Re: XEN 4.0.1 + pv_ops Kernel + CentOS 5.5 x86_64, is there an easier way.

["Michael A. Collins" <mike@ark-net.org>]

 On Sun, 12 Dec 2010 15:59:49 -0500, David Gonzalez Herrera 
 <dgonzalezh@gmail.com> wrote:
> Why thank you for the quick reply :)
>
> I've already tried all that, however not used the init=/sbin/upstart.
> It boots using the myoung pre-built RPM xend doesn't start, In fact I
> wanted to paste some of the output I get
>
> [root@vmhost ~]# uname -r
> 2.6.32.26-174.xendom0.fc12.x86_64
>
> grub.conf part
>
> title Fedora (2.6.32.26-174.xendom0.fc12.x86_64)
>  root (hd0,0)
> kernel /xen.gz loglvl=all guest_loglvl=all noreboot lapic=debug
> iommu=off
> kernel /vmlinuz-2.6.32.26-174.xendom0.fc12.x86_64 ro
> root=/dev/mapper/gw-root init=/sbin/upstart nomodeset selinux=0
> rd_LVM_LV=gw/root rd_LVM_LV=gw/swap rd_NO_LUKS rd_NO_MD rd_NO_DM
> LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=es rhgb
> initrd /initramfs-2.6.32.26-174.xendom0.fc12.x86_64.img
>

 Your grub line is wrong, it should be module after the first kernel.  
 I'm sure that replacing the second instance of kernel with module in 
 your grub.conf will get you a little further.
> The xen build howto also stated to use the "/proc/xen" mount on
> /etc/fstab, I have that but boot compains about the mountpoint not
> existing.
>
> mount: mount point /proc/xen does not exist
>
> and finally:
>
> [root@vmhost ~]# xend
> ERROR Internal error: Could not obtain handle on privileged command
> interface (2 = No such file or directory)
> Traceback (most recent call last):
>   File "/usr/sbin/xend", line 16, in
>     from xen.xend.server import SrvDaemon
>   File
> "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDaemon.py",
> line 26, in
>     import relocate
>   File
> "/usr/lib64/python2.7/site-packages/xen/xend/server/relocate.py", 
> line
> 28, in
>     from xen.xend import XendDomain
>   File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py",
> line 36, in
>     from xen.xend import XendOptions, XendCheckpoint,
> XendDomainInfo
>   File
> "/usr/lib64/python2.7/site-packages/xen/xend/XendCheckpoint.py", line
> 20, in
>     from xen.xend import balloon, sxp, image
>   File "/usr/lib64/python2.7/site-packages/xen/xend/image.py", line
> 46, in
>     xc = xen.lowlevel.xc.xc()
> xen.lowlevel.xc.Error: (1, 'Internal error', 'Could not obtain handle
> on privileged command interface (2 = No such file or directory)')
>
> Weird 'cause that error only showed up when you don't have a xenified
> kernel loaded but my uname says the countrary, so I'm lost.
>
> I'm compiling the kernel with the instructions/.config file found on
> your link, I'll try to boot it and will tell you the outcome.
>
> Any ideas on what to do?
>
> Thank you people.
> ---
> David Gonzalez H.
> DGHVoIP - OPEN SOURCE TELEPHONY SOLUTIONS
> Phone Bogotá: +(57-1)289-1168
> Phone Medellin: +(57-4)247-0985
>  Mobile: +(57)315-838-8326
> MSN: david@planetaradio.net [1]
> Skype: davidgonzalezh
> WEB: http://www.dghvoip.com/ [2]
>  Proud Linux User #294661
>
> On Sun, Dec 12, 2010 at 2:25 PM, Boris Derzhavets  wrote:
>
>> I've tried compiling the Kernel from Source, I've also tried Fedora
> 14, which has a flaky > pv_ops Dom0 kernel which DOESN'T work at all,
> but none of these seem to work.
>
> http://www.linuxtoday.com/infrastructure/2010090900235OSSV [4]
>
> Boris.
>
> --- On SUN, 12/12/10, DAVID GONZALEZ HERRERA __ wrote:
>
> From: David Gonzalez Herrera
> Subject: [Xen-users] XEN 4.0.1 + pv_ops Kernel + CentOS 5.5 x86_64, 
> is
> there an easier way.
>  To: "xen-users" , xen-devel@lists.xensource.com [7]
>  Date: Sunday, December 12, 2010, 12:42 PM
>
> Hi
>
> As you may've seen from my last posts I'm struggling to get the setup
> on my subject line to work without flaws.
>
> I've tried compiling the Kernel from Source, I've also tried Fedora
> 14, which has a flaky pv_ops Dom0 kernel which DOESN'T work at all,
> but none of these seem to work.
>
> I'm a mid-time XEN user, I just love it and want to stay away from 
> KVM
>  but the migration path is too rough when you want pv_ops Dom0, and
> all seem to be just projects, TODOs and snapshots, nothing really
> serious IMHO there's lots of misleading info and there are many gaps
> on existing howtos, I've read that SuSE has back-ported some stuff
> from 2.6.3.x branch into 2.6.18 but I want native and I don't want to
> be toying around with Debian'ish stuff in production environments.
>
> I'd like to keep using RH like system because of their robustness and
> because I'm used to work with it as a RHCE.
>
> Please, would you help me find a distro which would integrate
>
> RH like 
> XEN 4.0.1
> pv_ops Dom0 kernel
>
> I want to run telephony stuff on them and tho I kinda got my Openvox
> A1200P card to work 50% of the times now with xen 4.0.1 it won't work
> but I guess that's because I'm using Kernel 2.6.18.x with XEN 4 which
> is not recommended.
>
> Any advise will be deeply appreciated.
>
> Thank you.
>
> ---
> David Gonzalez H.
> DGHVoIP - OPEN SOURCE TELEPHONY SOLUTIONS
> Phone Bogotá: +(57-1)289-1168
>  Phone Medellin: +(57-4)247-0985
>  Mobile: +(57)315-838-8326
> MSN: david@planetaradio.net [8]
> Skype: davidgonzalezh
> WEB: http://www.dghvoip.com/ [9]
>  Proud Linux User #294661
>
> On Sun, Dec 12, 2010 at 12:20 PM, Ozan Safi  wrote:
>  Hi,
> Has there been any development in the OVF support for Xen?
> It was in the roadmap of Xen 3.4
> (http://www.xen.org/download/roadmap.html [11])
>
> /Ozan
> _______________________________________________
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>  Xen-users@lists.xensource.com [12]
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>
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>
> Links:
> ------
> [1] mailto:david@planetaradio.net
> [2] http://www.dghvoip.com/
> [3] mailto:bderzhavets@yahoo.com
> [4] http://www.linuxtoday.com/infrastructure/2010090900235OSSV
> [5] mailto:dgonzalezh@gmail.com
> [6] mailto:xen-users@lists.xensource.com
> [7] mailto:xen-devel@lists.xensource.com
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> [11] http://www.xen.org/download/roadmap.html
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 Mike