| Re: [Announce] Checkpoint-restore tool v0.1 [message #47333 is a reply to message #47332] |
Tue, 31 July 2012 08:57   |
richard -rw- weinberg
Messages: 5
Registered: July 2012
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Junior Member |
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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-)
--
Thanks,
//richard
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