Re: [Xen-devel] Re: Failure to start xend with 2.6.32.15 (c2cb3df04eb3ff68d0de102b2acacc9b8616e659) under Xen 4.0

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

> Backported to 4.0. Wasn't sure about putting it into 3.4 yet? I'm not too
> fussed either way. It's working okay for me and it is basically the right
> thing to do. :-)

It means back ported to xen-4.0-testing.hg ( it's impossible to back port  xen-4.0.0.tar.gz)

Yes it 's back ported. Tested OK on top of Ubuntu 10.04 Server.

host                   : ServerLLX
release                : 2.6.32.15
version                : #2 SMP Wed Jun 9 14:36:24 MSD 2010
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2833
hw_caps                : bfebfbff:20100800:00000000:00000940:0408e3fd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 8190
free_memory            : 1671
node_to_cpu            : node0:0-3
node_to_memory         : node0:1671
node_to_dma32_mem      : node0:809
max_node_id            : 0
xen_major              : 4
xen_minor              : 0
xen_extra              : .1-rc2-pre
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Mon Jun 07 07:24:02 2010 +0100 21189:877f0211cf71
xen_commandline        :
cc_compiler            : gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
cc_compile_by          : root
cc_compile_domain      :
cc_compile_date        : Wed Jun  9 14:52:42 MSD 2010
xend_config_format     : 4

root@ServerLLX:~# brctl show
bridge name    bridge id        STP enabled    interfaces
eth0        8000.90e6ba2d11eb    no        peth0
virbr0        8000.000000000000    yes       

For 2.6.32.15 under Xen 4.0.1-rc2-pre

root@ServerLLX:~# cd /dev/xen
root@ServerLLX:/dev/xen# ls -l
total 0
crw-rw---- 1 root root 10, 62 2010-06-09 14:54 evtchn
crw-rw---- 1 root root 10, 61 2010-06-09 14:54 gntdev

is OK.

Via my experience in meantime Xen 4.0 official release doesn't have either
origin/xen/stable or origin/xen/stable-2.6.32.x branch generating kernel supporting it's Dom0.

Boris.

--- On Wed, 6/9/10, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:

From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: Failure to start xend with 2.6.32.15 (c2cb3df04eb3ff68d0de102b2acacc9b8616e659) under Xen 4.0
To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>, "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Wednesday, June 9, 2010, 6:34 AM

On 08/06/2010 19:50, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx> wrote:

>> Seems like  i have  evtchn device missing, regardless in .config :-
>>
>
> You should be able to see if its present in the kernel by looking at
> /proc/misc, but something still needs to create the /dev nodes.  Usually
> this is udev, but libxc goes to special lengths to get this wrong, and
> will end up deleting the perfectly good nodes unless you update it.
>
> Keir, have the libxc changes been backported to all the release trees?

Backported to 4.0. Wasn't sure about putting it into 3.4 yet? I'm not too
fussed either way. It's working okay for me and it is basically the right
thing to do. :-)

-- Keir



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