linux-kernel - Re: [Announce] Checkpoint-restore tool v0.1

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Message-ID: <5017AB41.60700@parallels.com>
Date:	Tue, 31 Jul 2012 13:54:09 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	richard -rw- weinberger <richard.weinberger@...il.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"lwn@....net" <lwn@....net>, "criu@...nvz.org" <criu@...nvz.org>,
	"users@...nvz.org" <users@...nvz.org>,
	Containers <containers@...ts.linux-foundation.org>,
	cgroups mailinglist <cgroups@...r.kernel.org>
Subject: Re: [Announce] Checkpoint-restore tool v0.1

On 07/31/2012 01:29 PM, richard -rw- weinberger wrote:
> On Tue, Jul 31, 2012 at 11:07 AM, Pavel Emelyanov <xemul@...allels.com> wrote:
>> Sorry :( However, if you can help with patches on that issue that would be
>> highly appreciated :)
>>
> 
> Yeah, but I fear it's not that easy.
> We'd have to change crtools to work without ptrace().

Well, this is hard. Using ptrace saved us from having many special-purpose
APIs for dumping various stuff (there will be an article about it). Thus I
don't know which way is simpler -- stop using ptrace or teach ptrece to allow
several tracers to attach to one task %)

Thanks,
Pavel

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