how to active XEN on Fedora 12

[Dario Lesca]

hi, I have 'yum install xen*' on fedora 12 64 bit and reboot.
But the service xen* not start, the folder /proc/xen is missing.

What should I do now?

How to start and Use XEN?

Many thanks


-- 
Dario Lesca <d.lesca(a)solinos.it&gt;

[Boris Derzhavets]

http://bderzhavets.wordpress.com/2009/11/22/setup-ubuntu-9-10-server-pv-d...



________________________________
From: Dario Lesca <d.lesca(a)solinos.it&gt;
To: Fedora Virt <fedora-virt(a)redhat.com&gt;
Sent: Tue, December 22, 2009 7:10:40 PM
Subject: [fedora-virt] how to active XEN on Fedora 12

hi, I have 'yum install xen*' on fedora 12 64 bit and reboot.
But the service xen* not start, the folder /proc/xen is missing.

What should I do now?

How to start and Use XEN?

Many thanks


-- 
Dario Lesca <d.lesca(a)solinos.it&gt;

_______________________________________________
Fedora-virt mailing list
Fedora-virt(a)redhat.com
https://www.redhat.com/mailman/listinfo/fedora-virt

[Dario Lesca]

Il giorno mar, 22/12/2009 alle 11.05 -0800, Boris Derzhavets ha scritto:
> http://bderzhavets.wordpress.com/2009/11/22/setup-ubuntu-9-10-server-pv-d...
>   
Thank Boris for reply, but I want only use "yum install something ...".

I'm not a guru of Linux, I don't want to do "rpmbuild ...;
configure ..., make something ...; ecc..", this is the past.

If for use XEN i must "make something ..." I will continue to use "rpm
-i VMware-server-2.0.2....." or another distro that will not need to
build something.

Then: It is possible use XEN in Fedora 12 without rebuild some things?

And, if yes, how to?

Thanks


________________________________________________________________________
>  From: Dario Lesca <d.lesca(a)solinos.it&gt;
>  To: Fedora Virt <fedora-virt(a)redhat.com&gt;
>  Sent: Tue, December 22, 2009 7:10:40 PM
>  Subject: [fedora-virt] how to active XEN on Fedora 12
>  
>  hi, I have 'yum install xen*' on fedora 12 64 bit and reboot.
>  But the service xen* not start, the folder /proc/xen is missing.
>  
>  What should I do now?
>  
>  How to start and Use XEN?
>  
>  Many thanks
>  
>  
>  -- 
>  Dario Lesca <d.lesca(a)solinos.it&gt;
>  
>  _______________________________________________
>  Fedora-virt mailing list
>  Fedora-virt(a)redhat.com
>  https://www.redhat.com/mailman/listinfo/fedora-virt
>  
>   
-- 
Dario Lesca <d.lesca(a)solinos.it&gt;

[Boris Derzhavets]

> Then: It is possible use XEN in Fedora 12 without rebuild some things?
1. I believe install xen-3.4.2-2.fc13.src.rpm and rebuilding F12 packages to
install up to date Xen 3.4.2 properly working with Libvirt 0.7.1-15
is the only right way to go. You would also have to build the most recent pvops
kernel via JF's Git Repo. 

If i am wrong about that, someone will correct me.

>  I will continue to use "rpm -i VMware-server-2.0.2....." or
> another distro 
>  that will not need to build something. 
2. You can use F12's KVM, but once again Libvirt will be required to manage VMs.
F12 is a bleeding edge system for development, high performance virtualization 
environment. You might not need it at all.
So,  VMware might be the best option for you.

Boris.





________________________________
From: Dario Lesca <d.lesca(a)solinos.it&gt;
To: Boris Derzhavets <bderzhavets(a)yahoo.com&gt;
Cc: Fedora Virt <fedora-virt(a)redhat.com>; Fedora Project List
<fedora-list(a)redhat.com&gt;
Sent: Wed, December 23, 2009 3:33:31 PM
Subject: Re: [fedora-virt] how to active XEN on Fedora 12

Il giorno mar, 22/12/2009 alle 11.05 -0800, Boris Derzhavets ha scritto:
> http://bderzhavets.wordpress.com/2009/11/22/setup-ubuntu-9-10-server-pv-d...
>   
Thank Boris for reply, but I want only use "yum install something ...".

