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#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 | |||
core_collector makedumpfile --nosuchoptions | |||
default halt </pre> | |||
#Apply changes and start kdump via service kdump restart | #Apply changes and start kdump via service kdump restart | ||
|actions= | |actions= | ||
Revision as of 07:53, 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
- Test failed if
cat /proc/cmdline | grep "crashkernel"
got nothing means reserve crashkernel memory failed - Test failed if restart kdump failed
- Test suspend if rpm packages couldn't be installed