Commit 511e44f4 authored Jul 17, 2008 by Martin K. Petersen Committed by James Bottomley Jul 26, 2008

[SCSI] Do not retry a request whose data integrity check failed



If initiator or target reject the I/O due to DIF errors there is no
point in retrying.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

parent 7027ad72

drivers/scsi/scsi_error.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -344,6 +344,9 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
		return /* soft_error */ SUCCESS;

		case ABORTED_COMMAND:
		if (sshdr.asc == 0x10) /* DIF */
		return SUCCESS;

		return NEEDS_RETRY;
		case NOT_READY:
		case UNIT_ATTENTION:

drivers/scsi/scsi_lib.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -950,10 +950,15 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
		* 6-byte command.
		*/
		scsi_requeue_command(q, cmd);
		return;
		} else {
		} else if (sshdr.asc == 0x10) /* DIX */
		scsi_end_request(cmd, -EIO, this_count, 0);
		else
		scsi_end_request(cmd, -EIO, this_count, 1);
		return;
		case ABORTED_COMMAND:
		if (sshdr.asc == 0x10) { /* DIF */
		scsi_end_request(cmd, -EIO, this_count, 0);
		return;
		}
		break;
		case NOT_READY: