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#After system installed, check if kexec-tools kernel-debuginfo and crash is installed via <pre>rpm -q kexec-tools</pre> Or via yum <pre>yum install kexec-tools</pre> | #After system installed, check if kexec-tools kernel-debuginfo and crash is installed via <pre>rpm -q kexec-tools</pre> Or via yum <pre>yum install kexec-tools</pre> | ||
#Reserve crashkernel for kdump by grubby <pre>grubby --args="crashkernl=128M" --update-kernel=$(grubby --default-kernel)</pre> Reboot system and check /proc/cmdline <pre>cat /proc/cmdline | grep "crashkernel"</pre> | #Reserve crashkernel for kdump by grubby <pre>grubby --args="crashkernl=128M" --update-kernel=$(grubby --default-kernel)</pre> Reboot system and check /proc/cmdline <pre>cat /proc/cmdline | grep "crashkernel"</pre> | ||
#Edit /etc/kdump.conf. This is an example: | #Edit /etc/kdump.conf. This is an example:<pre> ext4 /dev/mapper/vg_dhcp6558-lv_root</pre><pre>core_collector makedumpfile --nosuchoptions</pre><pre>default halt </pre> | ||
#Apply changes and start kdump via <pre>service kdump restart</pre> | #Apply changes and start kdump via <pre>service kdump restart</pre> | ||
|actions= | |actions= | ||
Latest revision as of 08:19, 22 March 2012
Description
Setup
- Install Fedora 17 on your machine
- After system installed, check if kexec-tools kernel-debuginfo and crash is installed via
rpm -q kexec-tools
Or via yumyum install kexec-tools
- Reserve crashkernel for kdump by grubby
grubby --args="crashkernl=128M" --update-kernel=$(grubby --default-kernel)
Reboot system and check /proc/cmdlinecat /proc/cmdline | grep "crashkernel"
- Edit /etc/kdump.conf. This is an example:
ext4 /dev/mapper/vg_dhcp6558-lv_root
core_collector makedumpfile --nosuchoptions
default halt
- Apply changes and start kdump via
service kdump restart
How to test
- Trigger crash via:
echo c > /proc/sysrq-trigger
Expected Results
- System halt