安卓自动备份 : Transport rejected package

Question

我正在尝试测试 Android auto backup .我在 7.1 设备上，应用程序 list 包含:android:fullBackupOnly="true" .当我发出 adb shell bmgr backupnow <package>命令(对于 SO 帖子，我用占位符替换了我的包名称)，我得到了看起来像失败的东西:

Running backup for 1 requested packages.
Package @pm@ with result: Success
Package <package> with result: Transport rejected package
Backup finished with result: Success

如果我将 list 更改为 android:fullBackupOnly="false" (即使用旧的 K/V 备份)然后重新发出 backupnow命令我得到看起来像成功的东西:

Running backup for 1 requested packages.
Package @pm@ with result: Success
Package <package> with result: Success
Backup finished with result: Success

在拒绝案例中查看 Logcat，我看到以下内容:

11-10 09:27:59.660 1683-1683/? D/AndroidRuntime: Calling main entry com.android.commands.bmgr.Bmgr
11-10 09:27:59.669 1035-2498/? V/PerformBackupTask: Beginning backup of 0 targets
11-10 09:27:59.677 1035-2498/? D/PerformBackupTask: invokeAgentForBackup on @pm@
11-10 09:27:59.685 1035-2498/? I/BackupRestoreController: Getting widget state for user: 0
11-10 09:27:59.691 1035-2498/? D/PerformBackupTask: Starting full backups for: [<package>]
11-10 09:27:59.692 1035-2498/? I/BackupManagerService: K/V backup pass finished.
11-10 09:27:59.693 1035-1699/? I/PFTBT: Initiating full-data transport backup of <package>
11-10 09:27:59.695 12554-12566/? I/Backup: [GmsBackupTransport] Attempt to do full backup on <package>
11-10 09:27:59.697 1035-1699/? I/PFTBT: Transport rejected backup of <package>, skipping
11-10 09:27:59.697 1035-1699/? I/PFTBT: Unbinding agent in <package>
11-10 09:27:59.697 1035-1699/? W/ActivityManager: Unbinding backup agent with no active backup
11-10 09:27:59.697 1035-1699/? I/PFTBT: Full backup completed with status: 0
11-10 09:27:59.697 1035-1699/? I/BackupManagerService: Full data backup pass finished.

这些是相关的行:

11-10 09:27:59.695 12554-12566/? I/Backup: [GmsBackupTransport] Attempt to do full backup on <package>
11-10 09:27:59.697 1035-1699/? I/PFTBT: Transport rejected backup of <package>, skipping

为什么完整/自动备份失败？

这是来自成功 (K/V) 案例的完整 Logcat:

11-10 09:31:21.750 2200-2200/? D/AndroidRuntime: Calling main entry com.android.commands.bmgr.Bmgr
11-10 09:31:21.762 1035-2498/? V/PerformBackupTask: Beginning backup of 1 targets
11-10 09:31:21.768 1035-2498/? D/PerformBackupTask: invokeAgentForBackup on @pm@
11-10 09:31:21.775 1035-2498/? I/BackupRestoreController: Getting widget state for user: 0
11-10 09:31:21.780 1035-2498/? D/PerformBackupTask: starting key/value backup of BackupRequest{pkg= <package>}
11-10 09:31:21.783 1035-2498/? D/BackupManagerService: awaiting agent for ApplicationInfo{b68136a  <package>}
11-10 09:31:21.793 1035-1815/? D/BackupManagerService: agentConnected pkg= <package> agent=android.os.BinderProxy@6750684
11-10 09:31:21.793 1035-2498/? I/BackupManagerService: got agent android.app.IBackupAgent$Stub$Proxy@5e82e6d
11-10 09:31:21.793 1035-2498/? D/PerformBackupTask: invokeAgentForBackup on  <package>
11-10 09:31:21.796 1908-1920/ <package> D/BackupAgent: onBackup
11-10 09:31:21.796 1908-1920/ <package> D/BackupHelperDispatcher: handling existing helper 'data'  <package>.io.DbBackupHelper@35d5ebe
11-10 09:31:21.798 1908-1920/ <package> D/BackupHelperDispatcher: handling existing helper 'prefs' android.app.backup.SharedPreferencesBackupHelper@6936b1f
11-10 09:31:21.800 1035-2498/? I/BackupRestoreController: Getting widget state for user: 0
11-10 09:31:21.805 2200-2200/? D/AndroidRuntime: Shutting down VM
11-10 09:31:21.807 1035-2498/? I/BackupManagerService: K/V backup pass finished.

Answer 1

文档位于 https://developer.android.com/guide/topics/data/testingbackup.html说如下:

Exceeded Quota

If you see the the following messages in logcat:

I/PFTBT: Transport rejected backup of PACKAGE, skipping

--- or ---

I/PFTBT: Transport quota exceeded for package: PACKAGE

Your app has exceeded the quota and has been banned from backing up data on this device. To lift the ban, either factory reset your device or change the backup account.