[nix-book] Update drive UUID

build-liveusb.sh

@@ -1,19 +0,0 @@
-#!/usr/bin/env bash
-
-# Build Live USB ISO from flake configuration
-# Creates an uncompressed ISO suitable for Ventoy and other USB boot tools
-
-set -e
-
-echo "Building Live USB ISO..."
-nix build .#nixosConfigurations.live-usb.config.system.build.isoImage --show-trace
-
-if [ -f "./result/iso/"*.iso ]; then
-    iso_file=$(ls ./result/iso/*.iso)
-    echo "✅ Build complete!"
-    echo "📁 ISO location: $iso_file"
-    echo "💾 Ready for Ventoy or dd to USB"
-else
-    echo "❌ Build failed - no ISO file found"
-    exit 1
-fi

flake.nix

@@ -74,18 +74,6 @@
       ];
     };
 
-    # Live USB ISO configuration
-    nixosConfigurations.live-usb = nixpkgs.lib.nixosSystem rec {
-      system = "x86_64-linux";
-      modules = baseModules ++ [
-        ./machines/live-usb/configuration.nix
-        {
-          home-manager.users.johno = import ./home/home.nix;
-          home-manager.extraSpecialArgs = { inherit system; };
-        }
-      ];
-    };
-
     homeConfigurations."johno" = inputs.home-manager.lib.homeManagerConfiguration {
       pkgs = inputs.nixpkgs.legacyPackages."x86_64-linux";
       modules = [

machines/live-usb/configuration.nix

@@ -1,95 +0,0 @@
-# Live USB ISO configuration for recovery and installation
-{ pkgs, modulesPath, ... }:
-
-{
-  imports = [
-    # Use minimal installation CD as base
-    (modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix")
-  ];
-
-  # Use roles structure for consistent configuration
-  roles = {
-    audio.enable = true;
-    bluetooth.enable = true;
-    users = {
-      enable = true;
-      extraGroups = [ "video" "wheel" "networkmanager" ];
-    };
-  };
-
-  # Allow unfree packages for broader hardware support
-  nixpkgs.config.allowUnfree = true;
-
-  # Essential packages for system recovery and installation
-  environment.systemPackages = with pkgs; [
-    # Text editors
-    neovim
-    nano
-    
-    # System tools
-    git
-    curl
-    wget
-    htop
-    tree
-    lsof
-    strace
-    
-    # Filesystem tools
-    btrfs-progs
-    e2fsprogs
-    xfsprogs
-    ntfs3g
-    dosfstools
-    
-    # Network tools
-    networkmanager
-    wirelesstools
-    
-    # Hardware tools
-    pciutils
-    usbutils
-    smartmontools
-    
-    # Archive tools
-    unzip
-    p7zip
-    
-    # Development tools (for quick fixes)
-    gcc
-    binutils
-  ];
-
-  # Enable NetworkManager for easy wifi setup
-  networking.networkmanager.enable = true;
-  
-  # Enable SSH daemon for remote access
-  services.openssh = {
-    enable = true;
-    settings = {
-      PermitRootLogin = "yes";
-      PasswordAuthentication = true;
-    };
-  };
-
-  # Override default nixos user, set johno as the main user with password
-  users.users.nixos.enable = false;
-  users.users.johno = {
-    isNormalUser = true;
-    description = "John Ogle";  
-    extraGroups = [ "wheel" "networkmanager" "audio" "video" ];
-    password = "nixos";  # Simple password for live environment
-  };
-
-  # ISO customization
-  isoImage = {
-    volumeID = "NIXOS-LIVE";
-  };
-
-  # Enable some useful services
-  services.udisks2.enable = true; # For mounting USB drives
-
-  # Hardware support
-  hardware.enableAllFirmware = true;
-  hardware.enableRedistributableFirmware = true;
-}

machines/nix-book/configuration.nix

@@ -39,6 +39,15 @@
 
   boot.kernelPackages = pkgs.linuxPackages_latest;
 
