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import unittest
import os
import resource
import overrides_hack
from utils import create_sparse_tempfile, create_lio_device, delete_lio_device, fake_utils, fake_path, run_command, run, TestTags, tag_test, required_plugins
import gi
gi.require_version('GLib', '2.0')
gi.require_version('BlockDev', '3.0')
from gi.repository import GLib, BlockDev
@required_plugins(("swap",))
class SwapTest(unittest.TestCase):
requested_plugins = BlockDev.plugin_specs_from_names(("swap",))
dev_size = 1024**3
@classmethod
def setUpClass(cls):
if not BlockDev.is_initialized():
BlockDev.init(cls.requested_plugins, None)
else:
BlockDev.reinit(cls.requested_plugins, True, None)
class SwapPluginVersionTestCase(SwapTest):
@tag_test(TestTags.NOSTORAGE)
def test_plugin_version(self):
self.assertEqual(BlockDev.get_plugin_soname(BlockDev.Plugin.SWAP), "libbd_swap.so.3")
class SwapTestCase(SwapTest):
test_uuid = "4d7086c4-a4d3-432f-819e-73da03870df9"
def setUp(self):
self.addCleanup(self._clean_up)
self.dev_file = create_sparse_tempfile("swap_test", self.dev_size)
try:
self.loop_dev = create_lio_device(self.dev_file)
except RuntimeError as e:
raise RuntimeError("Failed to setup loop device for testing: %s" % e)
def _clean_up(self):
try:
BlockDev.swap_swapoff(self.loop_dev)
except:
pass
try:
delete_lio_device(self.loop_dev)
except RuntimeError:
# just move on, we can do no better here
pass
os.unlink(self.dev_file)
@tag_test(TestTags.CORE)
def test_all(self):
"""Verify that swap_* functions work as expected"""
with self.assertRaises(GLib.GError):
BlockDev.swap_mkswap("/non/existing/device", None, None)
with self.assertRaises(GLib.GError):
BlockDev.swap_swapon("/non/existing/device", -1)
with self.assertRaises(GLib.GError):
BlockDev.swap_swapoff("/non/existing/device")
self.assertFalse(BlockDev.swap_swapstatus("/non/existing/device"))
# not a swap device (yet)
with self.assertRaises(GLib.GError):
BlockDev.swap_swapon(self.loop_dev, -1)
with self.assertRaises(GLib.GError):
BlockDev.swap_swapoff(self.loop_dev)
on = BlockDev.swap_swapstatus(self.loop_dev)
self.assertFalse(on)
# the common/expected sequence of calls
succ = BlockDev.swap_mkswap(self.loop_dev, None, None)
self.assertTrue(succ)
with self.assertRaisesRegex(GLib.GError, "at most 16 characters long."):
BlockDev.swap_check_label(17 * "a")
succ = BlockDev.swap_set_label(self.loop_dev, "BlockDevSwap")
self.assertTrue(succ)
_ret, out, _err = run_command("blkid -ovalue -sLABEL -p %s" % self.loop_dev)
self.assertEqual(out, "BlockDevSwap")
with self.assertRaisesRegex(GLib.GError, "not a valid RFC-4122 UUID"):
BlockDev.swap_check_uuid("aaaaaaa")
succ = BlockDev.swap_set_uuid(self.loop_dev, uuid=self.test_uuid)
self.assertTrue(succ)
_ret, out, _err = run_command("blkid -ovalue -sUUID -p %s" % self.loop_dev)
self.assertEqual(out, self.test_uuid)
succ = BlockDev.swap_swapon(self.loop_dev, -1)
self.assertTrue(succ)
on = BlockDev.swap_swapstatus(self.loop_dev)
self.assertTrue(on)
succ = BlockDev.swap_swapoff(self.loop_dev)
self.assertTrue(succ)
# already off
with self.assertRaises(GLib.GError):
BlockDev.swap_swapoff(self.loop_dev)
on = BlockDev.swap_swapstatus(self.loop_dev)
self.assertFalse(on)
def test_mkswap_with_label(self):
"""Verify that mkswap with label works as expected"""
succ = BlockDev.swap_mkswap(self.loop_dev, "BlockDevSwap", None)
self.assertTrue(succ)
_ret, out, _err = run_command("blkid -ovalue -sLABEL -p %s" % self.loop_dev)
self.assertEqual(out, "BlockDevSwap")
def test_mkswap_with_uuid(self):
"""Verify that mkswap with uuid works as expected"""
succ = BlockDev.swap_mkswap(self.loop_dev, uuid=self.test_uuid)
self.assertTrue(succ)
_ret, out, _err = run_command("blkid -ovalue -sUUID -p %s" % self.loop_dev)
self.assertEqual(out, self.test_uuid)
def test_swapon_pagesize(self):
"""Verify that activating swap with different pagesize fails"""
# pick some wrong page size: 8k on 64k and 64k everywhere else
pagesize = resource.getpagesize()
if pagesize == 65536:
wrong_pagesize = 8192
else:
wrong_pagesize = 65536
# create swap with "wrong" pagesize
ret, out, err = run_command("mkswap --pagesize %s %s" % (wrong_pagesize, self.loop_dev))
if ret != 0:
self.fail("Failed to prepare swap for pagesize test: %s %s" % (out, err))
# activation should fail because swap has different pagesize
with self.assertRaises(BlockDev.SwapPagesizeError):
