*** This bug is a duplicate of bug 1924794 ***
https://bugs.launchpad.net/bugs/1924794
This is an issue that got already identified and reported (late in the cycle)
during 21.04 testing and is described at LP#1924794 in more detail.
It was unfortunately too late to get it fixed in time for 21.04 GA,
but you will find a fixed initramfs file in LP#1924794 comment #10 that needs
to be used as a replacement for the initfamfs file that is shipped by the ISO
in /boot.
The fix is already included in Impish, too.
Hence I'm marking this LP bug as a duplicate of LP#1924794.
** Changed in: linux (Ubuntu)
Assignee: Skipper Bug Screeners (skipper-screen-team) => (unassigned)
** Changed in: ubuntu-z-systems
Status: New => Fix Released
** Package changed: linux (Ubuntu) => initramfs-tools (Ubuntu)
** Changed in: initramfs-tools (Ubuntu)
Status: New => Fix Released
** This bug has been marked a duplicate of bug 1924794
Getting error "ipconfig: no devices to configure" while trying to
autoinstall in a VLAN env on s390x
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https://bugs.launchpad.net/bugs/1929825
Title:
[Ubuntu 21.04] OSA Device doesn't get enabled if a vlan is specified
on the kernel cmdline for the installer
Status in Ubuntu on IBM z Systems:
Fix Released
Status in initramfs-tools package in Ubuntu:
Fix Released
Bug description:
The OSA Device doesn't get enabled if a vlan is specified on the
kernel cmdline for the installer.
with the cmdline
`ip=10.1.8.74::10.1.10.1:255.255.252.0::enc800.300:none nameserver=10.1.9.101
vlan=enc800.300:enc800
url=http://10.1.9.101:1002/iso/ubuntu-21.04-live-server-s390x.iso quiet ---`
the boot fails with this message and drops to a shell:
```
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 'enc800'
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
ipconfig: enc800.300: SIOCGIFINDEX: No such device
ipconfig: no devices to configure
no search or nameservers found in /run/net-enc800.300.conf /run/net-*.conf
/run/
net6-*.conf
Connecting to 10.1.9.101:1002 (10.1.9.101:1002)
wget: can't connect to remote host (10.1.9.101): Network is unreachable
Unable to find a live file system on the network
```
It the zdev 800 doesn't get enabled.
```
ip addr
1: lo: <LOOPBACK> mtu 65536 qdisc noop qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
(initramfs) [6n
lszdev | grep 0.0.0800
qeth 0.0.0800:0.0.0801:0.0.0802 no no
```
But I can enable it manually:
```
chzdev -e 800
QETH device 0.0.0800:0.0.0801:0.0.0802 configured
Note: The initial RAM-disk must be updated for these changes to take effect:
- QETH device 0.0.0800:0.0.0801:0.0.0802
A manual update of the initial RAM-disk is required.
(initramfs) [6n
ip addr
1: lo: <LOOPBACK> mtu 65536 qdisc noop qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enc800: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
link/ether f2:ae:7d:de:88:a0 brd ff:ff:ff:ff:ff:ff
```
The same cmdline (adjusted for the iso url) works on 20.04.
Between 20.04 and 21.04 the line 318 `echo "${VLAN}" | grep -q "${dev}" &&
continue` was added to /scripts/functions in the initrd.ubuntu. If I remove
this line and repack the ramdisk the network boot works as expected like on
ubuntu 20.04
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