Linux 挂载iscsi存储磁盘设备

1，check网络

[root@localhost ~]# ping -I eth0 11.110.10.138

PING 11.110.10.138 (11.110.10.138) from 11.110.10.138eth0: 56(84) bytes of data.

64 bytes from 11.110.10.138: icmp_seq=1ttl=64 time=0.023 ms

64 bytes from 11.110.10.138: icmp_seq=2ttl=64 time=0.016 ms

64 bytes from 11.110.10.138: icmp_seq=3ttl=64 time=0.018 ms

^C

--- 11.110.10.138 ping statistics ---

3 packets transmitted, 3 received, 0%packet loss, time 2186ms

rtt min/avg/max/mdev =0.016/0.019/0.023/0.003 ms

[root@localhost ~]#

[root@localhost ~]# ping -I eth0192.168.180.138

PING 192.168.180.138 (192.168.180.138) from11.110.10.138 eth0: 56(84) bytes of data.

From 11.110.10.138 icmp_seq=2 DestinationHost Unreachable

From 11.110.10.138 icmp_seq=3 DestinationHost Unreachable

From 11.110.10.138 icmp_seq=4 DestinationHost Unreachable

^C

--- 192.168.180.138 ping statistics ---

4 packets transmitted, 0 received, +3errors, 100% packet loss, time 3729ms

pipe 3

[root@localhost ~]#

2,检测软件是否已经安装

[root@localhost ~]# rpm -qa |grep iscsi

iscsi-initiator-utils-6.2.0.873-2.0.2.el6.x86_64

[root@localhost ~]#

原博客地址：  http://blog.csdn.net/mchdba/article/details/46794809原作者：黄杉 (mchdba)

3,检查ISCSI服务是否启动了和当前级别下的运行情况

[root@localhost ~]# service iscsi status

......

4，要建立2个文件

[root@localhost ~]# iscsiadm -m iface -Iiscsi_eth0 --op=new

New interface iscsi_eth0 added

[root@localhost ~]# iscsiadm -m iface -Iiscsi_eth1 --op=new

New interface iscsi_eth1 added

[root@localhost ~]#

5.建立iscsi_eth0和eht0的映射关系。同时建立iscsi_eth1和eth1的映射关系.

也可以直接编辑iscsi_eth0和iscsi_eth1文件，把里面的iface.net_ifacename=default改成

iface.net_ifacename=eth0和iface.net_ifacename=eth1即可。

[root@localhost ~]# ls/var/lib/iscsi/ifaces/

iscsi_eth0 iscsi_eth1  iscsi_the0  iscsi_the1

[root@localhost ~]# cd/var/lib/iscsi/ifaces/

[root@localhost ifaces]# ll

总用量 16

-rw------- 1 root root 197 6月  10 16:05 iscsi_eth0

-rw------- 1 root root 197 6月  10 16:06 iscsi_eth1

-rw------- 1 root root 197 4月   3 19:14 iscsi_the0

-rw------- 1 root root 197 4月   3 19:14 iscsi_the1

[root@localhost ifaces]# cat iscsi_eth0

# BEGIN RECORD 6.2.0-873.2.el6

iface.iscsi_ifacename = iscsi_eth0

iface.transport_name = tcp

iface.vlan_id = 0

iface.vlan_priority = 0

iface.iface_num = 0

iface.mtu = 0

iface.port = 0

# END RECORD

[root@localhost ifaces]#

[root@localhost ifaces]# iscsiadm -m iface-I iscsi_eth0 --op=update -n iface.net_ifacename -v eth0

iscsi_eth0 updated.

[root@localhost ifaces]# iscsiadm -m iface-I iscsi_eth0 --op=update -n iface.net_ifacename -v eth0

iscsi_eth0 updated.

[root@localhost ifaces]#

6,重启iscsi服务

[root@localhost ifaces]# service iscsi restart

停止 iscsi：                                              [确定]

正在启动 iscsi：                                           [确定]

[root@localhost ifaces]#

Equallogic配置部分

7.配置Equallogic，映射一个Lun名字为redhat,大小3G的空间

在存储访问网站上，去分配新的磁盘块，这个比较简单，就不截图了，存储设备都会自带一个网址让我们访问的。

Redhat配置部分

8.做discover，可以发现已经看到了redhat的lun。因为有两条路径，所有显示了两行。

[root@localhost ifaces]# iscsiadm -mdiscovery -t sendtargets -p 11.110.10.138:3260

iscsiadm: cannot make connection to 11.110.10.138:Connection refused

iscsiadm: cannot make connection to 11.110.10.138:Connection refused

iscsiadm: cannot make connection to 11.110.10.138:Connection refused

iscsiadm: cannot make connection to 11.110.10.138:Connection refused

^Ciscsiadm: caught SIGINT, exiting...

