cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

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      1#!/usr/bin/env python3
      2# group: rw quick
      3#
      4# Test that snapshots move the throttling configuration to the active
      5# layer
      6#
      7# Copyright (C) 2015 Igalia, S.L.
      8#
      9# This program is free software; you can redistribute it and/or modify
     10# it under the terms of the GNU General Public License as published by
     11# the Free Software Foundation; either version 2 of the License, or
     12# (at your option) any later version.
     13#
     14# This program is distributed in the hope that it will be useful,
     15# but WITHOUT ANY WARRANTY; without even the implied warranty of
     16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17# GNU General Public License for more details.
     18#
     19# You should have received a copy of the GNU General Public License
     20# along with this program.  If not, see <http://www.gnu.org/licenses/>.
     21#
     22
     23import iotests
     24import os
     25
     26class TestLiveSnapshot(iotests.QMPTestCase):
     27    base_img = os.path.join(iotests.test_dir, 'base.img')
     28    target_img = os.path.join(iotests.test_dir, 'target.img')
     29    group = 'mygroup'
     30    iops = 6000
     31    iops_size = 1024
     32
     33    def setUp(self):
     34        opts = []
     35        opts.append('node-name=base')
     36        opts.append('throttling.group=%s' % self.group)
     37        opts.append('throttling.iops-total=%d' % self.iops)
     38        opts.append('throttling.iops-size=%d' % self.iops_size)
     39        iotests.qemu_img('create', '-f', iotests.imgfmt, self.base_img, '100M')
     40        self.vm = iotests.VM().add_drive(self.base_img, ','.join(opts))
     41        self.vm.launch()
     42
     43    def tearDown(self):
     44        self.vm.shutdown()
     45        os.remove(self.base_img)
     46        os.remove(self.target_img)
     47
     48    def checkConfig(self, active_layer):
     49        result = self.vm.qmp('query-block')
     50        for r in result['return']:
     51            r = r['inserted']
     52            if r['node-name'] == active_layer:
     53                self.assertEqual(r['group'], self.group)
     54                self.assertEqual(r['iops'], self.iops)
     55                self.assertEqual(r['iops_size'], self.iops_size)
     56            else:
     57                self.assertFalse('group' in r)
     58                self.assertEqual(r['iops'], 0)
     59                self.assertFalse('iops_size' in r)
     60
     61    def testSnapshot(self):
     62        self.checkConfig('base')
     63        self.vm.qmp('blockdev-snapshot-sync',
     64                    node_name = 'base',
     65                    snapshot_node_name = 'target',
     66                    snapshot_file = self.target_img,
     67                    format = iotests.imgfmt)
     68        self.checkConfig('target')
     69
     70if __name__ == '__main__':
     71    iotests.main(supported_fmts=['qcow2'],
     72                 supported_protocols=['file'])