheed Cc: linux-scsi@xxxxxxxxxxxxxxx Subject: Re: Incorrect LBA Returned from scsi_get_lba() and blk_rq_pos() (Possible DIF Impact) >>>>> "Sami" == Sami Waheed <Sami.Waheed@xxxxxxxx> writes: Sami> I am testing a SCSI/SAS target with a block size of 4K. I noticed Sami> that scsi_get_lba which calls blk_rq_pos is returning an incorrect Sami> LBA. The returned LBA value is 8x the actual LBA specified in the Sami> CDB: The block layer always uses 512-byte sectors internally, regardless of the logical block size of the actual disk. Sami> I, also, noticed that several drivers use the scsi_get_lba inline Sami> in scsi_cmnd.h to set/check ref tag for DIF. On a 4K device, this Sami> is resulting in an incorrect ref tag. I have some patches in the pipeline that fixes this. They also add support for protection intervals different from the logical block size. -- Martin K. Petersen Oracle Linux Engineering -- 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 -- 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
