kexec November 2015

kexec@lists.fedoraproject.org

4 participants
10 discussions

[PATCH RFC] module-setup.sh: install usb serial driver for ttyUSB0
by Dave Young 27 May '16

27 May '16

In case one want to use usb serial console, we need to pack the usb serial driver into kdump initramfs so that one can see the console output on the usb console. I only handled ttyUSB0, this is like a hard code, but it should be enough for most cases. Also only install the driver for the ttyUSB0 device. Tested with adding "console=ttyUSB0" in 2nd kernel commandline. Tested latest F22 kernel, there's CONFIG_USB_SERIAL_CONSOLE=y, kdump work ok. Signed-off-by: Dave Young <dyoung(a)redhat.com> --- dracut-module-setup.sh | 8 ++++++++ 1 file changed, 8 insertions(+) --- kexec-tools.orig/dracut-module-setup.sh +++ kexec-tools/dracut-module-setup.sh @@ -626,4 +626,12 @@ installkernel() { [ "$wdt" = "iTCO_wdt" ] && instmods lpc_ich instmods $wdt fi + + if [ -c /dev/ttyUSB0 ]; then + _majmin=$(get_maj_min /dev/ttyUSB0) + + _driver=$(readlink /sys/dev/char/$_majmin/device/driver) + _driver=$(basename $_driver) + instmods $_driver + fi }

3 4

[PATCH 2/2] Enable makedumpfile building for armv7hl
by Dave Young 09 Dec '15

09 Dec '15

makedumpfile has arm support but we did not enable the build options in Fedora rpm spec file, let's do it for armv7hl. Tested on bbb arm board with basic "bt" command in crash utility. Enabling the build so that we can collect more test result Signed-off-by: Dave Young <dyoung(a)redhat.com> --- kexec-tools.spec | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- kexec-tools.orig/kexec-tools.spec +++ kexec-tools/kexec-tools.spec @@ -49,7 +49,7 @@ Requires: dracut, dracut-network, ethtoo BuildRequires: zlib-devel zlib zlib-static elfutils-devel-static glib2-devel bzip2-devel ncurses-devel bison flex lzo-devel snappy-devel BuildRequires: pkgconfig intltool gettext BuildRequires: systemd-units -%ifarch %{ix86} x86_64 ppc64 ppc s390x ppc64le +%ifarch %{ix86} x86_64 ppc64 ppc s390x ppc64le armv7hl Obsoletes: diskdumputils netdump kexec-tools-eppic %endif @@ -129,7 +129,7 @@ cp %{SOURCE10} . cp %{SOURCE21} . make -%ifarch %{ix86} x86_64 ppc64 s390x ppc64le +%ifarch %{ix86} x86_64 ppc64 s390x ppc64le armv7hl make -C eppic/libeppic make -C makedumpfile-1.5.9 LINKTYPE=dynamic USELZO=on USESNAPPY=on make -C makedumpfile-1.5.9 LDFLAGS="-I../eppic/libeppic -L../eppic/libeppic" eppic_makedumpfile.so @@ -174,7 +174,7 @@ install -m 755 -D %{SOURCE22} $RPM_BUILD mkdir -p $RPM_BUILD_ROOT/usr/sbin install -m 755 %{SOURCE17} $RPM_BUILD_ROOT/usr/sbin/rhcrashkernel-param -%ifarch %{ix86} x86_64 ppc64 s390x ppc64le +%ifarch %{ix86} x86_64 ppc64 s390x ppc64le armv7hl install -m 755 makedumpfile-1.5.9/makedumpfile $RPM_BUILD_ROOT/sbin/makedumpfile install -m 644 makedumpfile-1.5.9/makedumpfile.8.gz $RPM_BUILD_ROOT/%{_mandir}/man8/makedumpfile.8.gz install -m 644 makedumpfile-1.5.9/makedumpfile.conf.5.gz $RPM_BUILD_ROOT/%{_mandir}/man5/makedumpfile.conf.5.gz @@ -280,7 +280,7 @@ done %{_bindir}/* %{_datadir}/kdump %{_prefix}/lib/kdump -%ifarch %{ix86} x86_64 ppc64 s390x ppc64le +%ifarch %{ix86} x86_64 ppc64 s390x ppc64le armv7hl %{_sysconfdir}/makedumpfile.conf.sample %endif %config(noreplace,missingok) %{_sysconfdir}/sysconfig/kdump @@ -299,7 +299,7 @@ done %doc TODO %doc kexec-kdump-howto.txt %doc kdump-in-cluster-environment.txt -%ifarch %{ix86} x86_64 ppc64 s390x ppc64le +%ifarch %{ix86} x86_64 ppc64 s390x ppc64le armv7hl %{_libdir}/eppic_makedumpfile.so /usr/share/makedumpfile/eppic_scripts/ %endif

