[pve-devel] need help to debug random host freeze on multiple hosts

[Stefan Priebe - Profihost AG]

What about magic sysrq ? Does that still react? Screen frozen or black?

Stefan

Excuse my typo sent from my mobile phone.

> Am 28.12.2014 um 17:37 schrieb Alexandre DERUMIER <aderumier at odiso.com>:
> 
> Hi,
> 
> I have random host freeze since around 1 week,
> 
> all hosts are opteron 63XX or 61XX.
> 
> kernel is pve-kernel-3.10-4 or pve-kernel-3.10-5, qemu 2.1.
> 
> They were all fine since months.
> 
> I have also tried last rhel 7.1beta kernel with no success.
> 
> 
> I really don't known how to debug that, because the system freeze, and I don't have any kernel panic output in display or serial.
> 
> 
> Can somebody help me to add something to have debug output ?
> 
> I have see some doc about kdump
> http://wiki.incloudus.com/display/DOC/Debian+-+Kdump
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-kdump-configuration-cli.html
> 
> Is it the best option I have to have some debug info ?
> 
> 
> 
> 
> 
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