Hi Coiby Xu, I have not yet resolved this so far. I could get it working once and thereafter I could not reproduce it. So I do not have a deterministic step to reproduce this. Still WIP from my end. I have already posted the question to kxec folkes: http://lists.infradead.org/pipermail/kexec/2022-May/024919.html. Will also post the bug to redhat. Thanks Arshad On Tue, Jun 7, 2022 at 8:05 AM Coiby Xu <coxu@xxxxxxxxxx> wrote: > > Hi, > > Have you resolved this issue? If not, feel free to open a bug on > https://bugzilla.redhat.com since /etc/kdump/pre.d/ is a feature > provided by Fedora/RHEL's kexec-tools. > > > On Wed, May 11, 2022 at 01:42:40PM +0530, arshad hussain wrote: > >Hello, > > > >I am trying to run a custom script before the dump (ie > >/etc/kdump/pre.d/* ) which I am unable to do. > >I can say this, as the script is supposed to create a folder under > >/var/crash and a file which it is not. It also does not generate the > >vmcore file. > > > >I am failing to understand what obvious step I am missing. Can someone > >please help out. > > > >While the "echo c > /proc/sysrq-trigger" successfully reboots the > >output is not what is expected. > > > >Here is my setup for kdump/kexec. > > > >Thanks! > > > >-------Expected output------- > >01. Under /var/crash we should be having a folder as "DBGMSG-<date>". > >02. Under /var/crash we should be having a file as "test512". > >03. vmcore file > >04. dmesg file > > > >-------current output------- > >Nothing under /var/crash > > > >-------Below are the info and conf script details------- > ># uname -a (Kernel version) > >Linux rocky8 4.18.0-240.1.1.el8.x86_64 #1 SMP Fri Feb 19 20:41:01 UTC > >2021 x86_64 x86_64 x86_64 GNU/Linux > > > ># rpm -qa | grep -i kexec (kexec-tool version) > >kexec-tools-2.0.20-46.el8.x86_64 > > > ># cat /proc/cmdline > >BOOT_IMAGE=(hd0,msdos1)/boot/vmlinuz-4.18.0-240.1.1.el8.x86_64 > >root=UUID=<UUID...> ro crashkernel=128M resume=UUID=<UUID...> > > > > > >------/etc/kdump.conf------- > >path /var/crash > >core_collector makedumpfile -l --message-level 7 -d 31 > >extra_bins /var/crash/kdumppre.sh /bin/bash /usr/bin/cat /usr/bin/date > >kdump_pre /var/crash/kdumppre.sh > >force_rebuild 1 > > > ># tree /etc/kdump/ > >/etc/kdump/ > >├── post.d > >└── pre.d > > └── 50-collect.sh > > > >-------/etc/kdump/pre.d/50-collect.sh------- > >#!/bin/bash > > > ># base location > >LOC=/sysroot/var/crash > ># dbgmsg identifier string > >DBGMSG="DBGMSG" > ># log file > >LFILE=log.out > ># Granularity in seconds > >LOCFOLDER=${LOC}/$DBGMSG-$(date +%Y-%m-%d:%H:%M:%S) > > > ># Create folder. > >mkdir -p $LOCFOLDER > > > >if [ -f "/proc/spl/kstat/zfs/dbgmsg" ]; then > > echo "/proc/spl/kstat/zfs/dbgmsg found" >> $LOCFOLDER/$LFILE > > cat /proc/spl/kstat/zfs/dbgmsg >> $LOCFOLDER/$LFILE > >else > > echo "/proc/spl/kstat/zfs/dbgmsg not found" >> $LOCFOLDER/$LFILE > >fi > > > >exit 0 > > > >-------/var/crash/kdumppre.sh------- > >#!/bin/bash > >echo "Test512.......$(date)" >> /sysroot/var/carsh/test512 > >exit 0 > > > > > >(Lines starting with [Debug] is the debug statement put for debugging > >to verify if we are picking up correct key=value pairs) > ># kdumpctl restart > >kdump: DEFAULT_DUMP_MODE=kdump > >kdump: kexec: unloaded kdump kernel > >kdump: Stopping kdump: [OK] > >[DEBUG]found config... path : /var/crash > >[DEBUG]found config... core_collector : makedumpfile -l --message-level 7 -d 31 > >[DEBUG]found config... extra_bins : /var/crash/kdumppre.sh /bin/bash > >/usr/bin/cat /usr/bin/date > >[DEBUG]found config... kdump_pre : /var/crash/kdumppre.sh > >[DEBUG]found config... force_rebuild : 1 > >kdump: restore default initrd: > >/boot/initramfs-4.18.0-240.1.1.el8_lustre.x86_64.img > >[DEBUG]files=/etc/kdump.conf > >/boot/vmlinuz-4.18.0-240.1.1.el8_lustre.x86_64 /var/crash/kdumppre.sh > >/var/crash/kdumppre.sh /bin/bash /usr/bin/cat /usr/bin/date > >/usr/sbin/makedumpfile > >[DEBUG]hook files=/etc/kdump.conf > >/boot/vmlinuz-4.18.0-240.1.1.el8_lustre.x86_64 /var/crash/kdumppre.sh > >/var/crash/kdumppre.sh /bin/bash /usr/bin/cat /usr/bin/date > >/usr/sbin/makedumpfile /etc/fstab /etc/kdump/post.d/ /etc/kdump/pre.d/ > > /etc/kdump/pre.d/50-collect.sh :: /etc/kdump/post.d/ > >/etc/kdump/pre.d/ /etc/kdump/pre.d/50-collect.sh > >kdump: Detected change(s) in the following file(s): /etc/kdump/pre.d/ > >kdump: Force rebuild /boot/initramfs-4.18.0-240.1.1.el8_lustre.x86_64kdump.img > >kdump: Rebuilding /boot/initramfs-4.18.0-240.1.1.el8_lustre.x86_64kdump.img > >kdump: rebuild kdump initrd: /sbin/mkdumprd -f > >/boot/initramfs-4.18.0-240.1.1.el8_lustre.x86_64kdump.img > >4.18.0-240.1.1.el8_lustre.x86_64 > >kdump: /sbin/kexec -s -d -p > >--command-line=BOOT_IMAGE=(hd0,msdos1)/boot/vmlinuz-4.18.0-240.1.1.el8_lustre.x86_64 > >ro resume=UUID=d5fad714-147f-419c-a8ea-9e7984b0ef2f 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 nokaslr novmcoredd hest_disable > >disable_cpu_apicid=0 > >--initrd=/boot/initramfs-4.18.0-240.1.1.el8_lustre.x86_64kdump.img > >/boot/vmlinuz-4.18.0-240.1.1.el8_lustre.x86_64 > >kdump: kexec: loaded kdump kernel > >kdump: Starting kdump: [OK] > > > >_______________________________________________ > >kexec mailing list > >kexec@xxxxxxxxxxxxxxxxxxx > >http://lists.infradead.org/mailman/listinfo/kexec > > -- > Best regards, > Coiby > _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
