volume: use mountpoint command to check if it is mounted

src/volumes.js

@@ -159,6 +159,14 @@ async function update(volume, mountType, mountOptions) {
 async function getStatus(volume) {
     assert.strictEqual(typeof volume, 'object');
 
+    if (volume.mountType === 'noop') {
+        if (safe.child_process.execSync(`mountpoint -q -- ${volume.hostPath}`, { encoding: 'utf8' })) {
+            return { state: 'active', message: 'Mounted' };
+        } else {
+            return { state: 'inactive', message: 'Not mounted' };
+        }
+    }
+
     let output = safe.child_process.execSync(`systemctl show --value -p ActiveState $(systemd-escape -p --suffix=mount ${volume.hostPath})`, { encoding: 'utf8' });
     let state = output ? output.trim() : '';
     let message;
@@ -167,8 +175,9 @@ async function getStatus(volume) {
         output = safe.child_process.execSync(`journalctl -u $(systemd-escape -p --suffix=mount ${volume.hostPath}) -n 10 --no-pager -o cat`, { encoding: 'utf8' });
 
         if (output) {
-            const idx = output.split('\n').reverse().findIndex(l => l.includes('process exited'));
-            if (idx > 0) message = output[idx-1]; // the line before probably has the error
+            const lines = output.split('\n').reverse();
+            const idx = lines.findIndex(l => l.includes('process exited'));
+            if (idx > 0) message = lines[idx-1]; // the line before probably has the error
         }
         if (!message) message = `Could not determine failure reason: ${safe.error.message}`;
     } else {