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RELEASE-NOTES
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E2fsprogs 1.43-WIP (September 22, 2012)
=======================================
Add support for the ext4 metadata checksum 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.
Programmer's Notes
------------------
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 loadsers such as yaboot.
Support for the MMP feature can now be disabled at compile time.
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.
E2fsprogs 1.42.6 (September 21, 2012)
=====================================
When mke2fs creates file systems with lazy itable initialization, the
progress updates for writing the inode table happens so quickly that
on a serial console, the time to write the progress updates can be the
bottleneck. So mke2fs will now only update its progress indicators
once a second.
Resize2fs will skip initializing the inode tables if the kernel
supports lazy_itable_init, which speeds up growing off-line growth of
uninit_bg file systems significantly. Resize2fs will now also
correctly set the itable_unused field in the block group descriptor to
speed up the first e2fsck after the file system is grown.
Resize2fs has been fixed so that on-line resizing of meta_bg file
systems work correctly. This is needed to grow file system which are
larger than 16T.
Resize2fs will now correctly handle resizing file systems to 16TB on
32-bit file systems when "16TB" is specified on the command line.
Fix mke2fs so that it will be careful to set the reserved blocks ratio
larger than 50%; this can happen when creating small file systems and
when the last block group is dropped because there are not enough
blocks to support the metadata blocks in the last block group.
Fixed spelling mistake in debugfs's help message.
Fixed a potential seg fault in e2fsck when there is an I/O error while
reading the superblock.
Fixed various Debian Packaging Issues (Addresses Debian Bug #677497)
Updated/fixed various man pages. (Addresses Sourceforge Bug:
#3559210)
Programmer's Notes
------------------
The configure option --enable-relative-symlink was broken so that it
needed to be --enable-symlink-relative-symlinks. We will support both
for at least two years, but then the worng configure option will be
removed.
Fixed a regression introduced in 1.42.5 so the link order for
e2fsprogs' libraries will be correct for both static and shared
linking. (Addresses Sourceforge Bug: #3554345)
Add support for e2fsprogs to be compiled using clang/LLVM.
Fix portability problems on non-Linux systems: avoid compile failures
on systems that don't have malloc.h
Fix f_mmp regression test suite so that debugfs gets killed if the
test is interrupted.
E2fsprogs 1.42.5 (July 29, 2012)
================================
Fixed a bug with mke2fs where if there is only 8 inodes per block
group, the calculation of the number of uninitialized inodes in the
first block group would go negative. This resulted in "mke2fs -N 256
-t ext4 /tmp/foo.img 256m" trying to write so many blocks that /tmp
would run out of space. (Addresses Sourceforge Bug: #3528892)
Fixed a bug in how e2fsck would uniquify directory entry names.
(AddressesSourceforge Bug: #3540545)
Previously, e2fsck would only allow a mounted file system to be
checked if it was the root file system and it was mounted read-only.
Now it will allow any file system mounted read-only to be checked if
the -f option is specified. This makes it easier to test how e2fsck
handles checking file systems which are mounted without having to test
on the root file system.
Fixed a problem if e2fsck where if the root file system is mounted
read-only, e2fsck would not clear an error indication in the journal
superblock. Combined with a kernel bug, this would cause the e2fsck
to check the file system after every single boot.
The e4defrag program can now handle device symlinks, such as
/dev/mapper/testvg-testlv, instead of insisting on a less
human-friendly name such as /dev/dm-2. (Addresses Red Hat Bugzilla:
#707209)
Fixed filefrag so it will not crash with a segfault on files from a
virtual file system such as /proc. (e.g., "filefrag
/proc/partitions")
Fixed filefrag so that it correctly reports the number of extents.
(Addresses Red Hat Bugzilla: #840848)
Fixed a file descriptor leak in logsave which could cause it to hang.
(Addresses Debian Bug: #682592)
Fixed e2fsck so that the file system is marked as containing an error
if the user chooses not to fix the quota usage information.
Fixed tune2fs so that it correctly removes the quota feature when the
last quota inode is removed.
Fix tune2fs so that after removing a quota inode, the block bitmap is
updated; otherwise, e2fsck would complain after running 'tune2fs -O
^quota <dev>'.
Fix tune2fs so that when converting a file system from using legacy
quota files to the new quota file system feature with hidden quota
files, the accounting for these files is handled correctly so that
e2fsck doesn't complain.
