[libvirt] Cannot enumerate physical devices with libvirt 0.7.6

Tue Feb 16 20:04:42 UTC 2010

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?

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
> >
> > --
> > libvir-list mailing list
> > libvir-list at redhat.com
> > https://www.redhat.com/mailman/listinfo/libvir-list