diff options
| author | Hannes Reinecke <hare@suse.de> | 2016-03-17 08:39:45 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 16:57:09 -0400 |
| commit | 1d64508810d8d15867251c75a68d7250278ce2bd (patch) | |
| tree | a7f43abdbf163aad5545eeea1d3b840c4adb2954 /drivers/scsi/scsi_transport_fc.c | |
| parent | 216fad91387aab7c9e69fe0854d843f012968748 (diff) | |
| download | lwn-1d64508810d8d15867251c75a68d7250278ce2bd.tar.gz lwn-1d64508810d8d15867251c75a68d7250278ce2bd.zip | |
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/scsi/scsi_transport_fc.c')
| -rw-r--r-- | drivers/scsi/scsi_transport_fc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index 8a8822641b26..bf28c688c72a 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -2110,7 +2110,8 @@ fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun) if ((channel == rport->channel) && (id == rport->scsi_target_id)) { spin_unlock_irqrestore(shost->host_lock, flags); - scsi_scan_target(&rport->dev, channel, id, lun, 1); + scsi_scan_target(&rport->dev, channel, id, lun, + SCSI_SCAN_MANUAL); return; } } @@ -3277,7 +3278,8 @@ fc_scsi_scan_rport(struct work_struct *work) (rport->roles & FC_PORT_ROLE_FCP_TARGET) && !(i->f->disable_target_scan)) { scsi_scan_target(&rport->dev, rport->channel, - rport->scsi_target_id, SCAN_WILD_CARD, 1); + rport->scsi_target_id, SCAN_WILD_CARD, + SCSI_SCAN_RESCAN); } spin_lock_irqsave(shost->host_lock, flags); |