Improved e2fsck's verbose reporting statistics, and allow the more
verbose reporting to be enabled via /etc/e2fsck.conf.
Fixed various Debian Packaging Issues (Addresses Debian Bug #678395)
Updated/fixed various man pages. (Addresses Debian Bugs: #680114)
Programmer's Notes
------------------
Fixed portability problems on other operating systems (e.g., Hurd and
FreeBsd) caused by the attempted inclusion of <sys/quota.h>.
Make sure that shared libraries link with the shared libraries built
in the build tree, instead of the system provided libraries.
Previously, libraries and executables were linked with the system
libraries if present, and possibly using static archives instead of
shared libraries. This was also problematic since if libext2fs.so is
linked with a static libcom_err.a from system, the build system would
attempt to link without -lpthread. (Addresses Sourceforge Bug:
#3542572)
E2fsprogs 1.42.4 (June 12, 2012)
================================
Fixed more 64-bit block number bugs (which could end up corrupting
file systems!) in e2fsck, debugfs, and libext2fs.
Fixed e2fsck's handling of the journal's s_errno field. E2fsck was
not properly propagating the journal's s_errno field to the superblock
field; it was not checking this field if the journal had already been
replayed, and if the journal *was* being replayed, the "error bit"
wasn't getting flushed out to disk.
Fixed a false positive complaint by e2fsck if all of the extents in
the last extent tree block are uninitalized and located after the end
of the file as defined by i_size.
The dumpe2fs will now display the journal's s_errno field if it is
non-zero, and it will also display the journal's 64-bit feature flag
if present.
Fix e2fsck so that it always opens the device file in exclusive mode
when it might need to modify the file system, and never if the -n
option is specified. (Previously, there were a few corner cases where
it might get things wrong in either direction.)
E2fsck now correctly truncates or deallocates extent-mapped inodes on
the orphan list. The root cause was a bug in libext2fs's block
iterator which could end up skipping an extent when the last block in
an extent is removed, causing the current extent to be removed from
the extent tree.
E2fsck now correctly sets the global free block and inode counts when
truncating or removing inodes on the orphan list in preen mode.
Previously, it would leave these values would be set incorrectly,
which is largely a cosmetic issue since the kernel no longer pays
attention to those fields, but it can cause spurious complaints in
subsequent e2fsck runs.
Fix i_blocks accounting when the libext2fs library needs to add or
remove an extent tree block on bigalloc file systems.
The lsattr and chattr programs now support the No_COW flag for the
benefit of btrfs.
Debugfs now interprets date strings of the form @ddd as ddd seconds
after the beginning of the epoch. This is handy when setting an inode
number into the d_time field when debugging orphan list handling.
Fix a precedence bug with built-in quota support which might result in
e2fsck paying attention to the quota inode field even if the built-in
quota feature flag is not set. Fortunately, in practice that
superblock field should be zero for non-built-in quota file systems,
so it's unlikely this bug would have caused problems.
Updated/fixed various man pages. (Addresses Debian Bugs: #674453,
#674694)
Programmer's Notes
------------------
The regression test suite can now run the integration tests in the
tests directory in parallel, via "make -jN check".
Add new test, f_zero_extent_length which tests e2fsck's handling of
the case where all of the extents in the last extent tree block are
uninitialized extents after i_size.
Add a new test, f_jnl_errno, which checks handling of an error
indication set in the journal superblock.
Fix the test f_jnl_64bit so that it properly checks e2fsck's handling
of a 64-bit journal.
Add two tests, f_orphan_indirect_inode and f_orphan_extent_inode which
tests e2fsck's handling of orphan inodes in preen mode, and truncation
of extent inodes on the orphan list.
Fixed more OS X portability issues.
E2fsprogs 1.42.3 (May 14, 2012)
===============================
Fix a bug in the Unix I/O manager which could cause corruption of file
systems with more than 16TB when e2fsprogs is compiled in 32-bit mode
(i.e., when unsigned long is 32-bits). Also fix a bug which caused
dumpe2fs to incorrectly display block numbers > 32-bits.
Improve the support for integrated quota files (where quota is a first
class supported feature using hidden files in the ext4 file system).
Previously the quota file was getting rewritten even when it was not
necessary, and e2fsck would erroneously try to hide quota files which
were already hidden.
