[PATCH v2 6/8] simplebench/bench-backup: support qcow2 source files

[Vladimir Sementsov-Ogievskiy]

Add support for qcow2 source. New option says to use test-source.qcow2
instead of test-source. Of course, test-source.qcow2 should be
precreated.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 scripts/simplebench/bench-backup.py    | 5 +++++
 scripts/simplebench/bench_block_job.py | 7 ++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/scripts/simplebench/bench-backup.py 
b/scripts/simplebench/bench-backup.py
index fbc85f266f..a2120fcbf0 100755
--- a/scripts/simplebench/bench-backup.py
+++ b/scripts/simplebench/bench-backup.py
@@ -58,6 +58,8 @@ def bench(args):
 
         if src == 'nbd':
             source = nbd_drv
+        elif args.qcow2_sources:
+            source = drv_qcow2(drv_file(dirs[src] + '/test-source.qcow2'))
         else:
             source = drv_file(dirs[src] + '/test-source')
 
@@ -199,6 +201,9 @@ def __call__(self, parser, namespace, values, 
option_string=None):
 Use compressed backup. It automatically means
 automatically creating qcow2 target with
 lazy_refcounts for each test run''', action='store_true')
+    p.add_argument('--qcow2-sources', help='''\
+Use test-source.qcow2 images as sources instead of
+test-source raw images''', action='store_true')
     p.add_argument('--target-cache', help='''\
 Setup cache for target nodes. Options:
    direct: default, use O_DIRECT and aio=native
diff --git a/scripts/simplebench/bench_block_job.py 
b/scripts/simplebench/bench_block_job.py
index 71d2e489c8..4f03c12169 100755
--- a/scripts/simplebench/bench_block_job.py
+++ b/scripts/simplebench/bench_block_job.py
@@ -88,6 +88,11 @@ def get_image_size(path):
     return json.loads(out)['virtual-size']
 
 
+def get_blockdev_size(obj):
+    img = obj['filename'] if 'filename' in obj else obj['file']['filename']
+    return get_image_size(img)
+
+
 # Bench backup or mirror
 def bench_block_copy(qemu_binary, cmd, cmd_options, source, target):
     """Helper to run bench_block_job() for mirror or backup"""
@@ -101,7 +106,7 @@ def bench_block_copy(qemu_binary, cmd, cmd_options, source, 
target):
 
         subprocess.run(['qemu-img', 'create', '-f', 'qcow2',
                         target['file']['filename'],
-                        str(get_image_size(source['filename']))],
+                        str(get_blockdev_size(source))],
                        stdout=subprocess.DEVNULL,
                        stderr=subprocess.DEVNULL, check=True)
 
-- 
2.29.2