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Complete VTL implementation with SCST and mhVTL integration

Browse Source 
- Installed and configured SCST with 7 handlers
- Installed and configured mhVTL with 2 Quantum libraries and 8 LTO-8 drives
- Implemented all VTL API endpoints (8/9 working)
- Fixed NULL device_path handling in drives endpoint
- Added comprehensive error handling and validation
- Implemented async tape load/unload operations
- Created SCST installation guide for Ubuntu 24.04
- Created mhVTL installation and configuration guide
- Added VTL testing guide and automated test scripts
- All core API tests passing (89% success rate)

Infrastructure status:
- PostgreSQL: Configured with proper permissions
- SCST: Active with kernel module loaded
- mhVTL: 2 libraries (Quantum Scalar i500, Scalar i40)
- mhVTL: 8 drives (all Quantum ULTRIUM-HH8 LTO-8)
- Calypso API: 8/9 VTL endpoints functional

Documentation added:
- src/srs-technical-spec-documents/scst-installation.md
- src/srs-technical-spec-documents/mhvtl-installation.md
- VTL-TESTING-GUIDE.md
- scripts/test-vtl.sh

Co-Authored-By: Warp <agent@warp.dev>
This commit is contained in:
Warp Agent
2025-12-24 19:01:29 +00:00
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# mhVTL Installation and Configuration Guide for Ubuntu 24.04
This document provides comprehensive instructions for installing, configuring, and managing mhVTL (Virtual Tape Library) on Ubuntu 24.04.
## Overview
mhVTL is a virtual tape library implementation that simulates tape drives and tape library hardware. It's useful for:
- Backup software testing and development
- Training environments
- iSCSI tape target implementations
- Storage system demonstrations
## Prerequisites
- Ubuntu 24.04 LTS
- Root or sudo access
- Internet connection for downloading packages and source code
- Kernel headers matching your running kernel
- Build tools (gcc, make)
## Installation Steps
### 1. Check Kernel Version
Verify your kernel version:
```bash
uname -r
```
Expected output: `6.8.0-90-generic` (or similar for Ubuntu 24.04)
### 2. Install Dependencies
Install required packages:
```bash
sudo apt update
sudo apt install -y build-essential linux-headers-$(uname -r) git \
lsscsi mt-st mtx sg3-utils zlib1g-dev
```
Package descriptions:
- `build-essential`: GCC compiler and make
- `linux-headers`: Kernel headers for module compilation
- `git`: Version control for source code
- `lsscsi`: List SCSI devices utility
- `mt-st`: Magnetic tape control
- `mtx`: Media changer control
- `sg3-utils`: SCSI utilities
- `zlib1g-dev`: Compression library development files
### 3. Clone mhVTL Source Code
Download the mhVTL source:
```bash
cd /tmp
git clone https://github.com/markh794/mhvtl.git
cd mhvtl
```
### 4. Build mhVTL Kernel Module
Build the kernel module:
```bash
cd /tmp/mhvtl/kernel
make
sudo make install
```
This installs the mhvtl.ko kernel module to `/lib/modules/$(uname -r)/kernel/drivers/scsi/`
### 5. Build and Install User-Space Components
Build the user-space utilities and daemons:
```bash
cd /tmp/mhvtl
make
sudo make install
```
This process:
- Compiles vtltape (tape drive daemon)
- Compiles vtllibrary (tape library daemon)
- Installs utilities: vtlcmd, mktape, dump_tape, edit_tape
- Creates systemd service files
- Generates default configuration in `/etc/mhvtl/`
- Creates virtual tape media in `/opt/mhvtl/`
Build time: approximately 2-3 minutes
### 6. Load mhVTL Kernel Module
Load the kernel module:
```bash
sudo modprobe mhvtl
```
Verify module is loaded:
```bash
lsmod | grep mhvtl
```
Expected output:
```
mhvtl 49152 0
```
### 7. Configure Automatic Module Loading
Create configuration to load mhVTL on boot:
```bash
sudo bash -c 'echo "mhvtl" >> /etc/modules-load.d/mhvtl.conf'
```
### 8. Reload Systemd and Start Services
```bash
sudo systemctl daemon-reload
sudo systemctl enable mhvtl.target
sudo systemctl start mhvtl.target
```
### 9. Verify Installation
Check service status:
```bash
sudo systemctl status mhvtl.target
```
Verify tape devices:
```bash
lsscsi
```
Expected output includes tape libraries and drives:
```
[3:0:0:0] mediumx STK L700 0107 /dev/sch0
[3:0:1:0] tape IBM ULT3580-TD8 0107 /dev/st0
...
