Date:	Mon, 20 Feb 2012 12:59:10 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	"Ted Ts'o" <tytso@....edu>
CC:	Eric Sandeen <esandeen@...hat.com>,
	Phillip Susi <psusi@...ntu.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: E2fsprogs 1.42.1 release

On 2/19/12 9:19 PM, Ted Ts'o wrote:
> On Sun, Feb 19, 2012 at 10:11:12PM -0500, Eric Sandeen wrote:
>>> Which is in e2fsprogs 1.42.1....
>>>
>> Was that the release announcement?  :)
> 
> I knew I forgot something.  :-)
> 
> Over the weekend I released e2fsprogs 1.42.1.  It can be found in the
> usual places: on sourceforge, a signed git tag, and on
> ftp.kernel.org:/pub/linux/kernel/people/tytso/e2fsprogs/v1.42.1.

The tarball is a little messed up:

[esandeen@...n e2fsprogs]$ tar xvzf e2fsprogs-1.42.1.tar.gz
e2fsprogs-libs-1.42.1/
e2fsprogs-libs-1.42.1/.gitignore
e2fsprogs-libs-1.42.1/.release-checklist
e2fsprogs-libs-1.42.1/lib/

why does it unpack into e2fsprogs-libs-1.42.1?
                                  ^^^^

I could work around that but it's unexpected.

-Eric

> 							- Ted
> 
> E2fsprogs 1.42.1 (February 17, 2012)
> ===================================
> 
> The mke2fs and e2fsck now use significantly less memory when creating
> or checking very large file systems.  This was enabled by adding
> extent-based bitmaps which are stored using a red-block tree, since
> block and inode allocations tend to be contiguous.
> 
> The command mke2fs -S is used as a last ditch recovery command to
> write new superblock and block group descriptors, but _not_ to destroy
> the inode table in hopes of recovering from a badly corrupted file
> system.  So if the uninit_bg feature is enabled, mke2fs -S will now
> set the unused inodes count field to zero.  Otherwise, e2fsck -fy
> after using mke2fs -S would leave the file system completely empty.
> 
> Since mke2fs recognizes mke3fs in argv[0] to mean "mkfs.ext3", also
> honor "mke4fs" to work the same as "mke2fs.ext4", since RHEL5 has
> installed an mke2fs binary using that name.
> 
> The usage and help messages for the -G, -t and -T options in mke2fs
> have been fixed.
> 
> If e2fsck needs to use the backup group descriptors, the
> ext2fs_open2() function clears the UNINIT bits to ensure all of the
> inodes in the file systems get scanned.  However, the code which reset
> the UNINIT flags did not also recalculate the checksum, which produced
> many spurious (and scary) e2fsck messages.  This has been fixed by
> resetting cheksums when the UNINIT bits are cleared.
> 
> Relax a check in e2fsck which required that the block bitmap to be
> initialized when the inode bitmap is in use.  This will allow us to
> eventually eliminate code from the kernel which forcibly initialized
> the block bitmap when the inode bitmap is first used, requiring an
> extra journal credit and disk write.  (Addresses Google Bug: #5944440)
>     
> Make sure rdebugfs (which may be installed setuid or setgid disk) does
> not honor environment variables if euid != uid or egid != gid.
> 
> Debugfs's ncheck command has been optimized and now is much more
> robust with faced with corrupted file systems.  The ncheck command
> also now has a -c option which will verify the file type information
> in the directory entry to see if matches the inode's mode bits.  This
> is extremely useful when trying to use debugsfs to determine which
> parts of the file system metadata can be trusted.
> 
> E2image will try to use ftruncate64() to set the i_size for raw
> images, instead of writing a single null byte.  This avoid allocating
> an extra block to the raw image, for those file systems and/or
> operating systems that support this.  (Linux does.)  In addition, fix
> a logic bug that caused the file to not be properly extended if the
> size of the last hole was exactly an multiple of a megabyte.
> 
> Fixed a bug in resize2fs where for 1k and 2k file systems, where
> s_first_data_block is non-zero, this wasn't taken into account when
> calculate the minimum file system size for use with the -M option.
> 
> Fixed the badblocks program to honor the -s flag when in read-only -t
> mode.  (Addresses Debian Bug #646629)
> 
> Update Czech, Dutch, French, Polish, and Sweedish translation from the
> Translation Project.
> 
> Fixed various Debian Packaging issues so that dpkg-buildflags is used
> if present, which allows e2fsprogs to be built with security hardening
> flags.  (Addresses Debian Bugs: #654457)
> 
> Programmer's Notes
> ------------------
> 
> Fix a bug in ext2fs_clear_generic_bmap() when used for 32-bit bitmaps.
> This was only an issue for programs compiled against e2fsprogs 1.41
> that manipulate bitmaps directly.  (Addresses Sourceforge Bugs:
> #3451486)
> 
> The libext2fs library now uses sysconf() to fetch the page size, instead
> of the deprecated getpagesize().
> 
> The ext2fs_get_pathname() function will return a partial path if an a
> directory in the path is not a directory, displaying it as an inode
> number in angle brackets instead of giving up and displaying an error.
> This is much more helpful when a user is trying to debug a corrupted
> file system.
> 
> Codepoints for the RO_COMPAT_REPLICA feature has been reserved.
> 
> Added a new library function, ext2fs_file_get_inode_num(), for use by
> fuse2fs.
> 
> Fixed a bug in ext2fs_file_set_size2() so that when it is truncating a
> file, it actually works.
> 
> The block iterator now properly honors the BLOCK_ABORT flag for
> extent-based flags.  Previously, it didn't, which generally made code
> be less efficient, but it could cause bugs in ext2fs_link(), for
> example, by causing it to insert multiple directory entries.
> 
> Fixed an (harmless other than causing a compiler warning) use of an
> uninitialized variable in e2fsck's MMP code.
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