linux 配置SAN存储-IPSAN-白红宇

linux 配置SAN存储-IPSAN

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发布时间：2019-06-12

本文共 9823 字，大约阅读时间需要 32 分钟。

简单的介绍一下SAN （存储区域网络 storage area network and SAN protocols ,简称SAN），它是一种高速网络实现计算机与存储系统之间的数据传输。常见的分类是FC-SAN和IP-SAN两种。

FC-SAN通过光纤通道协议转发scsi协议；IP-SAN通过TCP协议转发scsi协议，也就是IP 地址。

存储设备是指一台或多台用以存储计算机数据的磁盘设备，通常指磁盘阵列，主要厂商EMC、日立等。

下面配置IP-SAN存储实战

服务名称	服务器地址
服务端：node01	192.168.137.101
客户端：node02	192.168.137.102
客户端：node03	192.168.137.103

一、服务端安装

1.1 IPSAN 是C/S模式服务端口3260

点击(此处)折叠或打开

[root@node01 ~]# yum -y install scsi-target-utils #yum 安装

[root@node01 ~]# ll /etc/tgt/targets.conf #主要配置文件
-rw------- 1 root root 6945 Sep 4 2013 /etc/tgt/targets.conf
[root@node01 ~]# service tgtd restart #启动服务
Stopping SCSI target daemon: not running [FAILED]
Starting SCSI target daemon: [ OK ]
[root@node01 ~]# chkconfig tgtd on
[root@node01 ~]# netstat -antup |grep 3260 #检查服务端口
tcp 0 0 0.0.0.0:3260 0.0.0.0:* LISTEN 1125/tgtd
tcp 0 0 :::3260 :::* LISTEN 1125/tgtd
[root@node01 ~]#

1.2 新建存储分区，在这里我们通过在vmvare新增加一个块10G大小的磁盘 /dev/sdb，重启服务器

点击(此处)折叠或打开

[root@node01 ~]# fdisk -l |grep "Disk"

Disk /dev/sda: 21.5 GB, 21474836480 bytes

Disk identifier: 0x0004a1ec

Disk /dev/sdb: 10.7 GB, 10737418240 bytes

Disk identifier: 0x00000000

[root@node01 ~]#

[root@node01 ~]# fdisk /dev/sdb #分区，大小5G

1.3 共享存储分区，修改/etc/tgt/targets.conf 文件

点击(此处)折叠或打开

[root@node01 ~]# vim /etc/tgt/targets.conf # 增加以下内容，以下是iscsi的格式

<target iqn.2016-08.cn.node01.www:target4_scan> #命名

backing-store /dev/sdb1 #共享的分区

initiator-address 192.168.137.102 #允许访问的地址

initiator-address 192.168.137.103

vendor_id node #标示

product_id target4 #产品编号

</target>

[root@node01 ~]# tgt-admin -show #查看状态
Target 1: iqn.2016-08.cn.node01.www:target4_scan
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
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 5379 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/sdb1
Backing store flags:
Account information:
ACL information:
192.168.137.102
192.168.137.103
[root@node01 ~]#

二、客户端配置

2.1 安装iscsi-initiator-utils，并配置服务信息

点击(此处)折叠或打开

[root@node02 ~]# yum -y install iscsi-initiator-utils

[root@node02 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.137.101 #发现target存储

Starting iscsid: [ OK ]

192.168.137.101:3260,1 iqn.2016-08.cn.node01.www:target4_scan

[root@node02 ~]#

[root@node02 ~]# /etc/init.d/iscsid status #查看客户端服务

iscsid (pid 1153) is running...

