Hello,
I'm have a problem with OVN.
I'm using a build version of master, last commit was:
a36bb33445acdbc5bfc30ecab8408dac9a99913e
I have ovn up and running, but it looks like it is generating the ovs flows
incorrectly.
(you can fast forward to the PROBLEMS section at the bottom of the email)
I have a ovs/ovn env with one vm acting as a switch (a simple setup just to
demonstrate the problem), two nics that need to be bridged:
VM
------------------
| |
| ovn/ovs |
<--ens8 <----------->ens9 -->
| |
------------------
(keeping it as simple as possible to make it less complicated)
I'm setting it up:
ovn-nbctl lswitch-add sw0
ovn-nbctl lport-add sw0 lport8
ovn-nbctl lport-add sw0 lport9
ovs-vsctl add-port br-int ens8 -- set Interface ens8
external_ids:iface-id=lport8
ovs-vsctl add-port br-int ens9 -- set Interface ens9
external_ids:iface-id=lport9
ovs-ofctl show br-int
shows:
26(ens8): addr:52:54:00:ab:40:83
27(ens9): addr:52:54:00:47:15:4f
ovs-ofctl dump-flows br-int:
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=13.930s, table=0, n_packets=17, n_bytes=1020, idle_age=0,
priority=100,in_port=26
actions=load:0x1->NXM_NX_REG5[],load:0x5->OXM_OF_METADATA[],load:0x1->NXM_NX_REG6[],resubmit(,16)
cookie=0x0, duration=13.919s, table=0, n_packets=7, n_bytes=420, idle_age=1,
priority=100,in_port=27
actions=load:0x2->NXM_NX_REG5[],load:0x5->OXM_OF_METADATA[],load:0x2->NXM_NX_REG6[],resubmit(,16)
cookie=0x0, duration=13.942s, table=16, n_packets=0, n_bytes=0, idle_age=13,
priority=100,metadata=0x5,dl_src=01:00:00:00:00:00/01:00:00:00:00:00
actions=drop
cookie=0x0, duration=13.942s, table=16, n_packets=0, n_bytes=0, idle_age=13,
priority=100,metadata=0x5,vlan_tci=0x1000/0x1000 actions=drop
cookie=0x0, duration=13.942s, table=16, n_packets=17, n_bytes=1020,
idle_age=0, priority=50,reg6=0x1,metadata=0x5 actions=resubmit(,17)
cookie=0x0, duration=13.939s, table=16, n_packets=7, n_bytes=420, idle_age=1,
priority=50,reg6=0x2,metadata=0x5 actions=resubmit(,17)
cookie=0x0, duration=13.942s, table=17, n_packets=24, n_bytes=1440,
idle_age=0, priority=0,metadata=0x5 actions=resubmit(,18)
cookie=0x0, duration=13.943s, table=18, n_packets=24, n_bytes=1440,
idle_age=0, priority=0,metadata=0x5 actions=resubmit(,19)
cookie=0x0, duration=13.942s, table=19, n_packets=24, n_bytes=1440,
idle_age=0,
priority=100,metadata=0x5,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00
actions=load:0xffff->NXM_NX_REG7[],resubmit(,32)
cookie=0x0, duration=13.930s, table=33, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg7=0x1,metadata=0x5 actions=load:0x1->NXM_NX_REG5[],resubmit(,34)
cookie=0x0, duration=13.931s, table=33, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg7=0xffff,metadata=0x5
actions=load:0x2->NXM_NX_REG5[],load:0x2->NXM_NX_REG7[],resubmit(,34),load:0x1->NXM_NX_REG5[],load:0x1->NXM_NX_REG7[],resubmit(,34),load:0xffff->NXM_NX_REG7[]
cookie=0x0, duration=13.919s, table=33, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg7=0x2,metadata=0x5 actions=load:0x2->NXM_NX_REG5[],resubmit(,34)
cookie=0x0, duration=13.930s, table=34, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg6=0x1,reg7=0x1,metadata=0x5 actions=drop
cookie=0x0, duration=13.919s, table=34, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg6=0x2,reg7=0x2,metadata=0x5 actions=drop
cookie=0x0, duration=13.919s, table=48, n_packets=0, n_bytes=0, idle_age=13,
priority=0,metadata=0x5 actions=resubmit(,49)
cookie=0x0, duration=13.919s, table=49, n_packets=0, n_bytes=0, idle_age=13,
priority=0,metadata=0x5 actions=resubmit(,50)
cookie=0x0, duration=13.919s, table=50, n_packets=0, n_bytes=0, idle_age=13,
priority=100,metadata=0x5,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00
actions=resubmit(,64)
cookie=0x0, duration=13.919s, table=50, n_packets=0, n_bytes=0, idle_age=13,
priority=50,reg7=0x1,metadata=0x5 actions=resubmit(,64)
cookie=0x0, duration=13.919s, table=50, n_packets=0, n_bytes=0, idle_age=13,
priority=50,reg7=0x2,metadata=0x5 actions=resubmit(,64)
cookie=0x0, duration=13.930s, table=64, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg7=0x1,metadata=0x5 actions=output:26
cookie=0x0, duration=13.919s, table=64, n_packets=0, n_bytes=0, idle_age=13,
priority=100,reg7=0x2,metadata=0x5 actions=output:27
=============================
PROBLEMS:
Now there are multiple problems with the generated flows:
TABLE 19: filter dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 does not include my
ports and drops my traffic
TABLE 19: resubmits to TABLE 32, but TABLE 32 does not exist
TABLE 33: looks like this does not assing REGs correctly (I had to replace it
to make it work, althought I am not really sure what the exact problem here is)
TABLE 34: only contains DROP actions
TABLE 64: output ports are incorrect, reg7=0x1 should have output:27 and
reg7=0x2 should have output:26
After fixing the above manually, it starts working.
Can you please advise?
Thanks,
Marcin
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