root / test / ganeti.bdev_unittest.py @ 7181fba0
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#!/usr/bin/python
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#
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# Copyright (C) 2006, 2007, 2010 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Script for unittesting the bdev module"""
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import os |
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import unittest |
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from ganeti import bdev |
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from ganeti import errors |
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from ganeti import constants |
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import testutils |
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class TestBaseDRBD(testutils.GanetiTestCase): |
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def testGetVersion(self): |
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data = [ |
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["version: 8.0.12 (api:76/proto:86-91)"],
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["version: 8.2.7 (api:88/proto:0-100)"],
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["version: 8.3.7.49 (api:188/proto:13-191)"],
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] |
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result = [ |
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{ |
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"k_major": 8, |
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"k_minor": 0, |
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"k_point": 12, |
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"api": 76, |
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"proto": 86, |
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"proto2": "91", |
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}, |
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{ |
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"k_major": 8, |
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"k_minor": 2, |
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"k_point": 7, |
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"api": 88, |
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"proto": 0, |
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"proto2": "100", |
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}, |
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{ |
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"k_major": 8, |
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"k_minor": 3, |
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"k_point": 7, |
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"api": 188, |
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"proto": 13, |
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"proto2": "191", |
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} |
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] |
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for d,r in zip(data, result): |
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self.assertEqual(bdev.BaseDRBD._GetVersion(d), r)
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class TestDRBD8Runner(testutils.GanetiTestCase): |
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"""Testing case for DRBD8"""
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@staticmethod
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def _has_disk(data, dname, mname): |
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"""Check local disk corectness"""
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retval = ( |
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"local_dev" in data and |
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data["local_dev"] == dname and |
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"meta_dev" in data and |
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data["meta_dev"] == mname and |
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"meta_index" in data and |
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data["meta_index"] == 0 |
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) |
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return retval
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@staticmethod
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def _has_net(data, local, remote): |
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"""Check network connection parameters"""
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retval = ( |
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"local_addr" in data and |
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data["local_addr"] == local and |
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"remote_addr" in data and |
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data["remote_addr"] == remote
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) |
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return retval
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def testParserCreation(self): |
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"""Test drbdsetup show parser creation"""
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bdev.DRBD8._GetShowParser() |
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def testParser80(self): |
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"""Test drbdsetup show parser for disk and network version 8.0"""
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data = self._ReadTestData("bdev-drbd-8.0.txt") |
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result = bdev.DRBD8._GetDevInfo(data) |
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self.failUnless(self._has_disk(result, "/dev/xenvg/test.data", |
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"/dev/xenvg/test.meta"),
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"Wrong local disk info")
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self.failUnless(self._has_net(result, ("192.0.2.1", 11000), |
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("192.0.2.2", 11000)), |
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"Wrong network info (8.0.x)")
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def testParser83(self): |
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"""Test drbdsetup show parser for disk and network version 8.3"""
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data = self._ReadTestData("bdev-drbd-8.3.txt") |
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result = bdev.DRBD8._GetDevInfo(data) |
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self.failUnless(self._has_disk(result, "/dev/xenvg/test.data", |
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"/dev/xenvg/test.meta"),
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"Wrong local disk info")
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self.failUnless(self._has_net(result, ("192.0.2.1", 11000), |
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("192.0.2.2", 11000)), |
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"Wrong network info (8.0.x)")
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def testParserNetIP4(self): |
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"""Test drbdsetup show parser for IPv4 network"""
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data = self._ReadTestData("bdev-drbd-net-ip4.txt") |
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result = bdev.DRBD8._GetDevInfo(data) |
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self.failUnless(("local_dev" not in result and |
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"meta_dev" not in result and |
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"meta_index" not in result), |
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"Should not find local disk info")
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self.failUnless(self._has_net(result, ("192.0.2.1", 11002), |
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("192.0.2.2", 11002)), |
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"Wrong network info (IPv4)")
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def testParserNetIP6(self): |
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"""Test drbdsetup show parser for IPv6 network"""
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data = self._ReadTestData("bdev-drbd-net-ip6.txt") |
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result = bdev.DRBD8._GetDevInfo(data) |
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self.failUnless(("local_dev" not in result and |
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"meta_dev" not in result and |
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"meta_index" not in result), |
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"Should not find local disk info")
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self.failUnless(self._has_net(result, ("2001:db8:65::1", 11048), |
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("2001:db8:66::1", 11048)), |
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"Wrong network info (IPv6)")
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def testParserDisk(self): |
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"""Test drbdsetup show parser for disk"""
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data = self._ReadTestData("bdev-drbd-disk.txt") |
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result = bdev.DRBD8._GetDevInfo(data) |
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self.failUnless(self._has_disk(result, "/dev/xenvg/test.data", |
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"/dev/xenvg/test.meta"),
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"Wrong local disk info")
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self.failUnless(("local_addr" not in result and |
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"remote_addr" not in result), |
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"Should not find network info")
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def testBarriersOptions(self): |
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"""Test class method that generates drbdsetup options for disk barriers"""
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# Tests that should fail because of wrong version/options combinations
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should_fail = [ |
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(8, 0, 12, "bfd", True), |
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(8, 0, 12, "fd", False), |
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(8, 0, 12, "b", True), |
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(8, 2, 7, "bfd", True), |
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(8, 2, 7, "b", True) |
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] |
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for vmaj, vmin, vrel, opts, meta in should_fail: |
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self.assertRaises(errors.BlockDeviceError,
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bdev.DRBD8._ComputeDiskBarrierArgs, |
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vmaj, vmin, vrel, opts, meta) |
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# get the valid options from the frozenset(frozenset()) in constants.
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valid_options = [list(x)[0] for x in constants.DRBD_VALID_BARRIER_OPT] |
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# Versions that do not support anything
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for vmaj, vmin, vrel in ((8, 0, 0), (8, 0, 11), (8, 2, 6)): |
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for opts in valid_options: |
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self.assertRaises(errors.BlockDeviceError,
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bdev.DRBD8._ComputeDiskBarrierArgs, |
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vmaj, vmin, vrel, opts, True)
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# Versions with partial support (testing only options that are supported)
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tests = [ |
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(8, 0, 12, "n", False, []), |
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(8, 0, 12, "n", True, ["--no-md-flushes"]), |
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(8, 2, 7, "n", False, []), |
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(8, 2, 7, "fd", False, ["--no-disk-flushes", "--no-disk-drain"]), |
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(8, 0, 12, "n", True, ["--no-md-flushes"]), |
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] |
