iSCSI Target sur Debian 12

Configuration d'un serveur iSCSI Target sur Debian 12.

Composant	Version
Debian	12 Bookworm
targetcli-fb	2.1+

Durée estimée : 25 minutes

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1. Installation (Target/Serveur)

apt update
apt install -y targetcli-fb

systemctl enable --now rtslib-fb-targetctl

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2. Préparer le stockage

# Fichier image
mkdir -p /var/iscsi
dd if=/dev/zero of=/var/iscsi/disk1.img bs=1M count=10240

# Ou LVM
lvcreate -L 50G -n lv_disk1 vg_data

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3. Configuration avec targetcli

targetcli

# Backstore
/> backstores/fileio create disk1 /var/iscsi/disk1.img
# ou
/> backstores/block create disk1 /dev/vg_data/lv_disk1

# Target
/> iscsi/ create iqn.2024-01.com.example:storage.target1

# LUN
/> iscsi/iqn.2024-01.com.example:storage.target1/tpg1/luns create /backstores/fileio/disk1

# ACL
/> iscsi/iqn.2024-01.com.example:storage.target1/tpg1/acls create iqn.2024-01.com.example:client1

# Portail
/> iscsi/iqn.2024-01.com.example:storage.target1/tpg1/portals create 0.0.0.0 3260

# Sauvegarder
/> saveconfig
/> exit

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4. Authentification CHAP

targetcli

/> iscsi/iqn.2024-01.com.example:storage.target1/tpg1/acls/iqn.2024-01.com.example:client1 set auth userid=user1
/> iscsi/iqn.2024-01.com.example:storage.target1/tpg1/acls/iqn.2024-01.com.example:client1 set auth password=secretpassword

/> saveconfig
/> exit

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5. Firewall

ufw allow 3260/tcp
ufw reload

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6. Client iSCSI (Initiator)

apt install -y open-iscsi

# IQN
vim /etc/iscsi/initiatorname.iscsi

InitiatorName=iqn.2024-01.com.example:client1

# CHAP (si activé)
vim /etc/iscsi/iscsid.conf

node.session.auth.authmethod = CHAP
node.session.auth.username = user1
node.session.auth.password = secretpassword

systemctl restart iscsid open-iscsi

# Découvrir
iscsiadm -m discovery -t sendtargets -p 192.168.1.10

# Connecter
iscsiadm -m node -T iqn.2024-01.com.example:storage.target1 -p 192.168.1.10 --login

# Vérifier
lsblk

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7. Monter

mkfs.ext4 /dev/sdb
mkdir /mnt/iscsi
mount /dev/sdb /mnt/iscsi

echo "/dev/sdb /mnt/iscsi ext4 _netdev 0 0" >> /etc/fstab

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Comparatif Rocky vs Debian

Aspect	Rocky 9	Debian 12
Package	targetcli	targetcli-fb
Service	target	rtslib-fb-targetctl
Client	iscsi-initiator-utils	open-iscsi

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Vérification

targetcli ls
iscsiadm -m session
lsblk

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Changelog

Date	Modification
2024-12	Création initiale