Update Servers/Virtualization/Proxmox/Configuring iSCSI-based Cluster Storage.md

Servers/Virtualization/Proxmox/Configuring iSCSI-based Cluster Storage.md

@@ -56,52 +56,72 @@ zfs create -V ${ZVOL_SIZE} \
 !!! note
     The `refreservation` enforces **true thick provisioning** and prevents overcommit.
 
----
+## Configure iSCSI Target (TrueNAS CORE)
+
+This section uses a **hybrid approach**:
+- **CLI** is used for ZFS and LUN (extent backing) creation
+- **TrueNAS GUI** is used for iSCSI portal, target, and association
+- **CLI** is used again for validation
+
+### Enable iSCSI Service
 
-## Configure iSCSI Target (TrueNAS CLI)
 ```sh
-# Enable iSCSI Service
 service ctld start
 sysrc ctld_enable=YES
+```
 
-# Create iSCSI Portal
-ctladm create -b block -l /dev/zvol/CLUSTER-STORAGE/iscsi-storage iscsi-lun-0
+### Create the iSCSI LUN Backing (CLI)
+This step creates the **actual block-backed LUN** that will be exported via iSCSI.
 
-# Create Target
-ctladm create -t iqn.2026-01.io.bunny-lab:storage
-
-# Create Extent
-ctladm create -b block -l /dev/zvol/${POOL_NAME}/${ZVOL_NAME} proxmox-extent
-
-### Associate Target + Extent
-ctladm add -t proxmox-target -l proxmox-extent
-
-----------
-
-# Enable iSCSI Service (TrueNAS CORE)
-service ctld start
-sysrc ctld_enable=YES
-
-# Sanity Check: Confirm the backing zvol exists
+```sh
+# Sanity check: confirm the backing zvol exists
 ls -l /dev/zvol/${POOL_NAME}/${ZVOL_NAME}
 
-# --- Create the CTL LUN (iSCSI "extent") ---
-# Name identity is carried via Serial Number and Device ID
+# Create CTL LUN backed by the zvol
 ctladm create -b block \
   -o file=/dev/zvol/${POOL_NAME}/${ZVOL_NAME} \
   -S ISCSI-STORAGE \
   -d ISCSI-STORAGE
+```
 
-# Verify the LUN is real and sized correctly (must be NON-ZERO)
+### Verify the LUN is real and correctly sized
+
+```sh
 ctladm devlist -v
 ```
 
 !!! tip
-    At this point, the LUN is live and can be discovered by initiators.
+    `Size (Blocks)` must be **non-zero** and match the zvol size.  If it is `0`, stop and correct before proceeding.
+
+### Configure iSCSI Portal, Target, and Association (GUI)
+In the TrueNAS Web UI, navigate to **Sharing → Block Shares (iSCSI)**:
+
+#### Create Portal
+* **Portals → Add**
+* IP Address: `0.0.0.0`
+* Port: `3260`
+
+#### Create Target
+* **Targets → Add**
+* Target Name: `iqn.2026-01.io.bunny-lab:storage`
+* Authentication: `None`
+* Portal Group: `<Select the portal created above>`
+
+#### Create Extent
+* **Extents → Add**
+* Extent Name: `ISCSI-STORAGE`
+* Extent Type: `Device`
+* Device: `/dev/zvol/${POOL_NAME}/${ZVOL_NAME}` (e.g. `CLUSTER-STORAGE/iscsi-storage (8T)`)
+
+#### Associate Target + Extent
+* **Associated Targets → Add**
+* Target: `iqn.2026-01.io.bunny-lab:storage`
+* Extent: `ISCSI-STORAGE`
+
 
 ## Connect from Proxmox VE Nodes
-
 Perform the following **on each Proxmox node**.
+
 ```sh
 # Install iSCSI Utilities
 apt update
@@ -131,7 +151,6 @@ vgcreate vg_proxmox_iscsi /dev/sdX
 ```
 
 ## Register Storage in Proxmox
-
 ### Rescan LVM (Other Nodes)
 ```sh
 pvscan
@@ -139,7 +158,6 @@ vgscan
 ```
 
 ### Add Storage (GUI or CLI)
-
 **Datacenter → Storage → Add → LVM**
 
 - ID: `iscsi-lvm`