Re: [Users] Ovzkernel-xen

[Nick]

works for me (2.6.32 from git), with bridged network

On Tue, Dec 14, 2010 at 12:25:04AM +0100, mattias wrote:
> Has anyone get this kernel to work
> I meen the kernel in the openvz repo
> I can boot it but my network dosen't work
> Or it work but  I can't pign the server
> And yes the firewall are stoped
> I run with bridged network but this should not do any diffrense

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[Users] Ovzkernel-xen

[mattias]

Has anyone get this kernel to work
I meen the kernel in the openvz repo
I can boot it but my network dosen't work
Or it work but  I can't pign the server
And yes the firewall are stoped
I run with bridged network but this should not do any diffrense

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[Users] ovzkernel-xen in official rhel5 repo?

[Aleksandar Ivanisevic]

Is there a reason why ovzkernel-xen package is not in the metadata in
the official openvz repo?

I see the package there and direct install works, but yum install
ovzkernel-xen doesn't.

Am I missing something?


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Re: [Users] ovzkernel-xen ?

[Robert Nelson]

Gregor Mosheh wrote:

Robert Nelson wrote:
So I have a Xen PV OpenVZ DomU that hosts a container for each Linux 
Distro and Version I need to build.


So why the complexity of the hybrid setup, rather than a separate DomU 
for each OS and distro? I have my reasons for loving OpenVZ, and am 
curious about reasons for your situation.



One word - Resources.

OpenVZ containers require far less disk and memory.  They are also much 
easier to setup.


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Re: [Users] ovzkernel-xen ?

[Gregor Mosheh]

Robert Nelson wrote:
So I have a Xen PV OpenVZ DomU that hosts a container for each Linux 
Distro and Version I need to build.


So why the complexity of the hybrid setup, rather than a separate DomU 
for each OS and distro? I have my reasons for loving OpenVZ, and am 
curious about reasons for your situation.


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System Administrator, Lead Programmer
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Re: [Users] ovzkernel-xen ?

[Robert Nelson]

Gregor Mosheh wrote:
Having not used Xen but being very interested in all forms of 
virtualization and how folks are using it, I'm curious.


What does one do with a kernel that does both OpenVZ and Xen? Do you 
run multiple Doms and a few of them use OpenVZ? Is there a reason that 
neither OpenVZ nor Xen do exactly what you want by themselves?



I use Xen + OpenVZ on a build machine.

I need to build binaries of an Open Source software package I maintain.

So I have a Xen PV OpenVZ DomU that hosts a container for each Linux 
Distro and Version I need to build.


For those non-Linux OSes like Windows, FreeBSD and Solaris I use either 
Fully or Para Virtual Xen DomUs to do the build.


Then when I'm doing a release I run a script on my development machine.

The script starts the various virtual environments, copies over the 
source tar, builds it, copies back the binaries and stops the virtual 
environment.


In about a half hour I end up with about 40 OS and Version specific 
RPMs, DEBS, etc.


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Re: AW: [Users] ovzkernel-xen ?

[Gregor Mosheh]

Dietmar Maurer wrote:

On Proxmox VE (pve.proxmox.com), we combine KVM and openvz. That way
we are able to run fully virtualized guests (i.e. windows) and openvz
CTs.


Oh, that is just killer. And you have that phat GUI and a bare-metal 
installer? That is SO neat. I'll want to hit you up off-list, or on the 
Proxmox mailing list, to find out more about the nesting model and 
interoperability etc. Way cool.


--
Gregor Mosheh / Greg Allensworth, BS, A+
System Administrator
HostGIS cartographic development & hosting services
http://www.HostGIS.com/

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AW: [Users] ovzkernel-xen ?

[Dietmar Maurer]

> > Having not used Xen but being very interested in all forms of 
> > virtualization and how folks are using it, I'm curious.
> > 
> > What does one do with a kernel that does both OpenVZ and 
> Xen? Do you 
> > run multiple Doms and a few of them use OpenVZ? Is there a 
> reason that 
> > neither OpenVZ nor Xen do exactly what you want by themselves?
> 
> Yes, there is a fundamental difference in how the two systems 
> work, RTFM :) For example with Xen each child gets a whole 
> new kernel instance with everything that that entails, most 
> obvious example being separate memory.

