How to reset Host Bus Adapter on Linux/Unix

Use the following method to offline/online or scan the specific HBA. This can be done without reloading the HBA module, nor rebooting the system.Let's check  How to reset  Host Bus Adapter?

Oracle Solaris

• Identify the HBA which needs to reset or scan

#luxadm -e port
/devices/pci@0/pci@0/pci@8/pci@0/pci@9/SUNW,emlxs@0/fp@0,0:devctl NOT CONNECTED
/devices/pci@0/pci@0/pci@8/pci@0/pci@a/SUNW,emlxs@0/fp@0,0:devctl NOT CONNECTED
#fcinfo hba-port
HBA Port WWN: 10000000c977600a >>WWN number can be a parameter to find out which HBA
OS Device Name: /dev/cfg/c2
Manufacturer: Emulex
Model: LPe11000-S
Firmware Version: 2.72a2 (Z3D2.72A2)
FCode/BIOS Version: Boot:5.02a1 Fcode:1.50a9
Serial Number: 0999BG0-082200032S
Driver Name: emlxs
Driver Version: 2.60k (2011.
Type: unknown
State: offline
Supported Speeds: 1Gb 2Gb 4Gb
Current Speed: not established
Node WWN: 20000000c977600a
#ls -ld /dev/cfg/c2|awk ‘{print $11}’
#luxadm -e port|grep pci@8/pci@0/pci@9/SUNW,emlxs@0/fp
/devices/pci@0/pci@0/pci@8/pci@0/pci@9/SUNW,emlxs@0/fp@0,0:devctl NOT CONNECTED

• Reset HBA

#luxadm -e forcelip /devices/pci@0/pci@0/pci@8/pci@0/pci@9/SUNW,emlxs@0/fp@0,0:devctl


• Identify the HBA which need to reset or scan

# cat /sys/class/fc_host/host3/port_name

• Reset HBA

#echo 1 > /sys/class/fc_host/host3/issue_lip


• Identify the HBA which need to reset or scan

#ioscan -funC fc
Class I H/W Path Driver S/W State H/W Type Description
fc 0 32/0/2/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
fc 1 32/0/2/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
fc 2 32/0/2/2/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
#fcmsutil /dev/fcd0
Vendor ID is = 0x1077
Device ID is = 0x2532
PCI Sub-system Vendor ID is = 0x103C
PCI Sub-system ID is = 0x3263
PCI Mode = PCI Express x4
ISP Code version = 5.6.7
ISP Chip version = 2
Link Speed = 8Gb
Local N_Port_id is = 0x011500
Previous N_Port_id is = None
N_Port Node World Wide Name = 0x50014380062e5f55
N_Port Port World Wide Name = 0x50014380062e5f54
Switch Port World Wide Name = 0x200100053328dedc
Switch Node World Wide Name = 0x100000053328dedc
N_Port Symbolic Port Name = TEST_fcd0
N_Port Symbolic Node Name = TEST_HP-UX_B.11.31
Driver state = ONLINE
Hardware Path is = 32/0/2/0/0/0/0
Maximum Frame Size = 2048
Driver-Firmware Dump Available = NO
Driver-Firmware Dump Timestamp = N/A
NPIV Supported = YES
Driver Version = @(#) fcd B.11.31.1407 Jul 4 2014

• How to disable/enable HBA fcmsutil?

#fcmsutil /dev/fcd0 disable
#fcmsutil /dev/fcd0 enable


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