Re: [Xen-users] hvm boot causing dom0 to crash

[Mark Chaney <lists@xxxxxxxxxx>]

Nothing had changed on the dom0 that I know of. Other guests on running on that 
dom0 fine and its stable. Nothing happens until I try starting that hvm. As far 
as the HVM, I had run aptitude update/upgrade on it, but it the day before, but 
I had done that with the other debian hvm on the other dom0 and its not having 
issues. =/

- Mark 

----- Original Message -----
From: "Pasi KÃrkkÃinen" <pasik@xxxxxx>
To: "Mark Chaney" <lists@xxxxxxxxxx>
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Sent: Tuesday, July 20, 2010 7:30:13 AM
Subject: Re: [Xen-users] hvm boot causing dom0 to crash

On Tue, Jul 20, 2010 at 03:27:47AM -0500, Mark Chaney wrote:
> I am running Xen 3.4.3 on CentOS 5.5 x86_64, with kernel 
> 2.6.18-194.8.1.el5xen. My fully virtualized guest (HVM) is running Debian 5 
> with kernel 2.6.33 x86_64. The debian guest had been running for over 10 days 
> with no issues until i rebooted it. Now every time i try to start up the 
> guest, the entire dom0 crashes and reboots. Whats odd is that I have a very 
> similar debian guest (used the same appliance iso) running on another dom0 
> that is not having these same issues. They are at two different locations, so 
> I cant easily test the troublesome guest on a different dom0 and vice versa. 
> This last time i tried to start the guest it seemed to go almost through the 
> boot processes, but then suddenly rebooted the guest and it got all the way 
> to the starting firewall part before it crashed the dom0.
> 
> Below if the guests cfg if it helps:
> 
> name = "mailcleaner_ent_mx2"
> maxmem = 4096
> memory = 1024
> vcpus = 2
> builder = "hvm"
> kernel = "/usr/lib/xen/boot/hvmloader"
> boot = "c"
> pae = 1
> acpi = 1
> apic = 1
> localtime = 0
> on_poweroff = "destroy"
> on_reboot = "restart"
> on_crash = "restart"
> device_model = "/usr/lib64/xen/bin/qemu-dm"
> vfb = [ "type=vnc,vncunused=1,keymap=en-us" ]
> disk = [ "phy:/dev/VolGroup00/mailcleaner_ent_mx2,hda,w", ",hdc:cdrom,r" ]
> vif = [ "mac=00:16:36:47:cc:e3,bridge=eth0,script=vif-bridge,vifname=vif-1.0" 
> ]
> parallel = "none"
> serial = "pty"
> 
> 
> Any ideas on what I should be looking for? I really need to get this guest 
> back up ASAP as its the secondary mx mail server that im testing and it has 
> some email on it already that I need to deliver to my test accounts.
> 

Did you change something in the guest when it started crashing? Or something in 
the dom0? 
Are you sure your hardware is OK ? 

A guest should never crash host/hypervisor/dom0..

-- Pasi


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