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#!/usr/bin/env python3
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
'''This test runs the vmstate-static-checker script with the current QEMU'''
import subprocess
from qemu_test import QemuSystemTest, skipFlakyTest
@skipFlakyTest("vmstate-static-checker can produce false positives")
class VmStateTest(QemuSystemTest):
'''
This test helps to check whether there are problems between old
reference data and the current QEMU
'''
def test_vmstate_7_2(self):
'''Check reference data from QEMU v7.2'''
target_machine = {
'aarch64': 'virt-7.2',
'm68k': 'virt-7.2',
'ppc64': 'pseries-7.2',
's390x': 's390-ccw-virtio-7.2',
'x86_64': 'pc-q35-7.2',
}
self.set_machine(target_machine[self.arch])
# Run QEMU to get the current vmstate json file:
dst_json = self.scratch_file('dest.json')
self.log.info('Dumping vmstate from %s', self.qemu_bin)
cp = subprocess.run([self.qemu_bin, '-nodefaults',
'-M', target_machine[self.arch],
'-dump-vmstate', dst_json],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True, check=True)
if cp.stdout:
self.log.info('QEMU output: %s', cp.stdout)
# Check whether the old vmstate json file is still compatible:
src_json = self.data_file('..', 'data', 'vmstate-static-checker',
self.arch,
target_machine[self.arch] + '.json')
self.log.info('Comparing vmstate with %s', src_json)
checkerscript = self.data_file('..', '..', 'scripts',
'vmstate-static-checker.py')
cp = subprocess.run([checkerscript, '-s', src_json, '-d', dst_json],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True, check=False)
if cp.returncode != 0:
self.fail('Running vmstate-static-checker failed:\n' + cp.stdout +
'\nThis either means that there is a migration bug '
'that needs to be fixed, or\nvmstate-static-checker.py '
'needs to be improved (e.g. extend the changed_names\n'
'in case a field has been renamed), or drop the '
'problematic field from\n' + src_json +
'\nin case the script cannot be fixed easily.')
if cp.stdout:
self.log.warning('vmstate-static-checker output: %s', cp.stdout)
if __name__ == '__main__':
QemuSystemTest.main()
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