kexec March 2024

kexec@lists.fedoraproject.org

4 participants
6 discussions

[PATCH 1/2] Try to install PHY and MDIO bus drivers explicitly
by Coiby Xu 29 Apr '24

29 Apr '24

Resolves: https://issues.redhat.com/browse/RHEL-7028 Currently, nfs dumping fails on some machines that has a dedicated PHY driver (dealing with the physical layer) or MDIO bus (connecting the MAC to PHY devices) driver. This is because kexec-tools doesn't install dedicated PHY or MDIO driver explicitly and the NIC driver don't specify the dependency on the needed PHY or MDIO driver. So when the dependency on a PHY driver or MDIO driver is not found by dracut's instmods, the PHY or MDIO driver won't be installed. This patch passes =drivers/net/phy and =drivers/net/mdio to dracut's instmods which will only install in-use PHY or MDIO driver(s). Note ideally we should find out which PHY driver is used by a NIC but unfortunately currently no universal way can be found (/sys/class/net/NIC_NAME/device/driver/module can be used to find the name of the PHY driver for some NICs but it doesn't exist for some NICs like Qualcomm Atheros AR8031). So is it for a MDIO bus driver. Fortunately currently no huge memory consumption is found for a PHY or MDIO driver. Fixes: a65dde2d ("Reduce kdump memory consumption by only installing needed NIC drivers") Reported-by: Doreen Alongi <dalongi(a)redhat.com> Signed-off-by: Coiby Xu <coxu(a)redhat.com> --- dracut-module-setup.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index ff53d084..905e6fbd 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -381,7 +381,7 @@ _get_hpyerv_physical_driver() { kdump_install_nic_driver() { local _netif _driver _drivers - _drivers=() + _drivers=('=drivers/net/phy' '=drivers/net/mdio') for _netif in $1; do [[ $_netif == lo ]] && continue -- 2.41.0

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[PATCH 1/2] doc/kdump.conf: correctly align the options
by Coiby Xu 21 Mar '24

21 Mar '24

Currently, the other options like "raw <partition>" become child items of the auto_reset_crashkernel option, auto_reset_crashkernel <yes|no> ... raw <partition> ... nfs <nfs mount> ... ... Fix it by ending the auto_reset_crashkernel with ".RE". Fixes: 73ced7f4 ("introduce the auto_reset_crashkernel option to kdump.conf") Signed-off-by: Coiby Xu <coxu(a)redhat.com> --- kdump.conf.5 | 1 + 1 file changed, 1 insertion(+) diff --git a/kdump.conf.5 b/kdump.conf.5 index 0e6ff211..f738dbaa 100644 --- a/kdump.conf.5 +++ b/kdump.conf.5 @@ -43,6 +43,7 @@ reset-crashkernel [--kernel=path_to_kernel]" if you want to use the default value set after having enabled features like SME/SEV for a specific kernel. And you should also reboot the system for the new crashkernel value to take effect. Also see kdumpctl(8). +.RE .B raw <partition> .RS -- 2.44.0

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[PATCH 1/3] tests: enable kdump.service in the systemd preset policy to allow setting up the crashkernel kernel parameter automatically
by Coiby Xu 20 Mar '24

