Re: [Xen-users] Ubuntu DomU

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Sat, Feb 15, 2014 at 02:48:43AM +0000, Jonathan Tripathy wrote:
> Hi Everyone,
> 
> I've installed Xen on my CentOs 6 machine using this guide:
> http://wiki.centos.org/HowTos/Xen/Xen4QuickStart
> 
> So far, most things seem to be working fine. Here is the version of
> Xen installed:
> 
> release                : 3.10.27-11.el6.centos.alt.x86_64
> version                : #1 SMP Fri Jan 24 23:23:03 UTC 2014
> machine                : x86_64
> nr_cpus                : 4
> nr_nodes               : 1
> cores_per_socket       : 4
> threads_per_core       : 1
> cpu_mhz                : 3192
> hw_caps                : 
> bfebfbff:28100800:00000000:00007f40:77bae3ff:00000000:00000001:00000281
> virt_caps              : hvm_directio
> total_memory           : 32643
> free_memory            : 28827
> free_cpus              : 0
> xen_major              : 4
> xen_minor              : 2
> xen_extra              : .3-27.el6
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p
> xen_scheduler          : credit
> xen_pagesize           : 4096
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : unavailable
> xen_commandline        : dom0_mem=1024M,max:1024M loglvl=all
> guest_loglvl=all
> cc_compiler            : gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)
> cc_compile_by          : mockbuild
> cc_compile_domain      : centos.org
> cc_compile_date        : Fri Jan 24 20:49:25 UTC 2014
> xend_config_format     : 4
> 
> 
> However, when I try to boot my Ubuntu 12.04 DomU (obtained from
> stacklet), this won't boot. This distro works fine on our other Xen
> machines which unlike this server, run a Ubuntu Dom0.
> 

So the other server has identical configuration (from hardware to
software) except for Dom0 kernel?

> Any ideas? When I try to launch the PV DomU, I see the pygrub
> screen, and when I hit enter, the DomU just crashes. Nothing appears
> in any of the DomU logs if I mount the disk to check.
> 
> Help would be appreciated.
> 

It would be good if you can post your DomU's config file. Also you can
configure Xen and DomU to higher loglevel to capture more logs. The
crash backtrace is cirtical to solving your problem.

Wei.

> Thanks
> 
> Jonny
> 
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> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users

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