I'm not a guru of Linux, I don't want to do "rpmbuild ...;
configure ..., make something ...; ecc..", this is the past.

If for use XEN i must "make something ..." I will continue to use "rpm
-i VMware-server-2.0.2....." or another distro that will not need to
build something.

Then: It is possible use XEN in Fedora 12 without rebuild some things?

And, if yes, how to?

Thanks


________________________________________________________________________
>  From: Dario Lesca <d.lesca(a)solinos.it&gt;
>  To: Fedora Virt <fedora-virt(a)redhat.com&gt;
>  Sent: Tue, December 22, 2009 7:10:40 PM
>  Subject: [fedora-virt] how to active XEN on Fedora 12
>  
>  hi, I have 'yum install xen*' on fedora 12 64 bit and reboot.
>  But the service xen* not start, the folder /proc/xen is missing.
>  
>  What should I do now?
>  
>  How to start and Use XEN?
>  
>  Many thanks
>  
>  
>  -- 
>  Dario Lesca <d.lesca(a)solinos.it&gt;
>  
>  _______________________________________________
>  Fedora-virt mailing list
>  Fedora-virt(a)redhat.com
>  https://www.redhat.com/mailman/listinfo/fedora-virt
>  
>   
-- 
Dario Lesca <d.lesca(a)solinos.it&gt;

[Dario Lesca]

Il giorno mer, 23/12/2009 alle 05.03 -0800, Boris Derzhavets ha scritto:
>  You can use F12's KVM, but once again Libvirt will be required
> to
>  manage VMs.
>  F12 is a bleeding edge system for development, high performance
>  virtualization 
>  environment. You might not need it at all.
>  So,  VMware might be the best option for you.  
Thanks Boris, I use F12 on my Laptop
and I want run some VM for test new
version of distro.

Now I use qemu-kvm but each machine use 30/40% of CPU of host system.

I want use XEN to see if it works better...

I have found this note:
http://www.cyberciti.biz/tips/rhel-centos-xen-virtualization-installation...

But if I run "yum install xen virt-manager kernel-xen" this is the
output:

>  % sudo LANG=C yum install xen virt-manager kernel-xen
>  Loaded plugins: fastestmirror, presto, refresh-packagekit
>  Loading mirror speeds from cached hostfile
>   * fedora: ftp.uni-bayreuth.de
>   * livna: ftp-stud.fht-esslingen.de
>   * rpmfusion-free: ftp.nb.lug.ro
>   * rpmfusion-free-updates: ftp.nb.lug.ro
>   * rpmfusion-nonfree: ftp.nb.lug.ro
>   * rpmfusion-nonfree-updates: ftp.nb.lug.ro
>   * updates: ftp.upjs.sk
>  Setting up Install Process
>  Package xen-3.4.1-5.fc12.x86_64 already installed and latest version
>  Package virt-manager-0.8.0-7.fc12.noarch already installed and latest version
>  Package kernel-2.6.31.6-166.fc12.x86_64 already installed and latest version
>  Nothing to do 
then I'm looking for some thing to do after this....

Thanks
 

-- 
Dario Lesca <d.lesca(a)solinos.it&gt;

[Richard W.M. Jones]

On Wed, Dec 23, 2009 at 02:23:37PM +0100, Dario Lesca wrote:
>  Thanks Boris, I use F12 on my Laptop and I want run some VM for test
> new
>  version of distro. 
KVM is generally better for laptops because of better power
management.  However ...

>  Now I use qemu-kvm but each machine use 30/40% of CPU of host system.
Is KVM enabled?

  $ /sbin/lsmod | grep kvm
  kvm_intel              48184  6 
  kvm                   163952  1 kvm_intel

You should see a kvm_* module.  Does your laptop support hardware
virtualization?  Recent hardware has much better support than the
first generation of hardware.  Is it enabled in the laptop BIOS?

