On Mon, Jun 3, 2013 at 11:35 AM, Martin K. Petersen <martin.petersen@xxxxxxxxxx> wrote: >>>>>> "hpa" == H Peter Anvin <hpa@xxxxxxxxx> writes: > > hpa> OK, so the device here says don't do this again, but fails the > hpa> request anyway expecting the block device to pick up the slack. > > Yes, the block layer function will resort to writing out zeroes directly > in this case. > > MD should not consider a rejected WRITE SAME a failure. What should md do in the partial success case? Seems to be a layering violation to assume that the block layer will retry with zeroes. Maybe just act on BIO_QUIET to retry the write with REQ_WRITE_SAME cleared? -- Dan -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