[root@localhost ifaces]#

ip地址是存储的ip地址

[root@localhost ifaces]# iscsiadm -mdiscovery -t sendtargets -p 11.110.10.22 :3260

iscsiadm: This command will remove therecord [iface: default, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260],but a session is using it. Logout session then rerun command to remove record.

iscsiadm: This command will remove therecord [iface: default, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260], but a session is using it. Logout session then reruncommand to remove record.

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

11.110.10.22:3260,1 iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

11.110.10.22:3260,1 iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

[root@localhost ifaces]#

9.Log on所有的iscsi session，可以看到最后两个successful的redhat lun，已经log on成功了。

[root@localhost ifaces]# iscsiadm -m node-l

Logging in to [iface: iscsi_eth1, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260](multiple)

Logging in to [iface: iscsi_eth0, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260](multiple)

Logging in to [iface: iscsi_the1, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260](multiple)

Logging in to [iface: iscsi_the0, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260](multiple)

Logging in to [iface: iscsi_eth1, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_eth0, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_the1, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_the0, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_eth1, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_eth0, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_the1, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] (multiple)

Logging in to [iface: iscsi_the0, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] (multiple)

Login to [iface: iscsi_eth1, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260]successful.

Login to [iface: iscsi_eth0, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260]successful.

Login to [iface: iscsi_the1, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260]successful.

Login to [iface: iscsi_the0, target:iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata, portal: 11.110.10.22,3260]successful.

Login to [iface: iscsi_eth1, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_eth0, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_the1, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_the0, target:iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_eth1, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_eth0, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_the1, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] successful.

Login to [iface: iscsi_the0, target:iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3, portal:11.110.10.22,3260] successful.

[root@localhost ifaces]#

10：输入iscsiadm -m session可以看到当前正在连接的session.

[root@localhost ifaces]# iscsiadm -msession

tcp: [10] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

tcp: [11] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

tcp: [12] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

tcp: [13] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

tcp: [14] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

tcp: [15] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

tcp: [16] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6591f7f09-cf5248cfafa5577e-pddata3

tcp: [3] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

tcp: [4] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

tcp: [5] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

tcp: [6] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

tcp: [7] 11.110.10.22:3260,1 iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

tcp: [8] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-6dac38009-c1b1cac2d434efec-pddata

tcp: [9] 11.110.10.22:3260,1iqn.2001-05.com.equallogic:0-8a0906-4061f7f09-29d248cfaed54b9d-pddata2

[root@localhost ifaces]#

配置MPIO

11.因为有多条路径，所有我们需要配置MPIO，查看当前是否安装了MPIO软件。通过查看已经安装了。

[root@localhost ifaces]# rpm -qadevice-mapper

device-mapper-1.02.77-9.el6.x86_64

[root@localhost ifaces]#

[root@localhost ifaces]# chkconfig --listmultipathd

在 multipathd 服务中读取信息时出错：没有那个文件或目录

[root@localhost ifaces]#

12通过查看，MPIO服务在当前级别下没有开，我们启用它。

[root@localhost ifaces]# chkconfig --listmultipathd

multipathd          0:关闭      1:关闭      2:关闭      3:关闭      4:关闭      5:关闭      6:关闭

[root@localhost ifaces]#

[root@localhost ifaces]# chkconfigmultipathd on

[root@localhost ifaces]#

[root@localhost ifaces]#

[root@localhost ifaces]# chkconfig --listmultipathd

multipathd          0:关闭      1:关闭      2:启用      3:启用      4:启用      5:启用      6:关闭

[root@localhost ifaces]#

14.我们需要找到/etc/multipath.conf文件中的如下3行，把前面加上#把他们注释掉。

# Blacklist all devices by default. Removethis to enable multipathing

# on the default devices.

blacklist {

devnode "*"

}

15.重启multipathd服务，通过查看，可以看到我们做的那个3G的LUN信息了。

[root@localhost ifaces]# service  multipathd restart

正在关闭multipathd 端口监控程序：                          [失败]

正在启动守护进程multipathd：/sbin/multipathd: error while loading shared libraries:libsysfs.so.2: cannot open shared object file: No such file or directory

[失败]

[root@localhost ifaces]#

在/etc/ld.so.conf中加一行/usr/local/lib，.然后运行/sbin/ldconfig，文件解决，

[root@localhost ifaces]# find / -namelibsysfs.so.2

[root@localhost ifaces]#

没有此文件，所以yum安装下

[root@localhost ifaces]# yum install -ylibsysfs*

[root@localhost ifaces]# service  multipathd restart

正在关闭multipathd 端口监控程序：                          [失败]

正在启动守护进程multipathd：/sbin/multipathd: error while loading shared libraries:libreadline.so.5: cannot open shared object file: No such file or directory

[失败]

