Commit 14c3e677 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by James Bottomley

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: default avatarHannes Reinecke <hare@suse.de>
Reviewed-by: default avatarEwan D. Milne <emilne@redhat.com>
Reviewed-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Odin.com>
parent e819cdb1
......@@ -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,
......
......@@ -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;
......
......@@ -57,9 +57,10 @@ enum scsi_device_event {
SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED, /* 38 07 UA reported */
SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED, /* 2A 01 UA reported */
SDEV_EVT_LUN_CHANGE_REPORTED, /* 3F 0E UA reported */
SDEV_EVT_ALUA_STATE_CHANGE_REPORTED, /* 2A 06 UA reported */
SDEV_EVT_FIRST = SDEV_EVT_MEDIA_CHANGE,
SDEV_EVT_LAST = SDEV_EVT_LUN_CHANGE_REPORTED,
SDEV_EVT_LAST = SDEV_EVT_ALUA_STATE_CHANGE_REPORTED,
SDEV_EVT_MAXBITS = SDEV_EVT_LAST + 1
};
......
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