Error booting domU

Error booting domU

[PeanuTech]

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I use xen-4.0.1-rc3-pre with linux 2.6.31.13 on Ubuntu Lucid and
virt-manager 0.8.4. When I try to run a Fedora 13 PV domain that I've
created I get the following error:

Error starting domain: POST operation failed: xend_post: error from xen
daemon: (xend.err "Boot loader didn't return any data!")

And the details are:

raceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/engine.py", line 814, in
run_domain
    vm.startup()
  File "/usr/share/virt-manager/virtManager/domain.py", line 1286, in
startup
    self._backend.create()
  File "/usr/lib/python2.6/dist-packages/libvirt.py", line 333, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: POST operation failed: xend_post: error from xen daemon:
(xend.err "Boot loader didn't return any data!")

I found on google several references to this problem, and almost alll of
them wrote that you need to make symbolic links, so that libvirt could find
the Xen components.

I don't know which files I need to link. What should I do?

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Re: Error booting domU

[Pasi Kärkkäinen]

On Sat, Jun 19, 2010 at 10:49:46PM +0300, PeanuTech wrote:
>    I use xen-4.0.1-rc3-pre with linux 2.6.31.13 on Ubuntu Lucid and
>    virt-manager 0.8.4. When I try to run a Fedora 13 PV domain that I've
>    created I get the following error:
>    Error starting domain: POST operation failed: xend_post: error from xen
>    daemon: (xend.err "Boot loader didn't return any data!")
>    And the details are:
>    raceback (most recent call last):
>      File "/usr/share/virt-manager/virtManager/engine.py", line 814, in
>    run_domain
>        vm.startup()
>      File "/usr/share/virt-manager/virtManager/domain.py", line 1286, in
>    startup
>        self._backend.create()
>      File "/usr/lib/python2.6/dist-packages/libvirt.py", line 333, in create
>        if ret == -1: raise libvirtError ('virDomainCreate() failed',
>    dom=self)
>    libvirtError: POST operation failed: xend_post: error from xen daemon:
>    (xend.err "Boot loader didn't return any data!")
>    I found on google several references to this problem, and almost alll of
>    them wrote that you need to make symbolic links, so that libvirt could
>    find the Xen components.
>    I don't know which files I need to link. What should I do?

Fedora 13 uses ext4 for /boot filesystem as a default. 
Is your Xen/pygrub compiled with ext4 support? 

You need to have suitable devel libraries installed before building Xen..
See http://wiki.xensource.com/xenwiki/Xen4.0 for required packages.

I think it's e2fslibs-dev in debian/ubuntu.

-- Pasi

Re: Error booting domU

[PeanuTech]

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My /boot fs is ext3, and my Dom0 starts.
I tried to rebuild xen and tools, and that error was gone.
But now I'm getting errors from virt-manager itself.

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Re: Error booting domU

[Pasi Kärkkäinen]

On Sun, Jun 20, 2010 at 10:50:55AM +0300, PeanuTech wrote:
>    My /boot fs is ext3, and my Dom0 starts.
>

I was talking about /boot of the *domU*.

>    I tried to rebuild xen and tools, and that error was gone.
>    But now I'm getting errors from virt-manager itself.
>

What kind of errors? 

-- Pasi

Re: Error booting domU

[PeanuTech]

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I'll try to install Xen 4 on Fedora 13, since all the virt-manager scripts
are written for Fedora.

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Re: Error booting domU

[Pasi Kärkkäinen]

On Mon, Jun 21, 2010 at 12:26:52AM +0300, PeanuTech wrote:
>    I'll try to install Xen 4 on Fedora 13, since all the virt-manager scripts
>    are written for Fedora.
>


See here for xen rpms for fedora:
http://koji.fedoraproject.org/koji/packageinfo?packageID=7

Those xen rpms have the required fixes to work with the latest xen pvops dom0 kernels.

pvops dom0 kernel rpm:
http://koji.fedoraproject.org/koji/taskinfo?taskID=2254110


And my instructions if you want to get newer xen version built from src.rpm:
http://lists.xensource.com/archives/html/xen-devel/2010-06/msg01116.html

-- Pasi