Store workspace volumes in Gevulot data directory

crates/node/src/nanos/volume.rs

@@ -1,4 +1,7 @@
-use std::{path::PathBuf, process::Command};
+use std::{
+    path::{Path, PathBuf},
+    process::Command,
+};
 
 use eyre::Result;
 use thiserror::Error;
@@ -13,8 +16,9 @@ pub enum NanosVolumeError {
     ParseError(String),
 }
 
-pub fn create(label: &str, size: &str) -> Result<PathBuf> {
+pub fn create(data_dir: &Path, label: &str, size: &str) -> Result<PathBuf> {
     let output = Command::new("ops")
+        .env("HOME", data_dir)
         .arg("volume")
         .arg("create")
         .arg(label)

crates/node/src/vmm/qemu.rs

@@ -155,8 +155,12 @@ impl Provider for Qemu {
             .to_lowercase();
 
         // XXX: This isn't async and will call out to `ops` for now.
-        let workspace_file = nanos::volume::create(&workspace_volume_label, "2g")?.into_os_string();
+        tracing::debug!("creating workspace volume for the VM");
+        let workspace_file =
+            nanos::volume::create(&self.config.data_directory, &workspace_volume_label, "2g")?
+                .into_os_string();
         let workspace_file = workspace_file.to_str().expect("workspace volume path");
+        tracing::debug!("workspace volume created");
 
         let cpus = req.cpus;
         let mem_req = req.mem;