BlockDev.swap.swapon(self.loop_dev)
def test_swapon_wrong_size(self):
"""Verify that activating swap with a wrong size fails with expected exception"""
# create swap bigger than the device (twice as big in 1024 sectors)
ret, out, err = run_command("mkswap -f %s %d" % (self.loop_dev, (self.dev_size * 2) / 1024))
if ret != 0:
self.fail("Failed to prepare swap for wrong size test: %s %s" % (out, err))
# activation should fail because swap is bigger than the underlying device
with self.assertRaises(BlockDev.SwapActivateError):
BlockDev.swap.swapon(self.loop_dev)
def _remove_map(self, map_name):
run("dmsetup remove -f %s" % map_name)
@tag_test(TestTags.REGRESSION)
def test_swapstatus_dm(self):
"""Verify that swapstatus works correctly with DM devices"""
dm_name = "swapstatus-test"
self.addCleanup(self._remove_map, dm_name)
run("dmsetup create %s --table \"0 $((`lsblk -osize -b %s -nd`/512)) linear %s 0\"" % (dm_name, self.loop_dev, self.loop_dev))
succ = BlockDev.swap_mkswap("/dev/mapper/%s" % dm_name, None, None)
self.assertTrue(succ)
on = BlockDev.swap_swapstatus("/dev/mapper/%s" % dm_name)
self.assertFalse(on)
succ = BlockDev.swap_swapon("/dev/mapper/%s" % dm_name, -1)
self.assertTrue(succ)
on = BlockDev.swap_swapstatus("/dev/mapper/%s" % dm_name)
self.assertTrue(on)
succ = BlockDev.swap_swapoff("/dev/mapper/%s" % dm_name)
self.assertTrue(succ)
on = BlockDev.swap_swapstatus("/dev/mapper/%s" % dm_name)
self.assertFalse(on)
class SwapDepsTest(SwapTest):
@tag_test(TestTags.NOSTORAGE)
def test_missing_dependencies(self):
"""Verify that checking for technology support works as expected"""
with fake_utils("tests/fake_utils/swap_low_version/"):
# too low version of mkswap available
with self.assertRaisesRegex(GLib.GError, "Too low version of mkswap"):
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP, BlockDev.SwapTechMode.CREATE)
with fake_path(all_but="mkswap"):
# no mkswap available
with self.assertRaisesRegex(GLib.GError, "The 'mkswap' utility is not available"):
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP, BlockDev.SwapTechMode.CREATE)
with fake_path(all_but="swaplabel"):
# no swaplabel available
with self.assertRaisesRegex(GLib.GError, "The 'swaplabel' utility is not available"):
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP, BlockDev.SwapTechMode.SET_LABEL)
with fake_path(all_but="mkswap"):
with self.assertRaisesRegex(GLib.GError, "The 'mkswap' utility is not available"):
# the device shouldn't matter, the function should return an
# error before any other checks or actions
BlockDev.swap_mkswap("/dev/device", "LABEL", None)
class SwapTechAvailable(SwapTest):
@tag_test(TestTags.NOSTORAGE)
def test_check_tech_available(self):
"""Verify that runtime checking mkswap and swaplabel tools availability
works as expected
"""
with fake_path(all_but="mkswap"):
BlockDev.reinit(self.requested_plugins, True, None)
with self.assertRaises(GLib.GError):
# we have swaplabel but not mkswap, so this should fail
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.CREATE | BlockDev.SwapTechMode.SET_LABEL)
with self.assertRaises(GLib.GError):
# we have swaplabel but not mkswap, so this should fail
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.CREATE)
# only label checked -- should pass
succ = BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.SET_LABEL)
self.assertTrue(succ)
# only UUID checked -- should pass
succ = BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.SET_UUID)
self.assertTrue(succ)
with fake_path(all_but="swaplabel"):
BlockDev.reinit(self.requested_plugins, True, None)
with self.assertRaises(GLib.GError):
# we have mkswap but not swaplabel, so this should fail
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.CREATE | BlockDev.SwapTechMode.SET_LABEL)
with self.assertRaises(GLib.GError):
# we have mkswap but not swaplabel, so this should fail
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.SET_LABEL)
with self.assertRaises(GLib.GError):
# we have mkswap but not swaplabel, so this should fail
BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.SET_UUID)
# only label checked -- should pass
succ = BlockDev.swap_is_tech_avail(BlockDev.SwapTech.SWAP,
BlockDev.SwapTechMode.CREATE)
self.assertTrue(succ)
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