Quiet complaints in e2fsck when the total free blocks or inodes are
incorrect in the superblock after an system crash, since we don't
update nor depend on the superblock summaries at each commit boundary.
Fixed a regression introduced in 1.42.2 which would cause applications
outside of e2fsprogs which did not pass the EXT2_FLAG_64BIT (and so
would were still using the legacy 32-bit bitmaps) to crash. This was
due to missing 32-bit compat code in side the function
ext2fs_find_first_zero_generic_bmap(). (Addresses Red Hat Bugzilla:
#808421)
Fix a bug which would cause mke2fs to fail creating the journal if
/etc/mtab and /proc/mounts are missing. (Addresses Sourceforge Bug:
#3509398)
Updated/fixed various man pages.
Update Czech, Dutch, French, German, Polish, Sweedish, and Vietnamese
translations
Fixed various Debian Packaging issues.
Programmer's Notes
------------------
Change the nonsensically wrong types in the function signature of the
inline function ext2fs_find_first_zero_block_bitmap2(). This was
caused by a cut and paste error; fortunately no code in e2fsprogs used
this inline function, and there are any users of this functions
outside of e2fsprogs.
Add support for systems which have valloc(), but which do have
posix_memalign() nor memalign() (such as MacOS 10.5).
Refactor and clean up the allocation of aligned buffers for Direct I/O
support. Previously some allocations were requesting a greater
alignment factor that what was strictly necessary. Also optimize
reading and writing bitmaps using Direct I/O when the size of the
bitmap did not fully cover the file system blocksize.
Reserve the codepoints for the INCOMPAT features LARGEDATA and
INLINEDATA.
Improved the regression test suite by adding some new integration
tests (f_jnl_32bit, f_jnl_64bit) which detect breakage of the on-disk
jbd2 format, as well as f_eofblocks which tests the new handling of
uninitialized and initialized blocks beyond i_size. Also add a new
unit test which verifies 32-bit bitmaps support and the new
find_first_zero primitives.
Add a few dependencies to fix parallel (make -j) builds.
Removed bash'isms which were breaking the regression test suite on
systems where /bin/sh is not bash.
The config.guess and config.sub have been updated to the 2012-02-10
version.
Fix a portability problem caused by assuming the present of mntent.h
means that setmntent() exists. Instead, explicitly test for this in
the configure script.
If the sys/signal.h header file does not exist, don't try to include
it, since it's not available on all systems.
Add support for systems that do not support getpwuid_r()
The configure script now supports a new option,
--enable-relative-symlinks, which will install relative symlinks for
the ELF shared library files. (Addresses Sourceforge Bug: #3520767).
When building BSD shared libraries make sure the LDFLAGS variable is
passed to the linker. Fixing this allows, for example, e2fsprogs to
be built in 32-bit mode on Mac OS X Lion (Addresses Sourceforge Bug:
#3517272)
Fix gcc -Wall nitpicks
E2fsprogs 1.42.2 (March 27, 2012)
=================================
The resize2fs program uses much less CPU and is much faster for very
large file systems. (Addresses Debian Bug: #663237)
The seti and freei commands in debugfs can now take an optional length
argument to set and clear a contiguous range of inodes.
E2fsck will now make explicit checks for the EOFBLOCKS_FL, since we
plan to remove support for it from the kernel file system driver. It
really wasn't very useful and was causing more problems than it
solves. Since e2fsck will complain if inodes that should have
EOFBLOCKS_FL do not have the flag set, we are going to remove this
check from e2fsprogs first, and then only remove the flag from the
kernel much later.
The mke2fs program can now use direct I/O via "mke2fs -D". This will
slow down the mke2fs, but it makes it more polite on a loaded server
by limiting the amount of memory that gets dirtied by mke2fs when it
is using buffered I/O.
E2fsck was needlessly closing and re-opening the file system as a side
effect of adding Multiple Mount Protection (MMP). This isn't
necessary for non-MMP file systems, so drop it.
Print errors returned by ext2fs_open2() and ext2fs_check_desc() so we
can more easily diagnose memory allocation failures caused by
insufficient memory. E2fsck will now abort if there are memory
allocation failures when the file system is initially opened and
during the block group descriptor checks. (Addresses Google Bug:
#6208183)
If there are incorrect block group checks, e2fsck will now report the
incorrect and corrected checksum values.
The e2fsck progam can now write log files containing the details of
the problems that were found and fixed directly, via configuration
parameters in /etc/e2fsck.conf.
