Fedora xen - May 2008 - Dump guest memory in Xen?

I might be missing something obvious but ...

QEMU has a nice ''memsave'' command which lets you save/dump
parts of
guest memory to a file.  Is there a similar feature in Xen?

(Note I don''t want to dump all memory to a core file, just snoop on
small sections of memory).

Rich.

-- 
Richard Jones, Emerging Technologies, Red Hat  http://et.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
http://et.redhat.com/~rjones/virt-p2v

On Mon, 2008-05-19 at 16:29 +0100, Richard W.M. Jones
wrote:
> I might be missing something obvious but ...
> 
> QEMU has a nice ''memsave'' command which lets you
save/dump parts of
> guest memory to a file.  Is there a similar feature in Xen?
> 
> (Note I don''t want to dump all memory to a core file, just snoop
on
> small sections of memory).
Don''t know of a tool to do that, but you can map the guest''s
memory
using the xc_map_foreign_*() API.

Take a look at xen/tools/xentrace/xenctx.c to see how it pokes around in
guest memory when dumping a stack trace.

Cheers,
Mark.