>  I want use XEN to see if it works better... 
[...]
>  then I'm looking for some thing to do after this.... 
Basically Fedora 12 doesn't support Xen as a host.  Too bad, but this
is because upstream Xen people didn't get their changes into the Linux
kernel yet.

Your options are to go back to something out of date and unsupported
(Fedora 8 IIRC was the last version of Fedora that could be used as a
Xen host).  Or use KVM -- see above.  Or use RHEL 5 or a derivative
where an older version of Xen is fully supported.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

[Boris Derzhavets]

>  Basically Fedora 12 doesn't support Xen as a host.  Too bad, but
> this
>  is because upstream Xen people didn't get their changes into the Linux
>  kernel yet. 
Xen 4.0 official release (due to end of 01/2010) would have JF's 2.6.3(X).(Y) pvops
enabled kernel
as default kernel for Xen Dom0 support. So changes are done at least for Citrix.  
I believe APIC rework will significantly change Xen Hypervisor itself .
RH's position is waiting for Xen Dom0 support to merge mainline linux.
Expectation like 2.6.33 seems to be very optimistic ( per link provided by you )
Fedora's guys made more then whoever else for Xen Support on F12
1. Xen 3.4.2 Hypervisor may be installed via xen-3.4.2-2.fc13.src.rpm.
2. Libvirt 0.7.1-15 works fine with mentioned version of Xen ( virt-install,virt-manager)
  This feature makes F12 much more attractive target for kernel port vs Ubuntu or Debian.
  The most serious competition is xVM 3.4.2 based on OpenSolaris 2010-02 ( Libvirt 0.7.0)

3. JF's pvops kernel 2.6.31.6  may be checked out and built on any Linux and on F12 in
particular.


Boris.



________________________________
From: Richard W.M. Jones <rjones(a)redhat.com&gt;
To: Dario Lesca <d.lesca(a)solinos.it&gt;
Cc: Boris Derzhavets <bderzhavets(a)yahoo.com>; Fedora Virt
<fedora-virt(a)redhat.com>; Fedora Project List <fedora-list(a)redhat.com&gt;
Sent: Wed, December 30, 2009 3:21:56 PM
Subject: Re: [fedora-virt] how to active XEN on Fedora 12

On Wed, Dec 23, 2009 at 02:23:37PM +0100, Dario Lesca wrote:
>  Thanks Boris, I use F12 on my Laptop and I want run some VM for test
> new
>  version of distro. 
KVM is generally better for laptops because of better power
management.  However ...

>  Now I use qemu-kvm but each machine use 30/40% of CPU of host system.
Is KVM enabled?

  $ /sbin/lsmod | grep kvm
  kvm_intel              48184  6 
  kvm                   163952  1 kvm_intel

You should see a kvm_* module.  Does your laptop support hardware
virtualization?  Recent hardware has much better support than the
first generation of hardware.  Is it enabled in the laptop BIOS?

>  I want use XEN to see if it works better... 
[...]
>  then I'm looking for some thing to do after this.... 
Basically Fedora 12 doesn't support Xen as a host.  Too bad, but this
is because upstream Xen people didn't get their changes into the Linux
kernel yet.

Your options are to go back to something out of date and unsupported
(Fedora 8 IIRC was the last version of Fedora that could be used as a
Xen host).  Or use KVM -- see above.  Or use RHEL 5 or a derivative
where an older version of Xen is fully supported.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

[Pasi Kärkkäinen]