[root@localhost ifaces]#

需要安装 readline-5.2.tar.gz，下载地址为：http://pan.baidu.com/s/1jGnFN3S

安装为

tar-xvf readline-5.2.tar.gz

cdreadline-5.2

./configure

make

makeinstall

[root@localhost ifaces]# yum install -ylibreadline*

去/etc/ld.so.conf添加进lib目录即可

[root@localhost readline-5.2]# cp/etc/ld.so.conf /etc/ld.so.conf.backup

[root@localhost readline-5.2]# vim/etc/ld.so.conf

include ld.so.conf.d/*.conf

/usr/local/lib

[root@localhost readline-5.2]# ldconfig

[root@localhost readline-5.2]#

[root@localhost readline-5.2]#

[root@localhost readline-5.2]# servicemultipathd restart

正在关闭multipathd 端口监控程序：                          [失败]

正在启动守护进程multipathd：                               [确定]

[root@localhost readline-5.2]#

[root@localhost readline-5.2]# multipathd-ll

[root@localhost readline-5.2]#

？why？这里没有别的信息呢？为什么没有显示出新分配的那个磁盘的信息呢？

16.继续编辑/etc/multipath.conf,我们给这个3G的LUN起个可以自己命名的名字。

通过multipath –ll,我们可以得到这个3G LUN的WWID: 360c090c2f903ac4a89c2e40000006000

把如图前面的#去掉，同时把wwid改成360c090c2f903ac4a89c2e40000006000。Alias改成 pddata3.

multipaths {

multipath {

wwid                   3600508b4000156d700012000000b0000

alias                   pddata3

path_grouping_policy    multibus

path_checker            readsector0

path_selector           "round-robin 0"

failback                manual

rr_weight               priorities

no_path_retry           5

}

17.重启multipathd服务，可以看到我们命名的pddata3出来了。

service multipathd restart

why ? 没有看到pddata3

19.格式化 pddata3

[root@localhost readline-5.2]# ls /dev/sdp

/dev/sdp

[root@localhost readline-5.2]#

ext3太土鳖了，所以采用xfs文件格式

[root@localhost readline-5.2]# yum install-y xfsprogs

[root@localhost readline-5.2]# sudo fdisk/dev/sdp

Device contains neither a valid DOSpartition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel with diskidentifier 0xd45833b8.

Changes will remain in memory only, untilyou decide to write them.

After that, of course, the previous contentwon't be recoverable.

Warning: invalid flag 0x0000 of partitiontable 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated.It's strongly recommended to

switch off the mode (command 'c') and change display units to

sectors (command 'u').

Command (m for help): m

Command action

a   toggle a bootable flag

b   edit bsd disklabel

c   toggle the dos compatibilityflag

d   delete a partition

l   list known partition types

m   print this menu

n   add a new partition

o   create a new empty DOSpartition table

p   print the partition table

q   quit without saving changes

s   create a new empty Sundisklabel

t   change a partition's system id

u   change display/entry units

v   verify the partition table

w   write table to disk and exit

x   extra functionality (expertsonly)

Command (m for help): n

Command action

e   extended

p   primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-104434, default 1):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G}(1-104434, default 104434):

Using default value 104434

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@localhost readline-5.2]#

接下来，格式化分区为XFS，使用mkfs.xfs命令。如果已有其他文件系统创建在此分区，必须加上"-f"参数来覆盖它。

[root@localhost readline-5.2]# sudo mkfs.xfs-f /dev/sdp1

meta-data=/dev/sdp1              isize=256    agcount=4, agsize=52429130 blks

=                      sectsz=512   attr=2, projid32bit=1

=                       crc=0

data    =                      bsize=4096   blocks=209716518,imaxpct=25

=                      sunit=0      swidth=0 blks

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

log     =internal log          bsize=4096   blocks=102400,version=2

=                      sectsz=512   sunit=0 blks,lazy-count=1

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

[root@localhost readline-5.2]#

18，建立新目录/pddata3，以此挂载新的磁盘

至此你已经准备好格式化后分区来挂载。假设/pddata3 是XFS本地挂载点。使用下述命令挂载：

sudomount -t xfs /dev/sdp1 /pddata3

[root@localhost readline-5.2]# mkdir/pddata3

[root@localhost readline-5.2]#  sudo mount -t xfs /dev/sdp1 /pddata2

[root@localhost readline-5.2]#

[root@localhost readline-5.2]# df -h

文件系统               容量  已用  可用 已用%% 挂载点

/dev/mapper/VolGroup-lv_root

50G   33G  15G  70% /

tmpfs                 8.9G  3.3G 5.7G  37% /dev/shm

/dev/sda2             485M   76M 384M  17% /boot

/dev/sda1             200M  260K 200M   1% /boot/efi

/dev/mapper/VolGroup-lv_home

76G   50G  22G  70% /home

/dev/sdc             1008G  380G 578G  40% /data

/dev/sdp1             800G   33M 800G   1% /pddata2

[root@localhost readline-5.2]#

参考地址：http://www.jb51.net/LINUXjishu/248321.html

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