[Fedora-xen] File operation causes kernel panic

[Eric Jacobshagen]

Hello,
I'm having a problem with a Dell server (PowerEdge 2850) and a recently 
installed Fedora Core 5 with Xen kernel (2.6.16-1.2096_FC5xen0).  Whenever 
I try to copy a larger file (128MB) to the server over the network, the 
server crashes (register dump on the console, remote sessions stop 
responding).

This happens consistently with Anaconda, Samba and WinSCP3.  It has 
happened with yum twice, although it works most of the time.

When I reboot the server with a kernel that does not include Xen 
(2.6.16-1.2096_FC5), the copying works.

I need some help figuring out what my next steps should be.  I don't see 
anything unusual in the xend.log (see below).  The xend-debug.log is 
empty.  Is there some other place I should look?  Are there any other 
diagnostic tools to use?

Thanks for you help.

Eric Jacobshagen
CONNECT: The Knowledge Network

xend.log:

[xend] INFO (SrvDaemon:285) Xend Daemon started
[xend] INFO (SrvDaemon:289) Xend changeset: unavailable .
[xend.XendDomainInfo] DEBUG (XendDomainInfo:199) 
XendDomainInfo.recreate({'paused': 0, 'cpu_time': 24271818792L, 'ssidref': 
0, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, , 0, 0, 0, 0, 0, 0], 
'shutdown_reason': 0, 'dying': 0, 'dom': 0, 'mem_kb': 524288, 'maxmem_kb': 
-4, 'max_vcpu_id': 1, 'crashed': 0, 'running': 1, 'shutdown': 0, 
'online_vcpus': 2, 'blocked': 0})
[xend.XendDomainInfo] INFO (XendDomainInfo:211) Recreating domain 0, UUID 
00000000-0000-0000-0000-000000000000.
[xend.XendDomainInfo] WARNING (XendDomainInfo:233) No vm path in store for 
existing domain 0
[xend.XendDomainInfo] DEBUG (XendDomainInfo:667) Storing VM details: 
{'ssidref': '0', 'uuid': '00000000-0000-0000-0000-000000000000', 
'on_reboot': 'restart', on_poweroff': 'destroy', 'name': 'Domain-0', 
'vcpus': '2', 'vcpu_avail': '3', 'memory': '512', 'on_crash': 'restart', 
'maxmem': '512'}
[xend.XendDomainInfo] DEBUG (XendDomainInfo:692) Storing domain details: 
{'cpu/0/availability': 'online', 'memory/target': '524288', 
'cpu/1/availability': 'online', 'name': 'Domain-0', 'console/limit': 
'1048576', 'vm': '/vm/00000000-0000-0000-0000-000000000000', 'domid':'0'}
[xend] DEBUG (XendDomain:151) number of vcpus to use is 0
[xend] INFO (SrvServer:114) unix path=/var/lib/xend/xend-socket