Hitachi Dynamic Link Manager Software Users Guide for Linux

2. Connect the cable.
If the cable is broken, replace it.
3. Create the SCSI device for the path to be restored.
Since you restore the path without restarting, the path for the SCSI
device which was in disconnected status during bootup will not be created
and you must execute the command for adding a device, shown in the
following table, to manually create the SCSI device.
Table 4-4 Add SCSI Devices
Purpose Command
Add a device
(for FC-SAN
environments)
• When using a QLogic HBA driver on Red Hat Enterprise Linux
AS4/ES4 Update 1, execute the commands in the following
order:
# echo "scsi-qlascan" > /proc/scsi/driver-name/n
# cat /proc/scsi/driver-name/n
View the Id:Lun part, which is output under SCSI LUN
Information:, of the output command result, and then
execute the following command based on the target ID of the
added device:
# echo "scsi add-single-device a b c d" > /proc/
scsi/scsi
• When using an Emulex HBA driver on Red Hat Enterprise
Linux AS4/ES4 Update 1, execute the following command:
# echo "scsi add-single-device a b c d" > /proc/
scsi/scsi
• When using any of the following OS and HBA driver
combinations:
- Red Hat Enterprise Linux AS4/ES4 Update 3 or later and a
QLogic HBA driver
- Red Hat Enterprise Linux 5 or Red Hat Enterprise Linux 6
and a QLogic HBA driver
- SUSE LINUX Enterprise Server and a QLogic HBA driver
- Red Hat Enterprise Linux AS4/ES4 Update 3 or later and an
Emulex HBA driver
- Red Hat Enterprise Linux 5 or Red Hat Enterprise Linux 6
and an Emulex HBA driver
- SUSE LINUX Enterprise Server and an Emulex HBA driver
- Red Hat Enterprise Linux 5 or Red Hat Enterprise Linux 6
and a Brocade HBA driver
- SUSE LINUX Enterprise Server and a Brocade HBA driver
Execute the following command:
# echo "- - -" > /sys/class/scsi_host/hostn/scan
Execute the following command to check whether the OS has
recognized any devices:
# cat /proc/scsi/scsi
If the OS has not recognized any devices, execute the
following commands in the order shown:
# echo "1" > /sys/class/fc_host/hostn/issue_lip
4-68
HDLM Operation
Hitachi Dynamic Link Manager (for Linux®) User Guide