I believe this is systemd intentional to not change bond parameters if
the bond already exists. It is assumed that something else has already
created the bond, and thus networkd should not be "updating" the params.
Despite networkd creating the bond in the first place...
** Changed in: systemd (Ubuntu)
Status: New => Won't Fix
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https://bugs.launchpad.net/bugs/1746419
Title:
bond parameters are not changed by 'netplan apply'
Status in nplan package in Ubuntu:
New
Status in systemd package in Ubuntu:
Won't Fix
Bug description:
I have a yaml file as follows:
network:
version: 2
ethernets:
bonddevs:
match:
name: ens[78]
bonds:
bond0:
interfaces: [bonddevs]
parameters:
mode: active-backup
mii-monitor-interval: 1
addresses:
- 10.10.10.1/24
Say I decide that 1s is too frequent for the MII interval, and I want to
change the interval to 2s.
If I change that in the yaml, then run
# netplan generate
# netplan apply
# cat /proc/net/bonding/bond0|grep "MII Polling Interval (ms)"
MII Polling Interval (ms): 1000
In other words, the change has not been applied.
Running netplan --debug apply prints:
DEBUG:device bond0 operstate is up, not replugging
So I wondered if bringing the bond down would help. It does not:
# ip link set dev bond0 down
# netplan apply
# cat /proc/net/bonding/bond0|grep "MII Polling Interval (ms)"
MII Polling Interval (ms): 1000
However, deleting the link works:
# ip link del dev bond0
# netplan apply
# cat /proc/net/bonding/bond0|grep "MII Polling Interval (ms)"
MII Polling Interval (ms): 2000
This is counter-intuitive behaviour.
Ideally, I would like a regular netplan apply to work without deleting the
bond.
However, a changed to the docs to make this clear would be OK.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: nplan 0.32~17.10.1
ProcVersionSignature: User Name 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
Date: Wed Jan 31 05:47:42 2018
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: nplan
UpgradeStatus: No upgrade log present (probably fresh install)
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