Also fixed a number of other minor nits in the resize2fs and e2image
man pages.
Addresses-Debian-Bug: #674453, #674694
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The indentation in tune2fs man page was wrong towards the
end. Also, there was extra '[' in the SYNOPSIS section.
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Change autoconf to test for setmntent() and use that to decide whether
to use getmntent() and setmntent(), since some systems don't have
setmntent() but they do have the mntent.h header file.
Also, remove the includes of mntent.h from e2fsck and mke2fs and other
places where it is not needed.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The ext2fs_add_journal_inode() function calls
ext2fs_check_mount_point(), which can fail if /etc/mtab is missing.
This causes mke2fs to fail in the middle of the file system format
process; mke2fs calls ext2fs_check_mount_point() already (and has
appropriate fallbacks that calls fails), so add a flag so that mke2fs
can request ext2fs_add_journal_inode() to skip trying to call
e2fsck_check_mount_point().
Addresses-Sourceforge-Bug: #3509398
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Rename mke2fs.conf to mke2fs.conf.in, so that the makefile can choose
to use either mke2fs.conf.in or mke2fs.conf.custom.in (if it is
present). If there is custom configuration file, it's likely that it
is very different from the upstream mke2fs.conf.in, so by having the
separate mke2fs.conf.custom.in file, it minimizes merge conflicts if
the upstream mke2fs.conf file changes.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This can be useful when using mke2fs on loaded servers, since
otherwise mke2fs can dirty a huge amount of memory very quickly,
leading to other applications not being happy at all.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When the block bitmap is uninitialized, skip copying it.
When the inode bitmap is uninitialized, skip copying it,
as well as the inode table. When there are unused inodes
towards the end of the table, skip those blocks too.
Signed-off-by: Phillip Susi <psusi@ubuntu.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
There was a bug/typo in commit ba9e0afc5 which caused the first block
group (bg #0) to not have its unused inode count field to get set to
zero in the case of mke2fs -S. This caused inodes in the first block
group to not be recoverable via mke2fs -S. Oops.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If ftruncate64() exists, try to use it to set i_size. This isn't
guaranteed to work, per SuSv3, but if it doesn't work, it's guaranteed
to return an error. So for file systems and/or operating systems that
don't support extending i_size via ftruncate64(), fall back to writing
the trailing null.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the size of the last "hole" in the raw file was an exact multiple
of a megabyte, then we wouldn't write a null at the end of the file in
order to extend the size of the raw image to correspond with the file
system size. Thanks to Lukas Czerner for suggesting the fix, and
Phillip Susi for pointing out the problem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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. If the uninit_bg feature is enabled, we need to make sure to
clear the unused inodes count field in the block group descriptors or
else e2fsck -fy will leave the file system completely empty.
Thanks to Akira Fujita for reporting this problem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
We shipped "mke4fs" alongside mke2fs in RHEL5, so that ext4-capable
utilities could be installed without disturbing the venerable e2fsprogs-1.39
shipped in RHEL5 from the beginning. But it surprised some users that
"mke4fs" created ext2 filesystems by default rather than ext4.
While it was my intent to have the renamed binaries behave exactly
like the stock ones, it seems that there is some precedence for
handling "mkeNfs" in the code, so seems reasonable to add
mke4fs -> ext4 as well.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The option '-G' is used to pass number of groups in a flex_bg, the
previous help text - 'meta-group-size' - could confuse users with
meta_bg.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
There is a slight desync between the mke2fs(8) man page and the mke2fs
help output when it comes to the -t/-T options. Since the man page is
correct, update the mke2fs usage string to match.
Reported-by: Ben Kohler <bkohler@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
A 32-bit s390 build was failing on a 64-bit s390x host, when
make check failed e2undo tests, like this:
md5sum before mke2fs 922c8a591c882dbdd1a381d18547cfd5
using mke2fs to test e2undo
Overwriting existing filesystem; this can be undone using the command:
e2undo /tmp/mke2fs-tmp.EM9XjmTA81.e2undo /tmp/tmp.EM9XjmTA81
md5sum after mke2fs cbf32fb6c3db45280ad013f42ac294f1
Replayed transaction of size 32768 at location 0
Replayed transaction of size 32768 at location 0
Replayed transaction of size 32768 at location 0
Replayed transaction of size 32768 at location 0
Replayed transaction of size 0 at location 0
md5sum after e2undo 31b4e14307c5b7ccce5b8d300c2ad5f1
Note the "at location 0" for the block number.
