How much of a mess does OpenVZ make? ;) Was: What can OpenVZ do?

Alexey Dobriyan adobriyan at
Fri Mar 13 17:20:59 PDT 2009

On Fri, Mar 13, 2009 at 02:01:50PM -0700, Linus Torvalds wrote:
> On Fri, 13 Mar 2009, Alexey Dobriyan wrote:
> > > 
> > > Let's face it, we're not going to _ever_ checkpoint any kind of general 
> > > case process. Just TCP makes that fundamentally impossible in the general 
> > > case, and there are lots and lots of other cases too (just something as 
> > > totally _trivial_ as all the files in the filesystem that don't get rolled 
> > > back).
> > 
> > What do you mean here? Unlinked files?
> Or modified files, or anything else. "External state" is a pretty damn 
> wide net. It's not just TCP sequence numbers and another machine.

I think (I think) you're seriously underestimating what's doable with
kernel C/R and what's already done.

I was told (haven't seen it myself) that Oracle installations and
Counter Strike servers were moved between boxes just fine.

They were run in specially prepared environment of course, but still.

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