After chatting on IRC, #systemd channel, damjan explained this:
https://github.com/systemd/systemd/blob/master/NEWS#L845
So, actually, the following file:
cat /lib/modprobe.d/systemd.conf
disables "extra" dummies, as follows:
--
options bonding max_bonds=0
options dummy numdummies=0
--
Forcing us to explicitly create the dummy devices per demand (I believe,
and I'll try it soon). I guess that it's really time to say goodbye to
"ifupdown / /etc/network/interfaces" approach...
Just for testing, after disabling the dummy line out from that file and
rebooting it, I have the 12 dummies without my ugly workaround via
/etc/rc.local!
See, Jan-Dirk? I thought that I could blame systemd and I got my answer
there!
NOTE: I actually like systemd, okay? :-P
It's just a new way of doing this (Netplan? systemd-networkd directly?),
Jan, you can safely move to Ubuntu! ^_^
Cheers!
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1774731
Title:
Missing "/sys/module/dummy/parameters/" subdir on dummy module
Status in linux package in Ubuntu:
Invalid
Bug description:
Hello,
On Ubuntu 18.04 (fully updated), the following configuration does not
work:
File /etc/modprobe.d/dummy.conf with:
----
options dummy numdummies=12
----
File /etc/modules
----
dummy
----
The module "dummy" is loaded but, there is no 12 dummies NIC cards!
The manual workaround is:
---
rmmod dummy
modprobe dummy numdummies=12
---
I talked on IRC and someone pointed that the dummy module is missing
its "/sys/module/dummy/parameters/" subdir, so, I'm filling this bug
report now.
Cheers!
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k4.15.0-22-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord':
'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer':
'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer':
'amixer'
DistroRelease: Ubuntu 18.04
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
Package: linux (not installed)
ProcEnviron:
TERM=screen
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 qxldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-22-generic
root=UUID=26330e04-49ed-11e8-9cae-525400a53f07 ro
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
RelatedPackageVersions:
linux-restricted-modules-4.15.0-22-generic N/A
linux-backports-modules-4.15.0-22-generic N/A
linux-firmware 1.173.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic uec-images
Uname: Linux 4.15.0-22-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.10.2-1ubuntu1
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-bionic
dmi.modalias:
dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-bionic
dmi.sys.vendor: QEMU
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