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dc057b5b52
Summary: Add an integration test that nonmaterialized files have the same inode numbers after restarting the Eden mount. Reviewed By: simpkins Differential Revision: D7328311 fbshipit-source-id: 989abbed38626839e0badffeac2d86dc46c8dd72
80 lines
3.0 KiB
Python
80 lines
3.0 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2016-present, Facebook, Inc.
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# All rights reserved.
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#
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# This source code is licensed under the BSD-style license found in the
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# LICENSE file in the root directory of this source tree. An additional grant
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# of patent rights can be found in the PATENTS file in the same directory.
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import os
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import unittest
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from typing import Dict
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from .lib import testcase
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@testcase.eden_repo_test
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class PersistenceTest(testcase.EdenRepoTest):
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def populate_repo(self) -> None:
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self.repo.write_file('file_in_root', 'contents1')
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self.repo.write_file('subdir/file_in_subdir', 'contents2')
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self.repo.write_file('subdir2/file_in_subdir2', 'contents3')
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self.repo.commit('Initial commit.')
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# These tests restart Eden and expect data to have persisted.
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def select_storage_engine(self) -> str:
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return 'sqlite'
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def edenfs_logging_settings(self) -> Dict[str, str]:
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return {'eden.strace': 'DBG7', 'eden.fs.fuse': 'DBG7'}
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# It is not a strict requirement that Eden always remember inode numbers
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# across restart -- we could theoretically drop them whenever we know it's
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# not sensible for a program to remember them across whatever event.
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#
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# However, today we do remember them, and need to do so most of the time.
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def test_preserves_inode_numbers_across_restarts(self):
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before1 = os.lstat(os.path.join(self.mount, 'subdir/file_in_subdir'))
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before2 = os.lstat(os.path.join(self.mount, 'subdir2/file_in_subdir2'))
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self.eden.shutdown()
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self.eden.start()
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# stat in reverse order
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after2 = os.lstat(os.path.join(self.mount, 'subdir2/file_in_subdir2'))
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after1 = os.lstat(os.path.join(self.mount, 'subdir/file_in_subdir'))
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self.assertEqual(before1.st_ino, after1.st_ino)
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self.assertEqual(before2.st_ino, after2.st_ino)
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@unittest.skip('TODO: this is not fully implemented yet')
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def test_preserves_nonmaterialized_inode_numbers(self) -> None:
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inode_paths = [
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'file_in_root',
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'subdir', # we care about trees too
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'subdir/file_in_subdir',
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]
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old_stats = [
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os.lstat(os.path.join(self.mount, path))
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for path in inode_paths]
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self.eden.shutdown()
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self.eden.start()
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new_stats = [
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os.lstat(os.path.join(self.mount, path))
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for path in inode_paths]
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for (path, old_stat,
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new_stat) in zip(inode_paths, old_stats, new_stats):
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self.assertEqual(old_stat.st_ino, new_stat.st_ino,
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f"inode numbers must line up for path {path}")
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self.assertEqual(old_stat.st_atime, new_stat.st_atime,
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f"atime must line up for path {path}")
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self.assertEqual(old_stat.st_mtime, new_stat.st_mtime,
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f"mtime must line up for path {path}")
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self.assertEqual(old_stat.st_ctime, new_stat.st_ctime,
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f"ctime must line up for path {path}")
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