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fuchsia / third_party / f2fs / bba9ca5e15a262b987a47dca7158ae7199f40dbb
commitbba9ca5e15a262b987a47dca7158ae7199f40dbb[log] [tgz]
authorJaeyoon Choi <j_yoon.choi@samsung.com>Wed Jun 30 17:39:12 2021 +0900
committerBrett Wilson <brettw@google.com>Sat Jul 24 16:27:54 2021 +0000
tree1d082c76bee92ec0bc73750e853f8d8dd2cfee43
parent0a346f95ab7197e451dcd887d9e68ecef3190145 [diff]
[f2fs] Add unit tests for checkpoint operations

These unit tests cover SIT/NAT journaling and segment summary operations.

Test: fx test f2fs-fs-tests f2fs-slow-fs-tests f2fs-unittest

Change-Id: Id72639adedaa715584e19d11b6e213b2608f3cfb
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/f2fs/+/559382
Reviewed-by: Brett Wilson <brettw@google.com>
5 files changed
tree: 1d082c76bee92ec0bc73750e853f8d8dd2cfee43
  1. patches/
  2. test/
  3. test_files/
  4. third_party/
  5. tools/
  6. AUTHORS
  7. bcache.cc
  8. bcache.h
  9. BUILD.gn
  10. checkpoint.cc
  11. CONTRIBUTING.md
  12. data.cc
  13. dir.cc
  14. dir.h
  15. dir_hash.cc
  16. f2fs.cc
  17. f2fs.h
  18. f2fs_internal.h
  19. f2fs_layout.h
  20. f2fs_lib.h
  21. f2fs_types.h
  22. file.cc
  23. file.h
  24. fsck.cc
  25. fsck.h
  26. gc.cc
  27. inline.cc
  28. LICENSE
  29. mkfs.cc
  30. mkfs.h
  31. mount.cc
  32. mount.h
  33. namei.cc
  34. namestring.h
  35. node.cc
  36. node.h
  37. PATENTS
  38. README.md
  39. recovery.cc
  40. segment.cc
  41. segment.h
  42. super.cc
  43. vnode.cc
  44. vnode.h
README.md

What is F2FS?

F2FS is the most commonly used log-structured file system in Linux. It supports flash-friendly features such as adaptive logging, multi-head logging, fsync acceleration, and node address translation. For more information see: https://www.usenix.org/conference/fast15/technical-sessions/presentation/lee

Major Release

1st release (Apr-06-2021)

  • Features: mkfs, mount/umount, read, write, rmdir, mkdir, rename, fsync, lseek, link, unlink
  • Remarks
  • Fuchsia base code ; Thu Mar 11 08:53:24 2021 Prashanth Swaminathan,76a08ad1474 [speak] Migrate to new component templates
  • There is no cache. Every request is handled as a synchronous operation.
  • fsync() triggers checkpointing
  • lock granularity: file operation
  • LFS is used for block allocation by default, and IPU is forced when the number of free sections is below 50%.
  • no background/foreground gc
  • disable the roll-forward recovery
  • 6 active logs
  • disable the ext-identify feature
  • block allocation: LFS, IPU
  • fsck do nothing, but it returns true
  • no discard

2nd release (May-28-2021)

  • Features: truncate, ssr, fsync, recovery
  • Remarks
  • Fuchsia base code ; Thu May 20 07:25:45 2021 Yilong Li, 02c0dfff0fdb
  • support the roll-forward recovery and file level fsync()
  • block allocation: LFS, IPU, SSR
  • truncate

3rd release (June-25-2021)

  • Features: fsck, mount option, mkfs option
  • all fs-tests and large-fs-tests passed
  • Remarks
  • fsck (base: 7f35b548d4b)
  • support the ext-identify feature
  • support discard

4th release (July-30-2021)

  • Features: vnode cache, inline dentry
  • unit test coverage

5th release (August-27-2021)

  • Features: dentry cache
  • Landing
  • Linux compatibility test coverage

6th release (September-30-2021 ~)

  • Features: gc, node cache, pager support, mmap, wb, readahead, ... (as new fuchsia features coming)
  • stress test coverage
  • performance test

How to build

$ fx set core.x64 --with-base //bundles:tools --with-base //bundles:tests --with-base third_party/f2fs
(see third_party/f2fs/test_files/README.md for test)