1 files changed, 121 insertions, 0 deletions
diff --git a/tests/qemu-iotests/264 b/tests/qemu-iotests/264
new file mode 100755
index 000000000..bc431d1a1
--- /dev/null
+++ b/tests/qemu-iotests/264
@@ -0,0 +1,121 @@
+#!/usr/bin/env python3
+# group: rw
+#
+# Test nbd reconnect
+#
+# Copyright (c) 2019 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 time
+import os
+
+import iotests
+from iotests import qemu_img_create, file_path, qemu_nbd_popen
+
+disk_a, disk_b, nbd_sock = file_path('disk_a', 'disk_b', 'nbd-sock')
+nbd_uri = 'nbd+unix:///?socket=' + nbd_sock
+wait_limit = 3.0
+wait_step = 0.2
+
+
+class TestNbdReconnect(iotests.QMPTestCase):
+    def init_vm(self, disk_size):
+        qemu_img_create('-f', iotests.imgfmt, disk_a, str(disk_size))
+        qemu_img_create('-f', iotests.imgfmt, disk_b, str(disk_size))
+        self.vm = iotests.VM().add_drive(disk_a)
+        self.vm.launch()
+        self.vm.hmp_qemu_io('drive0', 'write 0 {}'.format(disk_size))
+
+    def tearDown(self):
+        self.vm.shutdown()
+        os.remove(disk_a)
+        os.remove(disk_b)
+
+    def start_job(self, job):
+        """Stat job with nbd target and kill the server"""
+        assert job in ('blockdev-backup', 'blockdev-mirror')
+        with qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b):
+            result = self.vm.qmp('blockdev-add',
+                                 **{'node_name': 'backup0',
+                                    'driver': 'raw',
+                                    'file': {'driver': 'nbd',
+                                             'server': {'type': 'unix',
+                                                        'path': nbd_sock},
+                                             'reconnect-delay': 10}})
+            self.assert_qmp(result, 'return', {})
+            result = self.vm.qmp(job, device='drive0',
+                                 sync='full', target='backup0',
+                                 speed=(1 * 1024 * 1024))
+            self.assert_qmp(result, 'return', {})
+
+            # Wait for some progress
+            t = 0.0
+            while t < wait_limit:
+                jobs = self.vm.qmp('query-block-jobs')['return']
+                if jobs and jobs[0]['offset'] > 0:
+                    break
+                time.sleep(wait_step)
+                t += wait_step
+
+            self.assertTrue(jobs and jobs[0]['offset'] > 0)  # job started
+
+        jobs = self.vm.qmp('query-block-jobs')['return']
+        # Check that job is still in progress
+        self.assertTrue(jobs)
+        self.assertTrue(jobs[0]['offset'] < jobs[0]['len'])
+
+        result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0)
+        self.assert_qmp(result, 'return', {})
+
+        # Emulate server down time for 1 second
+        time.sleep(1)
+
+    def test_backup(self):
+        size = 5 * 1024 * 1024
+        self.init_vm(size)
+        self.start_job('blockdev-backup')
+
+        with qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b):
+            e = self.vm.event_wait('BLOCK_JOB_COMPLETED')
+            self.assertEqual(e['data']['offset'], size)
+            result = self.vm.qmp('blockdev-del', node_name='backup0')
+            self.assert_qmp(result, 'return', {})
+
+    def cancel_job(self):
+        result = self.vm.qmp('block-job-cancel', device='drive0', force=True)
+        self.assert_qmp(result, 'return', {})
+
+        start_t = time.time()
+        self.vm.event_wait('BLOCK_JOB_CANCELLED')
+        delta_t = time.time() - start_t
+        self.assertTrue(delta_t < 2.0)
+
+    def test_mirror_cancel(self):
+        # Mirror speed limit doesn't work well enough, it seems that mirror
+        # will run many parallel requests anyway. MAX_IN_FLIGHT is 16 and
+        # MAX_IO_BYTES is 1M in mirror.c, so let's use 20M disk.
+        self.init_vm(20 * 1024 * 1024)
+        self.start_job('blockdev-mirror')
+        self.cancel_job()
+
+    def test_backup_cancel(self):
+        self.init_vm(5 * 1024 * 1024)
+        self.start_job('blockdev-backup')
+        self.cancel_job()
+
+
+if __name__ == '__main__':
+    iotests.main(supported_fmts=['qcow2'])