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qemu-iotests/199: increase postcopy period

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The test wants to force a bitmap postcopy. Still, the resulting
postcopy period is very small. Let's increase it by adding more
bitmaps to migrate. Also, test disabled bitmaps migration.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Tested-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200727194236.19551-7-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-07-27 22:42:21 +03:00 committed by Eric Blake
parent 31e3827913
commit e80a4150a5
1 changed files with 38 additions and 18 deletions
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46
tests/qemu-iotests/199
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@ -103,29 +103,45 @@ class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
def test_postcopy(self):
granularity = 512
nb_bitmaps = 15
for i in range(nb_bitmaps):
result = self.vm_a.qmp('block-dirty-bitmap-add', node='drive0',
name='bitmap', granularity=granularity)
name='bitmap{}'.format(i),
granularity=granularity)
self.assert_qmp(result, 'return', {})
result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256',
node='drive0', name='bitmap')
node='drive0', name='bitmap0')
empty_sha256 = result['return']['sha256']
apply_discards(self.vm_a, discards1 + discards2)
apply_discards(self.vm_a, discards1)
result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256',
node='drive0', name='bitmap')
sha256 = result['return']['sha256']
node='drive0', name='bitmap0')
discards1_sha256 = result['return']['sha256']
# Check, that updating the bitmap by discards works
assert sha256 != empty_sha256
assert discards1_sha256 != empty_sha256
result = self.vm_a.qmp('block-dirty-bitmap-clear', node='drive0',
name='bitmap')
# We want to calculate resulting sha256. Do it in bitmap0, so, disable
# other bitmaps
for i in range(1, nb_bitmaps):
result = self.vm_a.qmp('block-dirty-bitmap-disable', node='drive0',
name='bitmap{}'.format(i))
self.assert_qmp(result, 'return', {})
apply_discards(self.vm_a, discards1)
apply_discards(self.vm_a, discards2)
result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256',
node='drive0', name='bitmap0')
all_discards_sha256 = result['return']['sha256']
# Now, enable some bitmaps, to be updated during migration
for i in range(2, nb_bitmaps, 2):
result = self.vm_a.qmp('block-dirty-bitmap-enable', node='drive0',
name='bitmap{}'.format(i))
self.assert_qmp(result, 'return', {})
caps = [{'capability': 'dirty-bitmaps', 'state': True},
{'capability': 'events', 'state': True}]
@ -145,6 +161,7 @@ class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
event_resume = self.vm_b.event_wait('RESUME')
self.vm_b_events.append(event_resume)
# enabled bitmaps should be updated
apply_discards(self.vm_b, discards2)
match = {'data': {'status': 'completed'}}
@ -158,7 +175,7 @@ class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
downtime = event_dist(event_stop, event_resume)
postcopy_time = event_dist(event_resume, event_complete)
# TODO: assert downtime * 10 < postcopy_time
assert downtime * 10 < postcopy_time
if debug:
print('downtime:', downtime)
print('postcopy_time:', postcopy_time)
@ -166,11 +183,14 @@ class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
# Assert that bitmap migration is finished (check that successor bitmap
# is removed)
result = self.vm_b.qmp('query-block')
assert len(result['return'][0]['dirty-bitmaps']) == 1
assert len(result['return'][0]['dirty-bitmaps']) == nb_bitmaps
# Check content of migrated (and updated by new writes) bitmap
# Check content of migrated bitmaps. Still, don't waste time checking
# every bitmap
for i in range(0, nb_bitmaps, 5):
result = self.vm_b.qmp('x-debug-block-dirty-bitmap-sha256',
node='drive0', name='bitmap')
node='drive0', name='bitmap{}'.format(i))
sha256 = discards1_sha256 if i % 2 else all_discards_sha256
self.assert_qmp(result, 'return/sha256', sha256)