linux-kernel - Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch

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Message-ID: <4CD71DB4.7050608@cs.columbia.edu>
Date:	Sun, 07 Nov 2010 16:44:20 -0500
From:	Oren Laadan <orenl@...columbia.edu>
To:	Gene Cooperman <gene@....neu.edu>
CC:	Matt Helsley <matthltc@...ibm.com>, Tejun Heo <tj@...nel.org>,
	Kapil Arya <kapil@....neu.edu>,
	ksummit-2010-discuss@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, hch@....de,
	Linux Containers <containers@...ts.osdl.org>
Subject: Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch

[cc'ing linux containers mailing list]

On 11/06/2010 04:40 PM, Gene Cooperman wrote:

> 8.  What happens if the DMTCP coordinator ( checkpoint control process) dies?
>    [ The same thing that happens if a user process dies.  We kill the whole
>      computation, and restart.  At restart, we use a new coordinator.
>      Coordinators are stateless. ]

My experience is different:

I downloaded dmtcp and followed the quick-start guide:
(1) "dmtcp_coordinator" on one terminal
(2) "dmtcp_checkpoint bash" on another terminal

Then I:
(3) pkill -9 dmtcp_coordinator
... oops - 'bash' died.

I didn't even try to take a checkpoint :(

Oren.
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