linux-kernel - [RFC] Rollback FS

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Date:	Sun, 20 Oct 2013 15:06:33 +0800
From:	jiaweiwei <jiaweiwei.xiyou@...il.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:	Harry Wei <harryxiyou@...il.com>
Subject: [RFC] Rollback FS

Hi all,

Recently, I just do some stupid stuffs as follows.

# mv /lib/x86_64-linux-gnu/libc.so.6  /tmp

After move "/lib/x86_64-linux-gnu/libc.so.6" away, you could not run lots
of commands, which show you some errors like this.

# ls
ls: error while loading shared libraries: libc.so.6: cannot open
shared object file: No such file or directory
# mv
mv: error while loading shared libraries: libc.so.6: cannot open
shared object file: No such file or directory
...

Because they all depend on libc.so.

You could also happen to above boring stuffs when you remove some key
files in Linux OS. Now, I have a good idea to solve above problems.

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.
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