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Bug 1445231 - Hotplug of 'user' type interface is not supported any more unexpectedly
Summary: Hotplug of 'user' type interface is not supported any more unexpectedly
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.4
Hardware: x86_64
OS: Linux
high
medium
Target Milestone: rc
: ---
Assignee: Michal Privoznik
QA Contact: yalzhang@redhat.com
URL:
Whiteboard:
Depends On: 1420668
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-04-25 10:00 UTC by Jaroslav Reznik
Modified: 2017-05-25 15:37 UTC (History)
11 users (show)

Fixed In Version: libvirt-2.0.0-10.el7_3.9
Doc Type: Bug Fix
Doc Text:
Cause: Due to a rework of code we mistakenly forbade hotplug of user type interfaces. Consequence: Users were unable to hotplug user type interfaces. This is a regression. Fix: Simple. Result: Users now able to hotplug their interfaces again.
Clone Of: 1420668
Environment:
Last Closed: 2017-05-25 15:37:01 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2017:1304 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2017-05-25 19:32:14 UTC

Description Jaroslav Reznik 2017-04-25 10:00:48 UTC 
This bug has been copied from bug #1420668 and has been proposed
to be backported to 7.3 z-stream (EUS).
Comment 5 Michal Privoznik 2017-04-25 15:51:28 UTC 
To POST:

http://post-office.corp.redhat.com/archives/rhvirt-patches/2017-April/msg00444.html

Scratch build:

https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=13080389
Comment 7 yalzhang@redhat.com 2017-05-05 10:12:26 UTC 
Test on below packages:
libvirt-2.0.0-10.el7_3.9.x86_64
qemu-kvm-rhev-2.6.0-28.el7_3.9.x86_64

For unprivileged user and root user, test hotplug by attach-device, hotunplug by detach-device and detach-interface, the result is as expected, set this bug to be verified.


----------------unprivileged user--------------------
1. hotplug
$ virsh start rhel7
Domain rhel7 started

$ cat user.xml
<interface type='user'>
  <mac address="00:11:22:33:44:55"/>
  </interface>

$ virsh attach-device rhel7 user.xml
Device attached successfully

$ virsh dumpxml rhel7 | grep /interface -B5
   <interface type='user'>
      <mac address='00:11:22:33:44:55'/>
      <model type='rtl8139'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>

2. log in the guest and check the network function works well.

3. hotunplug
$ virsh detach-device rhel7 user.xml
Device detached successfully
$ virsh dumpxml rhel7 | grep /interface -B9

4. detach the interface by detach-interface
$ virsh attach-device rhel7 user.xml 
Device attached successfully
$ virsh dumpxml rhel7 | grep /interface -B5
   <interface type='user'>
      <mac address='00:11:22:33:44:55'/>
      <model type='rtl8139'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </interface>
$ virsh detach-interface rhel7 user 00:11:22:33:44:55
Interface detached successfully
$ virsh dumpxml rhel7 | grep /interface


-------------------root user------------------
1.
# virsh start rhel7.3
Domain rhel7.3 started

# cat user.xml
<interface type='user'/>

# virsh attach-device rhel7.3 user.xml
Device attached successfully

# virsh dumpxml rhel7.3 | grep /interface -B5 
    <interface type='user'>
      <mac address='52:54:00:20:70:53'/>
      <model type='rtl8139'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
# virsh dumpxml rhel7.3 | grep /interface -B5 > user1.xml
# virsh detach-device rhel7.3  user1.xml
Device detached successfully

# virsh dumpxml rhel7.3 | grep /interface

2. detach by detach-interface
# cat user.xml
   <interface type='user'>
      <mac address='52:54:00:a1:55:a6'/>
      <model type='virtio'/>
    </interface>
# virsh dumpxml rhel7.3 | grep /interface -B5
    <interface type='user'>
      <mac address='52:54:00:a1:55:a6'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </interface>

# virsh detach-interface rhel7.3 user 52:54:00:a1:55:a6
Interface detached successfully

# virsh dumpxml rhel7.3 | grep /interface
Comment 9 errata-xmlrpc 2017-05-25 15:37:01 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:1304
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