[Xen-users] User domain hangs

[Marc McLaughlin <marc_mclaughlin@xxxxxxxxxxx>]

Hi there,
We have been experiencing occurrences of user domains hanging.  It has happened 
three times so far this year on the same VM.  The last time it occurred I 
noticed over 200k entries in the /var/log/xen/qemu-xxxxxxxxx.log of the 
following message :
track_dirty_vram(f0000000, 160) failed (-1, 22)
When the user domain hangs, you can still connect to the console via VNC but 
just get a static image.  There is no network access to the VM.
User domain is running Oracle 9.0.2 on Windows 2003 Enterprise Server R2 with 4 
VCPUs and 4 Gb RAM.  Domain 0 is running Xen 3.3.0 with Linux 2.6.24-28 on 
Ubuntu 8.04.4 LTS.  Hardware is a Dell PowerEdge R210 with a quad core Xeon 
X3450 and 8Gb RAM.
Can anyone shed any light on this problem?
Rgds,
Marc                                      
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