On Proxmox VE (pve.proxmox.com), we combine KVM and openvz. That way
we are able to run fully virtualized guests (i.e. windows) and openvz
CTs.

- Dietmar


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Re: [Users] ovzkernel-xen ?

[Peter Machell]

On 23/08/2008, at 9:48 AM, Gregor Mosheh wrote:

I'm dying to know the real-life scenario underlying this, why you  
don't hand someone either a Xen or a OpenVZ, but a Xen so they can  
create their own OpenVZs. Do you have multiple IT departments, for  
example, working on different products, and you want them to self- 
administer the creation of VEs? Do you have some 128-CPU cluster  
running Xen and you sell Xen Doms so they can resell OpenVZ VEs?


We do all our hosting on either OpenVZ or Xen.

One of my physical servers may be a big beasty divided into a number  
of Xen guests. One of these may be a Linux VM running many OpenVZ  
children. The OpenVZ host doesn't care that it is itself a virtual  
machine.


The advantages of virtualisation can be applied to more than one  
level, if you have the resources, and the use cases could be many and  
varied.


regards,
Peter.


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Re: [Users] ovzkernel-xen ?

[Gregor Mosheh]

Josip Rodin wrote:

On Fri, Aug 22, 2008 at 04:22:01PM -0600, Gregor Mosheh wrote:
My question is why you'd want to use both. What particular need or 
deployment scenario would require Xen and OpenVZ together?



Well, that's... a bit unimaginative :|


I'm trying to get an idea of what creative needs and solutions are being 
handled with nested virtualization, not trawling for insults. But thanks 
anyway. :)




Here's a quick example: you have one
big machine but more than one group of users


Interesting. So you hand out a Xen instance, expecting the owner of the 
DomU to create OpenVZ instances within it? That's kinda clever, I guess, 
if there's some practical use for it.


I'm dying to know the real-life scenario underlying this, why you don't 
hand someone either a Xen or a OpenVZ, but a Xen so they can create 
their own OpenVZs. Do you have multiple IT departments, for example, 
working on different products, and you want them to self-administer the 
creation of VEs? Do you have some 128-CPU cluster running Xen and you 
sell Xen Doms so they can resell OpenVZ VEs?


--
Gregor Mosheh / Greg Allensworth, BS, A+
System Administrator
HostGIS cartographic development & hosting services
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"Remember that no one cares if you can back up,
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Re: [Users] ovzkernel-xen ?

[Josip Rodin]

On Fri, Aug 22, 2008 at 04:22:01PM -0600, Gregor Mosheh wrote:
> My question is why you'd want to use both. What particular need or 
> deployment scenario would require Xen and OpenVZ together?

Well, that's... a bit unimaginative :| Here's a quick example: you have one
big machine but more than one group of users. You really want to keep the
users separate, yet don't really care what they do once they're on their
own. So you give each group a Xen child, under which they run as many OpenVZ
children as they like.

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Re: [Users] ovzkernel-xen ?

[Gregor Mosheh]

Josip Rodin wrote:

Yes, there is a fundamental difference in how the two systems work, RTFM :)


Why, thank you. And here I thought they were the same thing. :P

My question is why you'd want to use both. What particular need or 
deployment scenario would require Xen and OpenVZ together?


--
Gregor Mosheh / Greg Allensworth, BS, A+
System Administrator
HostGIS cartographic development & hosting services
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Re: [Users] ovzkernel-xen ?

[Josip Rodin]

On Fri, Aug 22, 2008 at 08:47:56AM -0600, Gregor Mosheh wrote:
> Having not used Xen but being very interested in all forms of 
> virtualization and how folks are using it, I'm curious.
> 
> What does one do with a kernel that does both OpenVZ and Xen? Do you run 
> multiple Doms and a few of them use OpenVZ? Is there a reason that 
> neither OpenVZ nor Xen do exactly what you want by themselves?

Yes, there is a fundamental difference in how the two systems work, RTFM :)
For example with Xen each child gets a whole new kernel instance with
everything that that entails, most obvious example being separate memory.

-- 
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Re: [Users] ovzkernel-xen for rhel5?

[Henrik Holmboe]

Kir Kolyshkin <[EMAIL PROTECTED]> writes:

(...)

>We are already working on releasing a newer version, with lots of
>updates from RHEL plus some from us.
>
>Please understand that a new kernel release is much more than just
>compile/upload/announce. Our kernels are going through an extensive
>internal QA before the release, and as always QA resources are limited
>so we can not afford two kernels in a queue.

