F2FS feature-list

Question

In the man page of mkfs.f2fs, I see the option:

-O feature-list Specify a feature list in order f2fs filesystem will supports. e.g "encrypt" and so on

I'd like to know how can I get the full list of the optional features of f2fs and whether it is possible to modify existing file system and enable some features without data loss.

Possibly helpful: https://www.kernel.org/doc/Documentation/filesystems/f2fs.txt — Jeff Schaller, Jun 25 '19 at 13:16
Is there a tool like tune2fs that can modify the features of an existing fs (f2fs) without data loss? — , Jul 01 '19 at 08:46

score 3 · Answer 1 · edited Jul 24 '20 at 13:12

3

Looking at https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git/tree/mkfs/f2fs_format_main.c, the definition of parse_feature is taken from the file include/f2fs_fs.h. This function uses a table with 10 feature names (not all make sense for normal users!): https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git/tree/include/f2fs_fs.h#n1361:

encrypt
extra_attr
project_quota
inode_checksum
flexible_inline_xattr
quota
inode_crtime
lost_found
verity
sb_checksum

edited Jul 24 '20 at 13:12

Eliah Kagan

4,065
2
24
38

answered Sep 13 '19 at 10:29

Sven

275
2
5

`casefold` and `compression` have been added. – Golar Ramblar Jul 24 '20 at 12:43

score 1 · Answer 2 · answered Sep 07 '19 at 12:24

1

https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git/tree/mkfs/f2fs_format_main.c?h=experimental#n70

Only encrypt at the moment it seems.

answered Sep 07 '19 at 12:24

Sander

11
1

Why have you added the "experimental" part in your URL? – Sven Sep 13 '19 at 10:26
1

what about `compress`? – brauliobo Jun 18 '20 at 00:30

F2FS feature-list

2 Answers2