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Date: Thu, 5 Jun 2014 04:25:50 +0400
From: Solar Designer <solar@...nwall.com>
To: owl-users@...ts.openwall.com
Subject: Re: Owl and Xen

On Wed, Jun 04, 2014 at 05:03:48PM -0300, J. Cesar Bertelli wrote:
> The last question was 'Does Owl's kernel include xen drivers?'

No, it does not.

> ... And the right URL for templates is ftp://ftp.fr.openwall.com/pub/Owl/current/vztemplate/

... and OpenVZ templates do not include the kernel.  They also don't
include some userland packages that are not needed in containers - e.g.,
there's no bootloader.  In Owl/build/installorder.conf, the package
names to exclude from OpenVZ templates are prefixed with "H:", which
stands for "host-only".

$ fgrep H: installorder.conf
H:acct
H:dmidecode
H:ethtool
H:hdparm
H:pciutils
H:usbutils
H:usb_modeswitch H:usb_modeswitch-data
H:modutils
H:mdadm
H:lilo
H:syslinux H:syslinux-extlinux
H:silo
H:prtconf
H:losetup
H:bridge-utils
H:vconfig
H:smartmontools
H:vzquota
H:vzctl

So if you want to run Owl with its own kernel, starting with an OpenVZ
template is not a good idea.  These templates are to be used with shared
kernels.

> On 06/04/2014 at 4:48 PM, "J. Cesar Bertelli" <jcb@...h.ai> wrote:
> >Does anyone know something important about Owl paravirtualized to
> >work under Xen?

For full virtualization, you just install into a VM and it should work -
obviously, it does under KVM.

For paravirtualization, you need to use a suitable kernel build.  IIRC,
galaxy@ uses Owl on Amazon AWS, but I don't recall whether that is with
one of their standard kernels or with a rebuilt Owl kernel.

Alexander

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