[Xen-users] How to read text buffer after kernel crash?

[sinan polat <aciliketcap@xxxxxxxxx>]

Hi, this is my first post in this list.

I'm trying to run Xen 4.1.1 with Gentoo (Linux 3.3.8) as Dom0, however it crashes and prints stack trace for swapper/0 process. 

I can't read anything since stack trace fills the screen and can't scroll up to see preceding messages (even with noreboot parameter). How can I read the output? I only have one computer with me so serial console is not an option. Can I take console output printed into a log file?

I used Xen with SuSE Linux back in the day and we used kexec/kdump to gather crash info. I can setup kdump on Dom0 but can it catch the crash dump of hypervisor? (it crashes before linux kernel loads I guess) I read somewhere Xen 4.1.2 can do it, what about Xen 4.1.1? 

I need to learn a little bit about Xen debugging before I can post the real problem I guess.

Thank you,
Sinan Akpolat


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