[one-users] cancel live migration in progress

[Javier Fontan]

Hello,

Just to shed some light on the process of live migration there's this
simplified document for KVM (the other hypervisors do basically the
same):

http://www.linux-kvm.org/page/Migration#Algorithm_.28the_short_version.29

As Samuel says we could have a timeout for live migration but giving
sensible defaults without knowing what the VMs are doing or the
bandwidth available is a bit risky

Anyway, 2 days migrating looks a bit strange to me.

Bye

On Thu, Oct 20, 2011 at 12:23 PM, Steffen Neumann <sneumann at ipb-halle.de> wrote:
> Hi,
>
> On Thu, 2011-10-20 at 10:48 +0200, samuel wrote:
>> After almost 2 days, the migration has succeed:
>
> I didn't read the beginning of the thread,
> but just wanted to share my observation:
>
> I also had a VM that didn't live-migrate immediately.
> This was a 4 VCPU VM running 4 compute (and memory) intensive processes,
> and I got impatient after even just 10 minutes.
>
> Apparently, the migration had a tough time sync'ing
> the permanently changing memory to the new node.
>
> Once I had ssh'ed in, I used kill -STOP to pause these processes.
> Then I saw the blinking cursor freeze for a fraction of a second,
> and could resume the processes via kill -CONT again.
>
> Yours,
> Steffen
>
> --
> IPB Halle                    AG Massenspektrometrie & Bioinformatik
> Dr. Steffen Neumann          http://www.IPB-Halle.DE
> Weinberg 3                   http://msbi.bic-gh.de
> 06120 Halle                  Tel. +49 (0) 345 5582 - 1470
>                                  +49 (0) 345 5582 - 0
> sneumann(at)IPB-Halle.DE     Fax. +49 (0) 345 5582 - 1409
>
>
>



-- 
Javier Fontán Muiños
Project Engineer
OpenNebula Toolkit | opennebula.org