diff options
Diffstat (limited to 'tests/qemu-iotests')
| -rwxr-xr-x | tests/qemu-iotests/044 | 117 | ||||
| -rw-r--r-- | tests/qemu-iotests/044.out | 6 | ||||
| -rw-r--r-- | tests/qemu-iotests/group | 1 | ||||
| -rw-r--r-- | tests/qemu-iotests/iotests.py | 6 | ||||
| -rwxr-xr-x | tests/qemu-iotests/qcow2.py | 9 |
5 files changed, 134 insertions, 5 deletions
diff --git a/tests/qemu-iotests/044 b/tests/qemu-iotests/044 new file mode 100755 index 0000000000..11ea0f4d35 --- /dev/null +++ b/tests/qemu-iotests/044 @@ -0,0 +1,117 @@ +#!/usr/bin/env python +# +# Tests growing a large refcount table. +# +# Copyright (C) 2012 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +import time +import os +import qcow2 +from qcow2 import QcowHeader +import iotests +from iotests import qemu_img, qemu_img_verbose, qemu_io +import struct +import subprocess + +test_img = os.path.join(iotests.test_dir, 'test.img') + +class TestRefcountTableGrowth(iotests.QMPTestCase): + '''Abstract base class for image mirroring test cases''' + + def preallocate(self, name): + fd = open(name, "r+b") + try: + off_reftable = 512 + off_refblock = off_reftable + (512 * 512) + off_l1 = off_refblock + (512 * 512 * 64) + off_l2 = off_l1 + (512 * 512 * 4 * 8) + off_data = off_l2 + (512 * 512 * 4 * 512) + + # Write a new header + h = QcowHeader(fd) + h.refcount_table_offset = off_reftable + h.refcount_table_clusters = 512 + h.l1_table_offset = off_l1 + h.l1_size = 512 * 512 * 4 + h.update(fd) + + # Write a refcount table + fd.seek(off_reftable) + + for i in xrange(0, h.refcount_table_clusters): + sector = ''.join(struct.pack('>Q', + off_refblock + i * 64 * 512 + j * 512) + for j in xrange(0, 64)) + fd.write(sector) + + # Write the refcount blocks + assert(fd.tell() == off_refblock) + sector = ''.join(struct.pack('>H', 1) for j in xrange(0, 64 * 256)) + for block in xrange(0, h.refcount_table_clusters): + fd.write(sector) + + # Write the L1 table + assert(fd.tell() == off_l1) + assert(off_l2 + 512 * h.l1_size == off_data) + table = ''.join(struct.pack('>Q', (1 << 63) | off_l2 + 512 * j) + for j in xrange(0, h.l1_size)) + fd.write(table) + + # Write the L2 tables + assert(fd.tell() == off_l2) + img_file_size = h.refcount_table_clusters * 64 * 256 * 512 + remaining = img_file_size - off_data + + off = off_data + while remaining > 1024 * 512: + pytable = list((1 << 63) | off + 512 * j + for j in xrange(0, 1024)) + table = struct.pack('>1024Q', *pytable) + fd.write(table) + remaining = remaining - 1024 * 512 + off = off + 1024 * 512 + + table = ''.join(struct.pack('>Q', (1 << 63) | off + 512 * j) + for j in xrange(0, remaining / 512)) + fd.write(table) + + + # Data + fd.truncate(img_file_size) + + + finally: + fd.close() + + + def setUp(self): + qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=512', test_img, '16G') + self.preallocate(test_img) + pass + + + def tearDown(self): + os.remove(test_img) + pass + + def test_grow_refcount_table(self): + qemu_io('-c', 'write 3800M 1M', test_img) + qemu_img_verbose('check' , test_img) + pass + +if __name__ == '__main__': + iotests.main(supported_fmts=['qcow2']) diff --git a/tests/qemu-iotests/044.out b/tests/qemu-iotests/044.out new file mode 100644 index 0000000000..7a4007137d --- /dev/null +++ b/tests/qemu-iotests/044.out @@ -0,0 +1,6 @@ +No errors were found on the image. +. +---------------------------------------------------------------------- +Ran 1 tests + +OK diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index ac86f54ae3..a4a9044f24 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -50,3 +50,4 @@ 041 rw auto backing 042 rw auto quick 043 rw auto backing +044 rw auto diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py index 735c6745d7..b2eaf20f0b 100644 --- a/tests/qemu-iotests/iotests.py +++ b/tests/qemu-iotests/iotests.py @@ -42,6 +42,10 @@ def qemu_img(*args): devnull = open('/dev/null', 'r+') return subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull) +def qemu_img_verbose(*args): + '''Run qemu-img without supressing its output and return the exit code''' + return subprocess.call(qemu_img_args + list(args)) + def qemu_io(*args): '''Run qemu-io and return the stdout data''' args = qemu_io_args + list(args) @@ -182,4 +186,4 @@ def main(supported_fmts=[]): try: unittest.main(testRunner=MyTestRunner) finally: - sys.stderr.write(re.sub(r'Ran (\d+) test[s] in [\d.]+s', r'Ran \1 tests', output.getvalue())) + sys.stderr.write(re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', output.getvalue())) diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py index 97f37707bc..fecf5b9a59 100755 --- a/tests/qemu-iotests/qcow2.py +++ b/tests/qemu-iotests/qcow2.py @@ -233,8 +233,9 @@ def usage(): for name, handler, num_args, desc in cmds: print " %-20s - %s" % (name, desc) -if len(sys.argv) < 3: - usage() - sys.exit(1) +if __name__ == '__main__': + if len(sys.argv) < 3: + usage() + sys.exit(1) -main(sys.argv[1], sys.argv[2], sys.argv[3:]) + main(sys.argv[1], sys.argv[2], sys.argv[3:]) |