linux-ext4 - Re: Need of revoke mechanism in JBD

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Message-ID: <BANLkTimaR0n-YmtBe6xWKCkOc+PoBNa72w@mail.gmail.com>
Date:	Mon, 2 May 2011 13:42:48 +0300
From:	Amir Goldstein <amir73il@...il.com>
To:	"Ted Ts'o" <tytso@....edu>
Cc:	Ding Dinghua <dingdinghua85@...il.com>,
	Yongqiang Yang <xiaoqiangnk@...il.com>,
	Niraj Kulkarni <kulkarniniraj14@...il.com>,
	linux-ext4@...r.kernel.org
Subject: Re: Need of revoke mechanism in JBD

On Mon, May 2, 2011 at 1:28 AM, Ted Ts'o <tytso@....edu> wrote:
> On Fri, Apr 29, 2011 at 10:45:23PM +0300, Amir Goldstein wrote:
>>
>> Actually, the original paper has no mention of revoke records.
>> I went out to look for useful documentation on journal forget/revoke
>> and came back empty handed as well.
>
> Stephen Tweedie gave a talk back in 2000 which covered revoke records.
> There's a transcript of his talk here:
>
> http://olstrans.sourceforge.net/release/OLS2000-ext3/OLS2000-ext3.html
>
> The link to the audio file of the talk is dead, but I managed to find
> a copy of the mp3 file on Google.  To make sure it doesn't get lost
> I've made a copy of it.  The original and the copy can be found at:
>
> http://ftp.gnumonks.org/pub/congress-talks/ols2000/high/cd1/2000-07-20_15-05-22_A_64.mp3
> ftp://ftp.kernel.org/pub/linux/kernel/people/tytso/presentations/2000-07-20_15-05-22_A_64.mp3
>
>                                                - Ted
>

Thanks for that! It was an interesting read, a little piece of history for me.

Clearly, at the time of this talk, revoke code was still on the design table
and committed_data is not mentioned, so either it was not introduced yet
or just wasn't in the scope of the talk.

Amir.
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