RHEL7: 提供与访问ISCSI存储 – 肥叉烧 feichashao.com

Target配置(提供存储)

Target的IP地址是192.168.122.243

1.安装所需软件；

[root@s1 ~]# yum install targetcli -y

2. 用targetcli进入交互式配置；

[root@s1 ~]# targetcli

3. 在targetcli中，添加块设备；

/> ls
/> cd /backstores/
/backstores> block/ create block1 /dev/vda

4. 创建node

/backstores> cd /iscsi 
/iscsi> create iqn.2015-01.com.example:remotedisk1

5. 添加ACL

/iscsi> cd iqn.2015-01.com.example:remotedisk1/tpg1/
/iscsi/iqn.20...otedisk1/tpg1> acls/ create iqn.2015-01.com.example:desktop0
Created Node ACL for iqn.2015-01.com.example:desktop0

6. 在Node中添加block

/iscsi/iqn.20...otedisk1/tpg1> luns/ create /backstores/block/block1 
Created LUN 0.
Created LUN 0->0 mapping in node ACL iqn.2015-01.com.example:desktop0

7. 创建入口(portals)，create后面不跟IP的话默认是0.0.0.0

/iscsi/iqn.20...otedisk1/tpg1> portals/ create 
Using default IP port 3260
Binding to INADDR_ANY (0.0.0.0)
Created network portal 0.0.0.0:3260.

8. 保存退出

/> exit
Global pref auto_save_on_exit=true
Last 10 configs saved in /etc/target/backup.
Configuration saved to /etc/target/saveconfig.json

9. 添加防火墙规则，重启服务

[root@s1 ~]# firewall-cmd --add-port=3260/tcp --permanent 
[root@s1 ~]# firewall-cmd --reload 

[root@s1 ~]# systemctl enable target
[root@s1 ~]# systemctl restart target.service

Initiator配置(访问iscsi存储)

1. 安装所需软件 iscsi-initiator-utils

[root@r7-h1 ~]# yum install iscsi-initiator-utils -y

2. 修改 /etc/iscsi/initiatorname.iscsi (修改后要重启iscsid才能生效)
把Node改成Target中ACL的IQN.

iqn.2015-01.com.example:desktop0

3. 重启iscsi服务

[root@r7-h1 ~]# systemctl restart iscsi
[root@r7-h1 ~]# systemctl restart iscsid

4. Descovery

[root@r7-h1 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.122.243
192.168.122.243:3260,1 iqn.2015-01.com.example:remotedisk1

5. Login

[root@r7-h1 ~]# iscsiadm --mode node --targetname iqn.2015-01.com.example:remotedisk1 --portal 192.168.122.243:3260 --login
Logging in to [iface: default, target: iqn.2015-01.com.example:remotedisk1, portal: 192.168.122.243,3260] (multiple)
Login to [iface: default, target: iqn.2015-01.com.example:remotedisk1, portal: 192.168.122.243,3260] successful.

6. 检查

[root@r7-h1 ~]# iscsiadm -m session -P 3

7. 确认iscsi开机启动；

[root@r7-h1 ~]# systemctl enable iscsid.service
[root@r7-h1 ~]# systemctl enable iscsi.service