Ubuntu
linux package

  1. Bug #1918970
  2. Comment #1

Comment 1 for bug 1918970

Revision history for this message
Dimitri John Ledkov (xnox) wrote : Re: Unable to boot Ubuntu 18.04 and older on an IBM Z DPM Partition

In https://launchpad.net/ubuntu/+source/initramfs-tools/0.133ubuntu3 in eoan+ manual chzdev -e got added to activate qeth devices, if they have been specified in the ip= command, i.e. if enc300 is the device in the ip= command.

This has not been backported to bionic.

To boot without specifying the device name, i.e. with just mac address one will need automatic chzdev device configuration via /sys/firmware/sclp_sd/config/data that was added in s390-tools v2.5.0 fist available in cosmic+

but that also needs kernel support for sclp_sd driver to exist, i.e first added in v4.16.

Thus if one wants this support one will need to backport
1) initramfs-tools changes
2) s390-tools changes
3) linux sclp_sd driver from linux-hwe to GA