linux-kernel - Re: checkpoint/restart ABI

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Message-ID: <20080811175415.x7st9tf2ssg8og40@cubmail.cc.columbia.edu>
Date:	Mon, 11 Aug 2008 17:54:15 -0400
From:	Oren Laadan <orenl@...columbia.edu>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	containers@...ts.linux-foundation.org,
	Theodore Tso <tytso@....edu>, linux-kernel@...r.kernel.org
Subject: Re: checkpoint/restart ABI

Quoting Dave Hansen <dave@...ux.vnet.ibm.com>:

> Arnd, Jeremy and Oren,
>
> Thanks for all of the very interesting comments about the ABI.

I second that !

>
> Considering that we're still *really* early in getting this concept
> merged up into mainline, what do you all think we should do now?
>
> My main goal here is just to get everyone to understand the approach
> that we're proposing rather than to really fix the interfaces in stone.
> I bet we're going to be changing them a lot before these patches
> actually get in.

I closely follow the valuable feedback and fix the code accordingly.

I propose to extend the proof of concept, to also be able to save and
restore "simple" open files (regular files, directories). My motivation
is twofold:

(1) Providing eough functionality for people to meaningfully play
with the proposed patches and try them.

(2) Demonstrate how I propose to handle shared resources (open files).

The first point is very important because it makes the concept actually
useful to a much broader set of programs than otherwise. I hope this
will attract a larger audience :)

To this end, I have already extended the patchset, and I should be
able to send something working in a day or two.

Oren.

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