On 10/13/16 at 04:16pm, Tong Li wrote:
This is a short documentation on how to setup kdump on live images.
All steps
was tested on Fedora 25 Alpha LiveCD and successfully saved vmcore captured
by kdump to a USB stick.
Signed-off-by: Tong Li <tonli(a)redhat.com>
---
live-image-kdump-howto.txt | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 live-image-kdump-howto.txt
diff --git a/live-image-kdump-howto.txt b/live-image-kdump-howto.txt
new file mode 100644
index 0000000..e57e75b
--- /dev/null
+++ b/live-image-kdump-howto.txt
@@ -0,0 +1,23 @@
+Kdump now works on live images with some manual configurations. Here is the step
+by step guide.
+
+1. Enable crashkernel reservation
+
+Since there isn't any config files that can be used for adding kernel parameters
+for Live images, we have to append 'crashkernel' argument in boot menu every
+time we boot a Live image.
+
+2. Change dump target in /etc/kdump.conf
+
+When kdump kernel boots in a live environment, the default target /var/crash is
~into
+in in ram so you need change the dump target to an external disk or
an network
~~duplicate
> +dump target.
> +
> +3. Start kdump service
> +
> + $ kdumpctl start
> +
> +4. Trigger a kdump test
> +
> + $ echo 1 > /proc/sys/kernel/sysrq
> + $ echo c > /proc/sysrq-trigger
> --
> 2.7.4
> _______________________________________________
> kexec mailing list -- kexec(a)lists.fedoraproject.org
> To unsubscribe send an email to kexec-leave(a)lists.fedoraproject.org