Re: [Xen-users] Problem with Dell Poweredge 1850

[Rob See <rob@xxxxxxxx>]

Ian,

	Yes I can hit Ctrl-a, press h, and I do see the help screen printed out 
when the machine is hung. What is the next step ?
Thanks,
-Rob

Ian Pratt wrote:
> >         
> > 	I seem to be experiencing the same problem that Michal 
> > Urbanski talked about in an email dated March 24th with a 
> > subject of "hanging dell hardware". Looking through the 
> > archives I can not find any resolution to the problem. The 
> > specs on my machine are
> > Dell Poweredge 1850
> > Dual Xeon 2.8s
> > 1gig ram
> > PERC 4e/SI raid controller in mirror configuration with 2 73 
> > gb drives (uses the megaraid_mm/megaraid_mbox modules)
>
> Have other people had more success with this PERC 4e/SI card? I know
> that the basic 1850 works fine under Xen.
>  
>
> > Any time the system is placed under high IO ( for example 
> > untar/bz2ing a tarball to create the fs for a xenU partiton) 
> > the machine hangs. There are no kernel messages. The console 
> > becomes completely unresponsive (pressing Caps lock does not 
> > change the status of the caps lock light) I can't use the 
> > magic sysreq key. I've tried adding "watchdog" to the end of 
> > the grub line that loads xen.gz. That didn't change anything. 
> > I've also tried disabling hyperthreading with no success. I'm 
> > using xen 2.0.5 with a 2.6.10 xen0 kernel. My raid controller 
> > bios is already at version 516a (the newest I can find on the 
> > dell site.) Does anyone have any more suggestions for me.
>
> Get a serial line on the machine, and boot a debug=y build of Xen with
> 'watchdog com1=115200,8n1' on the Xen command line.
>
> If you hit ctrl-a 3 times, and then 'h' you should get a help message.
> See if you still get this when the machine is in the wedged state.
>
> Ian

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