[libvirt] Cannot enumerate physical devices with libvirt 0.7.6

[Dave Allan]

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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