iSCSI Storage Modules

1. Install the iSCSI target package and start the service :

# yum Install-y targetcli

# Systemctl enable target; Systemctl start target

2. Enter the ISCSI Target Interactive configuration mode :

# TARGETCLI

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4.TARGETCLI for configuration

/>/backstores/block Create SERVER0.DISK1/DEV/ISCSI_VG/DISK1_LV//give the hard drive an alias

Created Block Storage Object Server0.disk1 using/dev/iscsi_vg/disk1_lv.

/>/ISCSI Create Iqn.2014-12.com.example:server0

Created Target Iqn.2014-12.com.example:server0.

Created TPG 1.

/>/iscsi/iqn.2014-12.com.example:server0/tpg1/luns Create/backstores/block/server0.disk1

Created LUN 0.

Created LUN 0->0 Mapping in node ACL iqn.2014-12.com.example:desktop0

/>/iscsi/iqn.2014-12.com.example:server0/tpg1/portals Create 172.25.0.11

Using Default IP Port 3260

Created Network Portal 172.25.0.11:3260.

/> Exit

5. results after a successful configuration

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Second, the client

1) yum install iscsi-initiator-utils.x86_64-y

2) iscsiadm-m discovery-t st-p 172.25.254.

3) Edit File Vim/etc/iscsi/initiatorname.iscsi

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Systemctl Restart Iscsid.service

4 ) Find the iSCSI targets provided by the iSCSI Server ( target portal )

Iscsiadm-m discovery-t st-p 172.25.254.120

5) log on to one or more iSCSI targets on the server

Iscsiadm-m node-t iqn.2015-06.com.example:westos-p 172.25.254.120-l

-l: login    -m : operation     Span style= "font-family: ' Times New Roman ';" >-t: 

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6) Fdisk-l

FDISK/DEV/SDA re-partition /dev/vda1

Partprobe

Mkfs.xfs/dev/sda1

mount/dev/sda1/mnt/

   vim /etc/fstab  /etc/fstab

blkid Span style= "font-family: ' The song Body '; > OK file system uuid uuid mount , /dev/sd* device name. ( every time

The device names displayed at boot time are different , depending on the order in which the ISCSI devices respond over the network.

If you mount by device name , This causes the wrong device to be used. )

2. use _netdev as Mount option in /etc/fstab . ( This ensures that the client does not attempt to mount the file system

to enable networking. Otherwise , The system will fail at boot time. )

3. ensure that the iSCSI service starts at boot time.

Vim/etc/fstab

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7) reboot Client, if not shut down properly, then poweroff can

Interrupt the use of ISCSI targets

Client:

1. Delete /etc/fstab first

2.mount/mnt

3.iscsiadm-m node-t iqn.2015-06.com.example:westos-p 172.25.254.100

Logging out of Session [Sid:1, Target:iqn.2015-06.westos.disk1:storage1,portal:172.25.254.132,3260]logout of [Sid:1, T  Arget:iqn.2015-06.westos.disk1:storage1, portal:172.25.254.132,3260] successful. ------- Temporary deletion succeeded

This will only temporarily delete /dev/sda-u: logoff

Systemctl Restart Iscsid.service

systemctl restart Iscsi.service

The/DEV/SDA partition will re-appearwhen the service iSCSI service is heavy:fdisk-l

4.iscsiadm-m node-t iqn.2015-06.com.example:westos-p 172.25.254.120-o Delete

Restart service completely remove /dev/vda

Service side:

1. Delete two files:

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2.systemctl Restart Target If the service is not restarted, the operation will be re-saved

Can targetcli view:ls after the initial state

iSCSI Storage Modules