Hi Nausca,
I wanted to setup a VM here with 2.6.9 kernel. Can you point me to the
distro that you are using so that I can download the ISOs and install it
for testing?
Thanks,
Kapil
On Thu, Jun 21, 2012 at 10:27 PM, Nausca <[email protected]> wrote:
> Hi,
> I am afraid I don't have the authority to provide the external guest
> access.
> especially, the machine is at Cadence's R&D farm.
> 2.6.9 is a common kernel to our customer.
> If the migration between 2.6.9 and the upper version is supported,
> we will upgrade our MTCP version to the latest.
>
> By the way, I will keep testing the migration between different
> kernel version with the latest DMTCP version.
> and tell you my experiment result.
>
> thanks for your quickly response.
>
> thanks.
> nausca.
>
>
>
> ----- Original Message -----
> From: "Gene Cooperman" <[email protected]>
> To: "Nausca Hsu" <[email protected]>
> Cc: "Gene Cooperman" <[email protected]>; <
> [email protected]>
> Sent: Friday, June 22, 2012 4:34 AM
> Subject: Re: testmtcp program fail to restart at linux 2.6.9 when
> checkpoint
> at 2.6.18
>
>
> Hi Nausca,
> As a long-term goal, we would like to support more robust migration
> of processes from one Linux kernel to another. Your target Linux
> (Linux 2.6.9) is among the earliest kernels that DMTCP supports.
> Migration between 2.6.18 and newer kernels will probably be easier.
> Having said that, I'd be happy to diagnose more closely what are
> the issues in going from 2.6.18 to 2.6.9. Now during the summer is a
> good time for us to try these things. If it turns out to be
> a smaller issue, we could probably fix it on the spot.
> We used to have a local 2.6.9 kernel machine, but it's not
> available right now. Is it easy for you to provide a guest account
> on your own machine with a 2.6.9 kernel? If not, and you'd still like
> us to look more closely at this, let us know, and we'll try for a
> virtual machine.
>
> Best,
> - Gene
>
> On Thu, Jun 21, 2012 at 02:36:31PM +0800, Nausca wrote:
> > Hi,
> > I have download the latest 1.2.5 version. In mtcp directory,
> > I try to checkpoint the process "testmtcp"
> > at a machine:
> > linux ccslinux25 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010
> x86_64
> > x86_64 x86_64 GNU/Linux
> >
> > The testmtcp.mtcp checkpoint file can be restarted successfully.
> > When I try to restart it at the machine:
> > Linux ccslinux27 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64
> > x86_64 x86_64 GNU/Linux
> >
> > I have a coredump:
> > [0] mtcp_restart.c:257 main:
> > failed to unmap region at 0x2B67A028A000
> > Segmentation fault (core dumped)
> >
> > Such checkpoint/restart usage on different Linux kernel will be supported
> > in the future?
> >
> > thanks.
> > nausca.
> >
>
>
>
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