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iotests: Make 234 stable
This test waits for a MIGRATION event with status=completed on the source VM before querying the migration status on both source and destination. However, just because the source says migration has completed does not mean the destination thinks the same. Therefore, in some cases, the destination VM may still report "active" instead of "completed" when asked for its migration status. Fix this by enabling migration events on both VMs and waiting until both source and destination emit a status=completed MIGRATION event. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz
Kevin Wolf
parent
4720cbeea1
commit
9a378495c3
@ -26,6 +26,22 @@ import os
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iotests.verify_image_format(supported_fmts=['qcow2'])
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iotests.verify_platform(['linux'])
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def enable_migration_events(vm, name):
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iotests.log('Enabling migration QMP events on %s...' % name)
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iotests.log(vm.qmp('migrate-set-capabilities', capabilities=[
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{
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'capability': 'events',
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'state': True
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}
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]))
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def wait_migration(vm):
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while True:
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event = vm.event_wait('MIGRATION')
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iotests.log(event, filters=[iotests.filter_qmp_event])
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if event['data']['status'] == 'completed':
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break
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with iotests.FilePath('img') as img_path, \
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iotests.FilePath('backing') as backing_path, \
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iotests.FilePath('mig_fifo_a') as fifo_a, \
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@ -46,6 +62,8 @@ with iotests.FilePath('img') as img_path, \
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.add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt))
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.launch())
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enable_migration_events(vm_a, 'A')
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iotests.log('Launching destination VM...')
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(vm_b.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
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.add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt))
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@ -54,6 +72,8 @@ with iotests.FilePath('img') as img_path, \
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.add_incoming("exec: cat '%s'" % (fifo_a))
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.launch())
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enable_migration_events(vm_b, 'B')
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# Add a child node that was created after the parent node. The reverse case
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# is covered by the -blockdev options above.
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iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing',
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@ -61,22 +81,13 @@ with iotests.FilePath('img') as img_path, \
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iotests.log(vm_b.qmp('blockdev-snapshot', node='drive0-backing',
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overlay='drive0'))
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iotests.log('Enabling migration QMP events on A...')
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iotests.log(vm_a.qmp('migrate-set-capabilities', capabilities=[
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{
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'capability': 'events',
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'state': True
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}
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]))
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iotests.log('Starting migration to B...')
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iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo_a)))
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with iotests.Timeout(3, 'Migration does not complete'):
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while True:
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event = vm_a.event_wait('MIGRATION')
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iotests.log(event, filters=[iotests.filter_qmp_event])
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if event['data']['status'] == 'completed':
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break
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# Wait for the source first (which includes setup=setup)
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wait_migration(vm_a)
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# Wait for the destination second (which does not)
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wait_migration(vm_b)
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iotests.log(vm_a.qmp('query-migrate')['return']['status'])
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iotests.log(vm_b.qmp('query-migrate')['return']['status'])
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@ -94,25 +105,18 @@ with iotests.FilePath('img') as img_path, \
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.add_incoming("exec: cat '%s'" % (fifo_b))
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.launch())
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enable_migration_events(vm_a, 'A')
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iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing',
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overlay='drive0'))
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iotests.log('Enabling migration QMP events on B...')
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iotests.log(vm_b.qmp('migrate-set-capabilities', capabilities=[
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{
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'capability': 'events',
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'state': True
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}
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]))
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iotests.log('Starting migration back to A...')
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iotests.log(vm_b.qmp('migrate', uri='exec:cat >%s' % (fifo_b)))
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with iotests.Timeout(3, 'Migration does not complete'):
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while True:
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event = vm_b.event_wait('MIGRATION')
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iotests.log(event, filters=[iotests.filter_qmp_event])
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if event['data']['status'] == 'completed':
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break
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# Wait for the source first (which includes setup=setup)
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wait_migration(vm_b)
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# Wait for the destination second (which does not)
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wait_migration(vm_a)
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iotests.log(vm_a.qmp('query-migrate')['return']['status'])
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iotests.log(vm_b.qmp('query-migrate')['return']['status'])
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@ -1,14 +1,18 @@
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Launching source VM...
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Launching destination VM...
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{"return": {}}
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{"return": {}}
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Enabling migration QMP events on A...
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{"return": {}}
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Launching destination VM...
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Enabling migration QMP events on B...
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{"return": {}}
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{"return": {}}
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{"return": {}}
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Starting migration to B...
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{"return": {}}
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{"data": {"status": "setup"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "active"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "active"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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completed
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completed
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{"return": {"running": false, "singlestep": false, "status": "postmigrate"}}
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@ -16,14 +20,16 @@ completed
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Add a second parent to drive0-file...
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{"return": {}}
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Restart A with -incoming and second parent...
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Enabling migration QMP events on A...
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{"return": {}}
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Enabling migration QMP events on B...
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{"return": {}}
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Starting migration back to A...
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{"return": {}}
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{"data": {"status": "setup"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "active"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "active"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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completed
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completed
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{"return": {"running": true, "singlestep": false, "status": "running"}}
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