1、由于数据没备份，有没什么方法可以找回数据进行备份2、看了日志，有可能存储空间不足导致系统更新失败，有没有办法解决 错误代码 unable to set attributes on directory for update events: Error Domain=NSCocoaErrorDomain Code=640 "(null)" UserInfo={NSFilePath=/mnt4/db/UpdateMetrics/Events, NSUnderlyingError=0x155d36100 {Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device"}} : unable to set attributes on directory for update events: Error Domain=NSCocoaErrorDomain Code=640 "(null)" UserInfo={NSFilePath=/mnt2/db/UpdateMetrics/Events, NSUnderlyingError=0x155d39040 {Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device"}} : -_block_invoke: Previously submitted events will NOT BE resubmitted UMEventShimSubmitEvents done error unmounting '/mnt4': No space left on device ramrod_dump_mounted_filesystem_info:**********DUMPING MOUNTED FILESYSTEMS******** ramrod_dump_mounted_filesystem_info: 7 filesystems are mounted /dev/disk0s1s5 is mounted at /mnt4 /dev/disk0s1s2 is mounted at /mnt2 /dev/disk0s1s3 is mounted at /mnt7 /dev/disk0s1s1 is mounted at /mnt1 tmpfs is mounted at /mnt5 devfs is mounted at /dev /dev/md0 is mounted at / ramrod_dump_mounted_filesystem_info: *********DONE DUMPING MOUNTED FILESYSTEMS******** : failed to unmount update partition. 28: No space left on device {3>7} CHECKPOINT END: RESTORED: submit_update_stats ==== end of device restore output ==== AMRAuthInstallDeletePersonalizedBundle <Restore Device 0x600003558a50>: Restore failed (result = 28) Can't send dump_console command since device is not in recovery mode AMRestorePerformRestoreModeRestoreWithError failed with error: 28 Finished RestoreOS Restore Phase: Failed State Machine Dump, status:ERROR - -> Changing state from 'Restoring' to 'Error' State is now set to error: AMRestorePerformRestoreModeRestoreWithError failed with error: 28 Restore completed, status:28 Restore Checkpoint Fingerprint: 061D.001C Failure Description: Depth:0 Code:-1 Error:AMRestorePerformRestoreModeRestoreWithError failed with error: 28 Depth:1 Code:28 Error:Failed to handle message type StatusMsg (Timeout waiting for NAND) Depth:2 Code:28 Error:failed to unmount filesystems