How to check SCSI device's storage path with the tool lsscsi?

Environment

• Red Hat Enterprise Linux 5
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7

Issue

• How do I know a SCSI device's LUN ID (or storage path)?

Resolution

• If you're using Red Hat Enterprise Linux 5, 6 or 7, you can install the lsscsi package and use the lsscsi command to view SCSI devices' storage path.

    [root@hostname]# lsscsi
    [1:0:0:0]    storage IET      Controller       0001  -
    [1:0:0:1]    disk    IET      VIRTUAL-DISK     0001  /dev/sdb

In the outputs, "[1:0:0:1]" is in the format of [H:B:T:L]. H is the Host ID, B is the Bus ID, T is the Target ID, and L is the LUN ID. Please refer to Understanding  SCSI addressing on Red Hat Enterprise Linux if you want to know more deatails about SCSI addressing.

Below is the usage of lsscsi:

[root@hostname ~]# lsscsi -h
Usage: lsscsi   [--classic] [--device] [--generic] [--help] [--hosts]
                [--kname] [--long] [--verbose] [--version]
                [<h:c:t:l>]
        --classic|-c  alternate output similar to 'cat /proc/scsi/scsi'
        --device|-d   show device node's major + minor numbers
        --generic|-g  show scsi generic device name
        --help|-h     this usage information
        --hosts|-H    lists scsi hosts rather than scsi devices
        --kname|-k    show kernel name instead of device node name
        --long|-l     additional information output
        --verbose|-v  output path names where data is found
        --version|-V  output version string and exit
        <h:c:t:l>  filter output list (def: '- - - -' (all))

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