kexec July 2020

kexec@lists.fedoraproject.org

5 participants
15 discussions

[PATCHv2 0/4] trival fixes and improvement of pre.d/post.d hooks
by Pingfan Liu 16 Jul '20

16 Jul '20

v1 -> v2: 1. [1/4]: using rpm spec to install pre.d and post.d mandatory 2. [4/4]: improve commit log Pingfan Liu (4): kdumpctl: make the existence of pre.d and post.d mandatory kdumpctl: rely on the timestamp of scripts' directory to tell modification kdumpctl: remove executable checking on pre.d and post.d module-setup.sh: suppress false alarm dracut-module-setup.sh | 4 ++-- kdumpctl | 6 ++++-- kexec-tools.spec | 6 ++++++ 3 files changed, 12 insertions(+), 4 deletions(-) -- 2.25.4

3 7

[PATCH] kdump_pre: make notes more precise
by Pingfan Liu 15 Jul '20

15 Jul '20

Signed-off-by: Pingfan Liu <piliu(a)redhat.com> --- dracut-kdump.sh | 1 + kdump.conf | 2 +- kdump.conf.5 | 2 +- kexec-kdump-howto.txt | 2 +- 4 files changed, 4 insertions(+), 3 deletions(-) diff --git a/dracut-kdump.sh b/dracut-kdump.sh index c74c4b7..6f948fc 100755 --- a/dracut-kdump.sh +++ b/dracut-kdump.sh @@ -41,6 +41,7 @@ do_kdump_pre() fi fi + # if any script fails, it just raises warning and continues if [ -d /etc/kdump/pre.d ]; then for file in /etc/kdump/pre.d/*; do "$file" diff --git a/kdump.conf b/kdump.conf index ed78507..9f35e31 100644 --- a/kdump.conf +++ b/kdump.conf @@ -89,7 +89,7 @@ # after the dump process, runs immediately before it. # Exit status of this binary is interpreted as follows: # 0 - continue with dump process as usual -# non 0 - reboot the system +# non 0 - run the final action (reboot/poweroff/halt) # If /etc/kdump/pre.d directory exists, all files in # the directory are collectively sorted and executed in # lexical order, after binary or script specified diff --git a/kdump.conf.5 b/kdump.conf.5 index 9f2b2b6..c362963 100644 --- a/kdump.conf.5 +++ b/kdump.conf.5 @@ -127,7 +127,7 @@ as follows: .PP 0 - continue with dump process as usual .PP -non 0 - reboot the system +non 0 - run the final action (reboot/poweroff/halt) .PP If /etc/kdump/pre.d directory exists, all files in the directory are collectively sorted and executed in diff --git a/kexec-kdump-howto.txt b/kexec-kdump-howto.txt index 9b0fee2..2209e5a 100644 --- a/kexec-kdump-howto.txt +++ b/kexec-kdump-howto.txt @@ -553,7 +553,7 @@ Kdump Pre-Capture Executable It is possible to specify a custom script or binary you wish to run before capturing a vmcore. Exit status of this binary is interpreted: 0 - continue with dump process as usual -non 0 - reboot the system +non 0 - run the final action (reboot/poweroff/halt) If /etc/kdump/pre.d directory exists, all files in the directory are collectively sorted and executed in lexical order, after binary or script specified kdump_pre parameter is executed. -- 2.7.5

2 1

[PATCH] dracut-kdump.sh: exit shell when machine reboot
by Pingfan Liu 15 Jul '20

15 Jul '20

The following scenario is observed: kdump: kdump_pre script exited with non-zero status! [ 5.104841] systemd[1]: Shutting down. [ 5.122162] printk: systemd-shutdow: 27 output lines suppressed due to ratelimiting kdump: dump target is /dev/mapper/rhel_hpe--dl380pgen8--02--vm--12-root kdump: saving to /sysroot//var/crash/127.0.0.1-2020-06-27-03:55:01/ kdump: saving vmcore-dmesg.txt kdump: saving vmcore-dmesg.txt complete kdump: saving vmcore Checking for memory holes : [ 0.0 %] / Checking for memory holes : [100.0 %] | [ 5.516573] systemd-shutdown[1]: Syncing filesystems and block devices. [ 5.519515] systemd-shutdown[1]: Sending SIGTERM to remaining processes... It is caused by the following script if [ $? -ne 0 ]; then echo "kdump: kdump_pre script exited with non-zero status!" do_final_action fi When do_final_action runs, a systemd service is forked for reboot, then the subshell returns, and parent continues to execute. Place "exit 1" to stop executing and make kdump service failure. Signed-off-by: Pingfan Liu <piliu(a)redhat.com> --- dracut-kdump.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/dracut-kdump.sh b/dracut-kdump.sh index b71278d..c74c4b7 100755 --- a/dracut-kdump.sh +++ b/dracut-kdump.sh @@ -251,6 +251,8 @@ do_kdump_pre if [ $? -ne 0 ]; then echo "kdump: kdump_pre script exited with non-zero status!" do_final_action + # During systemd service to reboot the machine, stop this shell script running + exit 1 fi make_trace_mem "kdump saving vmcore" '1:shortmem' '2+:mem' '3+:slab' do_dump -- 2.7.5

3 4

[PATCH 0/5] trival fixes and improvement of pre.d/post.d hooks
by Pingfan Liu 06 Jul '20

06 Jul '20

Pingfan Liu (5): kdump.conf: fix grammar kdumpctl: make the existence of pre.d and post.d mandatory kdumpctl: rely on the timestamp of scripts' directory to tell modification kdumpctl: remove executable checking on pre.d and post.d module-setup.sh: suppress false alarm dracut-module-setup.sh | 4 ++-- kdump.conf | 2 +- kdumpctl | 24 ++++++++++-------------- 3 files changed, 13 insertions(+), 17 deletions(-) -- 2.7.5

4 14

[PATCH 0/4] use the option KEXEC_ARGS="-s" to enable the kexec file load
by Lianbo Jiang 30 Jun '20

30 Jun '20

This series includes four patches: [1] Revert "kdump-lib: switch to the kexec_file_load() syscall on x86_64 by default" [2] Revert "s390x: add kdump sysconfig option to use the kexec_file_load() syscall" [3] x86_64: enable the kexec file load by default [4] s390x: enable the kexec file load by default Let's restore the logic of secureboot status check, and remove the option 'KDUMP_FILE_LOAD=on|off'. We will use the option KEXEC_ARGS="-s" to enable the kexec file load by default, which can avoid failures when the secureboot is enabled. Lianbo Jiang (4): Revert "kdump-lib: switch to the kexec_file_load() syscall on x86_64 by default" Revert "s390x: add kdump sysconfig option to use the kexec_file_load() syscall" x86_64: enable the kexec file load by default s390x: enable the kexec file load by default dracut-early-kdump.sh | 5 ++--- kdump-lib.sh | 29 +++++++++++++++++++++++++++++ kdump.sysconfig.s390x | 8 +------- kdump.sysconfig.x86_64 | 8 +------- kdumpctl | 13 ++++++------- 5 files changed, 39 insertions(+), 24 deletions(-) -- 2.17.1

2 6

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

kexec July 2020