Date:	Tue, 22 Jan 2013 14:18:21 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	linux-ext4@...r.kernel.org
Subject: Release of E2fsprogs 1.42.6 (Was re: Release of E2fsprogs 1.42.7)

s/1.42.6/1.42.7/

Sorry for the typo in the subject line....

      	      	      	  	  - Ted



On Mon, Jan 21, 2013 at 11:30:53PM -0500, Theodore Ts'o wrote:
> 
> I've released e2fsprogs 1.42.7 in all of the usual places; it's tagged
> in the git trees on git.kernel.org, github, sourceforge, and
> code.google.com, and available for ftp at:
> 
> ftp://ftp.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs/v1.42.7
> 
> and
> 
> http://prdownloads.sourceforge.net/e2fsprogs/e2fsprogs-1.42.7.tar.gz
> 
> 
> This release includes some significant improvements to resize2fs; in
> particular it resolves a number of bugs which could lead to file systems
> getting corrupted, especially filesystems with the 64-bit or bigalloc
> features enabled.
> 
>                                                 - Ted
> 
> 
> E2fsprogs 1.42.7 (January 21, 2013)
> ===================================
> 
> Add warnings to mke2fs, resize2fs, and tune2fs that the bigalloc and
> quota features are still under development.  For more information
> please see:
>     * https://ext4.wiki.kernel.org/index.php/Bigalloc
>     * https://ext4.wiki.kernel.org/index.php/Quota
> 
> Add some new options to filefrag from Lustre's patches to e2fsprogs:
>     * add -k option to print extents in kB-sized units (like df -k)
>     * add -b {blocksize} to print extents in blocksize units
>     * add -e option to print extent format, even when FIBMAP is used
>     * add -X option to print extents in hexadecimal format
> 
> Fix resize2fs so that it can handle off-line resizes of file systems
> with the flex_bg feature but without a resize_inode (or if we run out
> of reserved gdt blocks).  This also fixes a problem where if the user
> creates a filesystem with a restricted number of reserved gdt blocks,
> an off-line resize which grows the file system could potentially
> result in file system corruption.
> 
> Fix a resize2fs bug which could cause it to corrupt bigalloc file
> systems when doing an off-line resize.
> 
> Further optimize resize2fs so it doesn't use quite as much CPU when
> resizing very large file systems. 
> 
> Fixed 32-bit overflow bugs which could cause resize2fs to fail and
> possibly corrupt the file system while resizing 64-bit file systems.
> 
> Fix a bug in mke2fs where parsing "-E resize=NNN" will result in a
> mke2fs crash due to a divide-by-zero if the 64bit file system feature
> is enabled.
> 
> Add better error checking to mke2fs to check for invalid parameters
> when creating bigalloc file system.
> 
> When creating bigalloc filesystems, the -g option to mke2fs will now
> specify the number of clusters per block group.
> 
> Add to debugfs the functionality to corrupt a specific file system
> block via the "zap_block" command.
> 
> Add to debugfs the functionality to print out a hex dump of a block in
> the file system via the "block_dump" command.
> 
> Add to debugfs the functionality to manipulate the extent tree
> directly via the "extent_open" command.
> 
> Fixed debugfs's mknod command so that it updates the block group
> statistics.
> 
> Fix e2fsck so it can detect and fix inconsistencies in the interior
> nodes of an inode's extent tree.
> 
> Fix a potential memory corruption failure in e2fsck's error path if
> the call to ext2fs_open2() fails.
> 
> Fix e2fsck if its logging function is enabled in e2fsck.conf, and the
> resulting file name for the log file is longer than 100 bytes, that it
> properly handles this situation instead of crashing.
> 
> E2fsck will now report the amount of memory that it attempted to
> allocate when a memory allocation request fails, to make it easier to
> track down the problem.
> 
> Fix mke2fs's handling of the mmp_update_interval option.  (Addresses
> Lustre Bug: LU-1888)
> 
> E2image can now include all data blocks in the e2image output file
> when the user specifies the -a option.
> 
> If e2fsprogs is compiled without --enable-quota, make sure that
> tune2fs can not turn on the feature for new-style quota support, since
> afterwards, none of the e2fsprogs tools will be willing to touch that
> file system.
> 
> Optimize e2fsck's so that it uses much less CPU for large file
> systems.  This can result in significant speedups, especially on
> CPU-constrained systems.  This was primarily done by optimizing
> libext2fs's bitmap functions.  (Addresses Google Bug: #7534813)
> 
> Fix debugfs's htree command so that all its messages are sent through
> the pager.
> 
> Fixed debugfs's "dump_file" and "cat" functions work correctly
> on file systems whose block size is greater than 8k.
> 
> Fix e2freefrag so it works on 64-bit file systems, and so it uses much
> less memory.  (Addresses Google Bug: 7269948)
> 
> Update the spd_readdir.c file in the contrib directory to include some
> additions which were made in 2008 that didn't get folded into the
> version which we checked into the e2fsprogs source tree.  These
> enhancements include thread safety, support for readdir64_r(), and
> safe_getenv() support in case spd_readdir.so is used for setuid binaries.
> 
> Update Czech, Dutch, French, German, Polish, Sweedish, and Vietnamese
> translations
> 
> Add a command to debugfs to create symlinks.
> 
> Document the bigalloc feature in the mke2fs man page.  (Addresses
> Debian Bug: #669730)
> 
> 
> Programmer's Notes
> ------------------
> 
> Fix gcc -Wall nits.
> 
> Fix a spelling typo in the libext2fs texinfo documentation.
> 
> Change the output from "make check" so that tools such as emacs's "M-x
> compile" does not mistake the output as containing a compiler error.
> 
> Export two new functions from libext2fs: ext2fs_extent_node_split()
> and ext2fs_extent_goto2().
> 
> The ext2fs_extents_fix_parents() was fixed so it does not modify the
> location of the extent handle if its current location is at an
> interior node, rather than a leaf node of an inode's extent tree.
> 
> Add a regression test to assure that e2fsck can correctly fix an
> inconsistent interior node in an inode's extent tree.
> 
> The ext2fs_{mark,unmark,test}_block_bitmap_range2() functions now
> correctly support bigalloc file systems which use store block usage
> information in units of clusters.
> 
> Fixed the help text in the configure script for --enable-quota.
> 
> The m68k-specific bitops code has been removed since they were
> incorrectly treating bit numbers with the high bit set as signed
> integers.  Furthermore, modern compilers do a good enough job
> optimizing the generic code there is no point in having the m68k
> specific asm statements.
> 
> Fixed how we link the test programs so they always use the static
> libraries, so that we test using the libraries which we have just
> built.
> 
> Update config.guess and config.sub to the latest versions from the GNU
> project.
> 
> Fixed the com_err.texinfo file so that it can produce a valid
> postscript/pdf printed output.
> 
> Add a regression test which checks debugfs's ability to create
> symlinks, named FIFO's, and device nodes.
> 
> Add a function ext2fs_symlink(), which creates symlinks to the
> libext2fs library.
> 
> Add debugging code so we can test old kernel interfaces for online
> resize to resize2fs.  This backwards compatibility checking is keyed
> off of the RESIZE2FS_KERNEL_VERSION, which is designed to allow us to
> test the functionality of the kernel's older resize ioctls without
> needing to install an old version of resize2fs, and to also test a
> modern resize2fs's ability to work with older kernels without having
> to install an older version of the kernel.
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