linux配置ISCSI服务器的方法

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

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