Added the ability to limit the number of messages reported by e2fsck
for a given problem type. This avoids a potential bottleneck if there
is a serial console which can cause a boot sequence to take a long
time if e2fsck needs to report many, many file system errors.
The dumpe2fs, debugfs, and tune2fs now use rbtree bitmaps, which cause
them to use much less memory for large file systems.
The dumpe2fs program will now print the expected block group checksum
if it is incorrect. This helps to diagnose problems caused by
incorrect block group checksums.
E2fsck now checks for extents with a zero length, since the kernel
will oops if it comes accross such a corrupted data structure. (See
https://bugzilla.kernel.org/show_bug.cgi?id=42859)
E2fsck has a number of bugs relating to discard that have been fixed.
(1) Fixed a bug which could cause e2fsck to discard portions of the
inode table which were actually in use. (2) E2fsck will now avoid
using discard if the block device doesn't zero data on discard, since
otherwise this could cause problems if the file system gets corrupted
in the future. (3) E2fsck will now avoid using discard when it is run
in read-only mode. (4) Fixed a bug which caused e2fsck to not issue
discards in the last block group.
E2fsck's CPU utilization in pass 5 has been optimized, which will
speed up e2fsck slightly.
E2image will now skip copying uninitialized bitmap and inode table
blocks.
Fixed mke2fs -S so it does not corrupt the first block group's
information.
E2fsck will now check the new sysfs interface to determine if we are
using the battery or AC mains. (Addresses SourceForge Bug: #3439277)
Updated/fixed various man pages. (Addresses Debian Bug: #665427)
Fixed various Debian Packaging issues. (Addresses Debian Bug: #665885)
Programmer's Notes
------------------
Fixed various portability issues for non-Linux systems, particularly
MacOS X, as well as Linux systems running with the just-released glibc
2.15.
Fix file descriptor leak in ext2fs_close() if the file system with
uninit_bg is opened read/only with a backup superblock. (Addresses
SourceForge Bug: #3444351)
Fixed an invalid return in a non-void function in the quota code.
(Addresses SourceForge Bug: #3468423)
Fixed the debian rules file so that the calls to dpkg-buildflags works
when the shell is dash.
The debian package build now uses V=1 so that there is more
information about potential build failures in debian buildd logs.
If the uninit flags get cleared by functions such as
ext2fs_new_inode() or ext2fs_new_block2(), we now make sure the
superblock is marked dirty and the block group descriptor checksum is
updated if necessary.
The debian rules file will now try to load debian/rules.custom of it
exists. This flie can skip various builds for speed reasons if there
is no need for the e2fsck-static or udeb packages. Available
customizations in the rules file includes SKIP_STATIC=yes,
SKIP_BF=yes, and SKIP_DIETLIBC=yes.
In addition, if the file misc/mke2fs.conf.custom.in exists in the
source tree, it will be used instead of the standard misc.conf file in
the upstream sources. This makes it easier for Debian-derived systems
to distribute a custom mke2fs.conf file without having to worry about
merge issues if future versions of e2fsprogs makes changes in the
upstream default version of mke2fs.conf.
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.
E2fsprogs 1.42 (November 29, 2011)
==================================
This release of e2fsprogs has support for file systems > 16TB. Online
resize requires kernel support which will hopefully be in Linux
version 3.2. Offline support is not yet available for > 16TB file
systems, but will be coming.
This release of e2fsprogs has support for clustered allocation. This
reduces the number of block (now cluster) bitmaps by allocating and
deallocating space in contiguous power-of-2 collections of blocks,
which are called clustered. This is a file system level feature,
called 'bigalloc', which must be enabled when the file system is
initially formatted. It is not backwards compatible with older
kernels.
Added support for the Multi-Mount Protection (MMP) feature.
E2fsck more efficiently uses scratch files for really big file
systems. (This is a feature that has to be turned on explicitly; see
[scratch_files] in the e2fsck.conf man page.)
Fix a bug in e2fsck where if the free blocks and inodes counts are
incorrect, e2fsck would fix them without printing an error message.
This would cause a "*** FILE SYSTEM WAS MODIFIED ***" message without
any explanation of what was fixed.
E2fsck will no longer attempt to clone an extended attribute block in
pass1b handling if the file system does not support extended
attributes.
