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fuchsia / third_party / f2fs / 70dbd9fd3f10e8ae60199af786f63453dd953c6e
commit70dbd9fd3f10e8ae60199af786f63453dd953c6e[log] [tgz]
authorSeokhwan Kim <sukka.kim@samsung.com>Mon May 24 15:18:31 2021 +0900
committerBrett Wilson <brettw@google.com>Sat May 29 16:38:28 2021 +0000
treea8f981d91ab3136850fbfa8aa354e0b25181c362
parent73bb5a82dcd7f2931808825a851cd7929df9e3dc [diff]
[f2fs] Enable f2fs in the core/workstation product

This change adds fs-management support for f2fs.
For the core/workstation product support,
it temporarily adds the f2fs binary to storage/bundles:bootstrap
and removes unnecessary gn definitions and manifests.

Test: fx shell f2fs && fx shell ls boot/bin/f2fs

Prerequisite:
FUCHSIA_DIR$ patch -p1 < \
third_party/f2fs/patches/0001-f2fs-Add-fs-management-support-for-f2fs.patch

Change-Id: I6715e17b2c378abdace29c00ceefaea433db37cd
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/f2fs/+/536502
Reviewed-by: Brett Wilson <brettw@google.com>
3 files changed
tree: a8f981d91ab3136850fbfa8aa354e0b25181c362
  1. patches/
  2. test_files/
  3. third_party/
  4. tools/
  5. AUTHORS
  6. bcache.cc
  7. bcache.h
  8. BUILD.gn
  9. checkpoint.cc
  10. CONTRIBUTING.md
  11. data.cc
  12. dir.cc
  13. dir.h
  14. dir_hash.cc
  15. f2fs.cc
  16. f2fs.h
  17. f2fs_internal.h
  18. f2fs_layout.h
  19. f2fs_lib.h
  20. f2fs_types.h
  21. file.cc
  22. file.h
  23. LICENSE
  24. mkfs.cc
  25. mkfs.h
  26. namei.cc
  27. node.cc
  28. node.h
  29. PATENTS
  30. README.md
  31. recovery.cc
  32. segment.cc
  33. segment.h
  34. super.cc
  35. vnode.cc
  36. 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
  • 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
  • Remarts
  • fsck (base: bbf6e62)
  • support the ext-identify feature
  • support discard

4th release (July-30-2021 ~)

  • Testability
  • Features: buffered IO, gc (if writable PagedVfs is available)
  • Remarks
  • background/foreground gc
  • caching node/meta blocks
  • read ahead
  • Page level locking
  • buffered IO
  • mmap
  • IPU can be disabled.
  • support fvm
  • xattr

How to build

$ fx set bringup.x64 --with //bundles:tools --with-base //bundles/buildbot:bringup --with-base third_party/f2fs --with-base third_party/f2fs/tools:f2fs-tools $ fx build $ fx emu -N --headless -hda third_party/f2fs/test_files/blk{500m or 1g}.bin (see third_party/f2fs/test_files/README.md for test)