** Changed in: makedumpfile (Debian)
Status: Unknown => New
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https://bugs.launchpad.net/bugs/1845048
Title:
Improve sysctl handling on kdump-tools
Status in makedumpfile package in Ubuntu:
Confirmed
Status in makedumpfile source package in Xenial:
Confirmed
Status in makedumpfile source package in Bionic:
Confirmed
Status in makedumpfile source package in Eoan:
Confirmed
Status in makedumpfile source package in Focal:
Confirmed
Status in makedumpfile package in Debian:
New
Bug description:
[impact]
Documentation, and past behavior, for kdump-tools was that the
KDUMP_SYSCTL variable in the /etc/default/kdump-tools file would be
applied to the system kernel params at kdump 'load'. However this is
no longer true, and those params are no longer applied to the system's
kernel param settings.
[test case]
install linux-crashdump (and kdump-tools).
Edit the /etc/default/kdump-tools file to set the KDUMP_SYSCTL param
to something other than default, e.g.:
KDUMP_SYSCTL="kernel.panic_on_oops=1 kernel.panic_on_warn=1"
reboot, or unload/reload kdump, to pick up the changes to the file.
Check if the panic_on_warn param is set:
$ cat /proc/sys/kernel/panic_on_warn
0
the problem does not seem to be with sysctl, as manually calling it
does work:
$ KDUMP_SYSCTL="kernel.panic_on_oops=1 kernel.panic_on_warn=1"
$ cat /proc/sys/kernel/panic_on_warn
0
$ sudo sysctl -w $KDUMP_SYSCTL
kernel.panic_on_oops = 1
kernel.panic_on_warn = 1
$ cat /proc/sys/kernel/panic_on_warn
1
[regression potential]
TBD
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