Re: [Xen-devel] [help] How to install xen with my own kernel on grub2?

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Sun, Jul 14, 2013 at 01:11:12AM +0800, Li Yechen wrote:
> Yes! I have fixed this and thank you all the same.
> Now the problems come to xend start:
> 
> xc: error: Could not obtain handle on privileged command interface (2 = No
> such file or directory): Internal error
> Traceback (most recent call last):
>   File "/usr/sbin/xend", line 36, in <module>
>     from xen.xend.server import SrvDaemon
>   File "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDaemon.py",
> line 26, in <module>
>     import relocate
>   File "/usr/lib64/python2.7/site-packages/xen/xend/server/relocate.py",
> line 28, in <module>
>     from xen.xend import XendDomain
>   File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py", line
> 36, in <module>
>     from xen.xend import XendOptions, XendCheckpoint, XendDomainInfo
>   File "/usr/lib64/python2.7/site-packages/xen/xend/XendCheckpoint.py",
> line 20, in <module>
>     from xen.xend import balloon, sxp, image
>   File "/usr/lib64/python2.7/site-packages/xen/xend/image.py", line 46, in
> <module>
>     xc = xen.lowlevel.xc.xc()
> xen.lowlevel.xc.Error: (1, 'Internal error', 'xc_interface_open failed: No
> such file or directory')
> 
> google says that /proc/xen should mount to xenfs, while I see no.
> I'm still searching the solution :(
> 

Make sure your kernel has all the necessary Xen drivers compiled in or
loaded.

> why so many errors come out in Fedora?
> By the way, what kind of OS do you suggest in Xen development?
> I give up CentOS because it's too hard to find a suitable package when
> trying to install software. And the gcc version is also too low.
> 
> 

Debian Wheezy works quite well for me. However you might need to compile
your own Dom0 kernel there seems to be a regression on its default 3.2
kernel. It might not boot on some hardware.


Wei.

> 
> On Sun, Jul 14, 2013 at 12:57 AM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> 
> > On Sat, Jul 13, 2013 at 09:35:45PM +0800, Li Yechen wrote:
> > > Hi Meng,
> > >
> > > > Grub2 script checks the Xen options of each Linux kernel's
> > configuration
> > > > file under /boot. If no such config, it won't create the relative
> > entry.
> > > > You can have a look at the 20_linux_xen script under /etc/grub.d/ to
> > get
> > > > more details.
> > >
> > >
> > > Thank you very for your advice!  I does not find the config as you said.
> > > Anyway I write a menuentry manually and now it seems to work.
> > >
> > > but then when I try to start xend, an error come out as:
> > >
> > >   File "/usr/sbin/xend", line 36, in <module>
> > >     from xen.xend.server import SrvDaemon
> > >   File "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDaemon.py",
> > > line 20, in <module>
> > >     import xen.lowlevel.xc
> > > ImportError: libxenctrl.so.4.2: cannot open shared object file: No such
> > > file or directory
> > >
> > > I think my steps to install xen is right. Google says that it's something
> > > wrong with lib64.
> > >
> > > I never meet this error before in CentOS. Do you have any ideas?
> > >
> > >
> >
> > You probably need to edit /etc/ld.so.conf and  run 'ldconfig' to tell
> > the dynamic linker to pick up the newer installed libraries.
> >
> >
> > Wei.
> >
> > >
> > >
> > >
> > > On Sat, Jul 13, 2013 at 12:02 PM, Meng <xumengpanda@xxxxxxxxx> wrote:
> > >
> > > > Hi Yechen,
> > > >
> > > > Grub2 script checks the Xen options of each Linux kernel's
> > configuration
> > > > file under /boot. If no such config, it won't create the relative
> > entry.
> > > >
> > > > You can have a look at the 20_linux_xen script under /etc/grub.d/ to
> > get
> > > > more details.
> > > >
> > > > Best,
> > > >
> > > > Meng
> > > >
> > > > ---
> > > > Meng Xu
> > > > Phd Candidate in Computer and Information Science
> > > > University of Pennsylvania
> > >
> > >
> > >
> > >
> > > --
> > > Yechen Li
> > >
> > > Team of System Virtualization and Cloud Computing
> > > School of Electronic Engineering  and Computer Science,
> > > Peking University, China
> > >
> > > Nothing is impossible because impossible itself  says: " I'm possible "
> > > lccycc From PKU
> >
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@xxxxxxxxxxxxx
> > > http://lists.xen.org/xen-devel
> >
> >
> 
> 
> -- 
> Yechen Li
> 
> Team of System Virtualization and Cloud Computing
> School of Electronic Engineering  and Computer Science,
> Peking University, China
> 
> Nothing is impossible because impossible itself  says: " I'm possible "
> lccycc From PKU

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