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Bug 1591670

Summary: Missing source path attribute for char device
Product: Red Hat Enterprise Linux 7 Reporter: Xiaodai Wang <xiaodwan>
Component: virt-managerAssignee: Pavel Hrdina <phrdina>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.6CC: jsuchane, juzhou, mxie, mzhan, phrdina, tzheng
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: virt-manager-1.5.0-2.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1591674 (view as bug list) Environment:
Last Closed: 2019-08-06 13:08:01 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1591674    
Attachments:
Description Flags
vit clone log none

Description Xiaodai Wang 2018-06-15 09:12:53 UTC 
Description of problem:
Missing source path attribute for char device

Version-Release number of selected component (if applicable):
virt-manager-1.5.0-1.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1. Prepare a guest with below unix channel.
  <channel type='unix'>
    <source mode='bind' path='/tmp/guestfwd'/>
    <target type='guestfwd' address='10.0.2.1' port='4600'/>
  </channel>
2. Clone the guest.
# virt-clone -o rhel7.5vnc --debug --auto-clone

Actual results:
[Fri, 15 Jun 2018 16:11:17 virt-clone 22262] DEBUG (cloner:459) Starting duplicate.
[Fri, 15 Jun 2018 16:11:17 virt-clone 22262] DEBUG (cloner:477) Duplicate failed: internal error: Missing source path attribute for char device
[Fri, 15 Jun 2018 16:11:17 virt-clone 22262] DEBUG (cli:317)   File "/usr/share/virt-manager/virt-clone", line 227, in <module>
    fail(main_e)
  File "/usr/share/virt-manager/virtinst/cli.py", line 317, in fail
    logging.debug("".join(traceback.format_stack()))

[Fri, 15 Jun 2018 16:11:17 virt-clone 22262] ERROR (cli:318) internal error: Missing source path attribute for char device
[Fri, 15 Jun 2018 16:11:17 virt-clone 22262] DEBUG (cli:320) 
Traceback (most recent call last):
  File "/usr/share/virt-manager/virt-clone", line 221, in <module>
    sys.exit(main())
  File "/usr/share/virt-manager/virt-clone", line 212, in main
    design.start_duplicate(cli.get_meter())
  File "/usr/share/virt-manager/virtinst/cloner.py", line 469, in start_duplicate
    dom = self.conn.defineXML(self.clone_xml)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3676, in defineXML
    if ret is None:raise libvirtError('virDomainDefineXML() failed', conn=self)
libvirtError: internal error: Missing source path attribute for char device


Expected results:
The clone should success.

Additional info:
1) The difference of original and clone xml.
75,77c75,77
<     <channel type='unix'>
<       <source mode='bind' path='/tmp/guestfwd'/>
<       <target type='guestfwd' address='10.0.2.1' port='4600'/>
---
>     <channel type="unix">
>       <source mode="bind"/>
>       <target type="guestfwd" address="10.0.2.1" port="4600"/>
Comment 2 Xiaodai Wang 2018-06-15 09:13:38 UTC 
Created attachment 1451832 [details]
vit clone log
Comment 3 Pavel Hrdina 2018-06-29 06:53:34 UTC 
Upstream commit:

commit 931936a328d22413bb663e0e21d2f7bb111dbd7c
Author: Pavel Hrdina <phrdina>
Date:   Thu Jun 28 16:18:43 2018 +0200

    virtinst: Remove only auto-generated channel source path
Comment 5 zhoujunqin 2018-07-03 07:05:55 UTC 
Hi,Pavel

Is this bug targeted for rhel7.6 since I see rhel-7.6.0+ flag is set, if so when will you plan to build the new virt-manager package including fix of this bug,thanks.

BR,
juzhou.
Comment 12 ysu@redhat.com 2019-04-30 07:01:50 UTC 
I can reproduce this issue with package:
virt-manager-1.5.0-1.el7.noarch

Then try to verify this bug with new build:
virt-manager-1.5.0-3.el7.noarch
virt-install-1.5.0-3.el7.noarch
libvirt-4.5.0-12.el7.x86_64
qemu-kvm-rhev-2.12.0-26.el7.x86_64
libvirt-python-4.5.0-1.el7.x86_64

Steps:


1. Prepare a guest with below unix channel.
  <channel type='unix'>
    <source mode='bind' path='/tmp/guestfwd'/>
    <target type='guestfwd' address='10.0.2.1' port='4600'/>
  </channel>
2. Clone the guest.
 #virt-clone -o rhel7.6 --debug --auto-clone

Allocating 'rhel7.6.qcow2'                        | 7.0 GB  03:57     
Clone 'rhel7.6-clone' created successfully.
3 Check unix channel of new guest in xml file.
 #virsh dumpxml rhel7.6-clone | grep channel

<channel type='unix'>
      <source mode='bind' path='/tmp/guestfwd'/>
      <target type='guestfwd' address='10.0.2.1' port='4600'/>
</channel>

Results:
 1.  The clone finishes with source path on xml file and new guest starts successfully.
 2.  The none auto-generated channel source path '/tmp/guestfwd' keeps during cloning.

 I move this bug from ON_QA to VERIFIED based on above testing.
Comment 13 ysu@redhat.com 2019-04-30 07:02:49 UTC 
I can reproduce this issue with package:
virt-manager-1.5.0-1.el7.noarch

Then try to verify this bug with new build:
virt-manager-1.5.0-3.el7.noarch
virt-install-1.5.0-3.el7.noarch
libvirt-4.5.0-12.el7.x86_64
qemu-kvm-rhev-2.12.0-26.el7.x86_64
libvirt-python-4.5.0-1.el7.x86_64

Steps:


1. Prepare a guest with below unix channel.
  <channel type='unix'>
    <source mode='bind' path='/tmp/guestfwd'/>
    <target type='guestfwd' address='10.0.2.1' port='4600'/>
  </channel>
2. Clone the guest.
 #virt-clone -o rhel7.6 --debug --auto-clone

Allocating 'rhel7.6.qcow2'                        | 7.0 GB  03:57     
Clone 'rhel7.6-clone' created successfully.
3 Check unix channel of new guest in xml file.
 #virsh dumpxml rhel7.6-clone | grep channel

<channel type='unix'>
      <source mode='bind' path='/tmp/guestfwd'/>
      <target type='guestfwd' address='10.0.2.1' port='4600'/>
</channel>

Results:
 1.  The clone finishes with source path on xml file and new guest starts successfully.
 2.  The none auto-generated channel source path '/tmp/guestfwd' keeps during cloning.

 I move this bug from ON_QA to VERIFIED based on above testing.
Comment 15 errata-xmlrpc 2019-08-06 13:08:01 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-2019:2232