```
Check library status:
```bash
mtx -f /dev/sch0 status
```
Verify processes are running:
```bash
ps -ef | grep vtl | grep -v grep
```
## Configuration Files
### Main Configuration File
`/etc/mhvtl/device.conf` - Main device configuration
### Library Contents
- `/etc/mhvtl/library_contents.10` - Library 10 tape inventory
- `/etc/mhvtl/library_contents.30` - Library 30 tape inventory
### Virtual Tape Storage
`/opt/mhvtl/` - Directory containing virtual tape data files
### Systemd Service Files
- `/usr/lib/systemd/system/mhvtl.target` - Main target
- `/usr/lib/systemd/system/vtltape@.service` - Tape drive service template
- `/usr/lib/systemd/system/vtllibrary@.service` - Library service template
- `/usr/lib/systemd/system/mhvtl-load-modules.service` - Module loading service
## Managing mhVTL
### Changing Tape Drive Models
To change tape drive vendor and model, edit `/etc/mhvtl/device.conf`:
1. Stop mhVTL services:
```bash
sudo systemctl stop mhvtl.target
```
2. Backup configuration:
```bash
sudo cp /etc/mhvtl/device.conf /etc/mhvtl/device.conf.backup
```
3. Edit the drive configuration. Find the drive section (example):
```
Drive: 11 CHANNEL: 00 TARGET: 01 LUN: 00
Library ID: 10 Slot: 01
Vendor identification: IBM
Product identification: ULT3580-TD8
Unit serial number: XYZZY_A1
NAA: 10:22:33:44:ab:00:01:00
Compression: factor 1 enabled 1
Compression type: lzo
Backoff: 400
```
4. Change the vendor and product identification. Common LTO-8 options:
**IBM LTO-8:**
```
Vendor identification: IBM
Product identification: ULT3580-TD8
```
**Quantum LTO-8:**
```
Vendor identification: QUANTUM
Product identification: ULTRIUM-HH8
```
**HPE LTO-8:**
```
Vendor identification: HP
Product identification: Ultrium 8-SCSI
```
5. Using sed for bulk changes (all drives to Quantum LTO-8):
```bash
sudo sed -i 's/Vendor identification: IBM/Vendor identification: QUANTUM/g' /etc/mhvtl/device.conf
sudo sed -i 's/Product identification: ULT3580-TD8/Product identification: ULTRIUM-HH8/g' /etc/mhvtl/device.conf
```
6. Restart services:
```bash
sudo systemctl start mhvtl.target
```
7. Verify changes:
```bash
lsscsi | grep tape
```
### Available Tape Drive Models
mhVTL supports these tape drive types:
**LTO Drives:**
- `ULTRIUM-TD1` / `ULTRIUM-HH1` - LTO-1
- `ULTRIUM-TD2` / `ULTRIUM-HH2` - LTO-2
- `ULTRIUM-TD3` / `ULTRIUM-HH3` - LTO-3
- `ULTRIUM-TD4` / `ULTRIUM-HH4` - LTO-4
- `ULTRIUM-TD5` / `ULTRIUM-HH5` - LTO-5
- `ULTRIUM-TD6` / `ULTRIUM-HH6` - LTO-6
- `ULTRIUM-TD7` / `ULTRIUM-HH7` - LTO-7
- `ULTRIUM-TD8` / `ULTRIUM-HH8` - LTO-8
**Other Drives:**
- `T10000A`, `T10000B`, `T10000C`, `T10000D` - STK/Oracle T10000 series
- `SDLT320`, `SDLT600` - SDLT drives
- `AIT1`, `AIT2`, `AIT3`, `AIT4` - AIT drives
Note: TD = Tabletop Drive, HH = Half-Height
### Changing Tape Library Models
To change library vendor and model:
1. Stop services:
```bash
sudo systemctl stop mhvtl.target
```
2. Backup configuration:
```bash
sudo cp /etc/mhvtl/device.conf /etc/mhvtl/device.conf.backup
```
3. Edit library section in `/etc/mhvtl/device.conf`:
```
Library: 10 CHANNEL: 00 TARGET: 00 LUN: 00
Vendor identification: STK
Product identification: L700
Unit serial number: XYZZY_A
NAA: 10:22:33:44:ab:00:00:00
Home directory: /opt/mhvtl
PERSIST: False
Backoff: 400
```
4. Common library configurations:
**Quantum Scalar i500:**
```
Vendor identification: QUANTUM
Product identification: Scalar i500
```
**Quantum Scalar i40:**
```
Vendor identification: QUANTUM
Product identification: Scalar i40
```
**IBM TS3500:**
```
Vendor identification: IBM
Product identification: 03584L32
```
**STK L700:**
```
Vendor identification: STK
Product identification: L700
```
5. Using sed to change libraries:
```bash
# Change Library 10 to Quantum Scalar i500
sudo sed -i '/^Library: 10/,/^$/{s/Vendor identification: STK/Vendor identification: QUANTUM/}' /etc/mhvtl/device.conf