E2fsck will be more careful accidentally asking the user to continue
if the file system is mounted, so that an escape sequence won't cause
a false positive. (Addresses Debian Bug: #619859)
E2fsck now uses less cpu time in pass 5 when large portions of the
bitmaps are uninitialized.
E2fsck will no longer segault when a corrupted file system has a bad
extent, and removing it leads to a block needing to be deallocated.
(Addresses SourceForge Bug: #2971800)
E2fsck will catch termination signals (segfaults, bus errors, sigfpe)
and print debugging information to make it easier to find potential
problems.
E2fsck will check to see if the bad block inode looks insane, and will
skip trying to use if it certain fields which should be zero look
non-zero. This is to avoid a corrupted bad block inode causing e2fsck
to get confused and do more harm than good.
If e2fsck modifies certain superblock fields which the kernel doesn't
look at, it will now mark the superblock as dirty without marking the
file system as changed. This avoids signalling the init scripts that
a reboot is necessary, since the kernel isn't going to look at those
fields, so it won't care if they have been changed.
Fixed a bug in the libext2fs library (in the binary search routine of
the icount abstraction) that could (very, very rarely) cause e2fsck to
die in the middle of pass 1 or pass 2 processing.
E2fsck will not try to do a discard operation if the -n option was
specified on the command line.
E2fsck now supports an extended "discard" option which will cause
e2fsck to attempt discard all unused blocks after a full, successful
file system check.
E2fsck will check for the bad block inode to make sure it looks sane
before trusting it, to avoid causing more harm than good to the file
system.
E2fsck now returns additional status bits in its exit code if it
aborts early in the e2fsck run.
E2fsck now correctly calculates the maximum file size in the case of
the huge_file file system feature enabled without extents.
The mke2fs and e2fsck programs now tries to use the punch hole command
as a "discard" when operating on normal files.
The e2image program now supports the qcow2 format, which is a more
efficient way of capturing file system dumps.
Mke2fs now supports the [devices] stanza in mke2fs.conf which allows
per-device defaults to be specified in the configuration file.
Mke2fs now supports the reserved_ratio relation in the [defaults] and
[fs_types] section in mke2fs.conf.
Mke2fs now creates extent-mapped directories for the root and
lost+found directories.
Mke2fs will skip zero'ing the journal if the extended option
"lazy_journal_init" is specified. This can save a lot of time, but it
does add a small amount of risk if the system crashes before the
journal is overwritten entirely once. It is epsecially useful for
testing.
Mke2fs will now create file systems that enable user namespace
extended attributes and with time- and mount count-based file
system checks disabled.
Mke2fs will not set a stride or strip size of one block based on block
device attributes obtained from sysfs.
Mke2fs now displays a progress report during the discard process.
Mke2fs now handles extreme file system parameters correctly which
previously caused the inodes per group to drop below 8, leading to a
segfault. (The inodes per group must be a multiple of 8, but the code
didn't correctly deal with an inodes per group count less than 8.)
Mke2fs and tune2fs previously would give an error if the user tried
setting the stride and stripe-width parameters to zero; but this is
necessary to disable the stride and stripe-width settings. So allow
setting these superblock fields to zero. (Addresses Google Bug:
#4988557)
Mke2fs now gives a warning if the auto-detected block size exceeds the
system's page size.
If the enable_periodic_fsck option is false in /etc/mke2fs.conf (which
is the default), mke2fs will now set the s_max_mnt_count superblock
field to -1, instead of 0. Kernels older then 3.0 will print a
spurious message on each mount then they see a s_max_mnt_count set to
0, which will annoy users. (Addresses Debian Bug: #632637)
The default mke2fs.conf now has entries for "big" and "huge", which
are needed for very big file systems.
The resize2fs program now has support for a new online resize ioctl
that can support file systems > 16TB, once it arrives in v3.x kernels.
Fixed bug which caused resize2fs to fail when shrinking an empty file
system down to its minimal size. (Addresses Sourceforge Bug #3404051)
Fixed tune2fs's mount options parsing. (Addresses Debian Bug: #641667)
Allow tune2fs to remove external journals if the device can not be
found.
Debugfs's icheck will now correctly find inodes which use the
searched-for block as an extended attribute block.
Debugfs now has a new "punch" command which remove blocks from the
middle of an inode.
Debugfs now has a new "e2freefrag" command which analyzes the free
space fragmentation of the file system, using the same code as the
e2freefrag program.
