Revision as of 07:45, 22 March 2012

Description

Reserve crashkernel for kdump by grubby

grubby --args="crashkernl=128M" --update-kernel=$(grubby --default-kernel)

Reboot system and check /proc/cmdline

cat /proc/cmdline | grep "crashkernel"

:

    ext4 /dev/mapper/vg_dhcp6558-lv_root 
    kdump_post /bin/kdump-script
    extra_bins /usr/bin/crash
    extra_modules twofish-x86_64

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

@@ Line 3: / Line 3: @@
 |setup=
 #Install Fedora 17 on your machine
-#After system installed, check if kexec-tools kernel-debuginfo and crash is installed via <pre>rpm -q kexec-tools kernel-debuginfo crash</pre> Or via yum <pre>yum install kexec-tools kernel-debuginfo crash</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>
-#Edit /etc/kdump.conf, add this line:<pre> ext4 /dev/mapper/vg_dhcp6558-lv_root</pre><pre>core_collector makedumpfile -E -d 31</pre>
+#Edit /etc/kdump.conf. This is an example:
+    :<pre>    ext4 /dev/mapper/vg_dhcp6558-lv_root
+    kdump_post /bin/kdump-script
+    extra_bins /usr/bin/crash
+    extra_modules twofish-x86_64</pre>
 #Apply changes and start kdump via service kdump restart
 |actions=