Li, > The discard mode has been negotiated during the SCSI probe. If the > mode is temporarily changed from UNMAP to WRITE SAME with UNMAP, IO > ERROR may occur because the target may not implement WRITE SAME with > UNMAP. Keep the discard mode stable to fix this issue. This is fine with me. It's a subset of what I have pending in my discovery series but it doesn't look like that will ready in time for 6.11. So let's just grab this for now. Jens: Probably easiest if you take this through the block-limits branch. Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> -- Martin K. Petersen Oracle Linux Engineering