linux-ext4 - Re: mkfs.ext4 -D option fails to mount

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Message-ID: <20170629234816.werual2uikyhc56k@thunk.org>
Date:   Thu, 29 Jun 2017 19:48:16 -0400
From:   Theodore Ts'o <tytso@....edu>
To:     Ross Zwisler <ross.zwisler@...ux.intel.com>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: mkfs.ext4 -D option fails to mount

I'm not able to reproduce it using your reproduction receipe using
e2fsprogs 1.43.4.  I suspect you might be hitting a bug which was
fixed by this commit:

commit d6cad379eb6c86ca58bf5b83a586577de412a2e6
Author: Theodore Ts'o <tytso@....edu>
Date:   Sun Sep 11 00:25:48 2016 -0400

    libext2fs: fix unaligned, multiblock writes in the unix_io handler
    
    The read-modify-write code for the unaligned fallback code wasn't
    working for multi-block writes.  This was unmasked by FreeBSD 11-rc2,
    since its malloc() is returning unaligned memory regions for large
    memory regions.
    
    Signed-off-by: Theodore Ts'o <tytso@....edu>

Can you retry with e2fsprogs 1.43.4 and see if it fixes your issue?

						- Ted