A proper cast in e2undo.c fixes this up.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The freefrag command provides the functionality of e2freefrag on the
currently open file system in debugfs.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When turn on quota by tune2fs, if the old quota file exist, the quota
usage should be recomputed but the old limits should be preserved.
Signed-off-by: Niu Yawei <niu@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
mke2fs was creating both user and group quota inodes on enabling
the quota feature. This patch adds the extended option 'quotatype'
that can be used to exclusively specify the quota type that the
user wants to initialize.
# Ex: Default behavior without extended option creates both
# user and group quota inodes:
$ mke2fs -t ext4 -O quota /dev/ram1
# To enable only user quotas:
$ mke2fs -t ext4 -O quota -E quotatype=usr /dev/ram1
# To enable only group quotas:
$ mke2fs -t ext4 -O quota -E quotatype=grp /dev/ram1
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When turning on the quota feature, tune2fs would create empty quota inodes and
set their inode numbers in superblock. This required e2fsck to be ran before
using the quota feature. This patch adds adds call to compute_quota() and make
sure that we write correct quota information in the quota files at tune2fs time
itself. This gets rid of the necessity for running e2fsck after setting the
quota feature. Also, tune2fs now does not use existing old quota files
(aquota.user and aquota.group) even if they exist.
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This patch cleans up the quota code as suggested in previous reviews. This
includes
* remove BUG_ON()s and 'exit()' calls from library code
* remove calls to malloc/free and instead use ext2fs_get/free_mem functions.
* lib/quota/common.c file in not needed anymore and is removed.
* rename exported functions to start with quota_
(ex: init_quota_context --> quota_init_context)
* better error handling in quota library
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Quota support can be enabled using --enable-quota. There are still
some buglets that we need to fix up before it can be considered 100%
supported, so let's disable it for the 1.42 release.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
After:
# mke2fs -O ^has_journal,^resize_inode,^uninit_bg,extent,meta_bg,flex_bg,bigalloc /dev/sda
# e2freefrag /dev/sda
It will report error message like:
Illegal block number passed to ext2fs_test_block_bitmap #1732133 for block bitmap for /dev/sda
Illegal block number passed to ext2fs_test_block_bitmap #1732134 for block bitmap for /dev/sda
Illegal block number passed to ext2fs_test_block_bitmap #1732135 for block bitmap for /dev/sda
One bit in bitmap of bigalloc-ext4 means a cluster not a block,
therefore ext2fs_fast_test_block_bitmap2 should check cluster.
Signed-off-by: Robin Dong <sanbai@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The ext2fs_file_acl_block() and ext2fs_set_file_acl_block() needs to
only check i_file_acl_high if the 64-bit flag is set. This is needed
because otherwise we will run into problems on Hurd systems which
actually use that field for h_i_mode_high.
This involves an ABI change since we need to pass ext2_filsys to these
functions. Fortunately these functions were first included in the
1.42-WIP series, so it's OK for us to change them now. (This is why
we have 1.42-WIP releases. :-)
Addresses-Sourceforge-Bug: #3379227
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Commit a00be17e47 was missing a patch hunk needed to prevent
filefrag from looping forever when it is run without the -v option.
Addresses-Debian-Bug: #644792
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Also remove the _("<foo>") marker from a string that was all numbers
and hence didn't need punctuation.
Thanks to Philipp Thomas and Goeran Uddeborg for reporting these
buglets.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Commit c6ed60cd removed "f" (fragment size) from the getopt string,
and re-used its spot in the getopt switch, but didn't update the
usage message or the error message during parsing.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
For those e2fsprogs programs which use libcom_err and are
internationalized, pass the gettext() function to libcom_err during
program initialization.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The get_qf_name() function used PATH_MAX, which is non-portable.
