RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1046267 - Libvirt can not assign particular USB controller to USB disk in Domain
Summary: Libvirt can not assign particular USB controller to USB disk in Domain
Keywords:
Status: CLOSED DUPLICATE of bug 1215968
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.0
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Martin Kletzander
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-12-24 09:40 UTC by Hu Jianwei
Modified: 2015-07-22 14:18 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-07-22 14:18:33 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Hu Jianwei 2013-12-24 09:40:45 UTC 
Description of problem:
Libvirt can not assign particular USB controller to USB disk in Domain

Version-Release number of selected component (if applicable):
libvirt-1.1.1-16.el7.x86_64
qemu-kvm-rhev-1.5.3-21.el7.x86_64
kernel-3.10.0-60.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Add some USB disks to domain xml
...
<disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/usb-img/usb-1.img'/>
      <target dev='sda' bus='usb'/>
    </disk>
<disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/usb-img/usb-2.img'/>
      <target dev='sdb' bus='usb'/>
    </disk>
...

2. Added more than 2 USB controller to domain xml
 ...  
   <controller type='usb' index='0'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='usb' index='1'>
      <alias name='usb1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </controller>
    <controller type='usb' index='2'>
      <alias name='usb2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <controller type='usb' index='3'>
      <alias name='usb3'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>
...

3. Enter into guest OS to check those usb devices
[root@localhost ~]# lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 12M
    |__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/8p, 12M
        |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 4: Dev 7, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 5: Dev 8, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 6: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 7: Dev 10, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 8: Dev 11, If 0, Class=Hub, Driver=hub/8p, 12M
            |__ Port 1: Dev 12, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 2: Dev 13, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 3: Dev 14, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 4: Dev 15, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 5: Dev 16, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 6: Dev 17, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 7: Dev 18, If 0, Class=Mass Storage, Driver=usb-storage, 12M
            |__ Port 8: Dev 19, If 0, Class=Hub, Driver=hub/8p, 12M
                |__ Port 1: Dev 20, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 2: Dev 21, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 3: Dev 22, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 4: Dev 23, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 5: Dev 24, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 6: Dev 25, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 7: Dev 26, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                |__ Port 8: Dev 27, If 0, Class=Hub, Driver=hub/8p, 12M
                    |__ Port 1: Dev 28, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 2: Dev 29, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 3: Dev 30, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 4: Dev 31, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 5: Dev 32, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 6: Dev 33, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 7: Dev 34, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                    |__ Port 8: Dev 35, If 0, Class=Hub, Driver=hub/8p, 12M
                        |__ Port 1: Dev 36, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 2: Dev 37, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 3: Dev 38, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 4: Dev 39, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 5: Dev 40, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 6: Dev 41, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 7: Dev 42, If 0, Class=Mass Storage, Driver=usb-storage, 12M
                        |__ Port 8: Dev 43, If 0, Class=Mass Storage, Driver=usb-storage, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
[root@localhost ~]#

4. To check the address of USB devices
# virsh dumpxml rhel
<domain type='kvm' id='7'>
  <name>rhel</name>
  <uuid>205c40e0-e917-47fe-9c4a-1f35748ffd21</uuid>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
 ...
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/mnt/jiahu/images/rhel.img'>
        <seclabel model='selinux' labelskip='yes'/>
      </source>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>  
    </disk>
    <disk type='file' device='disk'>                                            
      <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/usb-img/usb-1.img'/>
      <target dev='sda' bus='usb'/>                                        <======== no USB bus related address or bus address assigned to usb disk.
      <alias name='usb-disk0'/>                      
    </disk>
...

5. Assign one <address> line to USB disk like scsi disk.

[root@ibm-x3650m3-03 ~]# virsh dumpxml r7
...(snipped)
 <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/usb-img/usb-1.img'/>
      <target dev='sda' bus='usb'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>  =======> added
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/usb-img/usb-2.img'/>
      <target dev='sdb' bus='usb'/>
      <address type='drive' controller='1' bus='0' target='0' unit='0'/>  =======> added
    </disk>
...(snipped)

6. Check the usb controller,the controllers can not be generated automatically.(scsi controllers were generated automatically.)
[root@ibm-x3650m3-03 ~]# virsh dumpxml r7
...(snipped)
 <controller type='scsi' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </controller>
    <controller type='scsi' index='1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
    </controller>
    <controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
...(snipped)

Actual results:
I found all USB disk had been attached to same USB controller(default) automatically, maybe this is default routine. However I want to assign some USB disks to another controller manually but I can't find the entry.

qemu-kvm has provided command line to support it by using "bus" argument.(like: device_add usb-storage,id=my_usb_disk,drive=my_usb_disk,bus=usb.0 )

Expected results:
Libvirt should provide entry to configure this feature, like scsi disk below:

<disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/var/lib/libvirt/images/iscsi_1.img'/>
      <target dev='sda' bus='scsi'/>
      <address type='drive' controller='1' bus='0' target='0' unit='0'/>      <===here
    </disk>
Comment 7 Martin Kletzander 2015-07-22 14:15:39 UTC 
Moreover, the problem here is that we do not generate the address automatically, but we leave it to qemu and then we don't know what address qemu picked.
Comment 8 Martin Kletzander 2015-07-22 14:18:33 UTC 
This is actually the same as Bug 1215968 and Bug 1176772, so I'll mark it as a duplicate.

*** This bug has been marked as a duplicate of bug 1215968 ***
Note You need to log in before you can comment on or make changes to this bug.