ISCSI. AlmaLinux 8. ISCSI-target
Server iSCSI-target
Targetcli installation
Install targetcli for iSCSI target management
dnf -y install targetcli
File-extent as disk image over iSCSI
Enter shell
targetcli
Create target for disk01 img
/> cd /iscsi
/> create iqn.2023-04.al8-test.iscsi:disk01
/> ls
Create disk image (extent)
/> cd backstores/fileio
/backstores/fileio> create disk01 /home/disk01.img 3G
Optionally, delete
/backstores/fileio> delete disk01
Bind disk image to LUN0
/> cd /iscsi/iqn.2023-04.al8-test.iscsi:disk01/tpg1/luns
/iscsi/iqn.20...k01/tpg1/luns> create /backstores/fileio/disk01
/iscsi/iqn.20...k01/tpg1/luns> ls
Optionally, delete
/iscsi/iqn.20...k01/tpg1/luns> delete 0
Bind initiator to tpg1 (Target group)
cd /iscsi/iqn.2023-04.al8-test.iscsi:disk01/tpg1/acls
/iscsi/iqn.20...k01/tpg1/acls> create iqn.2023-04.al8-test.iscsi:pve01-test.initiator01
Start and enable iscsi-target service
systemctl enable --now target
-OR-
systemctl restart target
Check if the service is running and listening on the port 3260
netstat -luptn
... LISTEN 0 256 0.0.0.0:3260 0.0.0.0:* ...
ZFS-Volume as disk image over iSCSI
Create ZFS-Volume
zfs create -V 2G d1/zvol01
zfs list
... d1/zvol01 2.06G 22.3G 12K - ...
Enter shell
targetcli
Create block backstore
/> cd /backstores/block
/> /backstores/block> create name=zvol01 dev=/dev/zvol/d1/zvol01
Create target
/> cd /iscsi
/> /iscsi> create iqn.2023-04.al8-test.iscsi:zvol01
/> cd /iscsi/iqn.2023-04.al8-test.iscsi:zvol01/tpg1/luns
/> /iscsi/iqn.20...l01/tpg1/luns> create /backstores/block/zvol01
Bind initiator to tpg1 (Target group)
/> cd /iscsi/iqn.2023-04.al8-test.iscsi:zvol01/tpg1/acls
/> /iscsi/iqn.20...l01/tpg1/acls> create iqn.2023-04.al8-test.iscsi:pve01-test.initiator01
/> exit
systemctl restart target
Client iSCSI-initiator
Dedicated article: ISCSI. AlmaLinux 8. ISCSI-Initiator
Initiator name
nano /etc/iscsi/initiatorname.iscsi
InitiatorName=iqn.2023-01.alef:al8-test01
Discovery target
iscsiadm -m discovery -t st -p 192.168.199.173
... 192.168.199.173:3260,1 iqn.2023-04.al8-test.iscsi:disk01 ...
Connect to target
iscsiadm -m node --targetname "iqn.2023-04.al8-test.iscsi:disk01" --portal "192.168.199.173:3260" --login
Block device is connectedlsblk
... sdb 8:16 0 3G 0 disk ...