[Xen-devel] Re: Dom0 Panics/lockups

["Shaun" <mailinglists@xxxxxxxxxxxxxxxx>]

Here's a xm info, hope that gives you everything you need.  What does this 
lowmem_emergency_pool=16M do and why is it needed?  Is the problem a memory 
issue?  This host has 8GB, 1GB allocated to dom0 and about 6GB allocated to 
DomU's

release                : 2.6.16-xen0
version                : #2 SMP Wed Apr 12 15:23:41 PDT 2006
machine                : i686
nr_cpus                : 2
nr_nodes               : 1
sockets_per_node       : 2
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 3000
hw_caps                : bfebfbff:20000000:00000000:00000180:0000641d
total_memory           : 8192
free_memory            : 1840
xen_major              : 3
xen_minor              : 0
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_32p
platform_params        : virt_start=0xf5800000
xen_changeset          : Thu Mar 30 17:50:44 2006 +0100 9487:9316fe0c9c4f
cc_compiler            : gcc version 3.4.5 20051201 (Red Hat 3.4.5-2)
cc_compile_by          : root
cc_compile_domain      : localdomain
cc_compile_date        : Mon Apr 10 22:44:44 PDT 2006


-- 

~Shaun



"Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> wrote in message 
news:2111d9e07819fa86d5dcf001c649026d@xxxxxxxxxxxxxxx
>
> On 18 Jun 2006, at 22:21, Shaun wrote:
>
>> Weird issue where on one of my hosts dom0 partially locks up.  Whats 
>> weird
>> is that alot of things work still and all domU's are running fine.  SSHD
>> locks up on dom0 and cannot be restarted a xm works fine too.  Here is a
>> dump from dmesg that i think is what started the whole mess.
>>
>> bwmonitor is a perl script i wrote that basically loops through all 
>> chains
>> (2 chains per domU) running ebtables -L <chain> grabs the rates and 
>> writes
>> them to a database, simple script...  From what i can tell this dump 
>> looks
>> like it may be a issue with xen and ebtables?
>
> Which Xen version are you running? You probably need to specify 
> lowmem_emergency_pool=16M, or similar, on the Xen command line.
>
>  -- Keir 




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