On Wed, Dec 30, 2009 at 12:21:56PM +0000, Richard W.M. Jones wrote:
>  On Wed, Dec 23, 2009 at 02:23:37PM +0100, Dario Lesca wrote:
>  > Thanks Boris, I use F12 on my Laptop and I want run some VM for test new
>  > version of distro.
>  
>  KVM is generally better for laptops because of better power
>  management.  However ...
>  
>  > Now I use qemu-kvm but each machine use 30/40% of CPU of host system.
>  
>  Is KVM enabled?
>  
>    $ /sbin/lsmod | grep kvm
>    kvm_intel              48184  6 
>    kvm                   163952  1 kvm_intel
>  
>  You should see a kvm_* module.  Does your laptop support hardware
>  virtualization?  Recent hardware has much better support than the
>  first generation of hardware.  Is it enabled in the laptop BIOS?
>  
>  > I want use XEN to see if it works better...
>  [...]
>  > then I'm looking for some thing to do after this....
>  
>  Basically Fedora 12 doesn't support Xen as a host.  Too bad, but this
>  is because upstream Xen people didn't get their changes into the Linux
>  kernel yet.
>  
>  Your options are to go back to something out of date and unsupported
>  (Fedora 8 IIRC was the last version of Fedora that could be used as a
>  Xen host).  Or use KVM -- see above.  Or use RHEL 5 or a derivative
>  where an older version of Xen is fully supported.
>   
Fedora 12 contains Xen hypervisor and tools, only dom0 kernel is
missing. 

There's a repository of xendom0 kernels as rpms, if you're willing to
install 3rdparty/testing rpms, see:

http://fedoraproject.org/wiki/Features/XenPvopsDom0

-- Pasi

[Dario Lesca]

Il giorno mer, 30/12/2009 alle 12.21 +0000, Richard W.M. Jones ha
scritto:
>  
>  Is KVM enabled?
>  
>    $ /sbin/lsmod | grep kvm
>    kvm_intel              48184  6 
>    kvm                   163952  1 kvm_intel
>  
>  You should see a kvm_* module.  Does your laptop support hardware
>  virtualization?  Recent hardware has much better support than the
>  first generation of hardware.  Is it enabled in the laptop BIOS? 
Thanks Richard, this is the problem: My laptop not have KVM support!
It's my new laptop (HP Pavillon dv5) and I have discover now witch it
non have KVM support in the bios.

Now I'm looking for a buyer to sell and change it for use KVM.

Thanks

-- 
Dario Lesca <d.lesca(a)solinos.it&gt;

[Ján ONDREJ (SAL)]

On Mon, Jan 04, 2010 at 10:52:01PM +0100, Dario Lesca wrote:
>  Il giorno mer, 30/12/2009 alle 12.21 +0000, Richard W.M. Jones ha
>  scritto:
>  > 
>  > Is KVM enabled?
>  > 
>  >   $ /sbin/lsmod | grep kvm
>  >   kvm_intel              48184  6 
>  >   kvm                   163952  1 kvm_intel
>  > 
>  > You should see a kvm_* module.  Does your laptop support hardware
>  > virtualization?  Recent hardware has much better support than the
>  > first generation of hardware.  Is it enabled in the laptop BIOS?
>  
>  Thanks Richard, this is the problem: My laptop not have KVM support!
>  It's my new laptop (HP Pavillon dv5) and I have discover now witch it
>  non have KVM support in the bios.
>  
>  Now I'm looking for a buyer to sell and change it for use KVM. 
It's not neccessary to have switch in bios. Some laptops (like my one) has
nothing about virtualization in BIOS, but KVM works well with full speed.
You should check for virtualization flags for your CPU. More info here:

http://fedoraproject.org/wiki/Virtualization_Quick_Start#
Additional_requirements_for_fully_virtualized_guests

                        SAL

PS: Why I can't simply reply (or group reply) to this mail?
    Mailinglist is not included in To or Cc when replying.

[M A Young]

On Wed, 23 Dec 2009, Dario Lesca wrote:

>  Il giorno mar, 22/12/2009 alle 11.05 -0800, Boris Derzhavets ha
> scritto:
> >
> http://bderzhavets.wordpress.com/2009/11/22/setup-ubuntu-9-10-server-pv-d...
> >
>  Thank Boris for reply, but I want only use "yum install something ...".
>
>  I'm not a guru of Linux, I don't want to do "rpmbuild ...;
>  configure ..., make something ...; ecc..", this is the past.
>
>  If for use XEN i must "make something ..." I will continue to use "rpm
>  -i VMware-server-2.0.2....." or another distro that will not need to
>  build something.
>
>  Then: It is possible use XEN in Fedora 12 without rebuild some things? 
If you are using xen on Fedora see 
http://fedoraproject.org/wiki/Features/XenPvopsDom0
In particular there are some pre-built kernels at 
http://fedorapeople.org/~myoung/dom0/

You do need to edit your boot loader configuration to use the kernels 
under xen, you want something along the lines of

title fedora xen (version)
 	root (hd0,0)
 	kernel /boot/xen.gz
 	module /boot/vmlinuz.version standard_kernel_options
 	module /boot/initrd.version.img

Basically it should probably match your existing entries except for the 
additional xen line and kernel/initrd becoming module in the other lines.

