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+#!/usr/bin/env python3
+#
+# Bench backup block-job
+#
+# Copyright (c) 2020 Virtuozzo International GmbH.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import argparse
+import json
+
+import simplebench
+from results_to_text import results_to_text
+from bench_block_job import bench_block_copy, drv_file, drv_nbd
+
+
+def bench_func(env, case):
+ """ Handle one "cell" of benchmarking table. """
+ cmd_options = env['cmd-options'] if 'cmd-options' in env else {}
+ return bench_block_copy(env['qemu-binary'], env['cmd'],
+ cmd_options,
+ case['source'], case['target'])
+
+
+def bench(args):
+ test_cases = []
+
+ sources = {}
+ targets = {}
+ for d in args.dir:
+ label, path = d.split(':') # paths with colon not supported
+ sources[label] = drv_file(path + '/test-source')
+ targets[label] = drv_file(path + '/test-target')
+
+ if args.nbd:
+ nbd = args.nbd.split(':')
+ host = nbd[0]
+ port = '10809' if len(nbd) == 1 else nbd[1]
+ drv = drv_nbd(host, port)
+ sources['nbd'] = drv
+ targets['nbd'] = drv
+
+ for t in args.test:
+ src, dst = t.split(':')
+
+ test_cases.append({
+ 'id': t,
+ 'source': sources[src],
+ 'target': targets[dst]
+ })
+
+ binaries = [] # list of (<label>, <path>, [<options>])
+ for i, q in enumerate(args.env):
+ name_path = q.split(':')
+ if len(name_path) == 1:
+ label = f'q{i}'
+ path_opts = name_path[0].split(',')
+ else:
+ assert len(name_path) == 2 # paths with colon not supported
+ label = name_path[0]
+ path_opts = name_path[1].split(',')
+
+ binaries.append((label, path_opts[0], path_opts[1:]))
+
+ test_envs = []
+
+ bin_paths = {}
+ for i, q in enumerate(args.env):
+ opts = q.split(',')
+ label_path = opts[0]
+ opts = opts[1:]
+
+ if ':' in label_path:
+ # path with colon inside is not supported
+ label, path = label_path.split(':')
+ bin_paths[label] = path
+ elif label_path in bin_paths:
+ label = label_path
+ path = bin_paths[label]
+ else:
+ path = label_path
+ label = f'q{i}'
+ bin_paths[label] = path
+
+ x_perf = {}
+ is_mirror = False
+ for opt in opts:
+ if opt == 'mirror':
+ is_mirror = True
+ elif opt == 'copy-range=on':
+ x_perf['use-copy-range'] = True
+ elif opt == 'copy-range=off':
+ x_perf['use-copy-range'] = False
+ elif opt.startswith('max-workers='):
+ x_perf['max-workers'] = int(opt.split('=')[1])
+
+ if is_mirror:
+ assert not x_perf
+ test_envs.append({
+ 'id': f'mirror({label})',
+ 'cmd': 'blockdev-mirror',
+ 'qemu-binary': path
+ })
+ else:
+ test_envs.append({
+ 'id': f'backup({label})\n' + '\n'.join(opts),
+ 'cmd': 'blockdev-backup',
+ 'cmd-options': {'x-perf': x_perf} if x_perf else {},
+ 'qemu-binary': path
+ })
+
+ result = simplebench.bench(bench_func, test_envs, test_cases, count=3)
+ with open('results.json', 'w') as f:
+ json.dump(result, f, indent=4)
+ print(results_to_text(result))
+
+
+class ExtendAction(argparse.Action):
+ def __call__(self, parser, namespace, values, option_string=None):
+ items = getattr(namespace, self.dest) or []
+ items.extend(values)
+ setattr(namespace, self.dest, items)
+
+
+if __name__ == '__main__':
+ p = argparse.ArgumentParser('Backup benchmark', epilog='''
+ENV format
+
+ (LABEL:PATH|LABEL|PATH)[,max-workers=N][,use-copy-range=(on|off)][,mirror]
+
+ LABEL short name for the binary
+ PATH path to the binary
+ max-workers set x-perf.max-workers of backup job
+ use-copy-range set x-perf.use-copy-range of backup job
+ mirror use mirror job instead of backup''',
+ formatter_class=argparse.RawTextHelpFormatter)
+ p.add_argument('--env', nargs='+', help='''\
+Qemu binaries with labels and options, see below
+"ENV format" section''',
+ action=ExtendAction)
+ p.add_argument('--dir', nargs='+', help='''\
+Directories, each containing "test-source" and/or
+"test-target" files, raw images to used in
+benchmarking. File path with label, like
+label:/path/to/directory''',
+ action=ExtendAction)
+ p.add_argument('--nbd', help='''\
+host:port for remote NBD image, (or just host, for
+default port 10809). Use it in tests, label is "nbd"
+(but you cannot create test nbd:nbd).''')
+ p.add_argument('--test', nargs='+', help='''\
+Tests, in form source-dir-label:target-dir-label''',
+ action=ExtendAction)
+
+ bench(p.parse_args())