Public bug reported:
We have multiple systems with two bonds (bond0 & bond1) and with
multiple vlan and bridge interfaces. Any effort to modify the
interfaces results in a partially or completely broken network
environment.
Situation 1:
When I manually try to take an interface down and bring it up again. the master
takes down the first slave.
# sudo ifenslave bond0.3004 eno1 eno2
I get:
sh: echo: I/O error
eno1: could not add interface
it then immediately takes down the first slave interface. In this case
eno1. I can bring it up again with sudo ip link set eno1 up. This is
consistently reproducible.
Situation 2:
Issuing sudo systemctl restart networking networking goes down hard. On
investigation I see that ifensalve is trying to modify bond interface
configuration by adding a config to a directory that does not exist.
/sys/class/net/bond0.3004/bonding does not exist.
Jun 15 14:15:15 ewr1-h002 sh[5290]: /etc/network/if-pre-up.d/ifenslave:
65: /etc/network/if-pre- up.d/ifenslave: cannot create
/sys/class/net/bond0.3004/bonding/miimon: Directory nonexistent
Jun 15 14:15:15 ewr1-h002 sh[5290]: /etc/network/if-pre-up.d/ifenslave:
65: /etc/network/if-pre-up.d/ifenslave: cannot create
/sys/class/net/bond0.3004/bonding/mode: Directory nonexistent
Jun 15 14:15:15 ewr1-h002 sh[5290]: /etc/network/if-pre-up.d/ifenslave:
65: /etc/network/if-pre-up.d/ifenslave: cannot create
/sys/class/net/bond0.3004/bonding/lacp_rate: Directory nonexistent
Jun 15 14:16:15 ewr1-h002 sh[5290]: cat:
/sys/class/net/bond0.3004/bonding/slaves: No such file or directory
My Config
/etc/network/interfaces.d/bond0.cfg
auto eno1
iface eno1 inet manual
bond-master bond0
auto eno2
iface eno2 inet manual
bond-master bond0
auto bond0
iface bond0 inet manual
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto bond0.3002
iface bond0.3002 inet manual
vlan-raw-device bond0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto br-net2
iface br-net2 inet static
address 10.1.32.11
netmask 255.255.255.0
bridge_ports bond0.3002
bridge_stp off
bridge_fd 0
bridge_maxwait 0
auto bond0.3003
iface bond0.3003 inet manual
vlan-raw-device bond0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto br-net1
iface br-net1 inet static
address 10.1.48.11
netmask 255.255.255.0
gateway 10.1.48.1
bridge_ports bond0.3003
bridge_stp off
bridge_fd 0
bridge_maxwait 0
auto bond0.3004
iface bond0.3004 inet static
vlan-raw-device bond0
address 10.1.80.11
netmask 255.255.255.0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
iface bond0.3005 inet manual
vlan-raw-device bond0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto br-net3
iface br-net3 inet static
address 10.1.96.11
netmask 255.255.255.0
bridge_ports bond0.3005
bridge_stp off
bridge_fd 0
bridge_maxwait 0
auto bond0.3100
iface bond0.3100 inet manual
vlan-raw-device bond0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto br-net4
iface br-net4 inet static
address 10.1.112.11
netmask 255.255.255.0
bridge_ports bond0.3100
bridge_stp off
bridge_fd 0
bridge_maxwait 0
/etc/network/interfaces.d/bond1.cfg
auto enp131s0f0
iface enp131s0f0 inet manual
bond-master bond1
auto enp131s0f1
iface enp131s0f1 inet manual
bond-master bond1
auto bond1
iface bond1 inet manual
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto bond1.3000
iface bond1.3000 inet static
vlan-raw-device bond1
address 10.1.128.11
netmask 255.255.255.0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
auto bond1.3001
iface bond1.3001 inet static
vlan-raw-device bond1
address 10.1.64.11
netmask 255.255.255.0
bond-mode 802.3ad
bond-miimon 100
bond-lacp-rate 1
bond-slaves all
** Affects: ifenslave (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1699595
Title:
Post-boot manipulation of network possible results in outage with
ifenslave bonding
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