2 2

[PATCH 1/2] Add missing prefixes in default sysconfig file
by Dave Young 09 Dec '15

09 Dec '15

For arches we do not exlictly support, kdumpctl will fail with errors because kernel can not be found. It is caused by there's no proper KDUMP_IMG prefix so kernel image can not be found. Kexec/kdump functionality may simply work, so let's add those prefix in default sysconfig file thus one can test and use kexec/kdump in Fedora. Signed-off-by: Dave Young <dyoung(a)redhat.com> --- kdump.sysconfig | 6 ++++++ 1 file changed, 6 insertions(+) --- kexec-tools.orig/kdump.sysconfig +++ kexec-tools/kdump.sysconfig @@ -24,3 +24,9 @@ KDUMP_COMMANDLINE_APPEND="irqpoll maxcpu # Example: # KEXEC_ARGS="--elf32-core-headers" KEXEC_ARGS="" + +#Where to find the boot image +#KDUMP_BOOTDIR="/boot" + +#What is the image type used for kdump +KDUMP_IMG="vmlinuz"

2 2

[PATCH] dracut-module-setup: Mute the error message when kdump detects iSCSI session by iscsiadm
by Minfei Huang 06 Dec '15

06 Dec '15

For independent hardware iSCSI HBA, the network config will be recorded in the firmware BIOS. It fails to use normal means(like iscsiadm) to detect iSCSI session details, since HBA firmware doesn't expose the session to running kernel. Mute the error message when kdump detects iSCSI session by iscsiadm. Signed-off-by: Minfei Huang <mhuang(a)redhat.com> --- dracut-module-setup.sh | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index 9b398eb..1736315 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -512,9 +512,9 @@ kdump_setup_iscsi_device() { # Check once before getting explicit values, so we can output a decent # error message. - if ! /sbin/iscsiadm -m session -r ${path} >/dev/null ; then - derror "Unable to find iscsi record for $path" - return 1 + if ! /sbin/iscsiadm -m session -r ${path} 2>&- > /dev/null ; then + # Yes, it is hardware iscsi HBA. + return fi tgt_name=$(kdump_iscsi_get_rec_val ${path} "node.name") -- 2.1.0

3 7

[PATCH v3] kdump.sysconfig: add KDUMP_COMMANDLINE_REMOVE
by Dangyi Liu 04 Dec '15

04 Dec '15

Use KDUMP_COMMANDLINE_REMOVE config instead of hardcode them in kdumpctl, which makes it possible system admins decide what params to remove such as "quiet" or other debug flags. This patch also adds backward compatibility even if an old config is used. It will behave the same as the old version. Signed-off-by: Dangyi Liu <dliu(a)redhat.com> Cc: Baoquan He <bhe(a)redhat.com> Cc: Dave Young <dyoung(a)redhat.com> --- Changes: v2->v3: Always remove crashkernel and panic_on_warn v1->v2: Add compatibility; describle the order to process cmdline kdump.sysconfig | 7 ++++++- kdump.sysconfig.i386 | 7 ++++++- kdump.sysconfig.ppc64 | 7 ++++++- kdump.sysconfig.ppc64le | 7 ++++++- kdump.sysconfig.s390x | 7 ++++++- kdump.sysconfig.x86_64 | 7 ++++++- kdumpctl | 9 +++++++-- 7 files changed, 43 insertions(+), 8 deletions(-) diff --git a/kdump.sysconfig b/kdump.sysconfig index effe466..d44c8ae 100644 --- a/kdump.sysconfig +++ b/kdump.sysconfig @@ -14,8 +14,13 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# NOTE: some arguments such as crashkernel will always be removed +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.i386 b/kdump.sysconfig.i386 index bb7a6e5..37d1b96 100644 --- a/kdump.sysconfig.i386 +++ b/kdump.sysconfig.i386 @@ -14,8 +14,13 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# NOTE: some arguments such as crashkernel will always be removed +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.ppc64 b/kdump.sysconfig.ppc64 index dd09598..3d4db57 100644 --- a/kdump.sysconfig.ppc64 +++ b/kdump.sysconfig.ppc64 @@ -14,8 +14,13 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# NOTE: some arguments such as crashkernel will always be removed +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.ppc64le b/kdump.sysconfig.ppc64le index dd09598..3d4db57 100644 --- a/kdump.sysconfig.ppc64le +++ b/kdump.sysconfig.ppc64le @@ -14,8 +14,13 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# NOTE: some arguments such as crashkernel will always be removed +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.s390x b/kdump.sysconfig.s390x index b103a88..96b3d1b 100644 --- a/kdump.sysconfig.s390x +++ b/kdump.sysconfig.s390x @@ -14,8 +14,13 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# NOTE: some arguments such as crashkernel will always be removed +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never" # Any additional /sbin/mkdumprd arguments required. diff --git a/kdump.sysconfig.x86_64 b/kdump.sysconfig.x86_64 index 7991d68..5faab65 100644 --- a/kdump.sysconfig.x86_64 +++ b/kdump.sysconfig.x86_64 @@ -14,8 +14,13 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# NOTE: some arguments such as crashkernel will always be removed +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdumpctl b/kdumpctl index 9f7e56b..ef18a2d 100755 --- a/kdumpctl +++ b/kdumpctl @@ -19,6 +19,9 @@ DEFAULT_DUMP_MODE="kdump" standard_kexec_args="-p" +# Some default values in case /etc/sysconfig/kdump doesn't include +KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug" + if [ -f /etc/sysconfig/kdump ]; then . /etc/sysconfig/kdump fi @@ -105,8 +108,10 @@ prepare_cmdline() else cmdline=${KDUMP_COMMANDLINE} fi - cmdline=`remove_cmdline_param "$cmdline" crashkernel hugepages hugepagesz panic_on_warn slub_debug` - + # These params should always be removed + cmdline=`remove_cmdline_param "$cmdline" crashkernel panic_on_warn` + # These params can be removed configurably + cmdline=`remove_cmdline_param "$cmdline" ${KDUMP_COMMANDLINE_REMOVE}` cmdline="${cmdline} ${KDUMP_COMMANDLINE_APPEND}" -- 2.5.0