Debugfs now has a "filefrag" command which displays information about
a file's fragmentation.
Add support to build a metadata-only, read-only, stripped-down version
of debugfs called rdebugfs.
Fixed a potential stack overrun bug in debugfs.
The badblocks program now correctly recovers from I/O errors when
direct I/O is being used. The badblocks command now also supports a
-B option which forces the use of buffered I/O, and the -v option will
provide a more detailed breakdown of read, write, and failed
comparison errors.
Added e4defrag tool which uses the EXT4_IOC_MOVE_EXT ioctl.
Added support for journals larger than 2GB.
Support using both hard links and symlinks when installing e2fsprogs.
Add overflow checking to tune2fs -i's fsck interval, which must fit in
a 32-bit field.
The debugfs command now has a new 'blocks' command which prints out
data blocks of a particular inode in a format which is useful for
scripting.
Filefrag will report 0 extents correctly in verbose mode. (Addresses
RedHat Bugzilla: #653234)
Filefrag has been fixed so its -v report prints the correct expected
block number (previously there had been an off-by-one error). In
addition, it will now display the number of contiguous extents when -v
is not specified. This makes it consistent with the number of extents
printed when the -v option was specified. In addition, the number of
contiguous extents is far more interesting/useful than the number of
physical extents for very large files. (Addresses Debian Bug:
#631498, #644792)
Logsave's usage message has been fixed. (Addresses Debian Bug:
#619788)
Avoid an infinite loop in ext2fs_find_block_device() if there are
symlink loops in /dev caused by a buggy udev.
Added a useful "fallocate" program to the contrib directory.
Fixed an ABI compatibility problem in libext2fs which broke the dump
program. Also added back some macros which dump needed so it could
compile against the latest version of ext2_fs.h (Addresses Debian Bug:
#636418)
Fixed parsing of MNTOPT_ options for tune2fs and debugfs (Addresses
Debian Bug: #641667)
Added internationalization support for libcom_err error table strings.
Fixed various spelling mistakes found in various output strings found
by I18N translators.
Update translations: French, Chinese, Germany, Indonesian, Swedish,
Vietnamese, Polish, Dutch, Czech. (Addresses Debian Bugs: #520985,
#620659)
Fixed various Debian Packaging issues. (Addresses Debian Bugs:
#614662, #632169, #641838, #627535, #629355)
Updated/clarified man pages. (Addresses Debian Bugs: #639411,
#642193, #634883)
Programmer's Notes
------------------
Initial support for quota as an integrated feature, where the quota
files are hidden system files that are automatically maintained by
e2fsck is present, although disabled by default. It must be enabled
by using the configure option --enable-quota.
Reserved the on-disk fields for the metadata checksum and snapshot
features, which are currently in development.
The ext2fs library now has the new functions ext2fs_punch(),
ext2fs_get_memzero() and ext2fs_file_get_inode().
The ext2fs library now has support for calculating the crc32c checksum
(via the new functions ext2fs_crc32c_be and ext2fs_crc32c_le).
The I/O manager now supports the discard operation.
Reserved file system code points for new 1st class quota feature.
Shortened the compilation lines by moving the autoconf defines to
a config.h header file.
Fixed a potential free of an unitialized pointer in
ext2fs_update_bb_inode().
Fixed miscellaneous gcc -Wall and coverity warnings.
Fixed portability issues for Mac OS X, Hurd, and FreeBSD.
Fixed a build failure when OMIT_COM_ERR is defined.
Improved error checking and fixed memory leaks caused by error return
paths.
Add ext2fs_flush2() and ext2fs_close2() which takes a flag to allow
the fsync() to be skipped.
Added a test for extent-mapped journals by mke2fs and tune2fs.
Added a test for creating a large (over 4GB) journal using mke2fs.
Added a test to make sure the inode size remains constant.
The regression test script now prints the list of which tests failed.
The regression test system now uses /tmp for its scratch files, which
is often a tmpfs mounted file system and hence much faster.
The i_e2image test was fixed so it works with valgrind.
Tests that rely on debugfs are now skipped if debugfs wasn't built.
Fixed the dependencies for "make check" so all required dependencies
are built before running the gression tests.
A link to com_err.h is installed in $(includedir) during a "make install".
The po/*.gmo files are automatically rebuilt if they are missing or
out of date. This helps out Debian packaging.
Allow ext2fs_get_memalign() to compile on systems that don't have