20 Mar '24

Previously, the kernel parameter crashkernel will be set up when kexec-tools is installed. But now it will happen only when kdump.service is enabled first. When kexec-tools is freshly installed, the kdump.service will be enabled according to the systemd policy file and later the kernel parameter crashkernel will be added only if kdump.service is enabled. Fedora disables kdump.service in the systemd policy. So enable kdump.service in the systemd preset policy manually in the test script. In case kexec-tools has already been installed, simply enable kdump.service. Fixes: 0ffce0ef ("Only try to reset crashkernel when kdump.service is enabled") Signed-off-by: Coiby Xu <coxu(a)redhat.com> --- tests/scripts/build-scripts/test-base-image.sh | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tests/scripts/build-scripts/test-base-image.sh b/tests/scripts/build-scripts/test-base-image.sh index afe1a974..3797a25a 100755 --- a/tests/scripts/build-scripts/test-base-image.sh +++ b/tests/scripts/build-scripts/test-base-image.sh @@ -16,6 +16,11 @@ img_inst $TESTDIR/scripts/kexec-kdump-test/test.sh /kexec-kdump-test/test.sh img_inst $TESTDIR/scripts/kexec-kdump-test/kexec-kdump-test.service /etc/systemd/system/kexec-kdump-test.service img_run_cmd "systemctl enable kexec-kdump-test.service" +# enable kdump.service in the systemd preset policy so the kernel parameter crashkernel +# will be added automatically when kexec-tools is freshly installed +img_run_cmd "echo 'enable kdump.service' > /usr/lib/systemd/system-preset/95-kdump.preset" +# In case kexec-tools has already been installed, simply enable kdump.serivce +img_run_cmd " rpm --quiet -q kexec-tools && systemctl enable kdump.service" img_inst_pkg $TEST_RPMS # Test script should start kdump manually to save time img_run_cmd "systemctl disable kdump.service" -- 2.44.0

1 2

[PATCH] ppc64le: replace kernel cmdline maxcpu=1 with nr_cpus=1
by Sourabh Jain 20 Mar '24

20 Mar '24

With patch series [1], PowerPC supports nr_cpus=1, so use nr_cpus=1 instead of maxcpu=1 in the kdump environment. Note this changes is dependent on kernel changes [1] [1] https://lore.kernel.org/all/170800202447.601034.7290612623478478380.b4-ty@e… Signed-off-by: Sourabh Jain <sourabhjain(a)linux.ibm.com> Cc: Hari Bathini <hbathini(a)linux.ibm.com> Cc: Mahesh Salgaonkar <mahesh(a)linux.ibm.com> --- gen-kdump-sysconfig.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gen-kdump-sysconfig.sh b/gen-kdump-sysconfig.sh index 4a28350..78b0bb7 100755 --- a/gen-kdump-sysconfig.sh +++ b/gen-kdump-sysconfig.sh @@ -92,7 +92,7 @@ ppc64le) update_param KDUMP_COMMANDLINE_REMOVE \ "hugepages hugepagesz slub_debug quiet log_buf_len swiotlb hugetlb_cma ignition.firstboot" update_param KDUMP_COMMANDLINE_APPEND \ - "irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0" + "irqpoll nr_cpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0" ;; s390x) update_param KEXEC_ARGS "-s" -- 2.43.0

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[PATCH 0/2] Include supported-kdump-targets.txt from CentOS Stream 9
by Philipp Rudo 20 Mar '24

20 Mar '24

Hi, This small series imports the supported-kdump-targets.txt from CentOS Stream 9. Please see the patch description of patch 1 for a discussion why this makes sense. Patch 2 is a small clean up I noticed. If required the two patches can also be squashed. FYI about removal of libteam in the upcoming CentOS Stream 10, I screwed up slightly in my first review. I missed that the only mentioning of team devices is in the "Unsupported" section. Support for teamed devices was already removed at the beginning of CentOS Stream 9 development with this commit [2]. So no update to supported-kdump-targets.txt is needed for that change. [2] https://gitlab.com/redhat/centos-stream/rpms/kexec-tools/-/commit/9e86be70a… Philipp Rudo (2): Supported targets: Import from CentOS Stream 9 Supported targets: Merge hypervisor sections kexec-tools.spec | 3 + supported-kdump-targets.txt | 119 ++++++++++++++++++++++++++++++++++++ 2 files changed, 122 insertions(+) create mode 100644 supported-kdump-targets.txt -- 2.43.0

