lkml.org 
[lkml]   [2005]   [Dec]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [ckrm-tech] Re: [RFC][patch 00/21] PID Virtualization: Overview and Patches
From
Date
On Thu, 2005-12-15 at 19:28 -0800, Gerrit Huizenga wrote:
> In the pid virtualization, I would think that tasks can move between
> containers as well,

I don't think tasks can not be permitted to move between containers. As
a simple exercise, imagine that you have two processes with the same
pid, one in container A and one in container B. You wish to have them
both run in container A. They can't both have the same pid. What do
you do?

I've been talking a lot lately about how important filesystem isolation
between containers is to implement containers properly. Isolating the
filesystem namespaces makes it much easier to do things like fs-based
shared memory during a checkpoint/resume. If we want to allow tasks to
move around, we'll have to throw out this entire concept. That means
that a _lot_ of things get a notch closer to the too-costly-to-implement
category.

-- Dave

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-12-16 18:38    [W:0.090 / U:0.156 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site