From fe9fdec3ca8e217f11117d0bf135757f8db1d34b Mon Sep 17 00:00:00 2001
From: rawswar <112966837+rawswar@users.noreply.github.com>
Date: Wed, 1 Oct 2025 09:17:02 +0800
Subject: [PATCH] Update BackupManager.ts

Add fsync to prevent backup file corruption (#10476)
---
 src/main/services/BackupManager.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/main/services/BackupManager.ts b/src/main/services/BackupManager.ts
index c6d3ee1841..8ee3644467 100644
--- a/src/main/services/BackupManager.ts
+++ b/src/main/services/BackupManager.ts
@@ -340,6 +340,21 @@ class BackupManager {
       await fs.remove(this.tempDir)
       onProgress({ stage: 'completed', progress: 100, total: 100 })
 
+      // 强制将文件系统缓存同步到磁盘，防止因竞争条件导致文件损坏。
+      try {
+        const fileDescriptor = await fs.open(backupedFilePath, 'r')
+        await fs.fsync(fileDescriptor)
+        await fs.close(fileDescriptor)
+        logger.debug(`[BackupManager] Backup file synced to disk successfully: ${backupedFilePath}`)
+      } catch (syncError) {
+        logger.error(
+          '[BackupManager] Failed to explicitly sync backup file to disk. Falling back to a brief delay.',
+          syncError as Error
+        )
+        await new Promise((res) => setTimeout(res, 500))
+      }
+
+
       logger.debug('Backup completed successfully')
       return backupedFilePath
     } catch (error) {