Re: [Devel] Re: [RFC v2][PATCH 4/9] Memory management - dump state

[Andrey Mirkin <major@openvz.org>]

On Wednesday 03 September 2008 16:15 Cedric Le Goater wrote:
> Andrey Mirkin wrote:
> > On Sunday 31 August 2008 21:34 Cedric Le Goater wrote:
> >> Oren Laadan wrote:
> >>> Dave, Serge:
> >>>
> >>> I'm currently away so I must keep this short. I think we have so far
> >>> more discussion than an actual problem. I'm happy to coordinate with
> >>> every interested party to eventually see this work go into main stream.
> >>
> >> thanks. We do need a moderator and federator.
> >>
> >>> My only concerns are twofold: first, to get more feedback I believe we
> >>> need to get the code a bit more usable; including FDs is an excellent
> >>> way to actually do that. That will add significant value to the patch.
> >>
> >> hmm, yes and no.
> >>
> >> fd's are a must have but I would be more interested to see an external
> >> checkpoint/restart and signal support first. why ? because it would be
> >> already usable for most computational programs in HPC, like this stupid
> >> one :
> >>
> >> 	https://www.ccs.uky.edu/~bmadhu/pi/pi1.c
> >>
> >> signals are required because it's how 'load' and/or 'system' managers
> >> interact with the jobs they spawn. external checkpoint/restart for the
> >> same reason.
> >
> > I'm sorry for being out of discussion for so long time.
> > I've just sent a patchset with external checkpoint/restart as it is
> > implemented in OpenVZ.
> > External checkpoint/restart also is very usefull if we will have
> > container's infrastructure in mainstream.
> > It won't be very hard to add support for signals in my patchset. I'll
> > wait for some time for comments and will add support for signals in next
> > version.
>
> OK.
>
> Then, we should be able to have a simple C/R framework (user and kernel) if
> we integrate your patchset or Oren's with Daniel's user tools :
>
> 	http://lxc.cvs.sourceforge.net/lxc/
>
> I was just starting to work on Oren's patchset when you sent yours :)

I will take a look on Daniel's user tools.

Thanks,
Andrey