Worse, it blindly assumed that PATH_MAX was the size of the buffer
passed to it --- which in the one and only place where it was used in
libquota, was a buffer declared to a fixed size 256 bytes.
Fix this by simply getting rid of the function altogether.
Cc: Aditya Kali <adityakali@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
mke2fs attempts to use the "big" and "huge" types, and now that mke2fs
will complain if there are file system types which are undefined,
let's add definitions for them.
Thanks to Richard Jones for reporting this problem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
From a bug report filed by Ibragimov Rinat:
When filefrag uses FIEMAP ioctl its logic differs for ordinary and
verbose (-v) modes. ext4 returns extent on every 32768 block so on
large files it is possible that `filefrag large-file' tells about 4
extents while `filefrag -v large-file' finds only one.
Also when I tried to use generic_block_fiemap function to add
FIEMAP for reiserfs, every block was reported as a new extent
resulting in thousands "extents" for continuous files.
I think filefrag should merge adjacent extents even when -v is not
specified.
Addresses-Debian-Bug: #631498
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Explain more clearly how boolean relations in the mke2fs.conf file are
parsed, and which config parameters are in fact boolean relations.
Addresses-Debian-Bug: #634883
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the enable_periodic_fsck option is false in /etc/mke2fs.conf (which
is also the default), s_max_mnt_count needs to be set to -1, instead
of 0. Kernels newer than 3.0 will interpret 0 to disable periodic
checks, but older kernels will print a warning message on each mount,
which will annoy users.
Addresses-Debian-Bug: #632637
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add tests for the MMP feature - creating a filesystem with mke2fs
and MMP enabled, enable/disable MMP with tune2fs, disabling the
e2fsck MMP flag with tune2fs after a failed e2fsck, and e2fsck
checking and fixing a corrupt MMP block.
The MMP tests need to be run from a real disk, not tmpfs, because
tmpfs doesn't support O_DIRECT reads, which MMP uses to ensure
that reads from the MMP block are not filled from the page cache.
Using a local disk does not slow down the tests noticably, since
they wait to detect if the MMP block is being modified.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Multi-mount protection is feature that allows mke2fs, e2fsck, and
others to detect if the filesystem is mounted on a remote node (on
SAN disks) and avoid corrupting the filesystem. For e2fsprogs this
means that it checks the MMP block to see if the filesystem is in use,
and marks the filesystem busy while e2fsck is running on the system.
This is useful on SAN disks that are shared between high-availability
servers, or accessible by multiple nodes that aren't in HA pairs. MMP
isn't intended to serve as a primary HA exclusion mechanism, but as a
failsafe to protect against user, software, or hardware errors.
There is no requirement that e2fsck updates the MMP block at regular
intervals, but e2fsck does this occasionally to provide useful
information to the sysadmin in case of a detected conflict.
For the kernel (since Linux 3.0) MMP adds a "heartbeat" mechanism to
periodically write to disk (every few seconds by default) to notify
other nodes that the filesystem is still in use and unsafe to modify.
Originally-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: Johann Lombardi <johann@whamcloud.com>
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Continue to remove the external journal device even if the device
cannot be found.
Add a test to verify that the journal device/UUID are actually removed
from the superblock. It isn't possible to use a real journal device
for testing without loopback devices and such (it must be a block device)
and this would invite complexity and failures in the regression test.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Several compiler errors are quieted:
- zero-length gnu_printf format string
- unused variable
- uninitalized variable (though it isn't actually used for anything)
- fixed a bug in ext2fs_stat() if stat64() does not exist
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The DEFS line in MCONFIG had gotten so long that it exceeded 4k, and
this was starting to cause some tools heartburn. It also made "make
V=1" almost useless, since trying to following the individual commands
run by make was lost in the noise of all of the defines.
So fix this by putting the configure-generated defines in lib/config.h
and the directory pathnames to lib/dirpaths.h.
In addition, clean up some vestigal defines in configure.in and in the
Makefiles to further shorten the cc command lines.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
if tdb_dir points to a string allocated from profile_get_string,
it should be freed again before we exit.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In theory sysconf() can fail, so check for an error return.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
These reflect either file descriptors which aren't tested
for failure, or closures of fd's which may have failed.