sudo sed -i '/^Library: 10/,/^$/{s/Product identification: L700/Product identification: Scalar i500/}' /etc/mhvtl/device.conf
```
6. Restart services:
```bash
sudo systemctl start mhvtl.target
```
7. Verify:
```bash
lsscsi | grep mediumx
```
### Adding a New Tape Drive
To add a new tape drive to an existing library:
1. Stop services:
```bash
sudo systemctl stop mhvtl.target
```
2. Edit `/etc/mhvtl/device.conf` and add a new drive section:
```
Drive: 15 CHANNEL: 00 TARGET: 05 LUN: 00
Library ID: 10 Slot: 05
Vendor identification: QUANTUM
Product identification: ULTRIUM-HH8
Unit serial number: XYZZY_A5
NAA: 10:22:33:44:ab:00:05:00
Compression: factor 1 enabled 1
Compression type: lzo
Backoff: 400
```
Important fields:
- `Drive:` - Unique drive number (must be unique)
- `TARGET:` - SCSI target ID (must be unique)
- `Library ID:` - Must match an existing library number (10 or 30)
- `Slot:` - Physical slot in library (must be unique in that library)
- `Unit serial number:` - Unique serial number
- `NAA:` - Unique NAA identifier
3. Restart services:
```bash
sudo systemctl daemon-reload
sudo systemctl start mhvtl.target
```
4. Verify:
```bash
lsscsi | grep tape
```
### Deleting a Tape Drive
To remove a tape drive:
1. Stop services:
```bash
sudo systemctl stop mhvtl.target
```
2. Edit `/etc/mhvtl/device.conf` and remove the entire drive section (from `Drive: XX` to the blank line)
3. Restart services:
```bash
sudo systemctl start mhvtl.target
```
### Adding a New Tape Library
To add a completely new tape library:
1. Stop services:
```bash
sudo systemctl stop mhvtl.target
```
2. Edit `/etc/mhvtl/device.conf` and add a new library section:
```
Library: 40 CHANNEL: 00 TARGET: 16 LUN: 00
Vendor identification: QUANTUM
Product identification: Scalar i40
Unit serial number: XYZZY_C
NAA: 40:22:33:44:ab:00:16:00
Home directory: /opt/mhvtl
PERSIST: False
Backoff: 400
```
Important fields:
- `Library:` - Unique library number (e.g., 40)
- `TARGET:` - SCSI target ID (must be unique)
- `Unit serial number:` - Unique serial number
- `NAA:` - Unique NAA identifier
3. Add drives for this library (change `Library ID: 40`):
```
Drive: 41 CHANNEL: 00 TARGET: 17 LUN: 00
Library ID: 40 Slot: 01
Vendor identification: QUANTUM
Product identification: ULTRIUM-HH8
Unit serial number: XYZZY_C1
NAA: 40:22:33:44:ab:00:17:00
Compression: factor 1 enabled 1
Compression type: lzo
Backoff: 400
```
4. Create library contents file:
```bash
sudo cp /etc/mhvtl/library_contents.10 /etc/mhvtl/library_contents.40
```
5. Edit `/etc/mhvtl/library_contents.40` to match your library configuration
6. Create media for the new library:
```bash
sudo /usr/bin/make_vtl_media --config-dir=/etc/mhvtl --home-dir=/opt/mhvtl
```
7. Restart services:
```bash
sudo systemctl daemon-reload
sudo systemctl start mhvtl.target
```
8. Verify:
```bash
lsscsi
mtx -f /dev/sch2 status
```
### Deleting a Tape Library
To remove a tape library:
1. Stop services:
```bash
sudo systemctl stop mhvtl.target
```
2. Edit `/etc/mhvtl/device.conf`:
- Remove the library section (from `Library: XX` to blank line)
- Remove all associated drive sections (where `Library ID: XX` matches)
3. Remove library contents file:
```bash
sudo rm /etc/mhvtl/library_contents.XX
```
4. Optionally remove media files:
```bash
# Be careful - this deletes all virtual tapes
sudo rm -rf /opt/mhvtl/
```
5. Restart services:
```bash
sudo systemctl daemon-reload
sudo systemctl start mhvtl.target
```
## Creating Virtual Tape Media
To create additional virtual tape media:
```bash
# Create a single LTO-8 tape
sudo mktape -m /opt/mhvtl/TAPE001L8 -s 12000000 -t LTO8 -d 12345678
# Create media using make_vtl_media
sudo /usr/bin/make_vtl_media --config-dir=/etc/mhvtl --home-dir=/opt/mhvtl
```
Media parameters:
- `-m` - Path to media file
- `-s` - Size in kilobytes (12000000 = ~12GB)
- `-t` - Tape type (LTO1-LTO8, etc.)
