List LUNs attached to HBA/Disk controllers in Solaris 10

As a system administrator, every now and then you may come across situations wherein your SAN admin presents you some storage (LUNS) and you can’t find where the hell has it gone. The following are some of the ways to list the LUNS presented on a controller or all the controllers on the server.

1. Using fcinfo

In Solaris 10, you can use the “fcinfo” utility which is a 2 step process to identify the Luns presented to the server.

1. Find the HBA port WWN number on the server:

# fcinfo hba-port

This command will show the HBA Port WWN among other information like the Node WWN, Device name, manufacturer, firmware, driver details etc.

root@myserver:/root # fcinfo hba-port
HBA Port WWN: 21000022ff0553e9
OS Device Name: /dev/cfg/c5
Manufacturer: QLogic Corp.
Model: 371-4324-02
Firmware Version: 05.03.02
FCode/BIOS Version: BIOS: 2.02; fcode: 2.03; EFI: 2.01;
Serial Number: 0402R00-1102885753
Driver Name: qlc
Driver Version: 3.00p
Type: L-port
State: online
Supported Speeds: 2Gb 4Gb 8Gb
Current Speed: 4Gb
Node WWN: 20000022ff0553e9

Here 21000022ff0553e9 is the WWN number for the HBA port.

2. List SCSI targets for the remote port attached to the HBA port attached to the above.

# fcinfo -sl -p HBA-Port-WWN

root@myserver:/root # fcinfo remote-port -sl -p 21000022ff0553e9
Remote Port WWN: 202400a0b8744072
Active FC4 Types:
SCSI Target: yes
Node WWN: 200400a0b8744072
Link Error Statistics:
Link Failure Count: 1
Loss of Sync Count: 2
Loss of Signal Count: 72
Primitive Seq Protocol Error Count: 0
Invalid Tx Word Count: 0
Invalid CRC Count: 0
LUN: 0
Vendor: SUN
Product: LCSM100_F
OS Device Name: /dev/rdsk/c5t202400A0B8744072d0s2
LUN: 2 Vendor: SUN
Product: LCSM100_F
OS Device Name: /dev/rdsk/c5t202400A0B8744072d2s2
LUN: 31 Vendor: SUN
Product: Universal Xport
OS Device Name: /dev/rdsk/c5t202400A0B8744072d31s2

Here, LUN0 and LUN2 are the actual disks and LUN31 is the Command device for the Storage controller

2. Using cfgadm

You can also find the above information using the “cfgadm” utility. One of the following commands should reveal the LUNS attached to the controller. Although the later works only on Solaris 10.

# cfgadm -al -o show_FCP_dev c5

or

# cfgadm -al -o show_SCSI_LUNS c5

where c5 is the controller. If you do not mentioned the controller, it then displays for every single disk controller on the server.

root@myserver:/root # cfgadm -al -o show_FCP_dev c5
Ap_Id Type Receptacle Occupant Condition
c5 fc-private connected configured unknown
c5::202400a0b8744072,0 disk connected configured unknown
c5::202400a0b8744072,2 disk connected configured unknown
c5::202400a0b8744072,31 disk connected configured unknown

root@myserver:/root # cfgadm -al -o show_SCSI_LUN c5
Ap_Id Type Receptacle Occupant Condition
c5 fc-private connected configured unknown
c5::202400a0b8744072,0 disk connected configured unknown
c5::202400a0b8744072,2 disk connected configured unknown
c5::202400a0b8744072,31 disk connected configured unknown

Share your thoughts, if you know more ways of doing this.