From: Pavel Emelyanov <xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
To: richard -rw- weinberger
<richard.weinberger-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: "users-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org"
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Subject: Re: [Announce] Checkpoint-restore tool v0.1
Date: Tue, 31 Jul 2012 12:53:04 +0400 [thread overview]
Message-ID: <50179CF0.7050200@parallels.com> (raw)
In-Reply-To: <CAFLxGvwUhEPNdQvUnue2QFu_EipmBKD3nf0MfMWkqwLTf7jd5Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 07/30/2012 02:42 PM, richard -rw- weinberger wrote:
> On Mon, Jul 23, 2012 at 10:53 AM, Pavel Emelyanov <xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org> 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.
Thanks,
Pavel
WARNING: multiple messages have this Message-ID (diff)
From: Pavel Emelyanov <xemul@parallels.com>
To: richard -rw- weinberger <richard.weinberger@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"lwn@lwn.net" <lwn@lwn.net>, "criu@openvz.org" <criu@openvz.org>,
"users@openvz.org" <users@openvz.org>,
Containers <containers@lists.linux-foundation.org>,
cgroups mailinglist <cgroups@vger.kernel.org>
Subject: Re: [Announce] Checkpoint-restore tool v0.1
Date: Tue, 31 Jul 2012 12:53:04 +0400 [thread overview]
Message-ID: <50179CF0.7050200@parallels.com> (raw)
In-Reply-To: <CAFLxGvwUhEPNdQvUnue2QFu_EipmBKD3nf0MfMWkqwLTf7jd5Q@mail.gmail.com>
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.
Thanks,
Pavel
next prev parent reply other threads:[~2012-07-31 8:53 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-23 8:22 [Announce] Checkpoint-restore tool v0.1 Pavel Emelyanov
[not found] ` <500D09C9.7060903-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-07-23 8:53 ` Pavel Emelyanov
2012-07-23 8:53 ` Pavel Emelyanov
[not found] ` <500D1116.7070301-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-07-23 13:14 ` Serge Hallyn
2012-07-23 13:14 ` Serge Hallyn
2012-07-23 13:14 ` Serge Hallyn
2012-07-30 10:42 ` richard -rw- weinberger
2012-07-30 10:42 ` richard -rw- weinberger
2012-07-30 10:42 ` richard -rw- weinberger
[not found] ` <CAFLxGvwUhEPNdQvUnue2QFu_EipmBKD3nf0MfMWkqwLTf7jd5Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-31 8:53 ` Pavel Emelyanov [this message]
2012-07-31 8:53 ` Pavel Emelyanov
[not found] ` <50179CF0.7050200-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-07-31 8:57 ` richard -rw- weinberger
2012-07-31 8:57 ` richard -rw- weinberger
[not found] ` <CAFLxGvygCxER3gHfj-onwnm_m6xugOVkynGyJU2CDheD3A2HOQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-31 9:00 ` Cyrill Gorcunov
2012-07-31 9:00 ` Cyrill Gorcunov
2012-07-31 9:00 ` Cyrill Gorcunov
2012-07-31 9:07 ` Pavel Emelyanov
2012-07-31 9:07 ` Pavel Emelyanov
[not found] ` <5017A053.9000206-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-07-31 9:29 ` richard -rw- weinberger
2012-07-31 9:29 ` richard -rw- weinberger
2012-07-31 9:29 ` richard -rw- weinberger
[not found] ` <CAFLxGvy396+BfYSaSnvAwJb0GO4WZCKbPXSbU7YfrOJTo6zk6A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-31 9:54 ` Pavel Emelyanov
2012-07-31 9:54 ` Pavel Emelyanov
[not found] ` <5017AB41.60700-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-07-31 10:08 ` richard -rw- weinberger
2012-07-31 10:08 ` richard -rw- weinberger
[not found] ` <CAFLxGvwu8-ii7hDbDfco3JrgKgOK+hsdTN_Q--AHbom0Ni8WYA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-31 10:16 ` Cyrill Gorcunov
2012-07-31 10:16 ` Cyrill Gorcunov
2012-07-31 10:21 ` richard -rw- weinberger
2012-07-31 10:21 ` richard -rw- weinberger
2012-07-31 10:21 ` richard -rw- weinberger
[not found] ` <CAFLxGvxgq9HJJvRgz=z48D7V_j=dTv4jSCLqEZcE=oCBAXnSug-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-31 10:30 ` Cyrill Gorcunov
2012-07-31 10:30 ` Cyrill Gorcunov
2012-07-31 10:16 ` Cyrill Gorcunov
2012-09-20 10:16 ` [Announce] Checkpoint-restore tool v0.2 Pavel Emelyanov
2012-09-20 10:16 ` Pavel Emelyanov
[not found] ` <505AECF0.6070607-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-09-20 13:05 ` Serge Hallyn
2012-09-20 13:05 ` Serge Hallyn
2012-09-20 13:05 ` Serge Hallyn
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