[Bug 1924794] Re: Getting error "ipconfig: no devices to configure" while trying to autoinstall in a VLAN env on s390x

[Frank Heimes]

Yes, I can confirm that autoinstall of an s390x system, where the qeth
device is attached to a VLAN (in my case an LPAR system) works with the
updated initramfs that is included in the impish image with timestamp
20210511.

I've attached the entire console log.

Looks good - many thx!

** Attachment added: "impish - boot messages - s1lp14 - 12.05.2021.txt"
   https://bugs.launchpad.net/ubuntu-z-systems/+bug/1924794/+attachment/5496550/+files/impish%20-%20boot%20messages%20-%20s1lp14%20-%2012.05.2021.txt

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Title:
  Getting error "ipconfig: no devices to configure" while trying to
  autoinstall in a VLAN env on s390x

Status in initramfs-tools:
  Fix Committed
Status in subiquity:
  Invalid
Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in casper package in Ubuntu:
  Invalid

Bug description:
  Trying to autoinstall on a LPAR (that is connected to a VLAN
  environment) and using the 21.04 image from today (time stamp April
  16th) fails and to boot ends up with the following error message:

  
  BusyBox v1.30.1 (Ubuntu 1:1.30.1-6ubuntu2) built-in shell (ash)
  Enter 'help' for a list of built-in commands.
   
  (initramfs) [6n
  ip: SIOCGIFFLAGS: No such device
  ip: can't find device 'encc000'
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  ipconfig: encc000.2653: SIOCGIFINDEX: No such device
  ipconfig: no devices to configure
  no search or nameservers found in /run/net-encc000.2653.conf /run/net-*.conf /ru
  n/net6-*.conf
  Connecting to installserver:80 (installserver:80)
  wget: can't connect to remote host (installserver): Network is unreachable
  Unable to find a live file system on the network

  So the network device encc000 and it related encc000.2653 is not
  automatically activated/enabled like it was in the past.

  It worked in the past with the same config I used today 
  ip=10.245.236.14::10.245.236.1:255.255.255.0:hostname:encc000.2653:none:10.245.236.1 vlan=encc000.2653:encc000 url=http://installserver:80/ubuntu-live-server-21.04/hirsute-live-server-s390x.iso autoinstall ds=nocloud-net;s=http://installserver:80/autoinstall/hostname/ --- quiet

  With "worked in the past" I mean it's already a while ago when I tried
  it last time - right now it does not seem to work with 21.04 and
  20.04.2 - BUT only on this particular environment where I have to
  specify the VLAN as kernel arg ("parm-file").

  It works in a different non VLAN environments (for example in a z/VM
  guest environment where I do NOT have to specify the VLAN at the
  autoistall config, since the VLAN is handled there by the z/VM
  vSwitch).

  Doing an interactive installation on this particular LPAR (incl.
  specifying the VLAN id) works fine!

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