[ovs-discuss] vport-stt.ko issue

Amru OM sdn.innovation at gmail.com
Mon Jul 18 10:03:02 UTC 2016


Greetings,



I tried to load the STT module (vport-stt.ko), which is included with OVS
2.5 distribution, in order to configure STT overlay tunnels between virtual
machines located in different hosts. However, when I insert vport-stt.ko
using “insmod”:

insmod datapath/linux/vport-stt.ko



I got this error

insmod: ERROR: could not insert module datapath/linux/vport-stt.ko: Unknown
symbol in module



Then I tried “modprobe vport-stt”, but I got a similar error:

modprobe: ERROR: could not insert 'vport_stt': Unknown symbol in module, or
unknown parameter (see dmesg)



Running "dmesg tail", I got the following:



[89896.077397] vport_stt: Unknown symbol ovs_netdev_link (err 0)

[89896.077421] vport_stt: Unknown symbol ovs_netdev_tunnel_destroy (err 0)

[89896.077425] vport_stt: disagrees about version of symbol
ovs_tunnel_get_egress_info

[89896.077428] vport_stt: Unknown symbol ovs_tunnel_get_egress_info (err
-22)

[89896.077440] vport_stt: Unknown symbol ovs_stt_dev_create_fb (err 0)

[89896.077462] vport_stt: Unknown symbol __ovs_vport_ops_register (err 0)

[89896.077467] vport_stt: disagrees about version of symbol
ovs_vport_ops_unregister

[89896.077469] vport_stt: Unknown symbol ovs_vport_ops_unregister (err -22)

[89896.077474] vport_stt: disagrees about version of symbol ovs_vport_alloc

[89896.077476] vport_stt: Unknown symbol ovs_vport_alloc (err -22)

[89896.077479] vport_stt: disagrees about version of symbol ovs_vport_free

[89896.077481] vport_stt: Unknown symbol ovs_vport_free (err -22)

[89896.077494] vport_stt: Unknown symbol ovs_stt_xmit (err 0)



Running "modinfo vport-stt.ko", I got:



filename:       /root/openvswitch-2.5.0/datapath/linux/vport-stt.ko

alias:          vport-type-106

license:        GPL

description:    OVS: STT switching port

rhelversion:    7.2

srcversion:     2D42FA67BB7A1A04E5E0A62

depends:        openvswitch

vermagic:       3.10.0-327.13.1.el7.x86_64 SMP mod_unload modversions



Note, as vport-stt.ko depends on openvswitch.ko, I loaded openvswitch.ko before
trying to insert vport-stt.ko, but it did not fix the problem.



I was able to load the other modules such as vport-gre.ko, vport-vxlan.ko,
and vport-geneve.ko, but not vport-stt.ko



[root at sig-102 ~]# lsmod | grep switch

openv*switch*            84543  3 vport_gre,vport_vxlan,vport_geneve

libcrc32c              12644  2 xfs,openv*switch*



The OVS is installed on CentOS 7.2.1511 (kernel:
3.10.0-327.13.1.el7.x86_64).



Please advise me on how to tackle this *problem*,

Thanks in advance,

Amru
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