Bug 1140085
| Summary: | guest interface which use existing bridge source bridge will disappear after libvirtd restart | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Luyao Huang <lhuang> | |
| Component: | libvirt | Assignee: | Pavel Hrdina <phrdina> | |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | medium | |||
| Version: | 7.1 | CC: | dyuan, jiahu, lcheng, lhuang, mzhan, rbalakri | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | x86_64 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | libvirt-1.2.8-4.el7 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1146310 (view as bug list) | Environment: | ||
| Last Closed: | 2015-03-05 07:44:15 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: | 1146310 | |||
Fixed upstream
commit a71f741ec57634957adcac8a59b1ef27641580ad
Author: Pavel Hrdina <phrdina>
Date: Thu Sep 18 15:06:44 2014 +0200
Fix bug with loading bridge name for active domain during libvirtd start
If you have a bridge network in running domain and libvirtd is restarted
the information about host bridge interface is lost from live xml.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140085
Signed-off-by: Pavel Hrdina <phrdina>
Also found this issue with the latest RHEL6 libvirt,so clone a bug 1146310 for RHEL6. Verify it as follows. The result is expected.
Version:
libvirt-1.2.8-6.el7.x86_64
qemu-kvm-rhev-2.1.2-8.el7.x86_64
qemu-kvm-1.5.3-79.el7.x86_64
Steps:
1.
# virsh net-dumpxml host-bridge
<network>
<name>host-bridge</name>
<uuid>3b251430-0eb4-4670-96e5-9ddd6d0bd90f</uuid>
<forward mode='bridge'/>
<bridge name='br0'/>
</network>
2.
# virsh net-start host-bridge
Network host-bridge started
3.
# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.10604b5cb9e7 no eno1
virbr0 8000.52540093da52 yes virbr0-nic
4. vnet0
# virsh list --all
Id Name State
----------------------------------------------------
19 a running
5.
# virsh attach-interface a network host-bridge
Interface attached successfully
6.
# virsh dumpxml a | grep interface -A10
<interface type='network'>
<mac address='52:54:00:bb:25:71'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='rtl8139'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='52:54:00:22:07:a9'/>
<source bridge='br0'/>
<target dev='vnet1'/>
<model type='rtl8139'/>
<alias name='net1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</interface>
...
7.
# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.10604b5cb9e7 no eno1
vnet1
virbr0 8000.52540093da52 yes virbr0-nic
vnet0
8.
# service libvirtd restart
Redirecting to /bin/systemctl restart libvirtd.service
9.
# virsh dumpxml a | grep interface -A10
<interface type='network'>
<mac address='52:54:00:bb:25:71'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='rtl8139'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='52:54:00:22:07:a9'/>
<source bridge='br0'/>
<target dev='vnet1'/>
<model type='rtl8139'/>
<alias name='net1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</interface>
...
10.
# virsh domiflist a
Interface Type Source Model MAC
-------------------------------------------------------
vnet0 network default rtl8139 52:54:00:bb:25:71
vnet1 bridge br0 rtl8139 52:54:00:22:07:a9
11.
# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.10604b5cb9e7 no eno1
vnet1
virbr0 8000.52540093da52 yes virbr0-nic
vnet0
12.
# virsh detach-interface a bridge 52:54:00:22:07:a9
Interface detached successfully
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://rhn.redhat.com/errata/RHSA-2015-0323.html |
Description of problem: guest interface which use existing bridge source bridge will disappear after libvirtd restart Version-Release number of selected component (if applicable): libvirt-1.2.8-1.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.prepare a virtual network which use host exist bridge # virsh net-dumpxml host-bridge <network connections='2'> <name>host-bridge</name> <uuid>3b251430-0eb4-4670-96e5-9ddd6d0bd90f</uuid> <forward mode='bridge'/> <bridge name='br13'/> </network> 2.# brctl show bridge name bridge id STP enabled interfaces br13 8000.525400094d3f no br13-nic 3.# virsh net-start host-bridge Network host-bridge started 4.prepare a running guest # virsh list --all Id Name State ---------------------------------------------------- 13 test3 running 5.# virsh attach-interface test3 network host-bridge Interface attached successfully 6.# virsh dumpxml test3 <interface type='bridge'> <mac address='52:54:00:d3:16:22'/> <source bridge='br13'/> <target dev='vnet2'/> <model type='rtl8139'/> <alias name='net2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> </interface> 7.# brctl show bridge name bridge id STP enabled interfaces br13 8000.525400094d3f no br13-nic vnet2 8.# service libvirtd restart Redirecting to /bin/systemctl restart libvirtd.service 9.# virsh dumpxml test3 <interface type='bridge'> <mac address='52:54:00:d3:16:22'/> <target dev='vnet2'/> <model type='rtl8139'/> <alias name='net2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> </interface> 10.# virsh domiflist test3 Interface Type Source Model MAC ------------------------------------------------------- vnet2 bridge - rtl8139 52:54:00:d3:16:22 11. # brctl show bridge name bridge id STP enabled interfaces br13 8000.525400094d3f no br13-nic vnet2 12.some virsh command cannot be used #virsh detach-interface test3 network 52:54:00:d3:16:22 error: Failed to detach interface error: internal error: No <source> 'bridge' attribute specified with <interface type='bridge'/> Actual results: guest interface which use existing bridge source bridge will disappear after libvirtd restart Expected results: source bridge should not disappear after libvirtd restart Additional info: