fix(orion): improve vm build stability

.github/workflows/base.yml

@@ -35,6 +35,7 @@ jobs:
         with:
           submodules: recursive
 
+
       - name: Install nightly toolchain
         run: |
           rustup toolchain install nightly --profile minimal
@@ -58,6 +59,7 @@ jobs:
         with:
           submodules: recursive
 
+
       - name: Install system dependencies
         uses: ./.github/install-dep
         with:
@@ -109,6 +111,7 @@ jobs:
           submodules: recursive
           lfs: true
 
+
       - name: Install system dependencies
         uses: ./.github/install-dep
         with:

.github/workflows/services.yml

@@ -51,6 +51,7 @@ jobs:
         with:
           submodules: recursive
 
+
       # Install system dependencies
       - name: Install system dependencies
         uses: ./.github/install-dep

orion-scheduler/TESTING.md

@@ -91,6 +91,8 @@ VM_IP=$(curl -s http://localhost:8080/status | jq -r .vm_ip)
 ssh -i ~/.ssh/orion_vm_access root@$VM_IP
 ```
 
+部署时 scheduler 会在 guest 内创建 **8 GB** swap 文件（`/swapfile`，写入 `/etc/fstab`），减轻全量 buck2 编译时的内存压力。可用 `swapon --show` / `free -h` 确认。
+
 ### 日志
 
 | 端点 | 格式 | 说明 |

orion-scheduler/src/vm_manager.rs

@@ -11,6 +11,80 @@ use crate::{
 /// The target directory inside the VM guest OS where Orion is deployed
 const ORION_TARGET_DIR: &str = "/home/orion/orion-runner";
 
+/// Swap file path and size bounds for Orion build VMs (16 GB RAM by default).
+const VM_SWAP_FILE: &str = "/swapfile";
+const VM_SWAP_TARGET_SIZE_GB: u32 = 8;
+const VM_SWAP_MIN_SIZE_GB: u32 = 1;
+const VM_SWAP_FREE_SPACE_RESERVE_GB: u32 = 1;
+
+/// Create and enable a swap file if not already active.
+async fn setup_vm_swap(machine: &KeepAliveMachine) -> Result<()> {
+    info!(
+        "[orion-deploy] Configuring up to {} GB swap at {}",
+        VM_SWAP_TARGET_SIZE_GB, VM_SWAP_FILE
+    );
+    let cmd = format!(
+        r#"set -e
+swap_active=0
+if swapon --show --noheadings 2>/dev/null | grep -q '{swap_file}'; then
+  echo 'swap already active'
+  swap_active=1
+elif [ -f '{swap_file}' ]; then
+  swapon '{swap_file}'
+  swap_active=1
+else
+  target_kb=$(( {target_gb} * 1024 * 1024 ))
+  min_kb=$(( {min_gb} * 1024 * 1024 ))
+  reserve_kb=$(( {reserve_gb} * 1024 * 1024 ))
+  avail_kb=$(df -Pk "$(dirname '{swap_file}')" | awk 'NR == 2 {{ print $4 }}')
+  if [ -z "$avail_kb" ]; then
+    echo 'unable to determine available disk space for swap' >&2
+    exit 1
+  fi
+  usable_kb=$(( avail_kb - reserve_kb ))
+  if [ "$usable_kb" -lt "$min_kb" ]; then
+    echo "skipping swap: only ${{avail_kb}} KiB available, reserving ${{reserve_kb}} KiB"
+  else
+    if [ "$usable_kb" -gt "$target_kb" ]; then
+      swap_kb="$target_kb"
+    else
+      swap_kb="$usable_kb"
+    fi
+    echo "creating ${{swap_kb}} KiB swap file"
+    fallocate -l "${{swap_kb}}K" '{swap_file}' 2>/dev/null \
+      || dd if=/dev/zero of='{swap_file}' bs=1024 count="$swap_kb" status=none
+    chmod 600 '{swap_file}'
+    mkswap '{swap_file}'
+    swapon '{swap_file}'
+    swap_active=1
+  fi
+fi
+if [ "$swap_active" -eq 1 ]; then
+  grep -qF '{swap_file}' /etc/fstab 2>/dev/null \
+    || echo '{swap_file} none swap sw 0 0' >> /etc/fstab
+fi
+swapon --show
+free -h | head -2
+"#,
+        swap_file = VM_SWAP_FILE,
+        target_gb = VM_SWAP_TARGET_SIZE_GB,
+        min_gb = VM_SWAP_MIN_SIZE_GB,
+        reserve_gb = VM_SWAP_FREE_SPACE_RESERVE_GB,
+    );
+    let output = machine.exec(&cmd).await?;
+    info!(
+        "[orion-deploy] Swap setup output:\n{}",
+        String::from_utf8_lossy(&output.stdout).trim()
+    );
+    if !output.status.success() {
+        anyhow::bail!(
+            "swap setup failed: {}",
+            String::from_utf8_lossy(&output.stderr).trim()
+        );
+    }
+    Ok(())
+}
+
 /// Upload a single file to the VM via SFTP
 async fn upload_file(
     machine: &KeepAliveMachine,
@@ -143,6 +217,8 @@ pub async fn deploy_orion_in_vm(
 pub async fn start_orion_in_vm(machine: &KeepAliveMachine) -> Result<String> {
     info!("[orion-deploy] Starting Orion service");
 
+    setup_vm_swap(machine).await?;
+
     // Step 1: Create Scorpio directories
     info!("[orion-deploy] Creating Scorpio directories");
     machine.exec("mkdir -p /data/scorpio/store").await?;

orion/Cargo.toml

@@ -37,4 +37,4 @@ serial_test = { workspace = true }
 tempfile = { workspace = true }
 
 [target.'cfg(target_os = "linux")'.dependencies]
-scorpiofs = { git = "https://github.com/web3infra-foundation/scorpiofs.git" }
+scorpiofs = { git = "https://github.com/web3infra-foundation/scorpiofs.git", branch = "codex/antares-fuse-local-libfuse" }