UBIFS power cut issues

[JiSheng Zhang]

Hi Artem,

2009/9/8 Artem Bityutskiy <dedekind1 at gmail.com>:
> Hi,
>
> sorry for late answer, was very busy.
>
> On Wed, 2009-09-02 at 17:35 +0800, JiSheng Zhang wrote:
>> If we cut power when copy file into ubifs, then remount ubifs and try
>> to read the file, we found that the data at some offset of the file
>> began different from the data of the original file at the same offset.
>> Is this a bug of ubifs?
>
> This is expected behavior on any asynchronous FS. You may switch to
> synchronous behavior with '-o sync' mount option. I wrote a lot of

I have tested with "mount -o sync", the result is the same. It's not
empty file. For example:
cp fileA /mnt/ubifs/fileB
random cut power before "cp" completed.
then remount