Attached 2 x brand new Western Digital 8TB USB 3.0 drives awhile back and ran some file copy tests and was getting these warnings-- is there any way to avoid these warnings? I did confirm with parted that the partition was aligned but this appears to be something related to the firmware on the device according to [1] and [2]? [1] https://patchwork.kernel.org/patch/9573203/ [2] https://patchwork.kernel.org/patch/9597797/ Part of the patch in [2] - if the firmware is buggy is there a patch or workaround for these drives (when used in the USB enclosures) to avoid this issue? + default: + /* + * In case of bogus fw or device, we could end up having + * an unaligned partial completion. Check this here and force + * alignment. + */ + resid = scsi_get_resid(SCpnt); + if (resid & (sector_size - 1)) { + sd_printk(KERN_INFO, sdkp, + "Unaligned partial completion (resid=%u, sector_sz=%u)\n", + resid, sector_size); + resid = min(scsi_bufflen(SCpnt), + round_up(resid, sector_size)); + scsi_set_resid(SCpnt, resid); + } Errors: Jul 18 16:25:02 name kernel: [87305.605993] sd 8:0:0:0: [sdg] Unaligned partial completion (resid=78, sector_sz=512) Jul 18 16:25:02 name kernel: [87305.605993] sd 8:0:0:0: [sdg] Unaligned partial completion (resid=78, sector_sz=512) Jul 18 16:25:15 name kernel: [87318.292262] sd 7:0:0:0: [sdf] Unaligned partial completion (resid=78, sector_sz=512) Jul 18 16:25:15 name kernel: [87318.292262] sd 7:0:0:0: [sdf] Unaligned partial completion (resid=78, sector_sz=512)
