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Diffstat (limited to 'doc/RelNotes/v1.43.0.txt')
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diff --git a/doc/RelNotes/v1.43.0.txt b/doc/RelNotes/v1.43.0.txt new file mode 100644 index 0000000..cf0602e --- /dev/null +++ b/doc/RelNotes/v1.43.0.txt @@ -0,0 +1,234 @@ +E2fsprogs 1.43 (May 17, 2016) +============================= + +Add support for the ext4 metadata checksum, checksum seed, inline +data, encryption, project quota, and read-only features. + +Support for the very old, experimental, and never-added-to-mainline +compression feature has been removed. + +Mke2fs will now create file systems with the metadata_csum and 64bit +features enabled by default. + +The mke2fs program will now support multiple -O options (instead of +just ignoring all but the last -O option). + +Mke2fs will now correctly determine the size of a file system and +handle the discard operation correctly when the "-E offset=NNN" is +used. (Addresses Debian Bug: #803629) + +The tune2fs program will ask the user for confirmation before starting +dangerous operations if the terminal is available, and it will replay +the journal if necessary. + +Add an ext2/3/4 FUSE server + +Debugfs can now modify extended attributes and journal transactions. + +Debugfs now can properly display and set extended timestamps. + +E2fsck will offer to fix extended timestamps that were incorrectly +encoded by older kernels. + +Fix miscellaneous MMP bugs in debugfs. + +Fix sparse_super2 bugs in mke2fs and resize2fs. + +Fix or improve offset support in mke2fs, e2undo, and libext2fs. + +The resize2fs command can now convert file systems between 64-bit and +32-bit mode. + +Fix potential out-of-bounds memory access in resize2fs when doing a +large off-line file system grow operation. + +We now use a new e2undo file format which is much more efficient and +faster than the old tdb-based scheme. Since it so much faster, +e2fsck, tune2fs, debugfs, and resize2fs now also can support using +creating an undo file. + +The mke2fs command can now set the error behavior when initializing +the file system (so the administrator doesn't have to issue a separate +tune2fs -e command). + +Teach mke2fs to parse a human-readable argument for -i option. + +Teach mke2fs to automatically handle creating file systems > 500T by +automatically enable the meta_bg feature. + +Mke2fs will now prompt for user verification before rewriting a file +system's superblock using the -S option. + +Mke2fs no longer complains if the user tries to create a file system +using the entire block device (e.g., without using a partition). The +minor number convention is not used by all block devices, and it's +quite normal in some circumstances to create a file system on /dev/sdc +instead of /dev/sdc1. + +Fix an "mke2fs -d" bug which could create inodes with invalid +extended attribute blocks + +E2fsck is now much more paranoid about not freeing or corrupting +critical metadata blocks, such as inode table blocks, even if +corrupted indirect blocks or extent trees point at these blocks. + +E2fsck now prints block ranges in pass1b instead of listing all of the +blocks exhaustively. + +E2fsck will try to expand the root directory if the lost+found can't +be linked to the root directory. Also, offer to use the root +directory if lost+found can't be created. + +E2fsck is now more paranoid handling corrupted extent trees as well as +corrupted journals. + +E2fsck can now rebuild extent trees, either (a) to optimize them, (b) +to recover from a corrupted extent tree, or (c) to convert +block-mapped inodes to use extents. + +E2fsck now has a readahead mechanism which can significantly speed its +performance, especially on RAID arrays. + +E2fsck now has a "yes to all" option which the user can give if she is +tired of answering 'y' to a very large number of questions. + +E2fsck will now ignore the badblocks inode if the contents of the +badblocks inode indicate that the portion inode table containing the +badblocks inode is bad. (We must go deeper...) + +E2fsck can now correctly fix directory with holes on bigalloc file +systems. + +E2fsck will now check for extent mapped inodes with no extent header +and clear them if found. + +E2fsck now checks to make sure the extended attribute header doesn't +result in the xattr extending beyond the bounds of the inode + +Fixed a bug in