Linux挂载iscsi存储磁盘设备
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 ~]#
<版权所有,文章允许转载,但必须以链接方式注明源地址,否则追究法律责任!>
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]#
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