3 3

[PATCH] kdump-lib-initramfs.sh: Add -f for all DEFAULT_ACTIONs
by Dangyi Liu 04 Dec '15

04 Dec '15

Systemd reports a conflict when kdump calls reboot during booting because it tries to stop services while they are starting up. Adding -f for reboot (halt, poweroff) will make systemd reboot immediately without the step to stop services, which is safe enough since we have manually called sync after dumping. Signed-off-by: Dangyi Liu <dliu(a)redhat.com> --- kdump-lib-initramfs.sh | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/kdump-lib-initramfs.sh b/kdump-lib-initramfs.sh index 68a94e8..724fff5 100755 --- a/kdump-lib-initramfs.sh +++ b/kdump-lib-initramfs.sh @@ -6,14 +6,14 @@ KDUMP_PATH="/var/crash" CORE_COLLECTOR="" DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 1 -d 31" DMESG_COLLECTOR="/sbin/vmcore-dmesg" -DEFAULT_ACTION="reboot" +DEFAULT_ACTION="reboot -f" DATEDIR=`date +%Y-%m-%d-%T` HOST_IP='127.0.0.1' DUMP_INSTRUCTION="" SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa" KDUMP_SCRIPT_DIR="/kdumpscripts" DD_BLKSIZE=512 -FINAL_ACTION="reboot" +FINAL_ACTION="reboot -f" KDUMP_CONF="/etc/kdump.conf" KDUMP_PRE="" KDUMP_POST="" @@ -57,13 +57,13 @@ get_kdump_confs() DEFAULT_ACTION="kdump_emergency_shell" ;; reboot) - DEFAULT_ACTION="reboot" + DEFAULT_ACTION="reboot -f" ;; halt) - DEFAULT_ACTION="halt" + DEFAULT_ACTION="halt -f" ;; poweroff) - DEFAULT_ACTION="poweroff" + DEFAULT_ACTION="poweroff -f" ;; dump_to_rootfs) DEFAULT_ACTION="dump_to_rootfs" -- 2.5.0

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[PATCH 0/2] kexec/kdump for armv7hl arch
by Dave Young 04 Dec '15

04 Dec '15

Hi, I played with arm kexec/kdump, it simply works with some minor fixes. Here is two patches for Fedora kdump scripts. Btw I used a kernel built by myself. Thanks Dave

1 1

crash and upstream arm kernel
by Dave Young 04 Dec '15

04 Dec '15

Hi, Dave I played with kdump on arm platform recently. It works well for me with a few patches to kexec-tools, but seems crash tool can not recogonize the vmlinux. Do you have any hints about below error? I'm sure the vmlinux and vmcore are same build with rh cross compiler 5.2.1: WARNING: kernels compiled by different gcc versions: vmlinux: (unknown) /var/crash/127.0.0.1-2015-11-28-16:00:50/vmcore kernel: 5.2.1 WARNING: kernel version inconsistency between vmlinux and dumpfile crash: incompatible arguments: vmlinux is not SMP -- /var/crash/127.0.0.1-2015-11-28-16:00:50/vmcore is SMP Thanks Dave

