From 29cfc2ab71d9642c2f4fda6cd278309cc253ff82 Mon Sep 17 00:00:00 2001
From: Martin Wilck <mwilck@suse.com>
Date: Wed, 18 Apr 2018 01:35:10 +0200
Subject: scsi: devinfo: add BLIST_RETRY_ITF for EMC Symmetrix

EMC Symmetrix returns 'internal target error' for a variety of
conditions, most of which will be transient.  So we should always retry
it, even with failfast set.  Otherwise we'd get spurious path flaps with
multipath.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
 drivers/scsi/scsi_error.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'drivers/scsi/scsi_error.c')

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 946039117bf4..633b198ed895 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -38,6 +38,7 @@
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_ioctl.h>
 #include <scsi/scsi_dh.h>
+#include <scsi/scsi_devinfo.h>
 #include <scsi/sg.h>
 
 #include "scsi_priv.h"
@@ -525,6 +526,9 @@ int scsi_check_sense(struct scsi_cmnd *scmd)
 		if (sshdr.asc == 0x10) /* DIF */
 			return SUCCESS;
 
+		if (sshdr.asc == 0x44 && sdev->sdev_bflags & BLIST_RETRY_ITF)
+			return ADD_TO_MLQUEUE;
+
 		return NEEDS_RETRY;
 	case NOT_READY:
 	case UNIT_ATTENTION:
-- 
cgit