Re: [Xen-users] Please advise re 'on_crash' parameter.

[Steve Wray <steve.wray@xxxxxxxxx>]

Nick Couchman wrote:
> > > > On 2009/10/28 at 16:42, Luke S Crawford <lsc@xxxxxxxxx> wrote:
> > Steve Wray <steve.wray@xxxxxxxxx> writes:
> >
> > > Is there anyone on this list who can advise regarding the
> > > functionality of 'on_crash' in the domU configuration?
> > unless you are doing development and are way more handy than I am with a 
> > memory dump, you almost certainly want 'on_crash reboot'  
> Perhaps, but maybe not...I guess it depends on what types of "crashes" you experience.  In my case, a crash 
> usually means "continuous reboot", so I'd much rather have on_crash set to "destroy" than 
> "reboot" as I'd rather not have Xen sit there and constantly reboot a machine that crashes - usually a 
> Windows machine that's done an update and is BSODing, rebooting, BSODing, etc.
The problem I've been seeing is with a Linux pvm domU which has been set to 
on_crash reboot but which on a crash doesn't reboot.
According to the Xen logs, when Xen tries to reboot it, it finds that the 
domain already exists so it bails out of the reboot.
I'm puzzled, any insight would be valuable.

I did post entries from the logs in another mail to the list, but got no 
responses to that one.


> -Nick
>
> > for sysadmin level debugging of DomUs, start xenconsoled with --log=all 
> > or so, and it will record the console  of the DomU, which is usually enough
> > to figure out what happened.  
> >
> > --
> > Luke S. Crawford
> > http://prgmr.com/xen/         -   Hosting for the technically adept
> > http://nostarch.com/xen.htm   -   We don't assume you are stupid.  
>
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