1 files changed, 73 insertions, 0 deletions
diff --git a/tests/qemu-iotests/024.out b/tests/qemu-iotests/024.out
index 973a5a3711..e1e8eea863 100644
--- a/tests/qemu-iotests/024.out
+++ b/tests/qemu-iotests/024.out
@@ -171,4 +171,77 @@ read 65536/65536 bytes at offset 196608
 Offset          Length          File
 0               0x30000         TEST_DIR/subdir/t.IMGFMT
 0x30000         0x10000         TEST_DIR/subdir/t.IMGFMT.base_new
+
+=== Test rebase within one backing chain ===
+
+Creating backing chain
+
+Formatting 'TEST_DIR/subdir/t.IMGFMT.base_new', fmt=IMGFMT size=327680
+Formatting 'TEST_DIR/subdir/t.IMGFMT.base_old', fmt=IMGFMT size=262144 backing_file=TEST_DIR/subdir/t.IMGFMT.base_new backing_fmt=IMGFMT
+Formatting 'TEST_DIR/subdir/t.IMGFMT', fmt=IMGFMT size=327680 backing_file=TEST_DIR/subdir/t.IMGFMT.base_old backing_fmt=IMGFMT
+
+Fill backing files with data
+
+wrote 327680/327680 bytes at offset 0
+320 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 262144/262144 bytes at offset 0
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+Check the last cluster is zeroed in overlay before the rebase
+
+read 65536/65536 bytes at offset 262144
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+Rebase onto another image in the same chain
+
+Verify that data is read the same before and after rebase
+
+read 262144/262144 bytes at offset 0
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 262144
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+
+=== Test rebase with different cluster sizes ===
+
+Creating backing chain
+
+Formatting 'TEST_DIR/subdir/t.IMGFMT.base_new', fmt=IMGFMT size=393216
+Formatting 'TEST_DIR/subdir/t.IMGFMT.base_old', fmt=IMGFMT size=393216 backing_file=TEST_DIR/subdir/t.IMGFMT.base_new backing_fmt=IMGFMT
+Formatting 'TEST_DIR/subdir/t.IMGFMT', fmt=IMGFMT size=393216 backing_file=TEST_DIR/subdir/t.IMGFMT.base_old backing_fmt=IMGFMT
+image: TEST_DIR/subdir/t.IMGFMT
+file format: IMGFMT
+virtual size: 384 KiB (393216 bytes)
+cluster_size: 131072
+backing file: TEST_DIR/subdir/t.IMGFMT.base_old
+backing file format: IMGFMT
+
+Fill backing files with data
+
+wrote 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 65536/65536 bytes at offset 262144
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+Rebase onto another image in the same chain
+
+Verify that data is read the same before and after rebase
+
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 131072/131072 bytes at offset 131072
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 262144
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 327680
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+Verify that untouched cluster remains unallocated
+
+Offset          Length          File
+0               0x20000         TEST_DIR/subdir/t.IMGFMT
+0x40000         0x20000         TEST_DIR/subdir/t.IMGFMT
+
 *** done