kexec February 2024

kexec@lists.fedoraproject.org

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3 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] 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

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kexec February 2024