def test_create_delete_subvolume(self):
"""Verify that it is possible to create/delete subvolume"""
btrfs_version = self._get_btrfs_version()
if btrfs_version >= LooseVersion('4.13.2'):
self.skipTest('subvolumes list is broken with btrfs-progs v4.13.2')
succ = BlockDev.btrfs_create_volume([self.loop_dev], "myShinyBtrfs",
None, None, None)
self.assertTrue(succ)
mount(self.loop_dev, TEST_MNT)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 0)
succ = BlockDev.btrfs_create_subvolume(TEST_MNT, "subvol1", None)
self.assertTrue(succ)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 1)
# already there
with self.assertRaises(GLib.GError):
BlockDev.btrfs_create_subvolume(TEST_MNT, "subvol1", None)
succ = BlockDev.btrfs_delete_subvolume(TEST_MNT, "subvol1", None)
self.assertTrue(succ)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 0)
# already removed
with self.assertRaises(GLib.GError):
BlockDev.btrfs_delete_subvolume(TEST_MNT, "subvol1", None)
succ = BlockDev.btrfs_create_subvolume(TEST_MNT, "subvol1", None)
self.assertTrue(succ)
# add it back
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 1)
# and create another subvolume in it
succ = BlockDev.btrfs_create_subvolume(
os.path.join(TEST_MNT, "subvol1"), "subvol1.1", None)
self.assertTrue(succ)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 2)
# make sure subvolumes are sorted properly (parents before children)
seen = set()
for subvol in subvols:
seen.add(subvol)
self.assertTrue(subvol.parent_id == BlockDev.BTRFS_MAIN_VOLUME_ID
or any(subvol.parent_id == other.id
for other in seen))
def test_create_delete_subvolume(self):
"""Verify that it is possible to create/delete subvolume"""
btrfs_version = self._get_btrfs_version()
if btrfs_version >= LooseVersion('4.13.2'):
self.skipTest('subvolumes list is broken with btrfs-progs v4.13.2')
succ = BlockDev.btrfs_create_volume([self.loop_dev], "myShinyBtrfs", None, None, None)
self.assertTrue(succ)
mount(self.loop_dev, TEST_MNT)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 0)
succ = BlockDev.btrfs_create_subvolume(TEST_MNT, "subvol1", None)
self.assertTrue(succ)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 1)
# already there
with self.assertRaises(GLib.GError):
BlockDev.btrfs_create_subvolume(TEST_MNT, "subvol1", None)
succ = BlockDev.btrfs_delete_subvolume(TEST_MNT, "subvol1", None)
self.assertTrue(succ)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 0)
# already removed
with self.assertRaises(GLib.GError):
BlockDev.btrfs_delete_subvolume(TEST_MNT, "subvol1", None)
succ = BlockDev.btrfs_create_subvolume(TEST_MNT, "subvol1", None)
self.assertTrue(succ)
# add it back
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 1)
# and create another subvolume in it
succ = BlockDev.btrfs_create_subvolume(os.path.join(TEST_MNT, "subvol1"), "subvol1.1", None)
self.assertTrue(succ)
subvols = BlockDev.btrfs_list_subvolumes(TEST_MNT, False)
self.assertEqual(len(subvols), 2)
# make sure subvolumes are sorted properly (parents before children)
seen = set()
for subvol in subvols:
seen.add(subvol)
self.assertTrue(subvol.parent_id == BlockDev.BTRFS_MAIN_VOLUME_ID or any(subvol.parent_id == other.id for other in seen))
