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TrueNAS iSCSI Setup for Linux Clients

🔧 TrueNAS Configuration

1. Create a Zvol

Navigate to Datasets, select your Dataset
Click Add Zvol
- Name: e.g., iscsi-disk01
Size: e.g., 10GiB

Video Compression Using FFmpeg (HEVC / H.265 & H.264)

This note explains how to compress videos using FFmpeg with HEVC (H.265) and H.264 (AVC), focusing on broad compatibility across devices — PCs, TVs, ARM devices, mobile, and browsers.

1. Recommended Format & Codec

Parameter	Recommendation

Drive speed test

This script benchmarks a TrueNAS ZFS pool, including sequential and random I/O tests, and logs results for analysis.

#!/bin/sh
# trueNAS_pool_benchmark.sh
# Usage: sh trueNAS_pool_benchmark.sh <pool_name>
# Example: sh trueNAS_pool_benchmark.sh pool-01

POOL=$1

🌐 IPv6

🔹 IPv4 vs IPv6 Basics

Feature	IPv4	IPv6
Address Size	32-bit (~4.3 billion addresses)	128-bit (~340 undecillion addresses)
Format	4 decimal numbers, dot-separated	8 groups of 4 hex digits, colon-separated
Example	`192.168.0.21`	`2401:xxxx:xxxx:xxxx::21`
NAT	Common (private → public mapping)	Not needed, direct global addressing

TrueNAS on Proxmox with HBA (LSI/Broadcom 9300-16i)

This guide covers:

Checking HBA firmware & mode
Updating firmware (IT mode)
Enabling PCI passthrough in Proxmox
Migrating HDDs from motherboard SATA to HBA
Setting up VFIO bindings
Verifying PCIe lanes per chip
Listing disks per HBA chip

Proxmox PCI Passthrough (IOMMU)

0. BIOS Setup (Required)

Before configuring Proxmox, enable the following in your system BIOS/UEFI:

Intel CPUs:
- Intel Virtualization Technology (VT-x)
- Intel VT-d (Directed I/O)

Docker Build & Cache

1. Build Caching Basics

Docker caches layers based on commands in the Dockerfile.
To take advantage of caching:
- Copy dependency files (pyproject.toml, uv.lock, etc.) before source code.
- Run dependency installation (uv sync, pip install) before copying the app code.
Cache is reused if the files/commands in a layer haven't changed.

Python Setup with `uv`

uv is a fast and modern Python package, environment, and project manager that can:

Install and manage Python versions (like pyenv)
Handle dependencies and virtual environments (like Poetry)
Run CLI tools without global installs (like pipx)

Proxmox LXC

Downloading Templates

Option 1 – Web UI (Easiest)

Open Proxmox Web Interface → Storage (e.g., local, local-lvm).
Select CT Templates.
Click Templates (top-right).
Choose a template (Debian, Ubuntu, Alpine, etc.) → Download.

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