android故障与Log的对应

卸载sdcard卡失败对应的log:

04-27 03:00:01.523 E/Vold    ( 1404): Giving up on unmount /mnt/secure/staging (Device or resource busy)

04-27 03:00:01.523 E/Vold    ( 1404): Failed to unmount /mnt/secure/staging (Device or resource busy)

04-27 03:00:01.523 D/Vold    ( 1404): Volume sdcard state changing 5 (Unmounting) -> 4 (Mounted)

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