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>
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 9603f3e..87bc506 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -161,7 +161,8 @@ static struct {
{"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */
{"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */
{"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
- {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_REPORTLUN2},
+ {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
+ BLIST_REPORTLUN2 | BLIST_RETRY_ITF},
{"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
{"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
{"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 9460391..633b198 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: