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From 37593348e7d95580fb2b0009dcb026c07367f1f8 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Thu, 3 Feb 2022 15:05:34 +0100
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Subject: [PATCH 2/8] iotests: Test blockdev-reopen with iothreads and
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throttling
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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RH-MergeRequest: 73: block: Lock AioContext for drain_end in blockdev-reopen
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RH-Commit: [2/2] d19d5fa9efa4813ece75708436891041754ab910 (kmwolf/centos-qemu-kvm)
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RH-Bugzilla: 2046659
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RH-Acked-by: Sergio Lopez <None>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Hanna Reitz <hreitz@redhat.com>
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The 'throttle' block driver implements .bdrv_co_drain_end, so
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blockdev-reopen will have to wait for it to complete in the polling
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loop at the end of qmp_blockdev_reopen(). This makes AIO_WAIT_WHILE()
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release the AioContext lock, which causes a crash if the lock hasn't
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correctly been taken.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Message-Id: <20220203140534.36522-3-kwolf@redhat.com>
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Reviewed-by: Hanna Reitz <hreitz@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit ee810602376125ca0e0afd6b7c715e13740978ea)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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tests/qemu-iotests/245 | 36 +++++++++++++++++++++++++++++++++---
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tests/qemu-iotests/245.out | 4 ++--
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2 files changed, 35 insertions(+), 5 deletions(-)
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diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245
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index 24ac43f70e..8cbed7821b 100755
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--- a/tests/qemu-iotests/245
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+++ b/tests/qemu-iotests/245
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@@ -1138,12 +1138,13 @@ class TestBlockdevReopen(iotests.QMPTestCase):
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self.assertEqual(self.get_node('hd1'), None)
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self.assert_qmp(self.get_node('hd2'), 'ro', True)
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- def run_test_iothreads(self, iothread_a, iothread_b, errmsg = None):
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- opts = hd_opts(0)
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+ def run_test_iothreads(self, iothread_a, iothread_b, errmsg = None,
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+ opts_a = None, opts_b = None):
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+ opts = opts_a or hd_opts(0)
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
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self.assert_qmp(result, 'return', {})
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- opts2 = hd_opts(2)
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+ opts2 = opts_b or hd_opts(2)
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts2)
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self.assert_qmp(result, 'return', {})
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@@ -1194,6 +1195,35 @@ class TestBlockdevReopen(iotests.QMPTestCase):
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def test_iothreads_switch_overlay(self):
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self.run_test_iothreads('', 'iothread0')
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+ def test_iothreads_with_throttling(self):
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+ # Create a throttle-group object
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+ opts = { 'qom-type': 'throttle-group', 'id': 'group0',
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+ 'limits': { 'iops-total': 1000 } }
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+ result = self.vm.qmp('object-add', conv_keys = False, **opts)
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+ self.assert_qmp(result, 'return', {})
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+
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+ # Options with a throttle filter between format and protocol
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+ opts = [
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+ {
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+ 'driver': iotests.imgfmt,
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+ 'node-name': f'hd{idx}',
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+ 'file' : {
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+ 'node-name': f'hd{idx}-throttle',
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+ 'driver': 'throttle',
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+ 'throttle-group': 'group0',
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+ 'file': {
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+ 'driver': 'file',
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+ 'node-name': f'hd{idx}-file',
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+ 'filename': hd_path[idx],
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+ },
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+ },
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+ }
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+ for idx in (0, 2)
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+ ]
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+
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+ self.run_test_iothreads('iothread0', 'iothread0', None,
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+ opts[0], opts[1])
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+
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if __name__ == '__main__':
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iotests.activate_logging()
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iotests.main(supported_fmts=["qcow2"],
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diff --git a/tests/qemu-iotests/245.out b/tests/qemu-iotests/245.out
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index 4eced19294..a4e04a3266 100644
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--- a/tests/qemu-iotests/245.out
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+++ b/tests/qemu-iotests/245.out
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@@ -17,8 +17,8 @@ read 1/1 bytes at offset 262152
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read 1/1 bytes at offset 262160
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1 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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-...............
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+................
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----------------------------------------------------------------------
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-Ran 25 tests
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+Ran 26 tests
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OK
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--
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2.27.0
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