iSCSIADM

Using iscsiadm to manage scsi logins to the storage

Script - Auto discover

Create a script as below

eg. vim iscsi_login_multiple

Fill the script with the following contents

#!/bin/bash

# Check if at least one target IP is provided
if [ $# -eq 0 ]; then
    echo "Usage: $0 <target_IP1> [target_IP2] ... [target_IPn]"
    exit 1
fi

PORT="3260"  # Default iSCSI port

# Loop through each target IP provided as an argument
for TARGET_IP in "$@"; do
    echo "Processing $TARGET_IP..."

    # Discover iSCSI targets on the current IP
    echo "Discovering iSCSI targets on $TARGET_IP..."
    TARGETS=$(iscsiadm -m discovery -t sendtargets -p $TARGET_IP | awk '{print $2}')

    if [ -z "$TARGETS" ]; then
        echo "No targets found on $TARGET_IP"
        continue
    fi

    # Log in to each target and make the sessions persistent
    for TARGET in $TARGETS; do
        echo "Logging in to target $TARGET on $TARGET_IP..."
        iscsiadm -m node -T $TARGET -p $TARGET_IP:$PORT --login
        iscsiadm -m node -T $TARGET -p $TARGET_IP:$PORT --op update -n node.startup -v automatic
    done

    echo "Completed processing $TARGET_IP."
done

echo "All specified targets have been logged in and configured for automatic startup."

Make the script executable

eg. chmod +x iscsi_login_multiple

Run the scipt

You can now run the script and provide all possible iscsi ports on the target storage.

eg. iscsi_login_multiple 192.168.1.100 192.168.1.101 192.168.1.102

This script does not require iqns to establish connections