配置ISCSI服务器

一.在linux下安装启动iscsi target

1.安装启动iscsi服务

[root@wjb10000 ~]# yum -y install targetcli.noarch

2.建立一个目录设置为iscsi设备

[root@wjb10000 ~]# mkdir /iscsi_disks

3.设置target 

[root@wjb10000 ~]# targetcli

Warning: Could not load preferences file /root/.targetcli/prefs.bin.

targetcli shell version 2.1.fb41

Copyright 2011-2013 by Datera, Inc and others.

For help on commands, type 'help'.

 

/> cd backstores/fileio

/backstores/fileio> create disk01 /iscsi_disks/disk01.img 20G

Created fileio disk01 with size 21474836480

/backstores/fileio> cd /iscsi

/iscsi> create iqn.2016-06.wjb.com:storage.target0

Created target iqn.2016-06.wjb.com:storage.target0.

Created TPG 1.

Global pref auto_add_default_portal=true

Created default portal listening on all IPs (0.0.0.0), port 3260.

/iscsi> cd iqn.2016-06.wjb.com:storage.target0/tpg1/portals/

/iscsi/iqn.20.../tpg1/portals> create 192.168.1.50

Using default IP port 3260

Could not create NetworkPortal in configFS

/iscsi/iqn.20.../tpg1/portals> delete 0.0.0.0 3260

Deleted network portal 0.0.0.0:3260

/iscsi/iqn.20.../tpg1/portals> create 192.168.1.50

Using default IP port 3260

Created network portal 192.168.1.50:3260.

/iscsi/iqn.20.../tpg1/portals> cd ../luns

/iscsi/iqn.20...et0/tpg1/luns> create /backstores/fileio/disk01

Created LUN 0.

/iscsi/iqn.20...et0/tpg1/luns> cd ../acls

/iscsi/iqn.20...et0/tpg1/acls> create iqn.2016-06.wjb.com:www.server.com

Created Node ACL for iqn.2016-06.wjb.com:www.server.com

Created mapped LUN 0.

/iscsi/iqn.20...et0/tpg1/acls> cd iqn.2016-06.wjb.com:www.server.com/

/iscsi/iqn.20...ww.server.com> set auth userid=username

Parameter userid is now 'username'.

/iscsi/iqn.20...ww.server.com> set auth password=password

Parameter password is now 'password'.

/iscsi/iqn.20...ww.server.com> exit

Global pref auto_save_on_exit=true

Last 10 configs saved in /etc/target/backup.

Configuration saved to /etc/target/saveconfig.json

4.设置防火墙

[root@wjb10000 ~]# vim /etc/firewalld/services/iscsi.xml

<?xml version="1.0" encoding="utf-8"?>

<service>

<short>ISCSI</short>

<description>ISCSI protocal</description>

<port protocal="tcp" port="3260">

</service>

[root@wjb10000 ~]# firewall-cmd --permanent --add-service=iscsi

[root@wjb10000 ~]# firewall-cmd --reload

5.启动服务

[root@wjb10000 ~]# systemctl enable target.service

Created symlink from /etc/systemd/system/multi-user.target.wants/target.service to /usr/lib/systemd/system/target.service.

[root@wjb10000 ~]# systemctl start target.service

6.查看端口

[root@wjb10000 ~]# netstat -lnp | grep 3260

tcp        0      0 192.168.1.50:3260       0.0.0.0:*               LISTEN      -                   

二.在linux下安装启动iscsi initiator

1.安装 iscsi-initiator-utils服务

[root@wjb10000 ~]# yum install iscsi-initiator-utils

2.修改配置文件

[root@wjb10000 ~]# vim /etc/iscsi/initiatorname.iscsi 
InitiatorName=iqn.2016-06.wjb.com:www.server.com
[root@wjb10000 ~]# vim /etc/iscsi/iscsid.conf