In setup_tdb(), test for failure of mkstemp and return
without trying to open the file (again).
In reserve_stdio_fds, rather than closing the "extra"
fd == 3 due to the way the loop is written, just
don't go that far by using while (fd <= 2).
In logsave, it forks and retries forever if open fails,
but at least make coverity happy by explicitly not
trying to close a negative file descriptor.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Handle these failures in resize_inode, and handle the propagated
error in the caller.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Some error paths did not properly free "buf"
And the normal exit seemed to close e2_file twice (?)
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In addition to not making sense, it causes a memory leak
when fs_type gets overwritten.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The "count" variable is only ever set if FIBMAP is used,
due to the -B switch, or a fiemap failure. However,
we use it unconditionally to calculate "expected" for
extN files, so we can end up printing garbage.
Initialize count to 0, and unless we go through the FIBMAP
path, expected will be 0 as well, and in that case do not
print the message.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
There is no need to print out a "bad option" message; getopt
does that for us, and in fact will change "c" to "?" so
it's not even useful.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Specifying the "-n" option to uuidd would incorrectly
fall through to the "-p" case, and assign that number to
the pidfile_path.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
parse_fs_type explicitly sets usage_types if it is null,
so there is no need to test for null later.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The i++; statement is unreachable; fix same as commit
f1c2eaac535bd9172a35ce39b6d8f392321f274d in util-linux
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If e2fsprogs tools (mke2fs, e2fsck) is run on regular file instead of
on block device, we can use punch hole instead of regular discard
command which would not work on regular file anyway. This gives us
several advantages. First of all when e2fsck is run with '-E discard'
parameter it will punch out all ununsed space from the image, hence
trimming down the file system image. And secondly, when creating an
file system on regular file (with '-E discard' which is default), we
can use punch hole to clear the file content, hence we can skip inode
table initialization, because reads from sparse area returns zeros. This
will result in faster file system creation (without the need to specify
lazy_itable_init) and smaller images.
This commit also fixes some tests that would fail due to mke2fs showing
discard progress, hence the output would differ.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In many places we are using #ifdef HAVE_OPEN64 to determine if we can
use open64() but that's ugly. This commit creates two new helpers
ext2fs_open_file() for open() and ext2fs_stat() for stat(). Also we need
new typedef ext2fs_struct_stat for struct stat.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Block size can be specified manually via the -b option or deduced
automatically. Unfortunately, the check that it is still smaller than
the system page size is only performed right after the command line
options are parsed.
Therefore, if buggy or inappropriately installed/configured hardware
hints that larger block sizes have to be used, mkfs will silently create
a file system which can not be mounted on the system in question.
By moving the check beyond the last assignment to blocksize it is now
ensured, that mkfs will issue a warning even if inappropriate blocksize
was auto-detected.
The new behavior can be easily tested, by exporting the following
variables before running mkfs:
export MKE2FS_DEVICE_SECTSIZE=8192
export MKE2FS_DEVICE_PHYS_SECTSIZE=8192
Signed-off-by: Yury V. Zaytsev <yury@shurup.com>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In flush_l2_cache() we are using ext2fs_llseek() however we do not
properly detect the error code returned from the function, because we
are assigning it into ULL variable, hence we will not see negative
values.
Fix this by changing the type of the variable to ext2_loff_t which is
signed and hence will store negative values.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
We are doing ext2fs_flush() twice right now at the end of the mke2fs.
First by directly calling ext2fs_flush() which is intended to write
superblock and fs accounting information. And then it is invoked again
when we are calling ext2fs_close(), only this time, because the fs is
not dirty, we are writing out only superblock.
I think it is bad to call it twice because even when writing only super
block it takes some time on bigger file systems and moreover
ext2fs_close() can fail without any reasonable explanation for the user.
Also ext2fs_flush() is printing out progress and it is confusing for the
users.
