[libvirt] Cannot enumerate physical devices with libvirt 0.7.6

Tue Feb 16 20:55:40 UTC 2010

On 02/16/2010 03:04 PM, Frédéric Grelot wrote:
> Yep, here is what I get (see at the end) :
>
> 14:06:22.071: debug : do_open:1110 : name "qemu:///system" to URI components:
>    scheme qemu
>    opaque (null)
>    authority (null)
>    server (null)
>    user (null)
>    port 0
>    path /system
>
> 14:06:22.071: debug : do_open:1120 : trying driver 0 (Test) ...
> 14:06:22.071: debug : do_open:1126 : driver 0 Test returned DECLINED
> 14:06:22.071: debug : do_open:1120 : trying driver 1 (OPENVZ) ...
> 14:06:22.071: debug : do_open:1126 : driver 1 OPENVZ returned DECLINED
> 14:06:22.071: debug : do_open:1120 : trying driver 2 (VBOX) ...
> 14:06:22.071: debug : do_open:1126 : driver 2 VBOX returned DECLINED
> 14:06:22.071: debug : do_open:1120 : trying driver 3 (remote) ...
> 14:06:22.071: debug : do_open:1126 : driver 3 remote returned DECLINED
> 14:06:22.071: debug : do_open:1120 : trying driver 4 (QEMU) ...
> 14:06:22.071: debug : do_open:1126 : driver 4 QEMU returned SUCCESS
> 14:06:22.071: debug : do_open:1146 : network driver 0 Test returned DECLINED
> 14:06:22.071: debug : do_open:1146 : network driver 1 VBOX returned DECLINED
> 14:06:22.071: debug : do_open:1146 : network driver 2 remote returned DECLINED
> 14:06:22.071: debug : do_open:1146 : network driver 3 Network returned SUCCESS
> 14:06:22.071: debug : do_open:1165 : interface driver 0 Test returned DECLINED
> 14:06:22.071: debug : do_open:1165 : interface driver 1 remote returned DECLINED
> 14:06:22.072: debug : do_open:1185 : storage driver 0 Test returned DECLINED
> 14:06:22.072: debug : do_open:1185 : storage driver 1 VBOX returned DECLINED
> 14:06:22.072: debug : do_open:1185 : storage driver 2 remote returned DECLINED
> 14:06:22.072: debug : do_open:1185 : storage driver 3 storage returned SUCCESS
> 14:06:22.072: debug : do_open:1205 : node driver 0 Test returned DECLINED
> 14:06:22.072: debug : do_open:1205 : node driver 1 remote returned DECLINED
> 14:06:22.072: debug : do_open:1232 : secret driver 0 Test returned DECLINED
> 14:06:22.072: debug : do_open:1232 : secret driver 1 remote returned DECLINED
> 14:06:22.072: debug : do_open:1232 : secret driver 2 secret returned SUCCESS
> 14:06:22.072: debug : virConnectClose:1381 : conn=0x1eaf0b0
>
>
> I think the times when I get those lines matches with my "virsh nodedev-list" requests (or something like this : virt-manager tries to create a vm, add hardware...).
>
> Does this help?

That's odd, you only have two entries in the node driver array, and I 
have four on my test system, which I just installed.  How did you 
install the box, install F12, then what?  Just to rule this out, did you 
rebuild the RPM?

> Frederic.
>
>
> ----- "Dave Allan"<dallan at redhat.com>  a écrit :
>
>> On 02/16/2010 03:00 AM, Frédéric Grelot wrote:
>>>> Daniel was referring to the libvirt udev driver--the libvirt code
>> that
>>>>
>>>> interacts with udev--not to udev itself, which is what you're
>> testing
>>>>
>>>> with udevadm.
>>>
>>> Ok, sorry... At least I ensured that udev itself is on...
>>>
>>>>    In any of your logs when you have libvirt debug logging
>>>> turned on, do you see the message:
>>>>
>>>> Registering udev node device backend
>>>
>>> Nope, I checked in /var/log/* and libvirt.log in debug mode (which,
>> after 1 1/2 day of "debug" activity enabled, is already 2Gb!)
>>> There is no mention of udev. I think it means that the udev driver
>> is not loaded in libvirt? How could enable it then? (or produce some
>> message telling me why it is not) ?
>>>
>>>
>>>> These messages are the result of not being able to find the
>> device,
>>>> which is consistent with the other things you're seeing.  These
>> are
>>>> all symptoms of the node device code not running.
>>>
>>> OK, I'll wait for your suggestions...
>>
>> Do you see messages like:
>>
>>
>> 14:35:01.849: debug : do_open:1205 : node driver 0 Test returned
>> DECLINED
>> 14:35:01.849: debug : do_open:1205 : node driver 1 ESX returned
>> DECLINED
>> 14:35:01.849: debug : do_open:1205 : node driver 2 remote returned
>> DECLINED
>> 14:35:01.849: debug : do_open:1205 : node driver 3 udevDeviceMonitor
>> returned SUCCESS
>>
>> in your debug log?
>>
>>
>>> Frederic.
>>>
>>>
>>>>
>>>>> Have you any other Idea?
>>>>> Frederic.
>>>>>
>>>>>
>>>>> ----- "Daniel P. Berrange"<berrange at redhat.com>    a écrit :
>>>>>
>>>>>> On Fri, Feb 12, 2010 at 08:05:21PM +0100, Fr?d?ric Grelot wrote:
>>>>>>> Hi all,
>>>>>>>
>>>>>>> I often update my F12 box with the rawvirt repository, which
>>>>>>> just
>>>>>> installed libvirt 0.7.6. Since that, I cannot enumerate physical
>>>>>> devices (and thus get a beautiful error when I start one of my
>> vms
>>>>>> that should use a USB device).
>>>>>>>
>>>>>>> I don't think I changed anything else on that box, and, of
>>>>>>> course, I
>>>>>> already restarted the libvirt daemon.
>>>>>>> I haven't restarted the server itself, because it is currently
>>>>>>> used,
>>>>>> but I could do it if necessary...
>>>>>>>
>>>>>>> I make good use of the qemu hypervisor, and I'm looking forward
>>>>>>> to
>>>>>> solve this issue!
>>>>>>>
>>>>>>> Frederic.
>>>>>>>
>>>>>>> # libvirtd --version libvirtd (libvirt) 0.7.6
>>>>>>>
>>>>>>> # virsh --version 0.7.6
>>>>>>>
>>>>>>> # virsh nodedev-list error :Failed to count node devices error
>>>>>>> :this function is not supported by the hypervisor:
>>>>>> virNodeNumOfDevices
>>>>>>
>>>>>> It would appear that the udev driver failed to start - there are
>>>>>> probably messages in syslog about the problem
>>>>>>
>>>>>>
>>>>>> Regards, Daniel -- |: Red Hat, Engineering, London   -o-
>>>>>> http://people.redhat.com/berrange/ :| |: http://libvirt.org  -o-
>>>>>> http://virt-manager.org  -o- http://ovirt.org :| |:
>>>>>> http://autobuild.org       -o- http://search.cpan.org/~danberr/
>> :|
>>>>>> |: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742
>>>>>> 7D3B 9505 :|
>>>>>
>>>>> -- libvir-list mailing list libvir-list at redhat.com
>>>>> https://www.redhat.com/mailman/listinfo/libvir-list
>>>
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