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Description of problem:
domifaddr should not query non-existing file for interface from host bridge network
Version-Release number of selected component (if applicable):
libvirt-4.5.0-2.el7.x86_64
How reproducible:
100%
Steps to Reproduce:
1.Create a host bridge:
# virsh iface-bridge --interface eno1 --bridge br0 --no-stp
2.Create a network with forward bridge=br0
# virsh net-dumpxml host-bridge
<network>
<name>host-bridge</name>
<uuid>7a7fd2e0-ab52-48ce-863f-e1178a6e5dd7</uuid>
<forward mode='bridge'/>
<bridge name='br0'/>
</network>
3.Start a guest with interface from the host-bridge network:
<interface type='bridge'>
<mac address='52:54:00:90:c8:27'/>
<source network='host-bridge' bridge='br0'/>
<target dev='vnet4'/>
<model type='rtl8139'/>
<alias name='net6'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x14' function='0x0'/>
</interface>
4. Query guest interface address by domifaddr:
# virsh domifaddr $guest
5. Check syslog.
Jul 11 18:07:27 fjin-4-140 libvirtd: 2018-07-11 10:07:27.596+0000: 27245: error : virFileReadAll:1460 : Failed to open file '/var/lib/libvirt/dnsmasq/br0.status': No such file or directory
Actual results:
As step 5
Expected results:
No error, libvirt should not check file br0.status
Additional info:
Same for openvswitch
Comment 5yalzhang@redhat.com
2018-08-01 06:34:43 UTC
test on libvirt-4.5.0-5.virtcov.el7.x86_64, the bug is fixed.
# virsh domiflist rhel
Interface Type Source Model MAC
-------------------------------------------------------
net_target network default rtl8139 52:54:00:d5:e3:68
user_target user - rtl8139 52:54:00:9e:c8:e9
udp_target udp - rtl8139 52:54:00:22:c9:42
mcast_target mcast - rtl8139 52:54:00:93:db:5e
bridge_target bridge br0 rtl8139 52:54:00:1e:a3:ae
# virsh domifaddr rhel
Name MAC address Protocol Address
-------------------------------------------------------------------------------
net_target 52:54:00:d5:e3:68 ipv4 192.168.122.80/24
# virsh domifaddr rhel bridge_target
Name MAC address Protocol Address
-------------------------------------------------------------------------------
Check log file and found no error in libvirtd.log
Also test bridge type interface connected to ovs bridge, no error like comment 0.
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/RHSA-2018:3113
Description of problem: domifaddr should not query non-existing file for interface from host bridge network Version-Release number of selected component (if applicable): libvirt-4.5.0-2.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Create a host bridge: # virsh iface-bridge --interface eno1 --bridge br0 --no-stp 2.Create a network with forward bridge=br0 # virsh net-dumpxml host-bridge <network> <name>host-bridge</name> <uuid>7a7fd2e0-ab52-48ce-863f-e1178a6e5dd7</uuid> <forward mode='bridge'/> <bridge name='br0'/> </network> 3.Start a guest with interface from the host-bridge network: <interface type='bridge'> <mac address='52:54:00:90:c8:27'/> <source network='host-bridge' bridge='br0'/> <target dev='vnet4'/> <model type='rtl8139'/> <alias name='net6'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x14' function='0x0'/> </interface> 4. Query guest interface address by domifaddr: # virsh domifaddr $guest 5. Check syslog. Jul 11 18:07:27 fjin-4-140 libvirtd: 2018-07-11 10:07:27.596+0000: 27245: error : virFileReadAll:1460 : Failed to open file '/var/lib/libvirt/dnsmasq/br0.status': No such file or directory Actual results: As step 5 Expected results: No error, libvirt should not check file br0.status Additional info: Same for openvswitch