Add a more explicit description of how specifying the flex_bg file
system feature changes the layout of the per-block group metadata.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The feature name "extent" is documented in mke2fs.conf, although both
"extent" and "extents" are accepted by e2fsprogs.
Addreses-Debian-Bug: #540111
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When increasing inode size if we find that the new block
that we needed to increase the inode table size is a bad
block we fail. This make sure we don't end up with a corrupt
file system when doing inode resize on a file system having
bad blocks.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
With file system formated for RAID arrays we can have inode bitmap
and block bitmap after inode table. Make sure we move them around
properly when doing inode resize.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This removes the metadata block bitmap and makes the error handling
simpler. It also check for the enospc with the correct number needed
blocks. Also added specific error messages. We need to run e2undo
only if we start modiyfing inode, group desc and inode table.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The extent list header gets printed before we fall back to bmap:
# filefrag -v /mnt/test/bar
Filesystem type is: 58465342
File size of /mnt/test/bar is 12288 (3 blocks, blocksize 4096)
ext logical physical expected length flags <---- HERE
Discontinuity: Block 2 is at 17 (was 16)
/mnt/test/bar: 2 extents found
so delay printing it until we know fiemap is working.
(though ideally it'd be nice to have the same verbose output
regardless of the interface we used, I think).
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The fragmentation count in the bmap case seems to be
off by one:
/mnt/test/bar: 0 extents found
Addresses-Debian-Bug: #540376
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Fix a bug in e2freefrag where if the last free extent is at the very
end of the filesystem, it would be disregarded.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the file system has a non-zero s_first_data_block, as is the case
when the block size is 1kb, e2freefrag would incorrectly try to
reference invalid data blocks in the block allocation bitmap.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
"Free chunks" is confusing since it has nothing to do with the
chunksize; use "free extents" instead.
Also add a missing newline in an error message.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The FIEMAP support added in e2fsprogs 1.41.6 broke the "perfection
would be XXX expects" calculation restore it.
Also fix some gcc -Wall warnings as well. (Cleaning up gcc -Wall is
what caused me to notice this regression).
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When used with -v and the targeted file has more than 144
extents(double of the length of fm_extents array provided by buf),
filefrag_fiemap loops and calls fiemap ioctl() multiple times to
calculate the actual number of extents in a file. Each call to fiemap
ioctl() uses fm_start as the starting logical offset. The patch fixes
fm_start in each loop( except for the first one) and makes the extent
calculation correct for files with more that 144 extents.
To produce the problem, first run filefrag -v on a highly fragmented
file. Then change the buf size in filefrag_fiemap to make it large
enough to have all the extent mapped in a single loop and run filefrag
-v after recompiling. The former will produce a much smaller extent
count because of the false fm_start used in the loop. And the two will
produce different extent output since the 145th extent.
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Some people don't want to see the concise "kernel-style" make output.
This configure option allows build engines that want to see the full
set of commands executed by the makefile to get what they want. Most
people will find this more distracting than useful, unless they need
to debug the Makefiles.
(It is not necessary to rerun configure to enable this verbose make
output temprarily; if a developer wants to do a quick debug of a
directory's makefile, he or she can simply edit the definition of the
$(E) and $(Q) variables in the Makefile; instructions can be found in
the MCONFIG file which is included in at the beginning of every
Makefile.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The e2fsprogs makefiles were using the same Makefile variable
LIBCOM_ERR for the link-line arguments as well as the dependencies.
Since LIBCOM_ERR can now include non-file arguments such as
"-lpthread", we need to use a separate DEPLIBCOM_ERR variable that
only has build file dependencies.
Do the same thing for STATIC_LIBCOM_ERR and PROFILED_LIBCOM_ERR.
Addresses-Sourceforge-Patches: #2813809
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If for some reason the uuidd daemon or the process calling uuidd
exited unexpectely, the read_all() function would end up looping
forever, either in uuidd or in libuuid. Fix this terminating the loop
if no data can be read after five tries to read from the file
descriptor.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In the event that file descriptors 0-2 are closed when uuidd is
started, the server socket could be created as a file descriptor that
will get closed when create_daemon() tries detaching the uuidd daemon
from its controlling tty. Avoid this case by using dup(2).
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Some terminal programs may print wierd characters when they see the
\001 or \002 characters. So filter them out if the -s option
(skip_mode) is enabled.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
lsattr doesn't return an error if you point it at a file that
doesn't exist.
This is slightly trickier because it can take more than one
file as an arg, but ls seems to report an error if any occurred,
so this does the same, it'll report the last error that was
encountered.
Addresses-RedHat-Bugzilla: #489841
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Previously e2fsprogs interpreted 0 for a rec_len of 65536 (which could
occur if the directory block is completely empty in 64k blocksize
filesystems), while the kernel interpreted 65535 to mean 65536. The
kernel will accept both to mean 65536, and encodes 65535 to be 65536.
This commit changes e2fsprogs to match.
We add the encoding agreed upon for 128k and 256k filesystems, but we
don't enable support for these larger block sizes, since they haven't
been fully tested.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The e2fsprogs programs have historically just said that they operate
on ext2 and ext3 file system in their man pages. Update them to say
that they also operate on ext4 file systems.
Addresses-Launchpad-bug: #381854
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Tidy up the chattr(1) manpage to completely document all
available options, and differentiate those which are read-only
early in the manpage as well.
* Remove "I" from settable attribute list
* add "e" to 2nd list of settable attributes & descriptions
* Note that h/E/I/X/Z are readonly
* Correct "H" to "h" for huge file attribute description
* fix long_name for indexed directory in flags_array
Addresses-Red-Hat-Bugzilla: BZ#502971
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This patch adds new option, +e to chattr. The +e option
is used to convert the ext3 format (non extent) file
to ext4 (extent) format. This can be used to migrate
the ext3 file system to ext4 file system.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The FIEMAP ioctl is more efficient and doesn't require root
privileges. So if it is available, use it in preference to repeated
FIBMAP calls.
Signed-off-by: Kalpak Shah <kalpak.shah@sun.com>
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fixed a potential bug where by partial returns from the write(2)
system call could some bytes to be lost when writing to the log file.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add an option to switch between the private (in-tree) libblkid and
public (in-system installed) library. The private version is still
enabled by default.
If --disable-libblkid is specified the findfs(8) program, which is a
variant of tune2fs, is also not built or installed.
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Theodore Ts'o