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# Versions that support everything
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for vmaj, vmin, vrel in ((8, 3, 0), (8, 3, 12)): |
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tests.append((vmaj, vmin, vrel, "bfd", True, |
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["--no-disk-barrier", "--no-disk-drain", |
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"--no-disk-flushes", "--no-md-flushes"])) |
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tests.append((vmaj, vmin, vrel, "n", False, [])) |
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tests.append((vmaj, vmin, vrel, "b", True, |
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["--no-disk-barrier", "--no-md-flushes"])) |
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tests.append((vmaj, vmin, vrel, "fd", False, |
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["--no-disk-flushes", "--no-disk-drain"])) |
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tests.append((vmaj, vmin, vrel, "n", True, ["--no-md-flushes"])) |
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# Test execution
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for test in tests: |
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vmaj, vmin, vrel, disabled_barriers, disable_meta_flush, expected = test |
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args = \ |
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bdev.DRBD8._ComputeDiskBarrierArgs(vmaj, vmin, vrel, |
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disabled_barriers, |
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disable_meta_flush) |
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self.failUnless(set(args) == set(expected), |
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"For test %s, got wrong results %s" % (test, args))
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# Unsupported or invalid versions
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for vmaj, vmin, vrel in ((0, 7, 25), (9, 0, 0), (7, 0, 0), (8, 4, 0)): |
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self.assertRaises(errors.BlockDeviceError,
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bdev.DRBD8._ComputeDiskBarrierArgs, |
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vmaj, vmin, vrel, "n", True) |
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# Invalid options
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for option in ("", "c", "whatever", "nbdfc", "nf"): |
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self.assertRaises(errors.BlockDeviceError,
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bdev.DRBD8._ComputeDiskBarrierArgs, |
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8, 3, 11, option, True) |
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class TestDRBD8Status(testutils.GanetiTestCase): |
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"""Testing case for DRBD8 /proc status"""
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def setUp(self): |
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"""Read in txt data"""
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testutils.GanetiTestCase.setUp(self)
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proc_data = self._TestDataFilename("proc_drbd8.txt") |
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proc80e_data = self._TestDataFilename("proc_drbd80-emptyline.txt") |
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proc83_data = self._TestDataFilename("proc_drbd83.txt") |
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proc83_sync_data = self._TestDataFilename("proc_drbd83_sync.txt") |
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proc83_sync_krnl_data = \ |
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self._TestDataFilename("proc_drbd83_sync_krnl2.6.39.txt") |
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self.proc_data = bdev.DRBD8._GetProcData(filename=proc_data)
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self.proc80e_data = bdev.DRBD8._GetProcData(filename=proc80e_data)
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self.proc83_data = bdev.DRBD8._GetProcData(filename=proc83_data)
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self.proc83_sync_data = bdev.DRBD8._GetProcData(filename=proc83_sync_data)
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self.proc83_sync_krnl_data = \
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bdev.DRBD8._GetProcData(filename=proc83_sync_krnl_data) |
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self.mass_data = bdev.DRBD8._MassageProcData(self.proc_data) |
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self.mass80e_data = bdev.DRBD8._MassageProcData(self.proc80e_data) |
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self.mass83_data = bdev.DRBD8._MassageProcData(self.proc83_data) |
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self.mass83_sync_data = bdev.DRBD8._MassageProcData(self.proc83_sync_data) |
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self.mass83_sync_krnl_data = \
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bdev.DRBD8._MassageProcData(self.proc83_sync_krnl_data)
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def testIOErrors(self): |
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"""Test handling of errors while reading the proc file."""
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temp_file = self._CreateTempFile()
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os.unlink(temp_file) |
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self.failUnlessRaises(errors.BlockDeviceError,
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bdev.DRBD8._GetProcData, filename=temp_file) |
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def testHelper(self): |
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"""Test reading usermode_helper in /sys."""
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sys_drbd_helper = self._TestDataFilename("sys_drbd_usermode_helper.txt") |
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drbd_helper = bdev.DRBD8.GetUsermodeHelper(filename=sys_drbd_helper) |
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self.failUnlessEqual(drbd_helper, "/bin/true") |
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def testHelperIOErrors(self): |
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"""Test handling of errors while reading usermode_helper in /sys."""
