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authorHannes Reinecke <hare@suse.de>2016-03-17 08:39:45 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-11 16:57:09 -0400
commit1d64508810d8d15867251c75a68d7250278ce2bd (patch)
treea7f43abdbf163aad5545eeea1d3b840c4adb2954 /drivers/s390/scsi
parent216fad91387aab7c9e69fe0854d843f012968748 (diff)
downloadlinux-1d64508810d8d15867251c75a68d7250278ce2bd.tar.bz2
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>
Diffstat (limited to 'drivers/s390/scsi')
-rw-r--r--drivers/s390/scsi/zfcp_unit.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/s390/scsi/zfcp_unit.c b/drivers/s390/scsi/zfcp_unit.c
index 157d3d203ba1..08bba7ce7cef 100644
--- a/drivers/s390/scsi/zfcp_unit.c
+++ b/drivers/s390/scsi/zfcp_unit.c
@@ -26,7 +26,8 @@ void zfcp_unit_scsi_scan(struct zfcp_unit *unit)
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)