pci: acpi: wire up AcpiDevAmlIf interface to generic bridge
[qemu.git] / tests / qemu-iotests / 163
blobc94ad16f4a7be0945668cc839b00bab6a5452b11
1 #!/usr/bin/env python3
2 # group: rw
4 # Tests for shrinking images
6 # Copyright (c) 2016-2017 Parallels International GmbH
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
22 import os, random, iotests, struct, qcow2, sys
23 from iotests import qemu_img, qemu_io, image_size
25 test_img = os.path.join(iotests.test_dir, 'test.img')
26 check_img = os.path.join(iotests.test_dir, 'check.img')
28 def size_to_int(str):
29     suff = ['B', 'K', 'M', 'G', 'T']
30     return int(str[:-1]) * 1024**suff.index(str[-1:])
32 class ShrinkBaseClass(iotests.QMPTestCase):
33     image_len = '128M'
34     shrink_size = '10M'
35     chunk_size = '16M'
36     refcount_bits = '16'
38     def __qcow2_check(self, filename):
39         entry_bits = 3
40         entry_size = 1 << entry_bits
41         l1_mask = 0x00fffffffffffe00
42         div_roundup = lambda n, d: (n + d - 1) // d
44         def split_by_n(data, n):
45             for x in range(0, len(data), n):
46                 yield struct.unpack('>Q', data[x:x + n])[0] & l1_mask
48         def check_l1_table(h, l1_data):
49             l1_list = list(split_by_n(l1_data, entry_size))
50             real_l1_size = div_roundup(h.size,
51                                        1 << (h.cluster_bits*2 - entry_size))
52             used, unused = l1_list[:real_l1_size], l1_list[real_l1_size:]
54             self.assertTrue(len(used) != 0, "Verifying l1 table content")
55             self.assertFalse(any(unused), "Verifying l1 table content")
57         def check_reftable(fd, h, reftable):
58             for offset in split_by_n(reftable, entry_size):
59                 if offset != 0:
60                     fd.seek(offset)
61                     cluster = fd.read(1 << h.cluster_bits)
62                     self.assertTrue(any(cluster), "Verifying reftable content")
64         with open(filename, "rb") as fd:
65             h = qcow2.QcowHeader(fd)
67             fd.seek(h.l1_table_offset)
68             l1_table = fd.read(h.l1_size << entry_bits)
70             fd.seek(h.refcount_table_offset)
71             reftable = fd.read(h.refcount_table_clusters << h.cluster_bits)
73             check_l1_table(h, l1_table)
74             check_reftable(fd, h, reftable)
76     def __raw_check(self, filename):
77         pass
79     image_check = {
80         'qcow2' : __qcow2_check,
81         'raw' : __raw_check
82     }
84     def setUp(self):
85         if iotests.imgfmt == 'raw':
86             qemu_img('create', '-f', iotests.imgfmt, test_img, self.image_len)
87             qemu_img('create', '-f', iotests.imgfmt, check_img,
88                      self.shrink_size)
89         else:
90             qemu_img('create', '-f', iotests.imgfmt,
91                      '-o', 'cluster_size=' + self.cluster_size +
92                      ',refcount_bits=' + self.refcount_bits,
93                      test_img, self.image_len)
94             qemu_img('create', '-f', iotests.imgfmt,
95                      '-o', 'cluster_size=%s'% self.cluster_size,
96                      check_img, self.shrink_size)
97         qemu_io('-c', 'write -P 0xff 0 ' + self.shrink_size, check_img)
99     def tearDown(self):
100         os.remove(test_img)
101         os.remove(check_img)
103     def image_verify(self):
104         self.assertEqual(image_size(test_img), image_size(check_img),
105                          "Verifying image size")
106         self.image_check[iotests.imgfmt](self, test_img)
108         if iotests.imgfmt == 'raw':
109             return
110         qemu_img('check', test_img)
112     def test_empty_image(self):
113         qemu_img('resize',  '-f', iotests.imgfmt, '--shrink', test_img,
114                  self.shrink_size)
116         qemu_io('-c', f"read -P 0x00 0 {self.shrink_size}", test_img)
118         self.image_verify()
120     def test_sequential_write(self):
121         for offs in range(0, size_to_int(self.image_len),
122                           size_to_int(self.chunk_size)):
123             qemu_io('-c', 'write -P 0xff %d %s' % (offs, self.chunk_size),
124                     test_img)
126         qemu_img('resize',  '-f', iotests.imgfmt, '--shrink', test_img,
127                  self.shrink_size)
129         qemu_img("compare", test_img, check_img)
131         self.image_verify()
133     def test_random_write(self):
134         offs_list = list(range(0, size_to_int(self.image_len),
135                                size_to_int(self.chunk_size)))
136         random.shuffle(offs_list)
137         for offs in offs_list:
138             qemu_io('-c', 'write -P 0xff %d %s' % (offs, self.chunk_size),
139                     test_img)
141         qemu_img('resize',  '-f', iotests.imgfmt, '--shrink', test_img,
142                  self.shrink_size)
144         qemu_img("compare", test_img, check_img)
146         self.image_verify()
148 class TestShrink512(ShrinkBaseClass):
149     image_len = '3M'
150     shrink_size = '1M'
151     chunk_size = '256K'
152     cluster_size = '512'
153     refcount_bits = '64'
155 class TestShrink64K(ShrinkBaseClass):
156     cluster_size = '64K'
158 class TestShrink1M(ShrinkBaseClass):
159     cluster_size = '1M'
160     refcount_bits = '1'
162 ShrinkBaseClass = None
164 if __name__ == '__main__':
165     iotests.main(supported_fmts=['raw', 'qcow2'],
166                  supported_protocols=['file'],
167                  unsupported_imgopts=['compat'])