 	Michael Young

[Richard W.M. Jones]

On Tue, Dec 22, 2009 at 05:10:40PM +0100, Dario Lesca wrote:
>  hi, I have 'yum install xen*' on fedora 12 64 bit and
> reboot.
>  But the service xen* not start, the folder /proc/xen is missing.
>  
>  What should I do now?
>  
>  How to start and Use XEN? 
https://fedoraproject.org/wiki/Docs/Beats/Virtualization#Xen_Kernel_Support

Alternatively, try building your kernel with Xen from upstream
sources:

http://www.xen.org/products/xen_source.html

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines.  Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://et.redhat.com/~rjones/virt-top

[Boris Derzhavets]

>   Alternatively, try building your kernel with Xen from upstream
> sources. 
       I would forward this statement  to Jeremy Fitzhardinge ;)

In fact, i  believe xenified or pvops kernel is required to support Dom0 .
1. Pvops 2.6.31.6 kernel may be built via Jeremy's  Git Repo or attempt to install
prebuilt 
  rpms by Michael Young ( they never worked for me)

Checkout and build pvops kernel:-

# git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
# cd linux-2.6-xen
# make menuconfig ( setup Xen Dom0 support)
# make -j(x)(number_of_kernels)
# make modules_install install

2. OpenSuse rebased patches (Andy Lyon) work pretty good with 2.6.31.8 
and  allow to build xenified aka Suse kernel. It's coming from Jan Beulich.
View:-
http://article.gmane.org/gmane.comp.emulators.xen.user/52982

But, in both cases clear understanding of actions in "make menuconfig" (
different for pvops kernel
and xenified kernel ) is a must.



Boris.


________________________________
From: Richard W.M. Jones <rjones(a)redhat.com&gt;
To: Dario Lesca <d.lesca(a)solinos.it&gt;
Cc: Fedora Virt <fedora-virt(a)redhat.com&gt;
Sent: Tue, December 29, 2009 4:15:26 PM
Subject: Re: [fedora-virt] how to active XEN on Fedora 12

On Tue, Dec 22, 2009 at 05:10:40PM +0100, Dario Lesca wrote:
>  hi, I have 'yum install xen*' on fedora 12 64 bit and
> reboot.
>  But the service xen* not start, the folder /proc/xen is missing.
>  
>  What should I do now?
>  
>  How to start and Use XEN? 
https://fedoraproject.org/wiki/Docs/Beats/Virtualization#Xen_Kernel_Support

Alternatively, try building your kernel with Xen from upstream
sources

http://www.xen.org/products/xen_source.html

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines.  Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://et.redhat.com/~rjones/virt-top

_______________________________________________
Fedora-virt mailing list
Fedora-virt(a)redhat.com
https://www.redhat.com/mailman/listinfo/fedora-virt

[Pasi Kärkkäinen]

On Tue, Dec 29, 2009 at 01:15:26PM +0000, Richard W.M. Jones wrote:
>  On Tue, Dec 22, 2009 at 05:10:40PM +0100, Dario Lesca wrote:
>  > hi, I have 'yum install xen*' on fedora 12 64 bit and reboot.
>  > But the service xen* not start, the folder /proc/xen is missing.
>  > 
>  > What should I do now?
>  > 
>  > How to start and Use XEN?
>  
>  https://fedoraproject.org/wiki/Docs/Beats/Virtualization#Xen_Kernel_Support
>  
>  Alternatively, try building your kernel with Xen from upstream
>  sources:
>  
>  http://www.xen.org/products/xen_source.html
>   
And:
http://wiki.xensource.com/xenwiki/XenDom0Kernels

-- Pasi