e2fsck to avoid overrunning a buffer containing jbd2 +revoke records if the journal is corrupted. + +Fixed a bug in e2fsck which could cause it loop forever if a special +inode has too many invalid block mappings. + +Fixed a bug in e2fsck which could cause pass1b/c/d processing to get +confused if an attempt to allocate a block can't find any free space +in the file system. + +E2fsck will no longer try to force rewrite blocks located beyond the +file system. + +The e2fsck program will no longer update the quota inodes when it is +interrupted. + +Fix a bug which in rare cases would cause e2fsck -fD to corrupt an +extent-mapped directory. + +Fixed a bug in resize2fs which could lead to resize2fs crashing or a +corrupted file system if the file system is almost completely full +when trying grow a file system and we need to allocate blocks to grow +the block group descriptors. + +Fixed a bug in resize2fs which could cause it to get fooled trying to +determine the RAID array's stride when flex_bg is enabled. + +Fix resize2fs bug that could leave block allocation bitmaps +uninitialized. + +The dumpe2fs output has been improved so it is cleaner and always fits +within 80 columns. Also added a more easily machine-parsable output +of dumpe2fs. + +The mke2fs program can now pre-populate a file system from a directory +hierarchy using the -d option. + +The mke2fs program now skips zeroing inode table blocks if they were +already zeroed using the discard feature. + +Check to make sure file system features which can not be supported by +HURD are not enabled if the file system is created to be +HURD-compatible. + +Added a new e2fuzz command that will fuzz an ext4 image for testing +purposes. + +The debugfs logdump command can now deal with 64-bit revoke tables +correctly. Also, "logdump -O" will print the old log contents (before +the journal was replayed). + +The debugfs bmap command can now be used to set or allocate a physical +block. + +Fixed a bug so "filefrag -B -e -v" does not return a separate entry +for each block. + +The filefrag program now accounts for holes in sparse files created by +the file punch operation as an expected/optimal mapping. + +The file I/O functions now correctly handle inodes containing +uninitialized blocks. + +Fix a bug in tune2fs so that removing uninit_bg feature on a bigalloc +file system won't result in corrupted block bitmaps. + +Updated/fixed various man pages. (Addresses Debian Bug: #798425) + + +Programmer's Notes +------------------ + +Fixed coverity, sparse, gcc -Wall, and clang warnings/nits. + +Added Android build files so that e2fsprogs can be built in the +Android source tree. + +Reduce the use of libc functions in libext2fs that may not be present +in the boot loader environment, at least for those functions that are +needed by boot loaders such as yaboot. + +Developers can now override the debugging and optimization flags by +redefining the CFLAGS makefile macro. + +The libext2fs library now has support for fallocate. + +The mke2fs command will now ask the user for confirmation if block +device or image file contains an existing file system image, and +stdout and stdin are connected to a tty. + +The libext2fs library now picks a more intelligent goal block when +doing block allocations. + +The libext2fs library will now automatically set the BLOCK_UNINT flag +if all of the blocks in a block group are free, to speed up future +e2fsck and dumpe2fs operations on the file system. + +Add two new functions ext2fs_new_range() and ext2fs_alloc_range() to +libext2fs. + +The ext2fs_zero_blocks() command will use FALLOC_FL_ZERO_RANGE for +file-based images. + +The ext2fs_bmap() function supports new flags BMAP_UNINIT and +BMAP_ZERO. + +The ext2fs_new_block2() function will now call the alloc_block hook +before checking fs->block_map. + +Support for the MMP feature can now be disabled at compile time. + +Added support to manipulate extended attributes to libext2fs. + +Added a lot of new regression tests. + +Added endian annotations so it's possible to scan e2fsprogs for endian +problems using a static code analyzer. + +Fixed memory leaks in libext2fs. + +The e2fsck jbd2 handling code has been resynced with the 3.16 kernel. +There is now a script in the contrib directory which automates most of +the resync process. + +The build system will now run cppcheck (a static code analysis tool) +via "make C=1" + |