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authorHannes Reinecke <hare@suse.de>2015-07-06 13:41:53 +0200
committerJames Bottomley <JBottomley@Odin.com>2015-08-26 07:19:57 -0700
commit14c3e677df9fa2e4bf87b9de683452fc140934b2 (patch)
tree7e7f5392ec6e0f53b46027d5af52c046863c2a8a /drivers
parente819cdb198319cccf4af4fc12ac4d796109d8c23 (diff)
downloadlinux-14c3e677df9fa2e4bf87b9de683452fc140934b2.tar.gz
scsi: Add ALUA state change UA handling
Log the ALUA state change unit attention correctly with
the message log and emit an event to allow user-space
tools to react to it.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/scsi_error.c4
-rw-r--r--drivers/scsi/scsi_lib.c4
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index cfadccef045c..d7d28061b31d 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -421,6 +421,10 @@ static void scsi_report_sense(struct scsi_device *sdev,
 			evt_type = SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED;
 			sdev_printk(KERN_WARNING, sdev,
 				    "Mode parameters changed");
+		} else if (sshdr->asc == 0x2a && sshdr->ascq == 0x06) {
+			evt_type = SDEV_EVT_ALUA_STATE_CHANGE_REPORTED;
+			sdev_printk(KERN_WARNING, sdev,
+				    "Asymmetric access state changed");
 		} else if (sshdr->asc == 0x2a && sshdr->ascq == 0x09) {
 			evt_type = SDEV_EVT_CAPACITY_CHANGE_REPORTED;
 			sdev_printk(KERN_WARNING, sdev,
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index dffa91c67f5b..882864f5cbae 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2712,6 +2712,9 @@ static void scsi_evt_emit(struct scsi_device *sdev, struct scsi_event *evt)
 	case SDEV_EVT_LUN_CHANGE_REPORTED:
 		envp[idx++] = "SDEV_UA=REPORTED_LUNS_DATA_HAS_CHANGED";
 		break;
+	case SDEV_EVT_ALUA_STATE_CHANGE_REPORTED:
+		envp[idx++] = "SDEV_UA=ASYMMETRIC_ACCESS_STATE_CHANGED";
+		break;
 	default:
 		/* do nothing */
 		break;
@@ -2815,6 +2818,7 @@ struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type,
 	case SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED:
 	case SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED:
 	case SDEV_EVT_LUN_CHANGE_REPORTED:
+	case SDEV_EVT_ALUA_STATE_CHANGE_REPORTED:
 	default:
 		/* do nothing */
 		break;