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authorMax Reitz <mreitz@redhat.com>2018-06-13 20:18:23 +0200
committerMax Reitz <mreitz@redhat.com>2018-06-18 17:05:17 +0200
commite38da02091eeed56bb370ec9d72c4367d4e9ada3 (patch)
tree4873e48e955cda582dd62c2bb5680c032b59793e /tests/qemu-iotests/151
parent481debaa3270fb276dcf27205aa27ad52cc34590 (diff)
iotests: Add test for active mirroring
Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-id: 20180613181823.13618-15-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'tests/qemu-iotests/151')
-rwxr-xr-xtests/qemu-iotests/151120
1 files changed, 120 insertions, 0 deletions
diff --git a/tests/qemu-iotests/151 b/tests/qemu-iotests/151
new file mode 100755
index 0000000000..fe53b9f446
--- /dev/null
+++ b/tests/qemu-iotests/151
@@ -0,0 +1,120 @@
+#!/usr/bin/env python
+#
+# Tests for active mirroring
+#
+# Copyright (C) 2018 Red Hat, Inc.
+#
+# 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 os
+import iotests
+from iotests import qemu_img
+
+source_img = os.path.join(iotests.test_dir, 'source.' + iotests.imgfmt)
+target_img = os.path.join(iotests.test_dir, 'target.' + iotests.imgfmt)
+
+class TestActiveMirror(iotests.QMPTestCase):
+ image_len = 128 * 1024 * 1024 # MB
+ potential_writes_in_flight = True
+
+ def setUp(self):
+ qemu_img('create', '-f', iotests.imgfmt, source_img, '128M')
+ qemu_img('create', '-f', iotests.imgfmt, target_img, '128M')
+
+ blk_source = {'id': 'source',
+ 'if': 'none',
+ 'node-name': 'source-node',
+ 'driver': iotests.imgfmt,
+ 'file': {'driver': 'file',
+ 'filename': source_img}}
+
+ blk_target = {'node-name': 'target-node',
+ 'driver': iotests.imgfmt,
+ 'file': {'driver': 'file',
+ 'filename': target_img}}
+
+ self.vm = iotests.VM()
+ self.vm.add_drive_raw(self.vm.qmp_to_opts(blk_source))
+ self.vm.add_blockdev(self.vm.qmp_to_opts(blk_target))
+ self.vm.add_device('virtio-blk,drive=source')
+ self.vm.launch()
+
+ def tearDown(self):
+ self.vm.shutdown()
+
+ if not self.potential_writes_in_flight:
+ self.assertTrue(iotests.compare_images(source_img, target_img),
+ 'mirror target does not match source')
+
+ os.remove(source_img)
+ os.remove(target_img)
+
+ def doActiveIO(self, sync_source_and_target):
+ # Fill the source image
+ self.vm.hmp_qemu_io('source',
+ 'write -P 1 0 %i' % self.image_len);
+
+ # Start some background requests
+ for offset in range(1 * self.image_len / 8, 3 * self.image_len / 8, 1024 * 1024):
+ self.vm.hmp_qemu_io('source', 'aio_write -P 2 %i 1M' % offset)
+ for offset in range(2 * self.image_len / 8, 3 * self.image_len / 8, 1024 * 1024):
+ self.vm.hmp_qemu_io('source', 'aio_write -z %i 1M' % offset)
+
+ # Start the block job
+ result = self.vm.qmp('blockdev-mirror',
+ job_id='mirror',
+ filter_node_name='mirror-node',
+ device='source-node',
+ target='target-node',
+ sync='full',
+ copy_mode='write-blocking')
+ self.assert_qmp(result, 'return', {})
+
+ # Start some more requests
+ for offset in range(3 * self.image_len / 8, 5 * self.image_len / 8, 1024 * 1024):
+ self.vm.hmp_qemu_io('source', 'aio_write -P 3 %i 1M' % offset)
+ for offset in range(4 * self.image_len / 8, 5 * self.image_len / 8, 1024 * 1024):
+ self.vm.hmp_qemu_io('source', 'aio_write -z %i 1M' % offset)
+
+ # Wait for the READY event
+ self.wait_ready(drive='mirror')
+
+ # Now start some final requests; all of these (which land on
+ # the source) should be settled using the active mechanism.
+ # The mirror code itself asserts that the source BDS's dirty
+ # bitmap will stay clean between READY and COMPLETED.
+ for offset in range(5 * self.image_len / 8, 7 * self.image_len / 8, 1024 * 1024):
+ self.vm.hmp_qemu_io('source', 'aio_write -P 3 %i 1M' % offset)
+ for offset in range(6 * self.image_len / 8, 7 * self.image_len / 8, 1024 * 1024):
+ self.vm.hmp_qemu_io('source', 'aio_write -z %i 1M' % offset)
+
+ if sync_source_and_target:
+ # If source and target should be in sync after the mirror,
+ # we have to flush before completion
+ self.vm.hmp_qemu_io('source', 'aio_flush')
+ self.potential_writes_in_flight = False
+
+ self.complete_and_wait(drive='mirror', wait_ready=False)
+
+ def testActiveIO(self):
+ self.doActiveIO(False)
+
+ def testActiveIOFlushed(self):
+ self.doActiveIO(True)
+
+
+
+if __name__ == '__main__':
+ iotests.main(supported_fmts=['qcow2', 'raw'])