[Qemu-devel] [Bug 1376798] [NEW] Qemu does not hotplug (usb) devices

[Qemu-devel] [Bug 1376798] [NEW] Qemu does not hotplug (usb) devices

[ManDay]

Public bug reported:

Qemu passes through all devices on Bus 3 with host-usb all right when
issued so on the command line such as

... -device usb-ehci,id=USBCtrl -device host-
usb,bus=USBCtrl.0,hostaddr=5

but it does not pass through the devices newly hotplugged to the host
after Qemu has already started. One has to explicitly issue

device_add host-usb,bus=USBCtrl.0 ....

on the monitor, in order for the guest (Win7 in my case) to see those
devices.

** Affects: qemu
     Importance: Undecided
         Status: New

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Title:
  Qemu does not hotplug (usb) devices

Status in QEMU:
  New

Bug description:
  Qemu passes through all devices on Bus 3 with host-usb all right when
  issued so on the command line such as

  ... -device usb-ehci,id=USBCtrl -device host-
  usb,bus=USBCtrl.0,hostaddr=5

  but it does not pass through the devices newly hotplugged to the host
  after Qemu has already started. One has to explicitly issue

  device_add host-usb,bus=USBCtrl.0 ....

  on the monitor, in order for the guest (Win7 in my case) to see those
  devices.

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[Qemu-devel] [Bug 1376798] Re: Qemu does not hotplug (usb) devices

[Peter Wu]

Not a bug, Linux increases the Device ID each time a new device gets
hotplugged. If you need to use this option, pair it with already
connected drivers by parsing the output of lsusb for instance.

You can still use combinations of hostbus, vendorid, productid, etc.

** Changed in: qemu
       Status: New => Invalid

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Title:
  Qemu does not hotplug (usb) devices

Status in QEMU:
  Invalid

Bug description:
  Qemu passes through all devices on Bus 3 with host-usb all right when
  issued so on the command line such as

  ... -device usb-ehci,id=USBCtrl -device host-
  usb,bus=USBCtrl.0,hostaddr=5

  but it does not pass through the devices newly hotplugged to the host
  after Qemu has already started. One has to explicitly issue

  device_add host-usb,bus=USBCtrl.0 ....

  on the monitor, in order for the guest (Win7 in my case) to see those
  devices.

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[Qemu-devel] [Bug 1376798] Re: Qemu does not hotplug (usb) devices

[ManDay]

Please note that since I did not specify a Device ID (a.k.a. Host
Address) but only the bus (3), I'd expect all devices on bus 3 to be
(automatically) added to the guest usb, even if they are plugged into
the host after Qemu is started. I take the liberty of changing the
status to "Opinion", if you still deem it invalid, feel free to close.

** Changed in: qemu
       Status: Invalid => Opinion

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Title:
  Qemu does not hotplug (usb) devices

Status in QEMU:
  Opinion

Bug description:
  Qemu passes through all devices on Bus 3 with host-usb all right when
  issued so on the command line such as

  ... -device usb-ehci,id=USBCtrl -device host-
  usb,bus=USBCtrl.0,hostaddr=5

  but it does not pass through the devices newly hotplugged to the host
  after Qemu has already started. One has to explicitly issue

  device_add host-usb,bus=USBCtrl.0 ....

  on the monitor, in order for the guest (Win7 in my case) to see those
  devices.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1376798/+subscriptions

[Qemu-devel] [Bug 1376798] Re: Qemu does not hotplug (usb) devices

[ManDay]

I just noticed that I had mistakenly written "hostaddr=5" in the initial
post. That should have been hostbus=3. But I'll make sure my description
is correct again and will close if it turns out not to be. Sorry for the
confusion.

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Title:
  Qemu does not hotplug (usb) devices

Status in QEMU:
  Invalid

Bug description:
  Qemu passes through all devices on Bus 3 with host-usb all right when
  issued so on the command line such as

  ... -device usb-ehci,id=USBCtrl -device host-
  usb,bus=USBCtrl.0,hostaddr=5

  but it does not pass through the devices newly hotplugged to the host
  after Qemu has already started. One has to explicitly issue

  device_add host-usb,bus=USBCtrl.0 ....

  on the monitor, in order for the guest (Win7 in my case) to see those
  devices.

To manage notifications about this bug go to:
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[Qemu-devel] [Bug 1376798] Re: Qemu does not hotplug (usb) devices

[ManDay]

Just closing anyway. If I find my description to correct I'll open a new
bug with the correct description this time.

** Changed in: qemu
       Status: Opinion => Invalid

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https://bugs.launchpad.net/bugs/1376798

Title:
  Qemu does not hotplug (usb) devices

Status in QEMU:
  Invalid

Bug description:
  Qemu passes through all devices on Bus 3 with host-usb all right when
  issued so on the command line such as

  ... -device usb-ehci,id=USBCtrl -device host-
  usb,bus=USBCtrl.0,hostaddr=5

  but it does not pass through the devices newly hotplugged to the host
  after Qemu has already started. One has to explicitly issue

  device_add host-usb,bus=USBCtrl.0 ....

  on the monitor, in order for the guest (Win7 in my case) to see those
  devices.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1376798/+subscriptions

[Qemu-devel] [Bug 1376798] Re: Qemu does not hotplug (usb) devices

[ManDay]

*** This bug is a duplicate of bug 1377163 ***
    https://bugs.launchpad.net/bugs/1377163

** This bug has been marked a duplicate of bug 1377163
   Does not add usb-host devices as they are hotplugged

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https://bugs.launchpad.net/bugs/1376798

Title:
  Qemu does not hotplug (usb) devices

Status in QEMU:
  Invalid

Bug description:
  Qemu passes through all devices on Bus 3 with host-usb all right when
  issued so on the command line such as

  ... -device usb-ehci,id=USBCtrl -device host-
  usb,bus=USBCtrl.0,hostaddr=5

  but it does not pass through the devices newly hotplugged to the host
  after Qemu has already started. One has to explicitly issue

  device_add host-usb,bus=USBCtrl.0 ....

  on the monitor, in order for the guest (Win7 in my case) to see those
  devices.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1376798/+subscriptions