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| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2010-12-08 17:30:46 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-12-21 12:24:48 -0600 |
| commit | 0d81b4e8dcc4177726f30a1ac8df1f726d2a7c0c (patch) | |
| tree | f8179d83b91478f07456d78981bf95dcd1c3dc5e /drivers/s390/scsi | |
| parent | 51780d2c38a7294c2c302ae9d2ea517bd4153dec (diff) | |
| download | blackbird-op-linux-0d81b4e8dcc4177726f30a1ac8df1f726d2a7c0c.tar.gz blackbird-op-linux-0d81b4e8dcc4177726f30a1ac8df1f726d2a7c0c.zip | |
[SCSI] zfcp: Add allow_lun_scan module parameter
The zfcpdump tool requires a method to attach exactly one LUN. The
easiest way to achieve this is to add a new zfcp module parameter.
When allow_lun_scan is set to "false", zfcp only accepts LUNs that
have been configured through the unit_add sysfs interface.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi')
| -rw-r--r-- | drivers/s390/scsi/zfcp_scsi.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 59a653d15a19..ddb5800823a9 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -30,6 +30,10 @@ module_param_named(dif, enable_dif, bool, 0600); MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support"); #endif +static bool allow_lun_scan = 1; +module_param(allow_lun_scan, bool, 0600); +MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs"); + static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth, int reason) { @@ -130,6 +134,7 @@ static int zfcp_scsi_slave_alloc(struct scsi_device *sdev) struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); struct zfcp_port *port; struct zfcp_unit *unit; + int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE; port = zfcp_get_port_by_wwpn(adapter, rport->port_name); if (!port) @@ -139,7 +144,7 @@ static int zfcp_scsi_slave_alloc(struct scsi_device *sdev) if (unit) put_device(&unit->dev); - if (!unit && !(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) { + if (!unit && !(allow_lun_scan && npiv)) { put_device(&port->dev); return -ENXIO; } |
