I know that this isn't a solution, but i will tell you only as a comment for
future decisions:

Long time ago, when i worked with Novell Netware, i had a problem of cache
in the AMD processor, so i had that disable it, and after, this server was
very slow, but was stable. Since that time i never recommended servers with
AMD processor.

Moreover, maybe will be good disable some flags to AMD processor and test it. How do it?, sincerely i don't know, but if you know it, please comment it here, as also your tests (if you can)

----- Original Message ----- From: "Alexandre DERUMIER" <aderum...@odiso.com>
To: "Cesar Peschiera" <br...@click.com.py>
Cc: "datanom.net" <m...@datanom.net>; "pve-devel" <pve-devel@pve.proxmox.com>
Sent: Monday, December 29, 2014 3:31 AM
Subject: Re: [pve-devel] need help to debug random host freeze on multiple
hosts


Maybe i ask you a silly question, did you see the syslog and kern.log
file?

Yes sure , I have nothing in logs.
(That's why I thinked of kdump to try to have more info).

I'll really don't known if it's a software real kernel panic, or a hardware
bug.

I just see on vmware forum some amd microcode bug, and see that dell provide
a new bios update this month.
I'll try to update to see if it's help.



----- Original Message ----- From: "Alexandre DERUMIER" <aderum...@odiso.com>
To: "datanom.net" <m...@datanom.net>
Cc: "pve-devel" <pve-devel@pve.proxmox.com>
Sent: Monday, December 29, 2014 1:49 AM
Subject: Re: [pve-devel] need help to debug random host freeze on multiple
hosts


Bad RAM stick?
Bad PSU?
Overheating of the CPU?

No errors reporting in dell Idrac.

(I have the problem on 6 differents nodes.....)

I was also thinking of electrical problem, but voltages don't report any
error.

Maybe the only difference is that I have more load currently on all my
nodes because of Xmas period
(We host a lot of ecommerce websites)
I'm around 60-70% load on this quad opteron platforms.


I'll try to implement kdump today.



----- Mail original ----- De: "datanom.net" <m...@datanom.net>
À: "pve-devel" <pve-devel@pve.proxmox.com>
Envoyé: Dimanche 28 Décembre 2014 19:02:04
Objet: Re: [pve-devel] need help to debug random host freeze on multiple
hosts

On Sun, 28 Dec 2014 17:37:50 +0100 (CET)
Alexandre DERUMIER <aderum...@odiso.com> wrote:


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 ?

Bad RAM stick?
Bad PSU?

--
Hilsen/Regards
Michael Rasmussen

Get my public GnuPG keys:
michael <at> rasmussen <dot> cc
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E
mir <at> datanom <dot> net
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
mir <at> miras <dot> org
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917
-------------------------------------------------------------- /usr/games/fortune -es says:
Bridge ahead. Pay troll.

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