#node.session.auth.authmethod = CHAP

#node.session.auth.username = username

#node.session.auth.password = password            //去掉注释

3.启动服务

[root@wjb10000 ~]# systemctl start iscsid

[root@wjb10000 ~]# systemctl enable iscsid

4.发现target

 [root@wjb10000 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.1.50

5.查看状态

[root@wjb10000 ~]# iscsiadm -m node -o show

6.登录target建立连接

[root@wjb10000 ~]# iscsiadm -m node --login

Logging in to [iface: default, target: iqn.2016-06.wjb.com:storage.target0, portal: 192.168.1.50,3260] (multiple)

Login to [iface: default, target: iqn.2016-06.wjb.com:storage.target0, portal: 192.168.1.50,3260] successful.

7.查看连接情况

[root@wjb10000 ~]# iscsiadm -m session -o show

tcp: [1] 192.168.1.50:3260,1 iqn.2016-06.wjb.com:storage.target0 (non-flash)

8.磁盘操作

[root@wjb10000 ~]# fdisk -l

 

磁盘 /dev/sda：107.4 GB, 107374182400 字节，209715200 个扇区

Units = 扇区 of 1 * 512 = 512 bytes

扇区大小(逻辑/物理)：512 字节 / 512 字节

I/O 大小(最小/最佳)：512 字节 / 512 字节

磁盘标签类型：dos

磁盘标识符：0x000b2ba1

 

   设备 Boot      Start         End      Blocks   Id  System

/dev/sda1   *        2048     1026047      512000   83  Linux

/dev/sda2         1026048    62466047    30720000   83  Linux

/dev/sda3        62466048   103426047    20480000   83  Linux

/dev/sda4       103426048   209715199    53144576    5  Extended

/dev/sda5       103428096   144388095    20480000   83  Linux

/dev/sda6       144390144   152582143     4096000   82  Linux swap / Solaris

/dev/sda7       152584192   209715199    28565504   83  Linux

 

磁盘 /dev/sdb：21.5 GB, 21474836480 字节，41943040 个扇区

Units = 扇区 of 1 * 512 = 512 bytes

扇区大小(逻辑/物理)：512 字节 / 512 字节

I/O 大小(最小/最佳)：512 字节 / 8388608 字节

 

[root@wjb10000 ~]# parted --script /dev/sdb "mklabel msdos"

[root@wjb10000 ~]# parted --script /dev/sdb "mkpart primary 0% 100%"

[root@wjb10000 ~]# mkfs.xfs -i size=1024 -s size=4096 /dev/sdb1

meta-data=/dev/sdb1              isize=1024   agcount=4, agsize=1310208 blks

         =                       sectsz=4096  attr=2, projid32bit=1

         =                       crc=0        finobt=0

data     =                       bsize=4096   blocks=5240832, imaxpct=25

         =                       sunit=0      swidth=0 blks

naming   =version 2              bsize=4096   ascii-ci=0 ftype=0

log      =internal log           bsize=4096   blocks=2560, version=2

         =                       sectsz=4096  sunit=1 blks, lazy-count=1

realtime =none                   extsz=4096   blocks=0, rtextents=0

[root@wjb10000 ~]# mount /dev/sdb1 /mnt/

[root@wjb10000 ~]# df -hT

文件系统       类型      容量  已用  可用 已用% 挂载点

/dev/sda3      xfs        20G   68M   20G    1% /

devtmpfs       devtmpfs  904M     0  904M    0% /dev

tmpfs          tmpfs     913M     0  913M    0% /dev/shm

tmpfs          tmpfs     913M  8.7M  904M    1% /run

tmpfs          tmpfs     913M     0  913M    0% /sys/fs/cgroup

/dev/sda5      xfs        20G  1.5G   19G    8% /usr

/dev/sda7      xfs        28G   33M   28G    1% /home

/dev/sda2      xfs        30G  694M   29G    3% /var

/dev/sda1      xfs       497M  128M  370M   26% /boot

tmpfs          tmpfs     183M     0  183M    0% /run/user/0

/dev/sdb1      xfs        20G   33M   20G    1% /mnt