Fix all this by removing the ext2fs_flush() and leaving it all to
ext2fs_close(). However we need to introduce new variables to store
check interval and max mount count, because fs structure is freed on
ext2fs_close() and we really want to print those information as the last
info for the user.
[ Fixed type mismatch in a printf format statement -tytso]
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This patch adds support for setting the quota feature in superblock
and allows selectively creating quota inodes (user or group or both)
in the superblock. Currently, modifying the quota feature is only
supported when the filesystem is unmounted.
Also, when setting the quota feature, tune2fs will use aquota.user or
aquota.group file inode number in superblock if these files exist.
Otherwise it will initialize empty quota inodes #3 and #4 and use them.
Here is how it works:
# Set quota feature and initialize both (user and group) quota inodes
$ tune2fs -O quota /dev/ram1
# Enable only one type of quota
$ tune2fs -Q usrquota /dev/ram1
# Enable grpquota, disable usrquota
$ tune2fs -Q ^usrquota,grpquota /dev/ram1
# Clear quota feature and remove quota inodes
$ tune2fs -O ^quota /dev/ram1
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
mke2fs also creates quota inodes (userquota: inode# 3 and
groupquota: inode #4) inodes while creating a filesystem when 'quota'
feature is set.
# To set quota feature and initialize quota inodes during mke2fs:
$mke2fs -t ext4 -O quota /dev/ram1
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
For consistency with other multi-word options, document the extended
option stripe_width instead of stripe-width. This also avoids the
complexity of parsing options that have an embedded '-'.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Mke2fs previously would give an error if the user tried setting the
stride and stripe-width parameters to zero; but this is necessary to
override the stride and stripe-width settings which get automatically
set from the block device's geometry information in sysfs. So allow
setting these parameters to zero.
Addresses-Google-Bug: #4988555
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The extended options parsing for mount_opts was horribly buggy.
Invalid mount options that had an argument would get interpreted as an
extended mount options. Fix this.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
lib/ext2fs/Makefile.in had a buggy entry for blkmap64_ba.c in $(SRCS),
which caused this source file to not have a valid Makefile dependency
entry, so blkmap64_ba.o would not get rebuilt when it needed to be.
Also updated the Makefile dependency for the misc directory while
we're at it.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Treat the s_blocks_count field in the superblock as a free block count
(instead of the number of free clusters) for bigalloc file systems.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add the ability to skip zeroing journal blocks on disk. This can
significantly speed up mke2fs with large journals. At worst the
uninitialized journal is only a very short-term risk (if at all),
because the journal will be overwritten on any new filesystem as
soon as any significant amount of data is written to disk, and
the new journal TID would need to match the offset/TID of an old
commit block still left on disk.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Add description of missing dir_index feature to tune2fs(8) man page.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Fix several types of compiler warnings (unused variables/labels),
uninitialized variables, etc that are hit with gcc -Wall.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If "mke2fs -n" is used, there should be no changes to the underlying
device. Unfortunately, when the "discard" option was added in commit
c7cd908be5, it did not check for the "-n"
flag, and will discard all data on a flash device even if "-n" is given.
Check for the "noaction" flag before discarding any filesystem data.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The log2 of the ratio of cluster size to block size is far more useful
than just storing the cluster size. So make this change, and then
define basic utility macros: EXT2FS_CLUSTER_RATIO(),
EXT2FS_CLUSTER_MASK(), EXT2FS_B2C(), EXT2FS_C2B(), and
EXT2FS_NUM_B2C().
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add the check of maximum check interval.
s_checkinterval is 32bit variable, so it cannot be set more than 2^32.
Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In e2fsprogs, the upper limit of reserved blocks count is a half of
filesystem's blocks count. This patch fixes the incorrect checks of
reserved blocks count.
Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Block devices may set minimum or optimal IO hints equal to
blocksize; in this case there is really nothing for ext4
to do with this information (i.e. search for a block-aligned
allocation?) so don't set fs geometry with single-block
values.
Zeev also reported that with a block-sized stripe, the
ext4 allocator spends time spinning in ext4_mb_scan_aligned(),
oddly enough.
Reported-by: Zeev Tarantov <zeev.tarantov@gmail.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o