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From: Wang Sheng-Hui <shhuiw@gmail.com>
To: Alex Lyakas <alex@zadarastorage.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: Questions about mkfs -A option
Date: Wed, 24 Oct 2012 08:48:35 +0800	[thread overview]
Message-ID: <50873AE3.4020700@gmail.com> (raw)
In-Reply-To: <CAOcd+r1aPGGh4zHYzeMMuE01j4Nr+aiMmHBCAWqqCXvZZTb2XQ@mail.gmail.com>

On 2012年10月23日 01:49, Alex Lyakas wrote:

> Wang,
> I would say that zeroing is done to prevent from seeing some other superblock (besides btrfs) there.


That make sense.

> 
> Alex.
> 
> 


But I still confused by the -A option?

In mkfs, we always write the sb info into BTRFS_SUPER_INFO_OFFSET.
>From the -A comment, I think btrfs would be places after the -A value.
What would happen if we specify a -A value larger than it?


Thanks,
Sheng-Hui

  parent reply	other threads:[~2012-10-24  1:19 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-17  7:02 Questions about mkfs -A option Wang Sheng-Hui
     [not found] ` <CAOcd+r1aPGGh4zHYzeMMuE01j4Nr+aiMmHBCAWqqCXvZZTb2XQ@mail.gmail.com>
2012-10-24  0:48   ` Wang Sheng-Hui [this message]
2012-10-24  9:44     ` Alex Lyakas
2012-10-25  3:01       ` Wang Sheng-Hui

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