Xen 3.0.1 Error creating domain: (12, 'Cannot allocate memory')

[Peter <peter.spamcatcher@rimuhosting.com>]

Hi.  I have a domU that refuses to start up.  It reports an error 
allocating memory.  There appears to be sufficient memory in dom0 as 
well as on the host.  I can restart other domUs no problem.

To resolve the issue I'm having to restart the whole server.  Which is a 
bit disruptive.

Details follow.

Regards, Peter

xm create -f /home/users/fullserviceasians2/params  extra="init=/bin/bash"
Using config file "/home/users/fullserviceasians2/params".
Warning: The nics option is deprecated.  Please use an empty vif entry 
instead:

   vif = [ '' ]

Error: Error creating domain: (12, 'Cannot allocate memory')
[root@host73 fullserviceasians2]# free -m
              total       used       free     shared    buffers     cached
Mem:           192        173         19          0         17         56
-/+ buffers/cache:         99         92
Swap:         2996          6       2989
[root@host73 fullserviceasians2]# xm info
system                 : Linux
release                : 2.6.12.6-xen0
version                : #2 Fri Feb 3 22:40:46 UTC 2006
machine                : i686
nr_cpus                : 2
nr_nodes               : 1
sockets_per_node       : 2
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 1994
hw_caps                : 078bfbff:e1d3fbff:00000000:00000010
total_memory           : 8192
free_memory            : 2902
xen_major              : 3
xen_minor              : 0
xen_extra              : .1
xen_caps               : xen-3.0-x86_32p
platform_params        : virt_start=0xf5800000
xen_changeset          : Tue Jan 31 11:04:12 2006 +0100 8738:eff96462fde8
cc_compiler            : gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)
cc_compile_by          : root
cc_compile_date        : Sat Feb  4 01:05:28 UTC 2006