iotests.py: filter compression type out

We want iotests pass with both the default zlib compression and with
IMGOPTS='compression_type=zstd'.

Actually the only test that is interested in real compression type in
test output is 287 (test for qcow2 compression type) and it's in bash.
So for now we can safely filter out compression type in all qcow2
tests.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-11-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

tests/qemu-iotests/206.out

@@ -18,7 +18,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -42,7 +42,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -66,7 +66,7 @@ virtual size: 32 MiB (33554432 bytes)
 cluster_size: 2097152
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 1
     corrupt: false
@@ -92,7 +92,7 @@ backing file: TEST_IMG.base
 backing file format: IMGFMT
 Format specific information:
     compat: 0.10
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     refcount bits: 16
 
 === Successful image creation (encrypted) ===
@@ -109,7 +109,7 @@ encrypted: yes
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     encrypt:

tests/qemu-iotests/242.out

@@ -12,7 +12,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -34,7 +34,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -68,7 +68,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -110,7 +110,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -161,7 +161,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:

tests/qemu-iotests/274.out

@@ -50,7 +50,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -79,7 +79,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -114,7 +114,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -141,7 +141,7 @@ virtual size: 2 MiB (2097152 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -176,7 +176,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false

tests/qemu-iotests/iotests.py

@@ -497,6 +497,8 @@ def filter_img_info(output, filename):
                       'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX',
                       line)
         line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
+        line = re.sub('(compression type: )(zlib|zstd)', r'\1COMPRESSION_TYPE',
+                      line)
         lines.append(line)
     return '\n'.join(lines)