+  # Btrfs deduplication service
+  services.beesd.filesystems = {
+    root = {
+      spec = "/";
+      hashTableSizeMB = 32;  # 128MB per TB recommended, ~225GB = ~32MB
+      verbosity = "err";     # Only show actual problems
+    };
+  };
+
   # Enable networking
   networking.networkmanager.enable = true;
 

machines/nix-book/hardware-configuration.nix

@@ -14,8 +14,12 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/bd396529-e2c4-47cb-b844-8d6ed841f81a";
+    { device = "/dev/disk/by-uuid/223a44e5-91e2-4272-830e-129166042a1d";
-      fsType = "ext4";
+      fsType = "btrfs";
+      options = [ 
+        "compress=zstd"  # Enable zstd compression for space savings
+        "noatime"        # Don't update access times for performance
+      ];
     };
 
   boot.initrd.luks.devices."luks-4126fbd4-bd09-4ece-af0d-6fff414c21b3".device = "/dev/disk/by-uuid/4126fbd4-bd09-4ece-af0d-6fff414c21b3";

machines/nix-book/nixbook-btrfs-migration.md

@@ -0,0 +1,223 @@
+# NixBook ext4 to btrfs Migration Guide
+
+## Overview
+This guide converts your nixbook machine from ext4 to btrfs with zstd compression and beesd deduplication while preserving your LUKS encryption and all data.
+
+## Current System Info
+- **Hostname**: nix-book
+- **Root filesystem**: ext4 on `/dev/disk/by-uuid/bd396529-e2c4-47cb-b844-8d6ed841f81a`
+- **Encryption**: LUKS with two devices configured
+- **Current usage**: 138GB used / 225GB total (65% full)
+- **Free space**: 76GB available (sufficient for conversion)
+
+## Pre-Migration Checklist
+
+### 1. Create Full System Backup (CRITICAL)
+```bash
+# Boot from NixOS live USB
+# Mount encrypted filesystem
+cryptsetup luksOpen /dev/disk/by-uuid/4126fbd4-bd09-4ece-af0d-6fff414c21b3 luks-nixbook
+mount /dev/mapper/luks-nixbook /mnt
+
+# Create backup to external drive (adjust target as needed)
+rsync -avxHAX --progress /mnt/ /path/to/backup/nixbook-backup/
+```
+
+### 2. Verify Configuration Changes
+The following files have been updated for btrfs:
+- `machines/nix-book/configuration.nix` - Added beesd service
+- `machines/nix-book/hardware-configuration.nix` - Changed fsType to btrfs with compression
+
+## Migration Process
+
+### Phase 1: Boot to Live Environment
+1. **Create NixOS live USB**:
+   ```bash
+   # Download latest NixOS ISO
+   # Flash to USB drive
+   dd if=nixos-minimal-xx.xx-x86_64-linux.iso of=/dev/sdX bs=4M status=progress
+   ```
+
+2. **Boot from live USB** and ensure you can access the encrypted drives
+
+### Phase 2: Filesystem Conversion
+3. **Unlock LUKS volumes**:
+   ```bash
+   cryptsetup luksOpen /dev/disk/by-uuid/4126fbd4-bd09-4ece-af0d-6fff414c21b3 luks-nixbook
+   cryptsetup luksOpen /dev/disk/by-uuid/b614167b-9045-4234-a441-ac6f60a96d81 luks-nixbook2
+   ```
+
+4. **Check filesystem before conversion**:
+   ```bash
+   fsck.ext4 -f /dev/mapper/luks-nixbook
+   ```
+
+5. **Convert ext4 to btrfs** (this preserves all data):
+   ```bash
+   # Install btrfs-progs if not available
+   nix-shell -p btrfs-progs
+
+   # Convert the filesystem (takes 15-45 minutes depending on data)
+   btrfs-convert /dev/mapper/luks-nixbook
+   
+   # Verify conversion succeeded
+   mount /dev/mapper/luks-nixbook /mnt
+   ls -la /mnt  # Should show your normal filesystem
+   btrfs filesystem show /mnt
+   ```
+
+6. **Get new filesystem UUID** (may have changed):
+   ```bash
+   blkid /dev/mapper/luks-nixbook
+   # Note the new UUID if it changed
+   ```
+
+### Phase 3: Configuration Update
+7. **Mount and chroot into system**:
+   ```bash
+   mount -o compress=zstd,noatime /dev/mapper/luks-nixbook /mnt
+   mount /dev/disk/by-uuid/7A0B-CF88 /mnt/boot
