From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Emelyanov Subject: Re: [Announce] Checkpoint-restore tool v0.1 Date: Tue, 31 Jul 2012 13:07:31 +0400 Message-ID: <5017A053.9000206@parallels.com> References: <500D09C9.7060903@parallels.com> <500D1116.7070301@parallels.com> <50179CF0.7050200@parallels.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: richard -rw- weinberger Cc: "users-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org" , Containers , Linux Kernel Mailing List , "criu-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org" , "lwn-T1hC0tSOHrs@public.gmane.org" , cgroups mailinglist On 07/31/2012 12:57 PM, richard -rw- weinberger wrote: > On Tue, Jul 31, 2012 at 10:53 AM, Pavel Emelyanov wrote: >> On 07/30/2012 02:42 PM, richard -rw- weinberger wrote: >>> On Mon, Jul 23, 2012 at 10:53 AM, Pavel Emelyanov 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