Hello, I am testing a SCSI/SAS target with a block size of 4K. I noticed that scsi_get_lba which calls blk_rq_pos is returning an incorrect LBA. The returned LBA value is 8x the actual LBA specified in the CDB: The following "end_request:" message is printed from blk-core.c: [ 812.451579] sd 6:0:0:0: [sdb] [ 812.451582] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 812.451585] sd 6:0:0:0: [sdb] [ 812.451587] Sense Key : Aborted Command [current] [ 812.451591] sd 6:0:0:0: [sdb] [ 812.451593] Add. Sense: No additional sense information [ 812.451596] sd 6:0:0:0: [sdb] CDB: [ 812.451597] Write(10): 2a 20 00 00 03 e8 00 00 01 00 [ 812.451606] end_request: I/O error, dev sdb, sector 8000 Above CDB has LBA=0x3e8 which is 1000d. Printed sector size above is 8000d I, also, noticed that several drivers use the scsi_get_lba inline in scsi_cmnd.h to set/check ref tag for DIF. On a 4K device, this is resulting in an incorrect ref tag. Tested with kernel 3.7.5. Regards, --sami -- 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