2 3

[RFC] Upstream kdump-utils
by Coiby Xu 06 Mar '24

06 Mar '24

This patch upstreams the to-be-split-out kdump-utils to https://github.com/rhkdump/kdump-utils. And it also simplify the .spec file by putting the installation logic into a Makefile. Cc: Philipp Rudo <prudo(a)redhat.com> Cc: Carl George <carl(a)redhat.com> Signed-off-by: Coiby Xu <coxu(a)redhat.com> --- COPYING | 339 +++++++++++++++++++++++++++++++++++++++++++++++ Makefile | 85 ++++++++++++ kdump-utils.spec | 133 +++++++++++++++++++ 3 files changed, 557 insertions(+) create mode 100644 COPYING create mode 100644 Makefile create mode 100644 kdump-utils.spec diff --git a/COPYING b/COPYING new file mode 100644 index 00000000..d159169d --- /dev/null +++ b/COPYING @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/Makefile b/Makefile new file mode 100644 index 00000000..ce05afa7 --- /dev/null +++ b/Makefile @@ -0,0 +1,85 @@ +prefix ?= /usr +libdir ?= ${prefix}/lib +datadir ?= ${prefix}/share +pkglibdir ?= ${libdir}/kdump +sysconfdir ?= /etc +bindir ?= ${prefix}/bin +sbindir ?= ${prefix}/sbin +mandir ?= ${prefix}/share/man +localstatedir ?= /var +sharedstatedir ?= /var/lib +udevrulesdir ?= ${libdir}/udev/rules.d +systemdsystemunitdir ?= ${libdir}/systemd/system/ +ARCH ?= $(shell uname -m) +dracutmoddir = $(DESTDIR)${libdir}/dracut/modules.d +kdumpbasemoddir = $(dracutmoddir)/99kdumpbase + +dracut-modules: + mkdir -p $(dracutmoddir) + mkdir -p -m755 $(kdumpbasemoddir) + + install -m 755 dracut-kdump.sh $(kdumpbasemoddir)/kdump.sh + install -m 755 dracut-module-setup.sh $(kdumpbasemoddir)/module-setup.sh + install -m 755 dracut-monitor_dd_progress $(kdumpbasemoddir)/monitor_dd_progress.sh + install -m 644 dracut-kdump-emergency.service $(kdumpbasemoddir)/kdump-emergency.service + install -m 644 dracut-kdump-capture.service $(kdumpbasemoddir)/kdump-capture.service + install -m 644 dracut-kdump-emergency.target $(kdumpbasemoddir)/kdump-emergency.target + + mkdir -p -m755 $(dracutmoddir)/99earlykdump + install -m 755 dracut-early-kdump.sh $(dracutmoddir)/99earlykdump/kdump.sh + install -m 755 dracut-early-kdump-module-setup.sh $(dracutmoddir)/99earlykdump/kdump-module-setup.sh + +ifneq (,$(filter $(ARCH),ppc64 ppc64le)) + mkdir -p -m755 $(dracutmoddir)/99zz-fadumpinit + install -m 755 dracut-fadump-init-fadump.sh $(dracutmoddir)/99zz-fadumpinit/init-fadump.sh + install -m 755 dracut-fadump-module-setup.sh $(dracutmoddir)/99zz-fadumpinit/module-setup.sh +endif + +kdump-conf: gen-kdump-conf.sh + ./gen-kdump-conf.sh $(ARCH) > kdump.conf + +kdump-sysconfig: gen-kdump-sysconfig.sh + ./gen-kdump-sysconfig.sh $(ARCH) > kdump.sysconfig + +manpages: + install -D -m 644 mkdumprd.8 kdumpctl.8 -t $(DESTDIR)$(mandir)/man8 + install -D -m 644 kdump.conf.5 $(DESTDIR)$(mandir)/man5/kdump.conf.5 + +install: dracut-modules kdump-conf kdump-sysconfig manpages + mkdir -p $(DESTDIR)$(pkglibdir) + mkdir -p -m755 $(DESTDIR)$(sysconfdir)/kdump/pre.d + mkdir -p -m755 $(DESTDIR)$(sysconfdir)/kdump/post.d + mkdir -p -m755 $(DESTDIR)$(localstatedir)/crash + mkdir -p -m755 $(DESTDIR)$(udevrulesdir) + mkdir -p -m755 $(DESTDIR)$(sharedstatedir)/kdump + + install -D -m 755 kdumpctl $(DESTDIR)$(bindir)/kdumpctl + install -D -m 755 mkdumprd $(DESTDIR)$(sbindir)/mkdumprd + install -D -m 644 kdump.conf $(DESTDIR)$(sysconfdir) + install -D -m 644 kdump.sysconfig $(DESTDIR)$(sysconfdir)/sysconfig/kdump + install -D -m 755 kdump-lib.sh kdump-lib-initramfs.sh kdump-logger.sh -t $(DESTDIR)$(pkglibdir) + +ifneq (,$(filter $(ARCH),ppc64 ppc64le)) + install -m 755 mkfadumprd $(DESTDIR)$(sbindir) + install -m 755 kdump-migrate-action.sh kdump-restart.sh -t $(DESTDIR)$(pkglibdir) +endif + +ifneq ($(ARCH),s390x) + install -m 755 kdump-udev-throttler $(DESTDIR)$(udevrulesdir)/../kdump-udev-throttler +endif + +ifneq (,$(filter $(ARCH),s390x ppc64 ppc64le)) + # For s390x the ELF header is created in the kdump kernel and therefore kexec + # udev rules are not required + install -m 644 98-kexec.rules $(DESTDIR)$(udevrulesdir)/98-kexec.rules +endif + +ifneq (,$(filter $(ARCH),ppc64 ppc64le)) + install -m 644 98-kexec.rules.ppc64 $(DESTDIR)$(udevrulesdir)/98-kexec.rules + install -m 755 -D %{SOURCE37} $(DESTDIR)$(libdir)/kernel/install.d/60-fadump.install +endif + + install -D -m 644 kdump.service $(DESTDIR)$(systemdsystemunitdir)/kdump.service + install -m 755 -D kdump-dep-generator.sh $(DESTDIR)$(libdir)/systemd/system-generators/kdump-dep-generator.sh + install -m 755 -D 60-kdump.install $(DESTDIR)$(libdir)/kernel/install.d/60-kdump.install + install -m 755 -D 92-crashkernel.install $(DESTDIR)$(libdir)/kernel/install.d/92-crashkernel.install diff --git a/kdump-utils.spec b/kdump-utils.spec new file mode 100644 index 00000000..c479376b --- /dev/null +++ b/kdump-utils.spec @@ -0,0 +1,133 @@ +Name: kdump-utils +Version: 1.0.42 +Release: 1%{?dist} +Summary: Kernel crash dump collection utilities + +License: GPL-2.0-only AND LGPL-2.1-or-later +URL: https://github.com/rhkdump/kdump-utils +Source0: https://github.com/rhkdump/kdump-utils/archive/v%{version}/%{name}-%{versio… + +%ifarch ppc64 ppc64le +Requires(post): servicelog +Recommends: keyutils +%endif +Requires(pre): coreutils +Requires(pre): sed +Requires: kexec-tools >= 2.0.28-5 +Requires: makedumpfile +Requires: dracut >= 058 +Requires: dracut-network >= 058 +Requires: dracut-squash >= 058 +Requires: ethtool +Requires: util-linux +# Needed for UKI support +Recommends: binutils +Recommends: grubby +Recommends: hostname +BuildRequires: systemd-rpm-macros + +%ifnarch s390x +Requires: systemd-udev%{?