Add ZFS setup script for macOS on Colima-based environments

Author: bogdan-ts

engine/scripts/init-zfs-colima.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+set -e
+
+POOL_NAME="dblab_pool"
+POOL_MNT="/var/lib/dblab/dblab_pool"
+DISK_FILE="/zfs-disk"
+DATASETS=(dataset_1 dataset_2 dataset_3)
+
+echo "🔍 Checking if zfsutils-linux is installed..."
+if ! command -v zfs >/dev/null 2>&1; then
+  echo "📦 Installing zfsutils-linux..."
+  sudo apt update
+  sudo apt install -y zfsutils-linux
+else
+  echo "✅ ZFS already installed"
+fi
+
+if [ ! -f "$DISK_FILE" ]; then
+  echo "🧱 Creating virtual ZFS disk at $DISK_FILE..."
+  sudo truncate -s 5G "$DISK_FILE"
+else
+  echo "✅ ZFS disk file already exists"
+fi
+
+echo "🔗 Setting up loop device..."
+sudo losetup -fP "$DISK_FILE"
+LOOP=$(sudo losetup -j "$DISK_FILE" | cut -d: -f1)
+
+echo "📂 Checking if pool '$POOL_NAME' exists..."
+if ! zpool list | grep -q "$POOL_NAME"; then
+  echo "🚀 Creating ZFS pool $POOL_NAME..."
+  sudo zpool create -f \
+    -O compression=on \
+    -O atime=off \
+    -O recordsize=128k \
+    -O logbias=throughput \
+    -m "$POOL_MNT" \
+    "$POOL_NAME" \
+    "$LOOP"
+else
+  echo "✅ ZFS pool '$POOL_NAME' already exists"
+fi
+
+echo "📦 Creating base datasets..."
+for DATASET in "${DATASETS[@]}"; do
+  if ! zfs list | grep -q "${POOL_NAME}/${DATASET}"; then
+    echo "📁 Creating dataset ${POOL_NAME}/${DATASET}"
+    sudo zfs create -o mountpoint="${POOL_MNT}/${DATASET}" "${POOL_NAME}/${DATASET}"
+  else
+    echo "⚠️ Dataset '${DATASET}' already exists"
+  fi
+done
+
+echo "✅ ZFS setup complete."