[root@node02 ~]#

[root@node02 ~]# tree /var/lib/iscsi/ #发现target服务，信息会写入/var/lib/iscsi 目录下

/var/lib/iscsi/

├── ifaces

├── isns

├── nodes

│ └── iqn.2016-08.cn.node01.www:target4_scan

│ └── 192.168.137.101,3260,1

│ └── default

├── send_targets

│ └── 192.168.137.101,3260

│ ├── iqn.2016-08.cn.node01.www:target4_scan,192.168.137.101,3260,1,default -> /var/lib/iscsi/nodes/iqn.2016-08.cn.node01.www:target4_scan/192.168.137.101,3260,1

│ └── st_config

├── slp

└── static

10 directories, 2 files

[root@node02 ~]#

[root@node02 ~]# /etc/init.d/iscsid start #先启动iscsid 服务
[root@node02 ~]# /etc/init.d/iscsi start #在启动iscsi服务该服务是根据iscsid服务信息/var/lib/iscsi/ 来识别设备的
Starting iscsi: [ OK ]
[root@node02 ~]#

2.2 检查是否发现磁盘，以及卸载和登录scsi设备

点击(此处)折叠或打开

[root@node02 ~]# ll /dev/sdb

brw-rw---- 1 root disk 8, 16 Aug 12 00:48 /dev/sdb

[root@node02 ~]# lsblk #lsblk查看块信息的命令

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 10G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sr0 11:0 1 3.6G 0 rom /media
sdb 8:16 0 5G 0 disk

[root@node02 ~]#

[root@node02 ~]# tree /var/lib/iscsi/

/var/lib/iscsi/
├── ifaces
├── isns
├── nodes
│ └── iqn.2016-08.cn.node01.www:target4_scan
│ └── 192.168.137.101,3260,1
│ └── default
├── send_targets
│ └── 192.168.137.101,3260
│ ├── iqn.2016-08.cn.node01.www:target4_scan,192.168.137.101,3260,1,default -> /var/lib/iscsi/nodes/iqn.2016-08.cn.node01.www:target4_scan/192.168.137.101,3260,1
│ └── st_config
├── slp
└── static
10 directories, 2 files

[root@node02 ~]# iscsiadm -m node -T iqn.2016-08.cn.node01.www:target4_scan -u #卸载scsi设备

Logging out of session [sid: 1, target: iqn.2016-08.cn.node01.www:target4_scan, portal: 192.168.137.101,3260]

Logout of [sid: 1, target: iqn.2016-08.cn.node01.www:target4_scan, portal: 192.168.137.101,3260] successful.

[root@node02 ~]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 10G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sr0 11:0 1 3.6G 0 rom /media

[root@node02 ~]# iscsiadm -m node -T iqn.2016-08.cn.node01.www:target4_scan -l #登录scsi设备

Logging in to [iface: default, target: iqn.2016-08.cn.node01.www:target4_scan, portal: 192.168.137.101,3260] (multiple)

[root@node02 ~]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 10G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sr0 11:0 1 3.6G 0 rom /media
sdb 8:16 0 5G 0 disk

[root@node02 ~]#

2.3 使用scsi设备，并做写入操作

点击(此处)折叠或打开

[root@node02 ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda2 9.9G 869M 8.5G 10% /

tmpfs 238M 0 238M 0% /dev/shm

/dev/sda1 194M 27M 158M 15% /boot

/dev/sr0 3.6G 3.6G 0 100% /media

[root@node02 ~]#

[root@node02 ~]# fdisk /dev/sdb #分区

[root@node02 ~]# lsblk #查看分区块

NNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 10G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sr0 11:0 1 3.6G 0 rom /media
sdb 8:16 0 5G 0 disk
└─sdb1 8:17 0 5G 0 part

[root@node02 ~]# mkfs.ext4 /dev/sdb1 #格式化分区

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

328656 inodes, 1312222 blocks

65611 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=1346371584

41 block groups

32768 blocks per group, 32768 fragments per group

8016 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 21 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

