E2fsprogs features and patches
From Ext4
(Difference between revisions)
(→Works in progress) |
|||
Line 44: | Line 44: | ||
* Basic support in git tree | * Basic support in git tree | ||
* Eric sandeen working on ext2fs_extent_set_bmap() functionality, needed to finish e2fsck pass1b and debugfs file write support. | * Eric sandeen working on ext2fs_extent_set_bmap() functionality, needed to finish e2fsck pass1b and debugfs file write support. | ||
+ | |||
+ | == Flexible block group support == | ||
+ | * Basic support for groups with out meta-data available in the next branch. | ||
+ | * Meta-data grouping support patches available (as of Apr08 they have been dropped from the pu branch due to conflicts introduce in the uninit_fixup branch) | ||
+ | * Patch needs to be broken up to smaller logical patches. | ||
== Nano second support == | == Nano second support == |
Revision as of 00:10, 22 April 2008
Contents |
Works in progress
Undo I/O manager
- Patches submitted to the mailing list by Aneesh Kumar
- In the 'pu' branch; needs work
- Only use the undo manager with mke2fs if uninit blockgroups and lazy inode table init is enabled DONE
- Don't make the undo manager bomb out with mysterious errors if the directory does not exist, or if a filesystem has previously been created and there is an undo file there. DONE
Uninitialized block groups
- Basic support (with bugs) integrated into e2fsprogs mainline
- Rename uninit_groups to uninit_bg to be consistent with other defined features. Retain the old name for historical purpose. DONE
- The return value of ext2fs_super_and_bgd_loc() is not to be trusted. Document this in the source code. DONE
- Make sure ext2fs_super_and_bgd_loc() does not get used anywhere where the return value is expected to be accurate (aside from mke2fs). PARTIALLY DONE
- Remove lazy_bg feature from being set in mke2fs. Feature has been declare a dangerous hack by its creator, remove it to avoid people building on top of it. DONE
- Integrate flex-bg meta-data grouping support and make sure it works well with uninit block groups
- Disentangle lazy_bg and meta_bg features DONE
64-bit block support
- Patches submitted to the mailing list by Valerie Clement, which unfortunately broke the shared library ABI.
- Ted Ts'o suggests a different approach:
- http://thread.gmane.org/gmane.comp.file-systems.ext4/2845
- http://thread.gmane.org/gmane.comp.file-systems.ext4/2125
- Partial support is gradually getting added into the e2fsprogs mainline.
i_version support:
- Status of kernel patches?
- No work needed for e2fsprogs except display support in debugfs
Extents support
- Basic support in git tree
- Eric sandeen working on ext2fs_extent_set_bmap() functionality, needed to finish e2fsck pass1b and debugfs file write support.
Flexible block group support
- Basic support for groups with out meta-data available in the next branch.
- Meta-data grouping support patches available (as of Apr08 they have been dropped from the pu branch due to conflicts introduce in the uninit_fixup branch)
- Patch needs to be broken up to smaller logical patches.
Nano second support
- Check out kernel support; does it work correctly?
- No work needed for e2fsprogs except display support in debugfs
Miscellaneous items
- If the inode's extra_isize is less than the superblock's min_extra_isize, it needs to be fixed in e2fsck pass1.
- The combination of meta_bg and resize_inode creates a corrupt filesystem (even in the 1.40.x's maint branch)
Done
- Greater than 32000 subdir support
- Huge file support