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Date: Wed, 24 Oct 2012 08:48:35 +0800
From: Wang Sheng-Hui <shhuiw@gmail.com>
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To: Alex Lyakas <alex@zadarastorage.com>
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Subject: Re: Questions about mkfs -A option
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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