[ovirt-users] shutdown and kernel panic

[Pavel Gashev]

Luigi,

It’s necessary to put a host into maintenance mode before shutdown.

That panic is a kernel reaction to NMI, which is triggered by hardware watchdog, which is set by wdmd daemon, which is used by sanlock. This scheme is intended to hardware reset a server if it has lost connection to its storage when lock is acquired.

On HP servers it’s necessary to configure watchdog to do hardware reset instead of NMI in BIOS settings.


From: <users-bounces at ovirt.org> on behalf of Juan Pablo <pablo.localhost at gmail.com>
Date: Wednesday 23 November 2016 at 17:17
To: Luigi Fanton <lfanton at synt.net>
Cc: "users at ovirt.org" <users at ovirt.org>
Subject: Re: [ovirt-users] shutdown and kernel panic

same issue here. I guess now that I read your post that its an HP bug 'somehow' (to blame someone).
maybe thats why ovirt asks for fencing interfaces as ilo/imm/ipmi, to hard reboot the server in case there's an issue like this.

just my 2c

2016-11-22 13:22 GMT-03:00 Luigi Fanton <lfanton at synt.net<mailto:lfanton at synt.net>>:
Hello to all,
I'm just playing with ovirt4, installed on HP server with CentOS 7, and a virtual machine  as host engine.
I have a lot of problems with the server shutdown!
The server dosn't power off and will reboot after some "kernel panic" error.

To turn off the ovirt server:
1) Put ovirt in global maintinience (hosted-engine --set-maintenance --mode=global)
2) Host engine shutdown and check vm-status
3) Finaly, shutdown server and wait ... wait ... wait
Whats wrong?! -_-

best regards
Luigi F.

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