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authorMarc-André Lureau <marcandre.lureau@redhat.com>2020-03-30 19:48:52 +0200
committerDr. David Alan Gilbert <dgilbert@redhat.com>2020-05-07 17:40:24 +0100
commit979da8b357903ee8a43017cbf640f43460d1e2f0 (patch)
tree83d92d4751ad3a876a357f67a10ce56f9701baac /docs/devel/migration.rst
parent7ac5529afba7b4e9c4d9d1cbeb2b607208af97c1 (diff)
docs/devel/migration: start a debugging section
Explain how to use analyze-migration.py, this may help. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200330174852.456148-1-marcandre.lureau@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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@@ -50,6 +50,26 @@ All these migration protocols use the same infrastructure to
save/restore state devices. This infrastructure is shared with the
savevm/loadvm functionality.
+Debugging
+=========
+
+The migration stream can be analyzed thanks to `scripts/analyze_migration.py`.
+
+Example usage:
+
+.. code-block:: shell
+
+ $ qemu-system-x86_64
+ (qemu) migrate "exec:cat > mig"
+ $ ./scripts/analyze_migration.py -f mig
+ {
+ "ram (3)": {
+ "section sizes": {
+ "pc.ram": "0x0000000008000000",
+ ...
+
+See also ``analyze_migration.py -h`` help for more options.
+
Common infrastructure
=====================