_isa} +%endif +%description +kdump-utils is reponsible for collecting the crash kernel dump. It builds and +loads the kdump initramfs so when a kernel crashes, the system will boot the +kdump kernel and initramfs to save the colletecd crash kernel dump to specified +target. + +%prep +%autosetup + +%install + +%make_install + + +%post +# don't try to systemctl preset the kdump service for old kexec-tools +# +# when the old kexec-tools gets removed, this trigger will be excuted to +# create a file. So later the posttrans scriptlet will know there is no need to +# systemctl preset the kdump service. +# This solution can be dropped in F41 when we assume no users will use old +# version of kexec-tools. +%define kexec_tools_no_preset %{_localstatedir}/lib/rpm-state/kexec-tools.no-preset +%triggerun -- kexec-tools +touch %{kexec_tools_no_preset} + +touch /etc/kdump.conf + +%ifarch ppc64 ppc64le +servicelog_notify --remove --command=/usr/lib/kdump/kdump-migrate-action.sh 2>/dev/null +servicelog_notify --add --command=/usr/lib/kdump/kdump-migrate-action.sh --match='refcode="#MIGRATE" and serviceable=0' --type=EVENT --method=pairs_stdin >/dev/null +%endif + + +%postun +%systemd_postun_with_restart kdump.service + +%preun +%ifarch ppc64 ppc64le +servicelog_notify --remove --command=/usr/lib/kdump/kdump-migrate-action.sh >/dev/null +%endif +%systemd_preun kdump.service + +%posttrans +# don't try to systemctl preset the kdump service for old kexec-tools +if [[ -f %{kexec_tools_no_preset} ]]; then + # this if branch can be removed in F41 when we assume no users will use the old kexec-tools + rm %{kexec_tools_no_preset} +else + # Initial installation + %systemd_post kdump.service +fi +# Try to reset kernel crashkernel value to new default value or set up +# crasherkernel value for new install +# +# Note +# 1. Skip ostree systems as they are not supported. +# 2. For Fedora 36 and RHEL9, "[ $1 == 1 ]" in posttrans scriptlet means both install and upgrade; +# For Fedora > 36, "[ $1 == 1 ]" only means install and "[ $1 == 2 ]" means upgrade +if [ ! -f /run/ostree-booted ] && [ $1 == 1 -o $1 == 2 ]; then + kdumpctl _reset-crashkernel-after-update + : +fi + +%files +%ifarch ppc64 ppc64le +%{_sbindir}/mkfadumprd +%{_prefix}/lib/kernel/install.d/60-fadump.install +%endif +%{_sbindir}/mkdumprd +%{_bindir}/* +%{_prefix}/lib/kdump +%config(noreplace,missingok) %{_sysconfdir}/sysconfig/kdump +%config(noreplace,missingok) %verify(not mtime) %{_sysconfdir}/kdump.conf +%ifnarch s390x +%{_udevrulesdir} +%{_udevrulesdir}/../kdump-udev-throttler +%endif +%{_prefix}/lib/dracut/modules.d/* +%dir %{_localstatedir}/crash +%dir %{_sysconfdir}/kdump +%dir %{_sysconfdir}/kdump/pre.d +%dir %{_sysconfdir}/kdump/post.d +%dir %{_sharedstatedir}/kdump +%{_mandir}/man8/kdumpctl.8* +%{_mandir}/man8/mkdumprd.8* +%{_mandir}/man5/kdump.conf.5* +%{_unitdir}/kdump.service +%{_prefix}/lib/systemd/system-generators/kdump-dep-generator.sh +%{_prefix}/lib/kernel/install.d/60-kdump.install +%{_prefix}/lib/kernel/install.d/92-crashkernel.install +%license COPYING +%doc kexec-kdump-howto.txt +%doc early-kdump-howto.txt +%doc fadump-howto.txt +%doc kdump-in-cluster-environment.txt +%doc live-image-kdump-howto.txt +%doc crashkernel-howto.txt + +%changelog +* Tue Oct 24 2023 Coiby <coxu(a)redhat.com> - 1.0.42-1 +- split from kexec-tools -- 2.43.2

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kexec March 2024