How to find SAN LUNs In Linux

How to find SAN LUNs In Linux?

1. Check FC card.
[root@testserver ~]# lspci -nn | grep "Fibre Channel"
10:00.0 Fibre Channel [0c04]: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA [1077:2432] (rev 03)
[root@testserver ~]#

2. Check if the Module has been loaded or Not.
[root@testserver ~]# lsmod | grep qla
qla2xxx              1262721  1
scsi_transport_fc      83145  1 qla2xxx
scsi_mod              199641  20 mptctl,be2iscsi,ib_iser,iscsi_tcp,bnx2i,libcxgbi,libiscsi2,scsi_transport_iscsi2,scsi_dh,sr_mod,qla2xxx,scsi_transport_fc,sg,usb_storage,libata,mptsas,mptscsih,scsi_transport_sas,sd_mod
[root@testserver ~]#

if no module is found in above command, we can load module.
modprobe -v qla2xxx


3. Use the systool command.
[root@testserver host6]# systool -c fc_host -v host6
Class = "fc_host"

  Class Device = "host6"
  Class Device path = "/sys/class/fc_host/host6"
    fabric_name         = "0x2001547feec13219"
    issue_lip           = <store method only>
    node_name           = "0x2000001b329677fa"
    port_id             = "0x240e00"
    port_name           = "0x2100001b329677fa"
    port_state          = "Online"
    port_type           = "NPort (fabric via point-to-point)
    speed               = "4 Gbit"
    supported_classes   = "Class 3"
    supported_speeds    = "1 Gbit, 2 Gbit, 4 Gbit"
    symbolic_name       = "QLE2460 FW:v5.06.03 DVR:v8.03.07.
    system_hostname     = ""
    tgtid_bind_type     = "wwpn (World Wide Port Name)"
    uevent              = <store method only>

    Device = "host6"
    Device path = "/sys/devices/pci0000:00/0000:00:06.0/0000
      fw_dump             =
      nvram               = "ISP "
      optrom_ctl          = <store method only>
      optrom              =
      reset               = <store method only>
      sfp                 = ""
      uevent              = <store method only>
      vpd                 = "▒4"


[root@testserver host6]#


4. you can check manually as well.
[root@msk-bkp02 ~]# cd /sys/class/fc_host/host6
[root@testserver host6]# ls
device       issue_lip  port_id    port_state  speed       subsystem          supported_speeds  system_hostname  uevent
fabric_name  node_name  port_name  port_type   statistics  supported_classes  symbolic_name     tgtid_bind_type
[root@testserver host6]#
[root@testserver host6]#
[root@testserver host6]# more port_id
0x240e00
[root@testserver host6]#
[root@testserver host6]# more node_name
0x2000001b329677fa
[root@testserver host6]#