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[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>
This commit is contained in:
Martin K. Petersen 2008-07-17 04:28:33 -04:00 committed by James Bottomley
parent 7027ad72a6
commit 511e44f42e
2 changed files with 10 additions and 2 deletions
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3
drivers/scsi/scsi_error.c
View File

@ -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:

9
drivers/scsi/scsi_lib.c
View File

@ -950,9 +950,14 @@ 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;