[root@node02 ~]# mkdir /scsi #挂载分区到新建目录/scsi

[root@node02 ~]# mount /dev/sdb1 /scsi/

[root@node02 ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda2 9.9G 869M 8.5G 10% /

tmpfs 238M 0 238M 0% /dev/shm

/dev/sda1 194M 27M 158M 15% /boot

/dev/sr0 3.6G 3.6G 0 100% /media

/dev/sdb1 5.0G 139M 4.6G 3% /scsi

[root@node02 ~]# cp -r /root/* /scsi/ #写入验证

[root@node02 ~]# ll /scsi/

total 36

-rw------- 1 root root 980 Aug 12 00:59 anaconda-ks.cfg

-rw-r--r-- 1 root root 10197 Aug 12 00:59 install.log

-rw-r--r-- 1 root root 3161 Aug 12 00:59 install.log.syslog

drwx------ 2 root root 16384 Aug 12 00:58 lost+found

[root@node02 ~]# df -h /scsi/

Filesystem Size Used Avail Use% Mounted on

/dev/sdb1 5.0G 139M 4.6G 3% /scsi

[root@node02 ~]#

三、添加另外客户端192.168.137.103。操作同192.168.137.102基本类似，只是本次不再需要格式化分区

点击(此处)折叠或打开

[root@node03 ~]# yum -y install iscsi-initiator-utils

[root@node03 ~]#

[root@node03 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.137.101

Starting iscsid: [ OK ]

192.168.137.101:3260,1 iqn.2016-08.cn.node01.www:target4_scan

[root@node03 ~]# yum -y install tree

[root@node03 ~]# tree /var/lib/iscsi/

/var/lib/iscsi/

├── ifaces

├── isns

├── nodes

│ └── iqn.2016-08.cn.node01.www:target4_scan

│ └── 192.168.137.101,3260,1

│ └── default

├── send_targets

│ └── 192.168.137.101,3260

│ ├── iqn.2016-08.cn.node01.www:target4_scan,192.168.137.101,3260,1,default -> /var/lib/iscsi/nodes/iqn.2016-08.cn.node01.www:target4_scan/192.168.137.101,3260,1

│ └── st_config

├── slp

└── static

10 directories, 2 files

[root@node03 ~]# /etc/init.d/iscsid restart

Stopping iscsid:

Starting iscsid: [ OK ]

[root@node03 ~]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 10G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sr0 11:0 1 3.6G 0 rom /media

[root@node03 ~]# /etc/init.d/iscsi restart

Stopping iscsi: [ OK ]

Starting iscsi: [ OK ]

[root@node03 ~]# lsblk #可以看到设备sdb1 了

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 10G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sr0 11:0 1 3.6G 0 rom /media
sdb 8:16 0 5G 0 disk
└─sdb1 8:17 0 5G 0 part

[root@node03 ~]#

[root@node03 ~]#

[root@node03 ~]# mkdir /scsi

[root@node03 ~]# mount /dev/sdb1 /scsi/ #挂载

[root@node03 ~]# cd !$

cd /scsi/

[root@node03 scsi]# ll #可以可看到在node02中写入的内容

total 36

-rw------- 1 root root 980 Aug 12 00:59 anaconda-ks.cfg

-rw-r--r-- 1 root root 10197 Aug 12 00:59 install.log

-rw-r--r-- 1 root root 3161 Aug 12 00:59 install.log.syslog

drwx------ 2 root root 16384 Aug 12 00:58 lost+found

[root@node03 scsi]# cp /etc/passwd /scsi/ #在node03上写入新文件passwd，在node02验证

[root@node03 scsi]# ll

total 40

-rw------- 1 root root 980 Aug 12 00:59 anaconda-ks.cfg

-rw-r--r-- 1 root root 10197 Aug 12 00:59 install.log

-rw-r--r-- 1 root root 3161 Aug 12 00:59 install.log.syslog

drwx------ 2 root root 16384 Aug 12 00:58 lost+found

-rw-r--r-- 1 root root 901 Aug 12 01:11 passwd

[root@node03 scsi]#

#在node02 未能识别node03写入的passwd文件，没有同步，是因为我们使用ext4文件系统不支持，使用GFS可以保持同步

[root@node02 scsi]# ll
total 36
-rw------- 1 root root 980 Aug 12 00:59 anaconda-ks.cfg
-rw-r--r-- 1 root root 10197 Aug 12 00:59 install.log
-rw-r--r-- 1 root root 3161 Aug 12 00:59 install.log.syslog
drwx------ 2 root root 16384 Aug 12 00:58 lost+found
[root@node02 scsi]#