iSCSI usage tutorial

iSCSI (Internet Small Computer System Interface) is a protocol for transmitting SCSI commands over a network, allowing storage devices to communicate over a network, similar to directly connected storage. It can virtualize storage resources, achieve centralized management, network sharing, and remote access, and is suitable for scenarios such as data centers, virtualized environments, and backup and recovery.
Through this tutorial, you will learn how to configure and use iSCSI in ZimaOS to improve storage management efficiency, simplify network storage architecture, and achieve flexible data access methods.

Prerequisites

The hard disk used is not in use
Confirm the client’s IQN

Operation steps

Server

Make sure your ZimaOS has been upgraded to 1.2.5 or above.

Use the command sudo -i to enter superuser mode，Start targetcli
targetcli

Create a LUN, assuming /dev/sde is used as the storage backend(Here we use sde. You can use the lsblk to view the device status and change to sda or sdb..):
cd backstores/block
create myblockdev /dev/sde

Create an iSCSI target (iqn.2024-10.com.zima:target1 is an example)
cd /iscsi
create iqn.2024-10.com.zima:target1

Add a LUN to the target

cd iqn.2024-10.com.zima:target1/tpg1/luns
create /backstores/block/myblockdev

Set the ACL (access control list) to allow the connection. The IQN here needs to be consistent with the client(Open iSCSI Initiator, it is in the Configuration tab)
cd ../acls
create iqn.1993-08.org.debian:01:bb1e6772dfb6

Client

Windows

Open iSCSI Initiator, in the Discovery tab, click Discover Portal
Configure the IP address, click OK
In the Targets tab, click Connect
Open Computer Management, click Storage > Disk Management, and you can see the newly connected iSCSI volume

Linux

Discover iSCSI targets

iscsiadm -m discovery -t sendtargets -p <IP_ADDRESS>

Replace <IP_ADDRESS> with the IP address of the server