[Xen-users] Xenned box becomes unresponsive

[Svoop <svoop@xxxxxxxxxxx>]

Hi

I'm running a i7-920 with 4G RAM and two SATA HDs in a softraid. Dom0
(Gentoo 2.6.32 with Xen patches from Suse) is pinned to 1 CPU and only one
DomU (Gentoo 2.6.31) is active. DomU's root partition is a 180GB ext4 file,
furthermore it has it's own physical 50GB partition for the swapfile, logs,
database etc. Xen is at 3.4.2 with routed networking.

Both Dom0 and DomU boot just fine, but after some hours without much load,
the machine becomes unresponsive and has to be resetted. (With unresponsive
I mean that you can't connect via SSH neither Dom0 nor DomU. I don't have
physical access to the hardware.) The logs however don't show anything odd
at all.

One thing I've noted: vmstat shows roughly 2000 context switches when the
machine is under no load at all.

I'm still pretty noob not (yet :-) experienced with debugging Xen issues,
therefore I was hoping someone with more insight could give me a few hints
as to in which direction I should research.

Many thanks!



host                   : boss
release                : 2.6.31-xen-r7
version                : #5 SMP Thu Dec 10 14:21:35 CET 2009
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2673
hw_caps                :
bfebfbff:28100800:00000000:00000340:0098e3bd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 8183
free_memory            : 5069
node_to_cpu            : node0:0-3
node_to_memory         : node0:5069
xen_major              : 3
xen_minor              : 4
xen_extra              : .2
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.3.4 (Gentoo 4.3.4 p1.0, pie-10.1.5) 
cc_compile_by          : root
cc_compile_date        : Thu Dec 10 13:11:35 CET 2009
xend_config_format     : 4 


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