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

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

drivers/scsi/scsi_error.c

+4 −0
Original line number Diff line number Diff line
@@ -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,

drivers/scsi/scsi_lib.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

include/scsi/scsi_device.h

+2 −1
Original line number Diff line number Diff line
@@ -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

};