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temp_file = self._CreateTempFile()
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os.unlink(temp_file) |
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self.failUnlessRaises(errors.BlockDeviceError,
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bdev.DRBD8.GetUsermodeHelper, filename=temp_file) |
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def testMinorNotFound(self): |
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"""Test not-found-minor in /proc"""
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self.failUnless(9 not in self.mass_data) |
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self.failUnless(9 not in self.mass83_data) |
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self.failUnless(3 not in self.mass80e_data) |
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def testLineNotMatch(self): |
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"""Test wrong line passed to DRBD8Status"""
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self.assertRaises(errors.BlockDeviceError, bdev.DRBD8Status, "foo") |
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def testMinor0(self): |
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"""Test connected, primary device"""
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for data in [self.mass_data, self.mass83_data]: |
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stats = bdev.DRBD8Status(data[0])
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self.failUnless(stats.is_in_use)
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self.failUnless(stats.is_connected and stats.is_primary and |
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stats.peer_secondary and stats.is_disk_uptodate)
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def testMinor1(self): |
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"""Test connected, secondary device"""
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for data in [self.mass_data, self.mass83_data]: |
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stats = bdev.DRBD8Status(data[1])
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self.failUnless(stats.is_in_use)
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self.failUnless(stats.is_connected and stats.is_secondary and |
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stats.peer_primary and stats.is_disk_uptodate)
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def testMinor2(self): |
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"""Test unconfigured device"""
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for data in [self.mass_data, self.mass83_data, self.mass80e_data]: |
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stats = bdev.DRBD8Status(data[2])
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self.failIf(stats.is_in_use)
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def testMinor4(self): |
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"""Test WFconn device"""
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for data in [self.mass_data, self.mass83_data]: |
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stats = bdev.DRBD8Status(data[4])
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self.failUnless(stats.is_in_use)
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self.failUnless(stats.is_wfconn and stats.is_primary and |
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stats.rrole == 'Unknown' and |
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stats.is_disk_uptodate) |
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def testMinor6(self): |
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"""Test diskless device"""
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for data in [self.mass_data, self.mass83_data]: |
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stats = bdev.DRBD8Status(data[6])
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self.failUnless(stats.is_in_use)
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self.failUnless(stats.is_connected and stats.is_secondary and |
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stats.peer_primary and stats.is_diskless)
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def testMinor8(self): |
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"""Test standalone device"""
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for data in [self.mass_data, self.mass83_data]: |
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stats = bdev.DRBD8Status(data[8])
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self.failUnless(stats.is_in_use)
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self.failUnless(stats.is_standalone and |
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stats.rrole == 'Unknown' and |
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stats.is_disk_uptodate) |
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def testDRBD83SyncFine(self): |
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stats = bdev.DRBD8Status(self.mass83_sync_data[3]) |
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self.failUnless(stats.is_in_resync)
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self.failUnless(stats.sync_percent is not None) |
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def testDRBD83SyncBroken(self): |
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stats = bdev.DRBD8Status(self.mass83_sync_krnl_data[3]) |
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self.failUnless(stats.is_in_resync)
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self.failUnless(stats.sync_percent is not None) |
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class TestRADOSBlockDevice(testutils.GanetiTestCase): |
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def test_ParseRbdShowmappedOutput(self): |
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volume_name = "abc9778-8e8ace5b.rbd.disk0"
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output_ok = \ |
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("0\trbd\te69f28e5-9817.rbd.disk0\t-\t/dev/rbd0\n"
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"1\t/dev/rbd0\tabc9778-8e8ace5b.rbd.disk0\t-\t/dev/rbd16\n"
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"line\twith\tfewer\tfields\n"
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"")
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output_empty = ""
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output_no_matches = \ |
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("0\trbd\te69f28e5-9817.rbd.disk0\t-\t/dev/rbd0\n"
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"1\trbd\tabcdef01-9817.rbd.disk0\t-\t/dev/rbd10\n"
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"2\trbd\tcdef0123-9817.rbd.disk0\t-\t/dev/rbd12\n"
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"something\twith\tfewer\tfields"
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"")
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output_extra_matches = \ |
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("0\t/dev/rbd0\tabc9778-8e8ace5b.rbd.disk0\t-\t/dev/rbd11\n"
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"1\trbd\te69f28e5-9817.rbd.disk0\t-\t/dev/rbd0\n"
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"2\t/dev/rbd0\tabc9778-8e8ace5b.rbd.disk0\t-\t/dev/rbd16\n"
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"something\twith\tfewer\tfields"
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"")
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parse_function = bdev.RADOSBlockDevice._ParseRbdShowmappedOutput |
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self.assertEqual(parse_function(output_ok, volume_name), "/dev/rbd16") |
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self.assertRaises(errors.BlockDeviceError, parse_function,
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output_empty, volume_name) |
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self.assertEqual(parse_function(output_no_matches, volume_name), None) |
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self.assertRaises(errors.BlockDeviceError, parse_function,
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output_extra_matches, volume_name) |
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if __name__ == '__main__': |
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testutils.GanetiTestProgram() |