I can reproduce this with kernel 5.2.2 and a WD drive (WD40EZRZ-22GXCB0) in a USB 3.0 enclosure featuring a JMicron SATA Bridge (ID 152d:2329) I'm also interested in getting rid of the warnings. * Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote: > 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) -- left blank, right bald
