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* [Qemu-devel] [Bug 1586611] [NEW] usb-hub can not be detached when detach usb device from VM
@ 2016-05-28  9:28 Michael liu
  2016-05-30  7:50 ` [Qemu-devel] [Bug 1586611] " Michael liu
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: Michael liu @ 2016-05-28  9:28 UTC (permalink / raw)
  To: qemu-devel

Public bug reported:

I give a host usb device to guest in the way of using "virsh attach-device" cmd. In guest os,use "lsusb" cmd I can see two devices have been added,one is usb device and the other is usb-hub（0409:55aa NEC Corp. Hub）.
when I use "virsh detach-device" detach the usb device,in guest os the usb-hub was still exists.
It can create a bad impression when operating the VM,for example,suspend and resume the VM,qemu would report that:

2016-05-24T12:03:54.434369Z qemu-kvm: Unknown savevm section or instance
'0000:00:01.2/2/usb-hub' 0

2016-05-24T12:03:54.434742Z qemu-kvm: load of migration failed: Invalid
argument

>From qemu's code,it can be sure that the usb-hub is generated by qemu,and the process of detaching usb-hub has already been executed,but failed.With adding print information,error as follows:
libusbx: error [do_close] Device handle closed while transfer was still being processed, but the device is still connected as far as we know
libusbx: warning [do_close] A cancellation for an in-flight transfer hasn't completed but closing the device handle

** Affects: qemu
     Importance: Undecided
         Status: New

** Summary changed:

- usb-hub can not be detached when detach usb VM
+ usb-hub can not be detached when detach usb  from VM

** Summary changed:

- usb-hub can not be detached when detach usb  from VM
+ usb-hub can not be detached when detach usb  device from VM

** Description changed:

- I give a host usb device to guest in the way of passthrough,use "virsh attach-device" cmd. In guest os,use "lsusb" cmd I can see two devices have been added,one is usb device and the other is usb-hub（0409:55aa NEC Corp. Hub）.
+ I give a host usb device to guest in the way of using "virsh attach-device" cmd. In guest os,use "lsusb" cmd I can see two devices have been added,one is usb device and the other is usb-hub（0409:55aa NEC Corp. Hub）.
  when I use "virsh detach-device" detach the usb device,in guest os the usb-hub was still exists.
  It can create a bad impression when operating the VM,for example,suspend and resume the VM,qemu would report that:
  
  2016-05-24T12:03:54.434369Z qemu-kvm: Unknown savevm section or instance
  '0000:00:01.2/2/usb-hub' 0
  
  2016-05-24T12:03:54.434742Z qemu-kvm: load of migration failed: Invalid
  argument
  
  From qemu's code,it can be sure that the usb-hub is generated by qemu,and the process of detaching usb-hub has already been executed,but failed.With adding print information,error as follows:
  libusbx: error [do_close] Device handle closed while transfer was still being processed, but the device is still connected as far as we know
  libusbx: warning [do_close] A cancellation for an in-flight transfer hasn't completed but closing the device handle

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1586611

Title:
  usb-hub can not be detached when detach usb  device from VM

Status in QEMU:
  New

Bug description:
  I give a host usb device to guest in the way of using "virsh attach-device" cmd. In guest os,use "lsusb" cmd I can see two devices have been added,one is usb device and the other is usb-hub（0409:55aa NEC Corp. Hub）.
  when I use "virsh detach-device" detach the usb device,in guest os the usb-hub was still exists.
  It can create a bad impression when operating the VM,for example,suspend and resume the VM,qemu would report that:

  2016-05-24T12:03:54.434369Z qemu-kvm: Unknown savevm section or
  instance '0000:00:01.2/2/usb-hub' 0

  2016-05-24T12:03:54.434742Z qemu-kvm: load of migration failed:
  Invalid argument

  From qemu's code,it can be sure that the usb-hub is generated by qemu,and the process of detaching usb-hub has already been executed,but failed.With adding print information,error as follows:
  libusbx: error [do_close] Device handle closed while transfer was still being processed, but the device is still connected as far as we know
  libusbx: warning [do_close] A cancellation for an in-flight transfer hasn't completed but closing the device handle

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1586611/+subscriptions

^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2018-08-30 10:25 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-05-28  9:28 [Qemu-devel] [Bug 1586611] [NEW] usb-hub can not be detached when detach usb device from VM Michael liu
2016-05-30  7:50 ` [Qemu-devel] [Bug 1586611] " Michael liu
2016-05-30  8:14 ` Michael liu
2016-05-30 11:43 ` Michael liu
2016-06-02  2:37 ` Michael liu
2016-06-06  2:39 ` Michael liu
2016-06-27 10:48 ` Forest Lee
2018-08-30 10:11 ` Gerd Hoffmann

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