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iotests: Add iothread cases to 155

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This patch adds test cases for attaching the backing chain to a mirror
job target right before finalising the job, where the image is in a
non-mainloop AioContext (i.e. the backing chain needs to be moved to the
AioContext of the mirror target).

This requires switching the test case from virtio-blk to virtio-scsi
because virtio-blk only actually starts using the iothreads when the
guest driver initialises the device (which never happens in a test case
without a guest OS). virtio-scsi always keeps its block nodes in the
AioContext of the the requested iothread without guest interaction.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200310113831.27293-7-kwolf@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2020-03-10 12:38:30 +01:00
parent 30dd65f307
commit 6a5f6403a1
2 changed files with 25 additions and 11 deletions
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32
tests/qemu-iotests/155
View file

@ -49,11 +49,14 @@ target_img = os.path.join(iotests.test_dir, 'target.' + iotests.imgfmt)
# chain opened right away. If False, blockdev-add
# opens it without a backing file and job completion
# is supposed to open the backing chain.
# use_iothread: If True, an iothread is configured for the virtio-blk device
# that uses the image being mirrored
class BaseClass(iotests.QMPTestCase):
target_blockdev_backing = None
target_real_backing = None
target_open_with_backing = True
use_iothread = False
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, back0_img, '1440K')
@ -69,7 +72,16 @@ class BaseClass(iotests.QMPTestCase):
'file': {'driver': 'file',
'filename': source_img}}
self.vm.add_blockdev(self.vm.qmp_to_opts(blockdev))
self.vm.add_device('virtio-blk,id=qdev0,drive=source')
if self.use_iothread:
self.vm.add_object('iothread,id=iothread0')
iothread = ",iothread=iothread0"
else:
iothread = ""
self.vm.add_device('virtio-scsi%s' % iothread)
self.vm.add_device('scsi-hd,id=qdev0,drive=source')
self.vm.launch()
self.assertIntactSourceBackingChain()
@ -182,24 +194,21 @@ class MirrorBaseClass(BaseClass):
def testFull(self):
self.runMirror('full')
node = self.findBlockNode('target',
'/machine/peripheral/qdev0/virtio-backend')
node = self.findBlockNode('target', 'qdev0')
self.assertCorrectBackingImage(node, None)
self.assertIntactSourceBackingChain()
def testTop(self):
self.runMirror('top')
node = self.findBlockNode('target',
'/machine/peripheral/qdev0/virtio-backend')
node = self.findBlockNode('target', 'qdev0')
self.assertCorrectBackingImage(node, back2_img)
self.assertIntactSourceBackingChain()
def testNone(self):
self.runMirror('none')
node = self.findBlockNode('target',
'/machine/peripheral/qdev0/virtio-backend')
node = self.findBlockNode('target', 'qdev0')
self.assertCorrectBackingImage(node, source_img)
self.assertIntactSourceBackingChain()
@ -252,6 +261,9 @@ class TestBlockdevMirrorReopen(MirrorBaseClass):
backing="backing")
self.assert_qmp(result, 'return', {})
class TestBlockdevMirrorReopenIothread(TestBlockdevMirrorReopen):
use_iothread = True
# Attach the backing chain only during completion, with blockdev-snapshot
class TestBlockdevMirrorSnapshot(MirrorBaseClass):
cmd = 'blockdev-mirror'
@ -268,6 +280,9 @@ class TestBlockdevMirrorSnapshot(MirrorBaseClass):
overlay="target")
self.assert_qmp(result, 'return', {})
class TestBlockdevMirrorSnapshotIothread(TestBlockdevMirrorSnapshot):
use_iothread = True
class TestCommit(BaseClass):
existing = False
@ -283,8 +298,7 @@ class TestCommit(BaseClass):
self.vm.event_wait('BLOCK_JOB_COMPLETED')
node = self.findBlockNode(None,
'/machine/peripheral/qdev0/virtio-backend')
node = self.findBlockNode(None, 'qdev0')
self.assert_qmp(node, 'image' + '/backing-image' * 0 + '/filename',
back1_img)
self.assert_qmp(node, 'image' + '/backing-image' * 1 + '/filename',

4
tests/qemu-iotests/155.out
View file

@ -1,5 +1,5 @@
.........................
...............................
----------------------------------------------------------------------
Ran 25 tests
Ran 31 tests
OK