From 14c3e677df9fa2e4bf87b9de683452fc140934b2 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 6 Jul 2015 13:41:53 +0200 Subject: [PATCH] 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 Reviewed-by: Ewan D. Milne Reviewed-by: Bart Van Assche Signed-off-by: James Bottomley --- drivers/scsi/scsi_error.c | 4 ++++ drivers/scsi/scsi_lib.c | 4 ++++ include/scsi/scsi_device.h | 3 ++- 3 files changed, 10 insertions(+), 1 deletion(-) 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; diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index ae84b2214d40..50c2a363bc8f 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -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 }; -- 2.39.5