Re: [Xen-devel] [PATCH] qemu-xen-3.4-testing: Fix read-only image file handling

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 07/06/2010 17:37, "Michal Novotny" <minovotn@xxxxxxxxxx> wrote:

>> Do files /proc/xen/xsd_kva and /proc/xen/xsd_port exist? If not you need to
>> configure and/or install the appropriate xenstore-related kernel module
>> (whatever that may be, in pv_ops land).
>> 
>>   -- Keir
>>    
> 
> Thanks but I checked it and they exist and it seems to be OK. Also, the
> strange thing is that even if I put modprobe to /etc/init.d/xend before
> start the module can't get probed and lsmod is showing only xenfs module
> but no xen_evtchn loaded. I need to modprobe it manually, run xenstored
> manually and then after starting xen daemon the error of dom0 state happens.

I suggest add some tracing to function dom0_init() in xenstored and see
where that function is failing. The two most obvious places were the opening
of those two files in /proc. If they exist then I'm not sure what else could
be going wrong.

Oh, you should be able to cat /proc/xen/ksd_port and get an integer value.
/proc/xen/ksd_kva by contrast gets mmap()ed by xenstored.

 -- Keir



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