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Date: Tue, 31 Jul 2012 13:07:31 +0400
From: Pavel Emelyanov <xemul@parallels.com>
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To: richard -rw- weinberger <richard.weinberger@gmail.com>
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Subject: Re: [Announce] Checkpoint-restore tool v0.1
References: <500D09C9.7060903@parallels.com> <500D1116.7070301@parallels.com> <CAFLxGvwUhEPNdQvUnue2QFu_EipmBKD3nf0MfMWkqwLTf7jd5Q@mail.gmail.com> <50179CF0.7050200@parallels.com> <CAFLxGvygCxER3gHfj-onwnm_m6xugOVkynGyJU2CDheD3A2HOQ@mail.gmail.com>
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On 07/31/2012 12:57 PM, richard -rw- weinberger wrote:
> On Tue, Jul 31, 2012 at 10:53 AM, Pavel Emelyanov <xemul@parallels.com> wrote:
>> On 07/30/2012 02:42 PM, richard -rw- weinberger wrote:
>>> On Mon, Jul 23, 2012 at 10:53 AM, Pavel Emelyanov <xemul@parallels.com> wrote:
>>>> This project is an attempt to implement the checkpoint-restore functionality
>>>> for processes and containers without driving too much code into the kernel tree,
>>>> but putting there "various oddball helper code" instead.
>>>
>>> Is CRIU able to checkpoint a process tree where one or more processes
>>> are traced using ptrace()?
>>
>> No it's not (currently).
>>
>>> crtools seem to use ptrace() to execute parasite system calls.
>>> AFAIK this will only work if the target process is currently not
>>> ptraced() by another process.
>>>
>>
>> Yup, exactly.
> 
> Dammit, I hoped we can get suspend/resume for UserModeLinux for free
> with CRIU. 8-)

Sorry :( However, if you can help with patches on that issue that would be
highly appreciated :)

Thanks,
Pavel