kdump support #3722
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kdump support #3722
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as possible to understand and identify the root cause of the crash. Currently, the kernel does not provide much information, which make kernel crash investigation difficult and time consuming. Fortunately, there is a way in the kernel to provide more information in the case of a kernel crash. kdump is a feature of the Linux kernel that creates crash dumps in the event of a kernel crash. This PR will add kermel kdump support. An extension to the CLI utilities config and show is provided to configure and manage kdump: - enable / disable kdump functionality - configure kdump (how many kernel crash logs can be saved, memory allocated for capture kernel) - view kernel crash logs
lguohan
reviewed
Nov 7, 2019
lguohan
approved these changes
Nov 9, 2019
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retest broadcom please |
banagiri
reviewed
Dec 23, 2019
| @@ -160,6 +160,10 @@ sudo dpkg --root=$FILESYSTEM_ROOT -i $debs_path/libnss-tacplus_*.deb || \ | |||
| sudo LANG=C chroot $FILESYSTEM_ROOT pam-auth-update --remove tacplus | |||
| sudo sed -i -e '/^passwd/s/ tacplus//' $FILESYSTEM_ROOT/etc/nsswitch.conf | |||
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| # Install a custom version of kdump-tools (and its dependencies via 'apt-get -y install -f') | |||
| sudo DEBIAN_FRONTEND=noninteractive dpkg --root=$FILESYSTEM_ROOT -i $debs_path/kdump-tools_*.deb || \ | |||
| sudo LANG=C DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=truechroot $FILESYSTEM_ROOT apt-get -q --no-install-suggests --no-install-recommends --force-no install | |||
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space is missing for the option and the command DEBCONF_NONINTERACTIVE_SEEN=truechroot
zhenggen-xu
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Jan 10, 2020
* In the event of a kernel crash, we need to gather as much information as possible to understand and identify the root cause of the crash. Currently, the kernel does not provide much information, which make kernel crash investigation difficult and time consuming. Fortunately, there is a way in the kernel to provide more information in the case of a kernel crash. kdump is a feature of the Linux kernel that creates crash dumps in the event of a kernel crash. This PR will add kermel kdump support. An extension to the CLI utilities config and show is provided to configure and manage kdump: - enable / disable kdump functionality - configure kdump (how many kernel crash logs can be saved, memory allocated for capture kernel) - view kernel crash logs
lguohan
pushed a commit
to sonic-net/sonic-utilities
that referenced
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Jan 25, 2020
In the event of a kernel crash, we need to gather as much information as possible to understand and identify the root cause of the crash. Currently, the kernel does not provide much information, which make kernel crash investigation difficult and time consuming. Fortunately, there is a way in the kernel to provide more information in the case of a kernel crash. kdump is a feature of the Linux kernel that creates crash dumps in the event of a kernel crash. This PR will add kernel kdump support. Please note that there is another PR in sonic-utilities which is also needed: sonic-net/sonic-buildimage#3722 An extension to the CLI utilities config and show is provided to configure and manage kdump: view kdump status (enabled/disabled, active, configuration, stored crash files) enable / disable kdump functionality configure kdump (how many kernel crash logs can be saved, memory allocated for capture kernel) view kernel crash logs There is a design document which describes this kdump implementation: sonic-net/SONiC#510
malletvapid23
added a commit
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that referenced
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Aug 3, 2023
In the event of a kernel crash, we need to gather as much information as possible to understand and identify the root cause of the crash. Currently, the kernel does not provide much information, which make kernel crash investigation difficult and time consuming. Fortunately, there is a way in the kernel to provide more information in the case of a kernel crash. kdump is a feature of the Linux kernel that creates crash dumps in the event of a kernel crash. This PR will add kernel kdump support. Please note that there is another PR in sonic-utilities which is also needed: sonic-net/sonic-buildimage#3722 An extension to the CLI utilities config and show is provided to configure and manage kdump: view kdump status (enabled/disabled, active, configuration, stored crash files) enable / disable kdump functionality configure kdump (how many kernel crash logs can be saved, memory allocated for capture kernel) view kernel crash logs There is a design document which describes this kdump implementation: sonic-net/SONiC#510
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In the event of a kernel crash, we need to gather as much information as possible to understand and identify the root cause of the crash. Currently, the kernel does not provide much information, which make kernel crash investigation difficult and time consuming.
Fortunately, there is a way in the kernel to provide more information in the case of a kernel crash. kdump is a feature of the Linux kernel that creates crash dumps in the event of a kernel crash. This PR will add kernel kdump support. Please note that there is another PR in sonic-utilities which is also needed:
sonic-net/sonic-utilities#729
An extension to the CLI utilities config and show is provided to configure and manage kdump:
allocated for capture kernel)
There is a design document which describes this kdump implementation:
sonic-net/SONiC#510
- What I did
Added kdump support
- How I did it
Please read HLD:
sonic-net/SONiC#510
- How to verify it
config kdump enable
config save
reboot
echo 1 > /proc/sys/kernel/sysrq ; echo c > /proc/sysrq-trigger
show kdump
show kdump log 1 20