以下为安装tgt服务，（SCSI Target服务）

#apt install tgt -y

以下命令为创建一个Target其tid为1名称为iqn.2020-11.com:cmtg

#tgtadm --lld iscsi --mode target --op new --tid 1 --targetname iqn.2020-11.com:cmtg

以下命令为查看Target记录是否已创建

#tgtadm --lld iscsi --mode target --op show

Target 1: iqn.2020-11.com:cmtg
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00010000
            SCSI SN: beaf10
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Prevent removal: No
            Readonly: No
            SWP: No
            Thin-provisioning: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
    Account information:
    ACL information:

以下命令让任何人都能连接到该Target

#tgtadm --lld iscsi --mode target --op bind --tid 1 -I ALL

以下命令为创建一个新的LUN号，/dev/sda可以是一个硬盘，或分区，或卷组，或RAID

#tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 -b /dev/sda

以下命令查看icssi服务状态

#tgtadm --lld iscsi --mode target --op show

Target 1: iqn.2020-11.com:cmtg
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00010000
            SCSI SN: beaf10
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Prevent removal: No
            Readonly: No
            SWP: No
            Thin-provisioning: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00010001
            SCSI SN: beaf11
            Size: 500108 MB, Block size: 512
            Online: Yes
            Removable media: No
            Prevent removal: No
            Readonly: No
            SWP: No
            Thin-provisioning: No
            Backing store type: rdwr
            Backing store path: /dev/sda
            Backing store flags:
    Account information:
    ACL information:
        ALL

直接Windows搜索iSCSI发起程序（没有启动服务器回提醒你启动下的）

输入服务器IP快速连接就OK了~，记录2020/11/12

补充：（2020/11/16）

如果配置正确的话可以使用以下命令保存到配置

tgt-admin --dump > /etc/tgt/targets.conf