linux-ext4 - [Bug 103111] auto_da_alloc mount option not working

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Message-ID: <bug-103111-13602-g0pgTJP6ce@https.bugzilla.kernel.org/>
Date:	Thu, 20 Aug 2015 05:53:20 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 103111] auto_da_alloc mount option not working

https://bugzilla.kernel.org/show_bug.cgi?id=103111

--- Comment #3 from Rakesh <patelrakeshcomp@...il.com> ---
Same behaviour on kernel 3.14.27 also.

Power cut for 15sec, 20sec and 25sec. All 3times, files is having zero length.

For above code file "example.txt1" is empty.

If I remove rename command(system(mv example.txt example.txt1)) then also
example.txt is blank.

  ofstream myfile;

  myfile.open ("example.txt",std::ofstream::trunc);

  myfile << "Writing this to a file.\n";

Looks like rename via trunc call is not wroking.

Uploaded sample file.

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