I've replaced with openReadOnly(0), but had a "argument 1 must be string or None, not int" issue, so I changed to None, but I had : [root@unc-srv-hyp2 ~]$ python2.6 usb_dev.py Traceback (most recent call last): File "usb_dev.py", line 5, in <module> devices = conn.listAllDevices() TypeError: listAllDevices() takes exactly 2 arguments (1 given) I put the VM name in openReadOnly("unc-srv-prnt3") and I had this issue : libvirt: error : no connection driver available for unc-srv-prnt3 Traceback (most recent call last): File "usb_dev.py", line 4, in <module> conn = libvirt.openReadOnly("unc-srv-prnt3") File "/usr/lib64/python2.6/site-packages/libvirt.py", line 247, in openReadOnly if ret is None:raise libvirtError('virConnectOpenReadOnly() failed') libvirt.libvirtError: no connection driver available for unc-srv-prnt3 What's wrong ? Alain VONDRA Chargé d'exploitation des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr -----Message d'origine----- De : Martin Polednik [mailto:mpolednik@redhat.com] Envoyé : vendredi 16 janvier 2015 15:47 À : VONDRA Alain Cc : users@ovirt.org; Michal Skrivanek Objet : Re: [ovirt-users] USB Modem in a VM ----- Original Message -----
From: "VONDRA Alain" <AVONDRA@unicef.fr> To: "Martin Polednik" <mpolednik@redhat.com> Cc: users@ovirt.org, "Michal Skrivanek" <mskrivan@redhat.com> Sent: Friday, January 16, 2015 2:45:09 PM Subject: Re: [ovirt-users] USB Modem in a VM
Hi Martin, That's what I've done, but the result is a missing argument.
[root@unc-srv-hyp2 ~]$ python2.6 usb_dev.py Traceback (most recent call last): File "usb_dev.py", line 4, in <module> conn = libvirt.openReadOnly() TypeError: openReadOnly() takes exactly 1 argument (0 given
My mistake, you can use openReadOnly(0) (can be omitted for some libvirt versions).
Alain
Alain VONDRA Chargé d'exploitation des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr
-----Message d'origine----- De : Martin Polednik [mailto:mpolednik@redhat.com] Envoyé : vendredi 16 janvier 2015 13:18 À : VONDRA Alain Cc : users@ovirt.org; Michal Skrivanek Objet : Re: [ovirt-users] USB Modem in a VM
----- Original Message -----
From: "VONDRA Alain" <AVONDRA@unicef.fr> To: "Martin Polednik" <mpolednik@redhat.com> Cc: users@ovirt.org, "Michal Skrivanek" <mskrivan@redhat.com> Sent: Friday, January 16, 2015 12:30:10 PM Subject: Re: [ovirt-users] USB Modem in a VM
Ok Martin, I'll try the python script, but I'm a newbie in python, which argumenet I need to put to execute it ? Thank you Alain
Simply save it into something like listdevices.py and run $ python listdevices.py. It will list libvirt XML for all of the devices, you just need to find correct vendor id/product id for your usb device and then use the name for detach e.g. nodedev-detach usb_usb0.
Alain VONDRA Chargé d'exploitation des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr
-----Message d'origine----- De : Martin Polednik [mailto:mpolednik@redhat.com] Envoyé : vendredi 16 janvier 2015 12:18 À : VONDRA Alain Cc : Alon Bar-Lev; Michal Skrivanek; users@ovirt.org Objet : Re: [ovirt-users] USB Modem in a VM
----- Original Message -----
From: "VONDRA Alain" <AVONDRA@unicef.fr> To: "Martin Polednik" <mpolednik@redhat.com> Cc: "Alon Bar-Lev" <alonbl@redhat.com>, "Michal Skrivanek" <mskrivan@redhat.com>, users@ovirt.org Sent: Friday, January 16, 2015 12:10:35 PM Subject: RE: [ovirt-users] USB Modem in a VM
Hi, I'm sure of the device, it's clearer with lsusb, you see all the infos about the device :
Bus 001 Device 006: ID 0572:1321 Conexant Systems (Rockwell), Inc. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 2 Communications bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0572 Conexant Systems (Rockwell), Inc. idProduct 0x1321 bcdDevice 1.00 iManufacturer 1 Conexant iProduct 2 USB Modem iSerial 3 24680246 bNumConfigurations 2 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 73 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4
With nodedev we just see device nodes, pretty difficult to identify, even with --tree opt :
usb_1_0_1_0 usb_1_1 usb_1_1_1_0 usb_1_1_4 usb_1_1_4_1_0 usb_1_1_4_1_1 usb_1_1_6 usb_1_1_6_1 usb_1_1_6_1_0 usb_1_1_6_1_1_0 usb_1_1_6_1_1_1 usb_1_1_6_1_1_2 usb_2_0_1_0 usb_2_1 usb_2_1_1_0 usb_usb1 usb_usb2
The issue is, you need to get libvirt name of the device and run the nodedev-detach - have you done that with no success?
