Re: [sami] First SAMI email in the new year, can we go further? Look forward to your opinions.

Melinda Shore <melinda.shore@gmail.com> Thu, 01 March 2012 16:24 UTC

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Date: Thu, 01 Mar 2012 07:24:42 -0900
From: Melinda Shore <melinda.shore@gmail.com>
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Cc: "Yingjie Gu(yingjie)" <guyingjie@huawei.com>, "sami@ietf.org" <sami@ietf.org>
Subject: Re: [sami] First SAMI email in the new year, can we go further? Look forward to your opinions.
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On 3/1/12 7:13 AM, Thomas Narten wrote:
> That does mean that an active VM in one place is migrated "live" (with
> a short downtime of sub seconds) to another place.
> This is not a case where the VM shuts down and new one is instantiated
> (i.e., started from scratch) elsewhere.
> Isn't this what VM migration means?

I think so, and there's no doubt it would be helpful to be clearer about
that going forward.  However, my understanding that while the VM image
would be moved (craploads of kernel state - file tables, page tables,
all that crap), network activity would have to be quiesced first.  It
sounds to me like it's got much in common with old school supercomputer
checkpoint/restart.  For whatever it's worth we have to do something
similar with some mid-range "application availability" (you'll notice
the absence of the word "high") gizmos, and something along the lines of
a middlebox state migration tool would seem to have some applicability
there, too.

Melinda

[sami] First SAMI email in the new year, can we g… Yingjie Gu(yingjie)
Re: [sami] First SAMI email in the new year, can … Thomas Narten
Re: [sami] First SAMI email in the new year, can … Melinda Shore
Re: [sami] First SAMI email in the new year, can … Thomas Narten
Re: [sami] First SAMI email in the new year, can … Melinda Shore
Re: [sami] First SAMI email in the new year, can … Thomas Narten
Re: [sami] First SAMI email in the new year, can … david.black
Re: [sami] First SAMI email in the new year, can … Juergen Schoenwaelder
Re: [sami] First SAMI email in the new year, can … zhangyunfei
Re: [sami] First SAMI email in the new year, can … Benson Schliesser
[sami] 答复: First SAMI email in the new year, can … Dacheng Zhang(Dacheng)
[sami] 答复: First SAMI email in the new year, can … Dacheng Zhang(Dacheng)
Re: [sami] First SAMI email in the new year, can … david.black
Re: [sami] First SAMI email in the new year, can … Melinda Shore
Re: [sami] 答复: First SAMI email in the new year, … Juergen Schoenwaelder
[sami] 答复: Re: First SAMI email in the new year, … Yingjie Gu(yingjie)