[Xen-users] "Hard" hangs on several Intel(-chipset) boards

[Heiko Wundram <modelnine@xxxxxxxxxxxxx>]

Hey!

I'm deploying a vanilla Xen 4.1.2 installation at a hosting provider, 
and I'm experiencing hard hangs (i.e., the system is unresponsive to 
keystrokes, network is off, I/O to disk is stopped) on several of their 
available server packages, all based on Intel i7 CPUs and related chipsets.
The failure does not seem related to a specific Xen-version (I've 
experienced the same hangs with all [vanilla] Xens from 4.0.1 to 4.1.2), 
not related to the kernel (I've experienced the same hangs with a 
Xen-ified 2.6.38 from SuSE, and several vanilla 3.2-kernels with 
pv_ops), and not to the actual hardware in use (I've seen the same kind 
of hangs on an MSI X58 Pro-E [with an i7-950] and after swapping 
hardware also on an ASUS P8H67-M PRO [with an i7-2600]). The additional 
hardware specs (RAM type, Disks) are also different between several test 
systems (i.e., I've had access to systems with Samsung, Kingston, and 
F3-RAM).
As I've not been able to get a serial cable attached for in-depth 
debugging of Xen problems on the hangs (the hosting-provider is not very 
cooperative), is there anything else I can do to debug these hangs? Or, 
has anybody else experienced the same hangs?
Thanks for any hint!

--
--- Heiko.

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