If not, use some simple script such as (python)
import libvirt
conn = libvirt.openReadOnly() devices = conn.listAllDevices() for dev in devices: print dev.XMLDesc()
to easily find the device and use the <name> element for nodedev-detach call. That should handle unbinding it from the driver and possibly binding it to some usb stub if that exists. If that doesn't fix it, I admit that I'm not sure what could be the cause apart from OS/hw.
The xml injected is, I think right :
<hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x0572'/> <product id='0x1321'/> </source> </hostdev>
Even with The device on the VM xml, the device does'nt appears in the Windows VM. Regards Alain
Alain VONDRA Chargé d'exploitation des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr
-----Message d'origine----- De : Martin Polednik [mailto:mpolednik@redhat.com] Envoyé : vendredi 16 janvier 2015 11:37 À : VONDRA Alain Cc : Alon Bar-Lev; Michal Skrivanek; users@ovirt.org Objet : Re: [ovirt-users] USB Modem in a VM
----- Original Message -----
From: "VONDRA Alain" <AVONDRA@unicef.fr> To: "Alon Bar-Lev" <alonbl@redhat.com>, "Michal Skrivanek" <mskrivan@redhat.com> Cc: users@ovirt.org Sent: Thursday, January 15, 2015 10:33:19 PM Subject: Re: [ovirt-users] USB Modem in a VM
Hi, I've tried also to inject the device with virsh attach-device, all seems to work but nothing happen in the VM :
[root@unc-srv-hyp2 ~]$ virsh attach-device unc-srv-prnt3 usb-modem.xml Please enter your authentication name: root Please enter your password: Device attached successfully
What did I do wrong, any ideas ?
Hello, One possibility might be the fact that libvirt itself doesn't have managed mode for USB devices and I'm not sure virt-manager has the appropriate routine handled.
Could you try running $ virsh nodedev-list to find the correct usb device and then # virsh nodedev-detach the_usb_device or posibly nodedev-dettach if you run older libvirt?
After that, try starting VM with hostdev element added to XML.
Regards
Alain VONDRA Chargé d'exploitation des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr
________________________________________ De : Alon Bar-Lev [alonbl@redhat.com] Envoyé : jeudi 15 janvier 2015 21:23 À : VONDRA Alain; Michal Skrivanek Cc : users@ovirt.org Objet : Re: [ovirt-users] USB Modem in a VM
Michal, any clue?
----- Original Message -----
From: "VONDRA Alain" <AVONDRA@unicef.fr> To: "Alon Bar-Lev" <alonbl@redhat.com> Cc: users@ovirt.org Sent: Thursday, January 15, 2015 5:56:47 PM Subject: RE: [ovirt-users] USB Modem in a VM
Hi, Thank you for your answer, I've tried to insert my USB modem, but it doesn't up in the Windows VM. I've tried to insert via virt-manager without success, I can't apply the modification, however I see the modem using lsusb :
lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 003: ID 0624:0248 Avocent Corp. Virtual Hub Bus 001 Device 004: ID 0624:0249 Avocent Corp. Virtual Keyboard/Mouse Bus 002 Device 010: ID 0572:1321 Conexant Systems (Rockwell), Inc.
I've unload the "cdc_acm" kernel module via rmmod without success. I've also tried to edit the xml appending the ID and VENDDOR tags :
<hostdev mode='subsystem' type='usb'> <source> <vendor id='0x0572'/> <product id='0x1321'/> </source> </hostdev>
Ut at the first load the config disappears... Do I need to restart the host or restart libvirtd services ?
Thanks for your help Alain
Alain VONDRA Chargé d'exploitation des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr
-----Message d'origine----- De : Alon Bar-Lev [mailto:alonbl@redhat.com] Envoyé : mardi 13 janvier 2015 17:47 À : VONDRA Alain Cc : users@ovirt.org Objet : Re: [ovirt-users] USB Modem in a VM
----- Original Message -----
From: "VONDRA Alain" <AVONDRA@unicef.fr> To: users@ovirt.org Sent: Tuesday, January 13, 2015 5:55:01 PM Subject: [ovirt-users] USB Modem in a VM
Hi,
Can you tell me if I can use an USB modem through one of the hypervisor hosts to a Windows VM ?
I’d like to install a Windows Fax Server.
Thank you for your answers.
should be possible using qemu args: -usbdevice host:vendor_id:product_id
in libvirt replace @VENDOR@ and @DEVICE@ to device specific properties:
<domain type='kvm'> <name>...</name> … <devices> … <hostdev mode='subsystem' type='usb'> <source> <vendor id='0x@VENDOR@'/> <product id='0x@DEVICE@'/> </source> </hostdev> </devices> </domain>
if this option is not exposed in ui you can use vdsm-hooks[1] to modify the libvirt configuration and inject such device.
Regards, Alon
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