scsi: disable automatic target scan
On larger installations it is useful to disable automatic LUN scanning,
and only add the required LUNs via udev rules. This can speed up bootup
dramatically.
This patch introduces a new scan module parameter value 'manual', which
works like 'none', but can be overridden by setting the 'rescan' value
from scsi_scan_target to 'SCSI_SCAN_MANUAL'. And it updates all
relevant callers to set the 'rescan' value to 'SCSI_SCAN_MANUAL' if
invoked via the 'scan' option in sysfs.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/s390/scsi/zfcp_unit.c b/drivers/s390/scsi/zfcp_unit.c
index 157d3d2..08bba7c 100644
--- a/drivers/s390/scsi/zfcp_unit.c
+++ b/drivers/s390/scsi/zfcp_unit.c
@@ -26,7 +26,8 @@
lun = scsilun_to_int((struct scsi_lun *) &unit->fcp_lun);
if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
- scsi_scan_target(&rport->dev, 0, rport->scsi_target_id, lun, 1);
+ scsi_scan_target(&rport->dev, 0, rport->scsi_target_id, lun,
+ SCSI_SCAN_RESCAN);
}
static void zfcp_unit_scsi_scan_work(struct work_struct *work)
