linux-kernel - Re: [RFC] Rollback FS

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Message-ID: <20131020102203.GB77546@vega.codepro.be>
Date:	Sun, 20 Oct 2013 12:22:03 +0200
From:	Kristof Provost <kristof@...segv.be>
To:	jiaweiwei <jiaweiwei.xiyou@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Harry Wei <harryxiyou@...il.com>
Subject: Re: [RFC] Rollback FS

On 2013-10-20 15:06:33 (+0800), jiaweiwei <jiaweiwei.xiyou@...il.com> wrote:
> We could implement a File System to record all the operations which
> send to VFS. Then when you think you have done a mistake command, you
> could rollback from this File System.
> 
> This is just a RFC, I would give detail implementations. Would anyone
> please give me some suggestions? Thanks very much.

I think it needs to be fleshed out a lot more.

For example, how would you tell it to roll back without a functional
libc? How does it differ from the snapshot feature in btrfs?

Regards,
Kristof
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