+   nixos-enter --root /mnt
+   ```
+
+8. **Update hardware-configuration.nix** if UUID changed:
+   ```bash
+   # Edit /etc/nixos/hardware-configuration.nix if needed
+   # Update the UUID in fileSystems."/" section
+   ```
+
+9. **Rebuild system with btrfs configuration**:
+   ```bash
+   cd /home/johno/nixos-configs
+   nixos-rebuild switch --flake .#nix-book
+   ```
+
+### Phase 4: Enable Compression and Deduplication
+10. **Reboot into new btrfs system**:
+    ```bash
+    exit  # Exit chroot
+    umount -R /mnt
+    reboot
+    ```
+
+11. **Verify btrfs is working**:
+    ```bash
+    mount | grep btrfs
+    btrfs filesystem usage /
+    ```
+
+12. **Enable and start beesd**:
+    ```bash
+    systemctl status beesd-root
+    systemctl start beesd-root
+    systemctl enable beesd-root
+    ```
+
+13. **Force compression on existing files** (optional but recommended):
+    ```bash
+    # This will compress existing files with zstd
+    btrfs filesystem defragment -r -czstd /
+    ```
+
+## Post-Migration Verification
+
+### Check System Health
+```bash
+# Verify btrfs health
+btrfs scrub start /
+btrfs scrub status /
+
+# Check compression effectiveness
+compsize /
+
+# Monitor beesd deduplication
+journalctl -u beesd-root -f
+
+# Check filesystem usage
+btrfs filesystem usage /
+df -h /
+```
+
+### Performance Monitoring
+```bash
+# Monitor beesd hash table
+ls -lh /.beeshash
+
+# Check compression ratio over time
+compsize /home /nix /var
+```
+
+## Expected Benefits
+
+### Space Savings
+- **Compression**: 20-30% reduction in disk usage from zstd
+- **Deduplication**: Additional 10-20% savings on duplicate files
+- **Combined**: Potentially 30-40% total space savings
+
+### Performance Impact
+- **Compression**: Minimal CPU overhead, often improves I/O performance
+- **Deduplication**: Background process, minimal impact during normal use
+- **Overall**: Should be neutral to positive performance impact
+
+## Rollback Plan (Emergency)
+
+If something goes wrong:
+
+1. **Boot from live USB**
+2. **Restore from backup**:
+   ```bash
+   cryptsetup luksOpen /dev/disk/by-uuid/4126fbd4-bd09-4ece-af0d-6fff414c21b3 luks-nixbook
+   mkfs.ext4 /dev/mapper/luks-nixbook
+   mount /dev/mapper/luks-nixbook /mnt
+   rsync -avxHAX --progress /path/to/backup/nixbook-backup/ /mnt/
+   ```
+3. **Restore original hardware-configuration.nix** with ext4 settings
+4. **Rebuild and reboot**
+
+## Troubleshooting
+
+### Common Issues
+
+**"Device busy" during conversion**:
+- Ensure no processes are accessing the filesystem
+- Check with `lsof` and `fuser`
+
+**UUID changed after conversion**:
+- Update hardware-configuration.nix with new UUID
+- Regenerate initrd: `nixos-rebuild switch`
+
+**Beesd service fails to start**:
+- Check disk space for hash table
+- Verify filesystem is btrfs: `mount | grep btrfs`
+- Check logs: `journalctl -u beesd-root`
+
+**Boot issues after conversion**:
+- Boot from live USB
+- Check /boot partition is mounted correctly
+- Verify LUKS UUIDs match in configuration
+- Rebuild bootloader: `nixos-rebuild switch --install-bootloader`
+
+## Maintenance
+
+### Regular Tasks
+```bash
+# Monthly scrub (checks for corruption)
+btrfs scrub start /
+
+# Monitor compression effectiveness
+compsize /
+
+# Check beesd deduplication status
+systemctl status beesd-root
+```
+
+### Space Management
+```bash
+# Balance filesystem (defragments and optimizes)
+btrfs balance start -dusage=50 /
+
+# Check for space issues
+btrfs filesystem usage /
+```
+
+This migration preserves all your data while gaining the benefits of modern btrfs features including transparent compression and automatic deduplication.