Thanks for your input on this.

h.

-- 
Henrik Holmboe, Stockholm, Sweden

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Re: [Users] ovzkernel-xen for rhel5?

[Kir Kolyshkin]

Henrik Holmboe wrote:

Kir Kolyshkin <[EMAIL PROTECTED]> writes:

  

Xen compilation was broken in the last kernel, so it went out without
-xen-. It is now fixed and xen kernels will be available with the next
kernel release. If you want it earlier (for whatever reason), we can
provide an unofficial build.



Maybe I understand you wrong, but if the problem is fixed (with
specifically 2.6.18-92.1.1.EL5 + OpenVZ)
The kernel which is shipped as 028stab057.2 can not be compiled with 
Xen. There is a patch fixing the issue, but adding the patch would mean 
yet another different kernel (say 028stab057.3) which should go through 
full release cycle (see below).


Neither we can release a "just xen" kernel, because our releasing 
machinery and infrastructure is just not suitable for that sort of things.

 then couldn't this be made an
offical build?
  
We are already working on releasing a newer version, with lots of 
updates from RHEL plus some from us.


Please understand that a new kernel release is much more than just 
compile/upload/announce. Our kernels are going through an extensive 
internal QA before the release, and as always QA resources are limited 
so we can not afford two kernels in a queue.

I was just about to install a Xen enabled kernel on a recently
installed machine and it would be nice to have the most kernel based
on the most recent RHEL kernel. Otherwise, for me it would mean
installing an old one or waiting for the next one.
I am really sorry, but it looks like this is what you have to do for a 
moment. Our new kernel is in QA and hopefully will be released next week.


As I said before, we could provide an unofficial build for those users 
suffering from the old kernel bugs. Having said that, it's still some 
work to do so requests for such a kernel needs to be justified. I mean, 
saying "my kernel is old and I want a new shiny one" doesn't count.

 Compiling my own is
not an option for now.

Thanks for your time!

Henrik

  


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Re: [Users] ovzkernel-xen for rhel5?

[Henrik Holmboe]

Kir Kolyshkin <[EMAIL PROTECTED]> writes:

>Xen compilation was broken in the last kernel, so it went out without
>-xen-. It is now fixed and xen kernels will be available with the next
>kernel release. If you want it earlier (for whatever reason), we can
>provide an unofficial build.

Maybe I understand you wrong, but if the problem is fixed (with
specifically 2.6.18-92.1.1.EL5 + OpenVZ) then couldn't this be made an
offical build?

I was just about to install a Xen enabled kernel on a recently
installed machine and it would be nice to have the most kernel based
on the most recent RHEL kernel. Otherwise, for me it would mean
installing an old one or waiting for the next one. Compiling my own is
not an option for now.

Thanks for your time!

Henrik

-- 
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Re: [Users] ovzkernel-xen ?

[Gregor Mosheh]

Having not used Xen but being very interested in all forms of 
virtualization and how folks are using it, I'm curious.


What does one do with a kernel that does both OpenVZ and Xen? Do you run 
multiple Doms and a few of them use OpenVZ? Is there a reason that 
neither OpenVZ nor Xen do exactly what you want by themselves?


--
Gregor Mosheh / Greg Allensworth, BS, A+
System Administrator
HostGIS cartographic development & hosting services
http://www.HostGIS.com/

"Remember that no one cares if you can back up,
 only if you can restore." - AMANDA
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Re: [Users] ovzkernel-xen for rhel5?

[Kir Kolyshkin]

Aleksandar Ivanisevic wrote:

Hi,

Whats the status of ovzkernel-xen for rhel5? I see in the repo that it
was last built for 028stab053.10 which was in April.

Are there any issues with it or is it just that noone is recompiling
regularly?
  
Xen compilation was broken in the last kernel, so it went out without 
-xen-. It is now fixed and xen kernels will be available with the next 
kernel release. If you want it earlier (for whatever reason), we can 
provide an unofficial build.

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[Users] ovzkernel-xen for rhel5?

[Aleksandar Ivanisevic]

Hi,

Whats the status of ovzkernel-xen for rhel5? I see in the repo that it
was last built for 028stab053.10 which was in April.

Are there any issues with it or is it just that noone is recompiling
regularly?


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