[Xen-users] Problem with Saving a VM state

[George Lenzer <George.Lenzer@xxxxxxx>]

I've been helping a friend set up a Xen system using HVM.  He has an four way 
dual core Xeon box from Dell.  He's using Gentoo Linux as the base Linux OS (on 
my recommendation) and he's built his Xen-3.0.3 from the source tarball (as I 
do).  He's got win2k3 installed and running in a VM.  At my suggestion I got 
him to set the xendomains script to run at shutdown and startup so that his 
Windows VM will have it's state saved and restored automatically.  Everything 
is set up right and the system attempts to save/restore the VM.  But it wasn't 
working.  So I had him try to manually do the save and this is what we got:

# xm save 3 /test
Error: /usr/lib64/xen/bin/xc_save 17 3 0 0 0 failed
Usage: xm save <Domain> <CheckpointFile>

Save a domain state to restore later.


So I did some googling and found that there was a problem with the xc_save 
script and there was a patch to apply.  However that was for Xen older than 
3.0.3.  I manually checked as well and saw that the patch wasn't really in the 
Python code in the xc_save file.  So I modified the file by hand as there were 
only a few changes.  The resulting changes didn't seem to make a difference 
though.  He still can't save/restore this VM.  I haven't had him try with a 
linux domain yet just to make sure this isn't some odd interaction with 
Windows.  Has anyone else run into this problem with the Nov 3rd Xen-3.0.3 
build?  Should we grab the HG build instead?  The last time we did that it 
didn't work at all which is to be expected with "in development" code.  That's 
why I suggested the 3.0.3 version.  My suspicion is that this is really a 
simple problem.  Let me know if there is any further info that I should provide.

Thanks


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