[pve-devel] Blacklisting HP hardware watchdog timer module ?

Alexandre DERUMIER aderumier at odiso.com
Fri Dec 4 06:37:22 CET 2015


I have added a new hardware watchdog section in the wiki (was before in troubleshotting)

https://pve.proxmox.com/wiki/High_Availability_Cluster_4.x#Hardware_Watchdogs

with new /etc/default/pve-ha-manager configuration file.


----- Mail original -----
De: "aderumier" <aderumier at odiso.com>
À: "dietmar" <dietmar at proxmox.com>
Cc: "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Vendredi 4 Décembre 2015 06:14:39
Objet: Re: [pve-devel] Blacklisting HP hardware watchdog timer module ?

I finally found how to disable watchdog management from dell openmanage. 

simply edit : 

/opt/dell/srvadmin/etc/srvadmin-isvc/ini/dcwddy64.ini 

and comment: 

;[HWC Configuration] 
;watchDogObj.settings=0 
;watchDogObj.expiryTime=480 


That's all. 


I'll add a note in the wiki. 


>>IMHO very dangerous - maybe better to use softdog instead? 

In think iTCO_wdt is a good one also, for intel motherboard (integrated in all ich chipsets) 


But ipmi can have some avantage with dell, like taking screenshot of kernel panic for example. 


----- Mail original ----- 
De: "dietmar" <dietmar at proxmox.com> 
À: "aderumier" <aderumier at odiso.com>, "pve-devel" <pve-devel at pve.proxmox.com> 
Envoyé: Jeudi 3 Décembre 2015 19:05:57 
Objet: Re: [pve-devel] Blacklisting HP hardware watchdog timer module ? 

> but after some minutes (5-10min), 
> I'm seeing it at 480s 

The assumption is that watchdog-mux is the only tool with access 
to the watchdog. I think the watchdog is quite useless if 
someone/something else can change or modify the watchdog timers. 
IMHO very dangerous - maybe better to use softdog instead? 
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