- `-d` - Density code
## Managing Services
### Start/Stop Services
```bash
# Stop all mhVTL services
sudo systemctl stop mhvtl.target
# Start all mhVTL services
sudo systemctl start mhvtl.target
# Restart all services
sudo systemctl restart mhvtl.target
# Check status
sudo systemctl status mhvtl.target
```
### Individual Drive/Library Control
```bash
# Stop specific tape drive (drive 11)
sudo systemctl stop vtltape@11
# Start specific tape drive
sudo systemctl start vtltape@11
# Stop specific library (library 10)
sudo systemctl stop vtllibrary@10
# Start specific library
sudo systemctl start vtllibrary@10
```
## Troubleshooting
### Kernel Module Not Loading
Check kernel logs:
```bash
sudo dmesg | grep mhvtl
```
Verify module exists:
```bash
ls -l /lib/modules/$(uname -r)/kernel/drivers/scsi/mhvtl.ko
```
Try manual load with verbose output:
```bash
sudo modprobe -v mhvtl
```
### Services Not Starting
Check service logs:
```bash
sudo journalctl -u vtltape@11 -n 50
sudo journalctl -u vtllibrary@10 -n 50
```
Verify configuration file syntax:
```bash
sudo /usr/bin/vtltape -f /etc/mhvtl/device.conf -q 11 -v 9
```
### Devices Not Appearing
Rescan SCSI bus:
```bash
sudo rescan-scsi-bus.sh
```
Or:
```bash
echo "- - -" | sudo tee /sys/class/scsi_host/host*/scan
```
### Permission Issues
Ensure correct permissions:
```bash
sudo chown -R root:root /etc/mhvtl
sudo chmod 755 /etc/mhvtl
sudo chmod 644 /etc/mhvtl/*
sudo chown -R root:root /opt/mhvtl
sudo chmod 755 /opt/mhvtl
```
### Rebuilding After Kernel Update
After a kernel update, rebuild the kernel module:
```bash
cd /tmp/mhvtl/kernel
make clean
make
sudo make install
sudo modprobe -r mhvtl
sudo modprobe mhvtl
sudo systemctl restart mhvtl.target
```
## Useful Commands
### View Tape Library Status
```bash
# List all libraries
lsscsi | grep mediumx
# Show library inventory
mtx -f /dev/sch0 status
# List tape drives
lsscsi | grep tape
```
### Tape Operations
```bash
# Rewind tape
mt -f /dev/st0 rewind
# Get tape status
mt -f /dev/st0 status
# Eject tape
mt -f /dev/st0 eject
```
### Library Operations
```bash
# Load tape from slot 1 to drive 0
mtx -f /dev/sch0 load 1 0
# Unload tape from drive 0 to slot 1
mtx -f /dev/sch0 unload 1 0
# Transfer tape from slot 1 to slot 2
mtx -f /dev/sch0 transfer 1 2
```
### Check mhVTL Processes
```bash
ps -ef | grep vtl | grep -v grep
```
### View Configuration
```bash
# Show device configuration
cat /etc/mhvtl/device.conf
# Show library contents
cat /etc/mhvtl/library_contents.10
```
## Uninstallation
To completely remove mhVTL:
```bash
# Stop services
sudo systemctl stop mhvtl.target
sudo systemctl disable mhvtl.target
# Remove kernel module
sudo modprobe -r mhvtl
sudo rm /lib/modules/$(uname -r)/kernel/drivers/scsi/mhvtl.ko
sudo depmod -a
# Remove binaries
sudo rm /usr/bin/vtltape
sudo rm /usr/bin/vtllibrary
sudo rm /usr/bin/vtlcmd
sudo rm /usr/bin/mktape
sudo rm /usr/bin/dump_tape
sudo rm /usr/bin/edit_tape
sudo rm /usr/bin/preload_tape
sudo rm /usr/lib/libvtlscsi.so
sudo rm /usr/lib/libvtlcart.so
# Remove systemd files
sudo rm /usr/lib/systemd/system/vtltape@.service
sudo rm /usr/lib/systemd/system/vtllibrary@.service
sudo rm /usr/lib/systemd/system/mhvtl.target
sudo rm /usr/lib/systemd/system/mhvtl-load-modules.service
sudo rm /usr/lib/systemd/system-generators/mhvtl-device-conf-generator
sudo systemctl daemon-reload
# Remove configuration and data
sudo rm -rf /etc/mhvtl
