[cc: Jesse] Hi folks,
While playing with branch-2.6, I've noticed that something may not be cleaned
properly
in the kernel with openvswitch module; [only] when ovn was configured.
What I observe [below] is that as soon as I configure info used by
ovn-controller to
connect to sb db, I am unable to unload the ovs kernel module.
Any ideas on what commands I could use to further determine what could be
causing
this? I did not try it on master, but suspect the issue exists there as well.
Thanks,
-- flaviof
==
$ lsb_release -sc
trusty
cd ~/ovs.git
./boot.sh && \
./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc \
--enable-ssl --with-linux=/lib/modules/$(uname -r)/build && \
make -j$(nproc) && \
sudo make install ; echo $?
for x in libcrc32c nf_conntrack nf_nat nf_nat_ipv6 nf_nat_ipv4 nf_defrag_ipv4
gre ; do \
sudo modprobe $x ; \
done
sudo insmod ./datapath/linux/openvswitch.ko && \
sudo insmod ./datapath/linux/vport-geneve.ko && \
echo ok
sudo cp ./debian/openvswitch-switch.init /etc/init.d/openvswitch-switch
sudo /etc/init.d/openvswitch-switch start
sudo /usr/share/openvswitch/scripts/ovn-ctl restart_northd
sudo /usr/share/openvswitch/scripts/ovn-ctl restart_controller
#### insert commands that configure conf.db with OVN related commands
#### to make issue happen :/
sudo /usr/share/openvswitch/scripts/ovn-ctl stop_controller
sudo /usr/share/openvswitch/scripts/ovn-ctl stop_northd
sudo /etc/init.d/openvswitch-switch stop
# as you can see there is nothing related to ovs running...
$ ps aux | grep "ov[sn]"
$
$ sudo rmmod vport_geneve
$
# Happy case...
$ # this works fine if commands that configure conf.db with ovn are not used...
$ sudo rmmod openvswitch
$ sudo lsmod | grep openv
$
==
# However, not as nice if conf.db is configured with encaps info:
$ sudo rmmod openvswitch
rmmod: ERROR: Module openvswitch is in use
$ sudo lsmod | grep openv
openvswitch 253098 2
gre 13796 1 openvswitch
nf_defrag_ipv4 12758 2 openvswitch,nf_conntrack_ipv4
nf_nat_ipv4 13263 1 openvswitch
nf_defrag_ipv6 34768 2 openvswitch,nf_conntrack_ipv6
nf_nat_ipv6 13279 1 openvswitch
nf_nat 21841 3 openvswitch,nf_nat_ipv4,nf_nat_ipv6
nf_conntrack 97201 6
openvswitch,nf_nat,nf_nat_ipv4,nf_nat_ipv6,nf_conntrack_ipv4,nf_conntrack_ipv6
libcrc32c 12644 1 openvswitch
$ sudo modprobe --show-depends openvswitch
insmod /lib/modules/3.13.0-95-generic/kernel/lib/libcrc32c.ko
insmod /lib/modules/3.13.0-95-generic/kernel/net/ipv4/gre.ko
insmod /lib/modules/3.13.0-95-generic/kernel/net/ipv4/ip_tunnel.ko
insmod /lib/modules/3.13.0-95-generic/kernel/drivers/net/vxlan.ko
insmod /lib/modules/3.13.0-95-generic/kernel/net/openvswitch/openvswitch.ko
#### commands that configure conf.db with OVN related commands to make rmmod
fail
HOST_IP=$(ip -4 addr show eth0 | grep -oP "(?<=inet ).*(?=/)")
OVN_DB_IP=$HOST_IP
OVN_SB_DB_PORT=${2-6642}
OVN_SB_REMOTE="tcp:${OVN_DB_IP}:${OVN_SB_DB_PORT}"
sudo ovs-vsctl --no-wait set open_vswitch . external-ids:ovn-bridge="br-int"
sudo ovs-vsctl --no-wait set open_vswitch . external-ids:ovn-encap-ip="$HOST_IP"
sudo ovs-vsctl --no-wait set open_vswitch . external-ids:ovn-encap-type="geneve"
sudo ovs-vsctl --no-wait set open_vswitch .
external-ids:ovn-remote="$OVN_SB_REMOTE"
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