From: Wang Sheng-Hui <shhuiw@gmail.com>
To: linux-btrfs@vger.kernel.org
Subject: Questions about mkfs -A option
Date: Wed, 17 Oct 2012 15:02:14 +0800 [thread overview]
Message-ID: <507E57F6.6000805@gmail.com> (raw)
Hi,
I'm reading the mkfs code, and confused by its -A option.
>From its comments, the value specified by -A should be regarded as
the start of the filesystem. But mkfs will always zero some area
at the beginning of the first dev, regardless -r specified or not.
My question is:
Why mkfs zeros the beginning of the first dev? Is that expected?
And any use case for -A option?
thanks,
next reply other threads:[~2012-10-17 7:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 7:02 Wang Sheng-Hui [this message]
[not found] ` <CAOcd+r1aPGGh4zHYzeMMuE01j4Nr+aiMmHBCAWqqCXvZZTb2XQ@mail.gmail.com>
2012-10-24 0:48 ` Questions about mkfs -A option Wang Sheng-Hui
2012-10-24 9:44 ` Alex Lyakas
2012-10-25 3:01 ` Wang Sheng-Hui
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