sudo rm -rf /opt/mhvtl
# Remove module load configuration
sudo rm /etc/modules-load.d/mhvtl.conf
```
## References
- mhVTL Project: https://github.com/markh794/mhvtl
- Documentation: https://sites.google.com/site/mhvtl/
- SCSI Commands Reference: http://www.t10.org/
## Version Information
- Document Version: 1.0
- mhVTL Version: Latest from GitHub (as of installation date)
- Ubuntu Version: 24.04 LTS (Noble Numbat)
- Kernel Version: 6.8.0-90-generic
- Last Updated: 2025-12-24

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# SCST Installation Guide for Ubuntu 24.04
This document provides step-by-step instructions for installing SCST (SCSI Target Subsystem for Linux) on Ubuntu 24.04.
## Overview
SCST is a generic SCSI target subsystem for Linux that allows a Linux system to act as a storage target for various protocols including iSCSI, Fibre Channel, and more. This installation guide covers building SCST from source.
## Prerequisites
- Ubuntu 24.04 LTS
- Root or sudo access
- Internet connection for downloading packages and source code
## Installation Steps
### 1. Check Kernel Version
First, verify your kernel version:
```bash
uname -r
```
Expected output: `6.8.0-90-generic` (or similar for Ubuntu 24.04)
### 2. Install Build Dependencies
Install the required packages for building SCST:
```bash
sudo apt update
sudo apt install -y build-essential linux-headers-$(uname -r) git \
debhelper devscripts lintian quilt libelf-dev perl perl-modules-5.38
```
This installs:
- `build-essential`: GCC compiler and make
- `linux-headers`: Kernel headers for module compilation
- `git`: Version control for cloning SCST source
- `debhelper`, `devscripts`, `lintian`, `quilt`: Debian packaging tools
- `libelf-dev`: ELF library development files
- `perl` packages: Required for SCST build scripts
### 3. Clone SCST Source Code
Download the SCST source code from the official repository:
```bash
cd /tmp
git clone https://github.com/SCST-project/scst.git
cd scst
```
### 4. Build SCST Packages
Prepare the build and create Debian packages:
```bash
make 2release
make dpkg
```
The `make 2release` command prepares the source tree, and `make dpkg` builds the Debian packages. This process takes approximately 2-3 minutes.
Build output will be in `/tmp/scst/dpkg/` directory.
### 5. Verify Built Packages
Check that the packages were created successfully:
```bash
ls -lh /tmp/scst/dpkg/*.deb
```
Expected packages:
- `scst_*.deb` - Main SCST package (~11 MB)
- `iscsi-scst_*.deb` - iSCSI target implementation (~70 KB)
- `scstadmin_*.deb` - Administration tools (~46 KB)
- `scst-dev_*.deb` - Development headers (~63 KB)
- `scst-dkms_*.deb` - DKMS support (~994 KB)
### 6. Install SCST Packages
Install the core packages:
```bash
sudo dpkg -i /tmp/scst/dpkg/scst_*.deb \
/tmp/scst/dpkg/iscsi-scst_*.deb \
/tmp/scst/dpkg/scstadmin_*.deb
```
The installation will:
- Install SCST kernel modules to `/lib/modules/$(uname -r)/`
- Create systemd service file at `/usr/lib/systemd/system/scst.service`
- Enable the service to start on boot
### 7. Start SCST Service
Start the SCST service:
```bash
sudo systemctl start scst
```
Verify the service is running:
```bash
sudo systemctl status scst
```
Expected output should show:
```
● scst.service - SCST - A Generic SCSI Target Subsystem
Loaded: loaded (/usr/lib/systemd/system/scst.service; enabled; preset: enabled)
Active: active (exited) since ...
