Hi Vasiliy,
On Thursday, June 02, 2016 02:29:51 PM Vasiliy Tolstov wrote:
> 2016-06-02 8:13 GMT+03:00 Jim Fehlig <jfehlig@xxxxxxxx>:
> > We've noticed libvirt-tck test 100-apply-verify-host.t failing recently on
> > libvirt.git master and I finally got around to bisecting it to commit
> > b3d06987. I haven't looked at the test in detail, but it appears to
> > expect a broadcast address of 10.1.2.255, however finds an address of
> > 0.0.0.0 after commit b3d06987. I'm not terribly familiar with this code,
> > but the following hunk of b3d06987 looks suspect
>
> Can you share me path where i can find this test?
Before you spend too much time figuring out that test, the problem can be seen
outside the TCK framework by manually creating the network the test uses:
<network>
<name>tck-testnet</name>
<uuid>aadc8920-502a-4774-ac2b-cd382a204d06</uuid>
<forward mode='nat'/>
<bridge name='tck-testbr' stp='on' delay='0' />
<ip address='10.1.2.1' netmask='255.255.255.0'>
<dhcp>
<range start='10.1.2.2' end='10.1.2.254' />
</dhcp>
</ip>
</network>
After creating the network, the TCK test verifies the network was setup
properly by checking the output of iptables, ip, etc... One of these tests
checks the network address and broadcast address for the bridge. The expected
values are 10.1.2.1/24 (IP address) and 10.1.2.255 (broadcast address). Under
the current libvirt code, the broadcast address is not set, so the test fails
to parse the output of `ip -o a` correctly, and the test fails. Checking the
network setup manually shows the missing broadcast address:
# ip a show tck-testbr
82: tck-testbr: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
state DOWN group default qlen 1000
link/ether 52:54:00:ec:41:9e brd ff:ff:ff:ff:ff:ff
inet 10.1.2.1/24 scope global tck-testbr
valid_lft forever preferred_lft forever
If there were a broadcast address, the inet line above should look like:
inet 10.1.2.1/24 brd 10.1.2.255 scope global tck-testbr
ifconfig shows the broadcast address as 0.0.0.0:
#ifconfig
tck-testb Link encap:Ethernet HWaddr 52:54:00:EC:41:9E
inet addr:10.1.2.1 Bcast:0.0.0.0 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
I haven't pulled any LAN traces yet, but the missing/0.0.0.0 broadcast address
does not seem correct.
-Mike
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