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Coiby Xu b5577c163a Simplify setup_znet by copying connection profile to initrd 
/usr/lib/udev/ccw_init [1] shipped by s390utils extracts the values of
SUBCHANNELS, NETTYPE and LAYER2 from /etc/sysconfig/network-scripts/ifcfg-*
or /etc/NetworkManager/system-connections/*.nmconnection to activate znet
network device. If the connection profile is copied to initrd,
there is no need to set up the "rd.znet" dracut cmdline parameter.

There are two cases addressed by this commit,
 1. znet network interface is a slave of bonding/teaming/vlan/bridging
    network. The connection profile has been copied to initrd by
    kdump_copy_nmconnection_file and it contains the info needed by
    ccw_init.
 2. znet network interface is a slave of bonding/teaming/vlan/bridging
    network. The corresponding ifcfg-*/*.nmconnection file may not contain
    info like SUBCHANNELS [2]. In this case, copy the ifcfg-*/*.nmconnection
    file that has this info to the kdump initrd. Also to prevent the copied
    connection profile from being chosen by NM, set
    connection.autoconnect=false for this connection profile.

With this implementation, there is also no need to check if znet is
used beforehand.

Note
1. ccw_init doesn't care if SUBCHANNELS, NETTYPE and LAYER2 comes from
   an active NM profile or not. If an inactive NM profile contains this
   info, it needs to be copied to the kdump initrd as well.
2. "rd.znet_ifname=$_netdev:${SUBCHANNELS}" is no longer needed needed
   because now there is no renaming of s390x network interfaces when
   reusing NetworkManager profiles. rd.znet_ifname was introduced in
   commit ce0305d ("Add a new option 'rd.znet_ifname' in order to use it
   in udev rules") to address the special case of non-persistent
   MAC address by renaming a network interface by SUBCHANNELS.

[1] https://src.fedoraproject.org/rpms/s390utils/blob/rawhide/f/ccw_init
[2] https://bugzilla.redhat.com/show_bug.cgi?id=2064708

Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
2022-11-23 06:39:27 +08:00
spec unit tests: add tests for get_system_size and get_recommend_size 2022-05-13 11:03:22 +08:00
tests tests: use .nmconnection to set up test network 2022-11-09 14:07:29 +08:00
.editorconfig kdump-lib-initramfs.sh: prepare to be a POSIX compatible lib 2021-09-14 03:25:46 +08:00
.gitignore unit tests: prepare for kdumpctl and kdump-lib.sh to be unit-tested 2022-04-14 11:44:12 +08:00
.shellspec unit tests: add tests for get_grub_kernel_boot_parameter 2022-04-14 11:44:27 +08:00
60-kdump.install Write to /var/lib/kdump if $KDUMP_BOOTDIR not writable 2021-04-19 16:11:17 +08:00
92-crashkernel.install Prefix reset-crashkernel-{for-installed_kernel,after-update} with underscore 2022-10-20 13:54:10 +08:00
98-kexec.rules Make udev reload rules quiet during bootup 2018-12-06 17:44:03 +08:00
98-kexec.rules.ppc64 Stop reloading kdump service on CPU hotplug event for FADump 2021-03-10 16:24:42 +08:00
crashkernel-howto.txt remind the users to run zipl after calling grubby on s390x 2022-08-03 11:09:55 +08:00
dracut-early-kdump-module-setup.sh dracut-early-kdump-module-setup.sh: install xargs and kdump-lib-initramfs.sh 2021-12-27 09:16:19 +08:00
dracut-early-kdump.sh dracut-early-kdump.sh: make it POSIX compatible 2021-09-15 23:11:37 +08:00
dracut-fadump-init-fadump.sh fadump-init: clean up mount points properly 2021-06-30 17:28:45 +08:00
dracut-fadump-module-setup.sh fadump: isolate fadump initramfs image within the default one 2021-06-29 21:35:58 +08:00
dracut-kdump-capture.service kdump-capture.service: switch to journal for stdout 2022-04-02 16:24:32 +08:00
dracut-kdump-emergency.service Merge kdump-error-handler.sh into kdump.sh 2021-09-14 03:25:54 +08:00
dracut-kdump-emergency.target kdump-emergency: fix "Transaction is destructive" emergency failure 2017-03-31 11:54:30 +08:00
dracut-kdump.sh Wait for the network to be truly ready before dumping vmcore 2022-11-23 06:39:27 +08:00
dracut-module-setup.sh Simplify setup_znet by copying connection profile to initrd 2022-11-23 06:39:27 +08:00
dracut-monitor_dd_progress monitor-dd-progress fix 2013-06-25 16:45:59 +08:00
early-kdump-howto.txt Improves the early-kdump-howto.txt document in several points: 2020-03-12 23:31:34 +08:00
fadump-howto.txt update fadump-howto 2022-04-24 09:35:05 +08:00
gen-kdump-sysconfig.sh sysconfig: use a simple generator script to maintain 2022-08-16 14:35:35 +08:00
kdump-dep-generator.sh logger: source the logger file individually 2021-01-20 14:13:44 +08:00
kdump-in-cluster-environment.txt Add fence_kdump support for generic clusters 2014-04-03 14:43:06 +08:00
kdump-lib-initramfs.sh Address the cases where a NIC has a different name in kdump kernel 2022-11-23 06:39:27 +08:00
kdump-lib.sh Add lvm2 thin provision dump target checker 2022-11-01 12:20:34 +08:00
kdump-logger.sh Add header comment for POSIX compliant scripts 2021-09-15 23:11:37 +08:00
kdump-migrate-action.sh kdump/ppc64: rebuild initramfs image after migration 2021-07-21 10:53:59 +08:00
kdump-restart.sh kdump/ppc64: rebuild initramfs image after migration 2021-07-21 10:53:59 +08:00
kdump-udev-throttler Make udev reload rules quiet during bootup 2018-12-06 17:44:03 +08:00
kdump.conf virtiofs support for kexec-tools 2022-09-29 12:22:49 +08:00
kdump.conf.5 introduce the auto_reset_crashkernel option to kdump.conf 2022-01-05 09:40:24 +08:00
kdump.service kdump.service: use ConditionKernelCommandLine=crashkernel 2020-10-27 12:22:36 -04:00
kdumpctl Skip reset_crashkernel_after_update during package install 2022-11-18 17:22:39 +08:00
kdumpctl.8 add man documentation for kdumpctl get-default-crashkernel 2022-04-24 09:35:05 +08:00
kexec-kdump-howto.txt update kexec-kdump-howto 2022-04-24 09:35:05 +08:00
kexec-tools-2.0.23-s390_handle_R_390_PLT32DBL_reloc_entries_in_machine_apply_elf_rel_.patch s390: handle R_390_PLT32DBL reloc entries in machine_apply_elf_rel() 2022-01-26 08:25:43 +08:00
kexec-tools.spec Release 2.0.25-2 2022-10-27 16:00:11 +08:00
live-image-kdump-howto.txt Revert "kdumpctl: filter 'root' kernel parameter when running in live images" 2017-04-11 16:03:12 +08:00
mkdumprd Reduce kdump memory consumption by only installing needed NIC drivers 2022-11-23 06:39:27 +08:00
mkdumprd.8 Doc: improve mkdumprd man page 2020-12-11 14:05:08 +08:00
mkfadumprd fadump: preserve file modification time to help with hardlinking 2022-11-09 14:07:29 +08:00
README README: Add a README file 2014-04-02 10:45:36 +08:00
sources Release 2.0.25-2 2022-10-27 16:00:11 +08:00
zanata-notes.txt Add a notes for zanata process 2012-12-05 01:23:09 -05:00

README 

Adding a patch to kexec-tools
=============================
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So if you want your patches to be included in fedora kexec-tools package,
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