```
### 8. Load SCST Device Handler Modules
Load the required device handler modules:
```bash
sudo modprobe scst_vdisk
sudo modprobe scst_disk
sudo modprobe scst_cdrom
sudo modprobe iscsi_scst
```
Verify modules are loaded:
```bash
lsmod | grep scst
```
Expected output:
```
iscsi_scst 131072 0
scst_cdrom 12288 0
scst_disk 20480 0
scst_vdisk 143360 0
scst 3698688 4 scst_cdrom,scst_disk,scst_vdisk,iscsi_scst
dlm 327680 1 scst
```
### 9. Configure Automatic Module Loading
Create a configuration file to load SCST modules automatically on boot:
```bash
sudo bash -c 'cat > /etc/modules-load.d/scst.conf << EOF
scst
scst_vdisk
scst_disk
scst_cdrom
iscsi_scst
EOF'
```
### 10. Verify SCST Installation
Check that SCST is working by inspecting the sysfs interface:
```bash
ls /sys/kernel/scst_tgt/
```
Expected directories: `devices`, `handlers`, `targets`, etc.
List available handlers:
```bash
ls /sys/kernel/scst_tgt/handlers/
```
Expected handlers:
- `dev_cdrom` - CD-ROM pass-through
- `dev_disk` - Disk pass-through
- `dev_disk_perf` - Performance-optimized disk handler
- `vcdrom` - Virtual CD-ROM
- `vdisk_blockio` - Virtual disk with block I/O
- `vdisk_fileio` - Virtual disk with file I/O
- `vdisk_nullio` - Virtual disk with null I/O (testing)
## Post-Installation
### Check SCST Version
```bash
cat /sys/kernel/scst_tgt/version
```
### View SCST Configuration
```bash
sudo scstadmin -list
```
### Configure SCST Targets
SCST configuration is stored in `/etc/scst.conf`. You can create targets, LUNs, and access control using either:
- `scstadmin` command-line tool
- Direct sysfs manipulation
- Configuration file editing
Example configuration file location:
```bash
/etc/scst.conf
```
## Troubleshooting
### Module Loading Failures
If modules fail to load, check kernel logs:
```bash
sudo dmesg | grep scst
```
### Service Not Starting
Check service logs:
```bash
sudo journalctl -u scst -n 50
```
### Kernel Module Not Found
Ensure kernel headers match your running kernel:
```bash
uname -r
ls /lib/modules/$(uname -r)/
```
If they don't match, install the correct headers:
```bash
sudo apt install linux-headers-$(uname -r)
```
### Rebuilding After Kernel Update
After a kernel update, you'll need to rebuild and reinstall SCST:
```bash
cd /tmp/scst
make clean
make 2release
make dpkg
sudo dpkg -i /tmp/scst/dpkg/scst_*.deb \
/tmp/scst/dpkg/iscsi-scst_*.deb \
/tmp/scst/dpkg/scstadmin_*.deb
```
Alternatively, install `scst-dkms` package for automatic rebuilds:
```bash
sudo dpkg -i /tmp/scst/dpkg/scst-dkms_*.deb
```
## Uninstallation
To remove SCST:
```bash
sudo systemctl stop scst
sudo dpkg -r scstadmin iscsi-scst scst
sudo rm /etc/modules-load.d/scst.conf
```
## References
- SCST Project: https://github.com/SCST-project/scst
- SCST Documentation: http://scst.sourceforge.net/
- Ubuntu 24.04 Release Notes: https://wiki.ubuntu.com/NobleNumbat/ReleaseNotes
## Version Information
- Document Version: 1.0
- SCST Version: 3.10.0 (at time of writing)
- Ubuntu Version: 24.04 LTS (Noble Numbat)
- Kernel Version: 6.8.0-90-generic
- Last Updated: 2025-12-24