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Bug 2064708 - kdump: mkdumprd: failed to make kdump initrd for bridge or bond network on z15 z/vm
Summary: kdump: mkdumprd: failed to make kdump initrd for bridge or bond network on z1...
Keywords:
Status: CLOSED ERRATA
Alias: None
Deadline: 2022-12-19
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: kexec-tools
Version: 9.1
Hardware: s390
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Coiby
QA Contact: Jie Li
Sujata Kurup
URL:
Whiteboard:
Depends On: 2076416
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-03-16 11:53 UTC by Coiby
Modified: 2024-01-03 14:14 UTC (History)
3 users (show)

Fixed In Version: kexec-tools-2.0.25-7.el9
Doc Type: Known Issue
Doc Text:
.The `kdump` service fails to build the `initrd` file on IBM Z systems On the 64-bit IBM Z systems, the `kdump` service fails to load the initial RAM disk (`initrd`) when `znet` related configuration information such as `s390-subchannels` reside in an inactive `NetworkManager` connection profile. Consequently, the `kdump` mechanism fails with the following error: ---- dracut: Failed to set up znet kdump: mkdumprd: failed to make kdump initrd ---- As a workaround, use one of the following solutions: * Configure a network bond or bridge by re-using the connection profile that has the `znet` configuration information: + ---- $ nmcli connection modify enc600 master bond0 slave-type bond ---- * Copy the `znet` configuration information from the inactive connection profile to the active connection profile: .. Run the `nmcli` command to query the `NetworkManager` connection profiles: + ---- # nmcli connection show NAME UUID TYPE Device bridge-br0 ed391a43-bdea-4170-b8a2 bridge br0 bridge-slave-enc600 caf7f770-1e55-4126-a2f4 ethernet enc600 enc600 bc293b8d-ef1e-45f6-bad1 ethernet -- ---- .. Update the active profile with configuration information from the inactive connection: + ---- #!/bin/bash inactive_connection=enc600 active_connection=bridge-slave-enc600 for name in nettype subchannels options; do field=802-3-ethernet.s390-$name val=$(nmcli --get-values "$field"connection show "$inactive_connection") nmcli connection modify "$active_connection" "$field" $val" done ---- .. Restart the `kdump` service for changes to take effect: + ---- # kdumpctl restart ----
Clone Of:
Environment:
Last Closed: 2023-05-09 08:14:36 UTC
Type: Bug
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-115732 0 None None None 2022-03-16 12:13:33 UTC
Red Hat Product Errata RHBA-2023:2463 0 None None None 2023-05-09 08:14:54 UTC

Description Coiby 2022-03-16 11:53:58 UTC
Description of problem:

kdump fails to build initrd for network  for bridge network on z15 z/vm,

dracut: Failed to set up znet
kdump: mkdumprd: failed to make kdump initrd


The error happens because kexec-tools assumes the znet related parameters like s390-subchannels can be read from the Networkmamanger connection profile that manages the bridge network device.

Version-Release number of selected component (if applicable):


How reproducible:

always

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 11 errata-xmlrpc 2023-05-09 08:14:36 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (kexec-tools bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:2463


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