block: qemu-iotests - test for live migration

This is an initial, simple live migration test from one
running VM to another, using monitor commands.

This is also an example of using the new common.qemu functions
for controlling multiple running qemu instances, for tests that
need a live qemu vm.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/qemu-iotests/091.out b/tests/qemu-iotests/091.out
new file mode 100644
index 0000000..a2e0122
--- /dev/null
+++ b/tests/qemu-iotests/091.out
@@ -0,0 +1,28 @@
+QA output created by 091
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+=== Starting QEMU VM1 ===
+
+
+=== Starting QEMU VM2 ===
+
+
+=== VM 1: Migrate from VM1 to VM2 ===
+
+vm1: qemu-io disk write complete
+vm1: live migration started
+vm1: live migration completed
+
+=== VM 2: Post-migration, write to disk, verify running ===
+
+vm2: qemu-io disk write complete
+vm2: qemu process running successfully
+vm2: flush io, and quit
+Check image pattern
+read 4194304/4194304 bytes at offset 0
+4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Running 'qemu-img check -r all $TEST_IMG'
+No errors were found on the image.
+80/16384 = 0.49% allocated, 0.00% fragmented, 0.00% compressed clusters
+Image end offset: 5570560
+*** done