2 7

[PATCH v2] kdump.sysconfig: add KDUMP_COMMANDLINE_REMOVE
by Dangyi Liu 15 Nov '15

15 Nov '15

Use KDUMP_COMMANDLINE_REMOVE config instead of hardcode them in kdumpctl. System admins can also specify what to remove as they like. This patch also adds backward compatibility even if an old config is used. Signed-off-by: Dangyi Liu <dliu(a)redhat.com> --- Changes: v1 -> v2: Add compatibility; describle the order to process cmdline kdump.sysconfig | 6 +++++- kdump.sysconfig.i386 | 6 +++++- kdump.sysconfig.ppc64 | 6 +++++- kdump.sysconfig.ppc64le | 6 +++++- kdump.sysconfig.s390x | 6 +++++- kdump.sysconfig.x86_64 | 6 +++++- kdumpctl | 6 ++++-- 7 files changed, 34 insertions(+), 8 deletions(-) diff --git a/kdump.sysconfig b/kdump.sysconfig index effe466..6672471 100644 --- a/kdump.sysconfig +++ b/kdump.sysconfig @@ -14,8 +14,12 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.i386 b/kdump.sysconfig.i386 index bb7a6e5..87a3a2a 100644 --- a/kdump.sysconfig.i386 +++ b/kdump.sysconfig.i386 @@ -14,8 +14,12 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.ppc64 b/kdump.sysconfig.ppc64 index dd09598..44eb188 100644 --- a/kdump.sysconfig.ppc64 +++ b/kdump.sysconfig.ppc64 @@ -14,8 +14,12 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.ppc64le b/kdump.sysconfig.ppc64le index dd09598..44eb188 100644 --- a/kdump.sysconfig.ppc64le +++ b/kdump.sysconfig.ppc64le @@ -14,8 +14,12 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdump.sysconfig.s390x b/kdump.sysconfig.s390x index b103a88..1092520 100644 --- a/kdump.sysconfig.s390x +++ b/kdump.sysconfig.s390x @@ -14,8 +14,12 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never" # Any additional /sbin/mkdumprd arguments required. diff --git a/kdump.sysconfig.x86_64 b/kdump.sysconfig.x86_64 index 7991d68..9ef305a 100644 --- a/kdump.sysconfig.x86_64 +++ b/kdump.sysconfig.x86_64 @@ -14,8 +14,12 @@ KDUMP_KERNELVER="" # /proc/cmdline KDUMP_COMMANDLINE="" +# This variable lets us remove arguments from the current kdump commandline +# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + # This variable lets us append arguments to the current kdump commandline -# As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline +# after processed by KDUMP_COMMANDLINE_REMOVE KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug transparent_hugepage=never" # Any additional kexec arguments required. In most situations, this should diff --git a/kdumpctl b/kdumpctl index 9f7e56b..dbb6d7f 100755 --- a/kdumpctl +++ b/kdumpctl @@ -19,6 +19,9 @@ DEFAULT_DUMP_MODE="kdump" standard_kexec_args="-p" +# Some default values in case /etc/sysconfig/kdump doesn't exist +KDUMP_COMMANDLINE_REMOVE="crashkernel hugepages hugepagesz panic_on_warn slub_debug" + if [ -f /etc/sysconfig/kdump ]; then . /etc/sysconfig/kdump fi @@ -105,8 +108,7 @@ prepare_cmdline() else cmdline=${KDUMP_COMMANDLINE} fi - cmdline=`remove_cmdline_param "$cmdline" crashkernel hugepages hugepagesz panic_on_warn slub_debug` - + cmdline=`remove_cmdline_param "$cmdline" ${KDUMP_COMMANDLINE_REMOVE}` cmdline="${cmdline} ${KDUMP_COMMANDLINE_APPEND}" -- 2.4.3

3 4

Rebase kexec-tools to 2.0.11-1
by Dave Young 08 Nov '15

08 Nov '15

Hi, Simon released 2.0.11 today. I have rebased Fedora kexec-tools to 2.0.11 as well. http://koji.fedoraproject.org/koji/taskinfo?taskID=11753009 Please help to do some test, please report in case anything wrong. BTW, for makedumpfile, Atsushi said there's a problem about kernel 4.2 thus I'm waiting for his fix. It will be appreciated someone can test upstream makedumpfile 1.5.9 as well and check if there's more problem. Thanks Dave

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kexec November 2015