Enhance the online resizing code to be more nuanced about resizing
restrictions. If the kernel supports meta_bg resizing, then we can
skip all of the restrictions. If the kernel does not support meta_bg
resizing, check more carefully to make sure there are enough reserved
gdt blocks, so that the user gets a clearer error message.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Resize2fs can't handle resizing flex_bg file systems that do not have
the resize inode, but when the kernel adds support for resizing using
the meta_bg layout, we should allow it be able to resize the file
system.
So move the flex_bg/resize_inode check to the just before we start
doing the off-line resize, instead of doing it earlier where it would
prohibit these file systems for both on-line and off-line resizes.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The file system overhead calculation in calculate_minimum_resize_size
was incorrect meta_bg file systems. This caused the minimum size to
underflow for very large file systems, which threw resize2fs into a
loop generally lasted longer than the user's patience.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The 16TB limit must be enforced regardless of whether the new size is
specified on the command line or implied by the size of the device,
but only if the file system does not support 64-bit block sizes, or
the kernel does not advertise support of meta_bg resizing.
Previously we were unconditionally enforcing it when it was implied by
the device size, but not if the new size was specified on the command
line.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the block group algorithm to use the same algorithm as the rest
of the metadata_csum. This mostly involves providing a helper
function to tell if group descriptors should have checksums set or
verified, and modifying the gdt checksum code to use the correct
algorithm.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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>
By passing EXT2_FLAG_64BITS to ext2fs_open2() we can avoid some
unnecessary redirection in critical paths. While resize2fs does not
currently otherwise support so big filesystems that this would matter,
passing this flag is entirely harmless and only tells libext2fs that
the caller has been recompiled against current headers.
With this change the CPU time needed to shrink a 100G filesystem drops
by 20%.
Signed-off-by: Sami Liedes <sami.liedes@iki.fi>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Clean up some compile warnings related to fstat64(), which is
verbosely deprecated on OSX.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
calculate_minimum_resize_size() forgot to account s_first_data_block
into minimum filesystem size. Thus in case the size of filesystem was
such that the last group had the minimal size (50 blocks + metadata
overhead), the code in adjust_fs_info() decided the group is unneeded,
removed it, and in some cases the resizing then failed with ENOSPC.
Fix the issue by properly accounting for s_first_data_block in
calculate_minimum_resize_size().
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Linux's compat_sys_ioctl() function, which is run when executing a
ioctl using a 32-bit binary on a 64-bit kernel, returns EINVAL when an
inode does not exist. Sigh. See /usr/src/linux/fs/compat_ioctl.c.
This is probably a kernel bug, but work around it for now.
Addresses-Debian-Bug: #644989
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>
This commit fixes a failure when running the commands:
dd if=/dev/zero of=fs bs=1k count=100k; mke2fs fs; resize2fs -Mp fs
We should not try truncating the file system if there is only a single
block group in the file system.
Addresses-Sourceforge-Bug: #3404051
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Commit 9f6ba888f0 added support for new online resize ioctl
EXT4_IOC_RESIZE_FS. It is also trying to avoid failure when this
ioctl() is not supported by the kernel however it is checking wrong
error code (EINVAL).
When the ioctl does not exist, errno is set to ENOTTY, so we should
check for that, rather than EINVAL which means that ioctl arguments
are not valid. So change the code to check for ENOTTY and allow
resize2fs to try to use the old approach. Also add some comments.
Addresses-Red-Hat-Bugzilla: #746284
Addresses-Debian-Bug: #644989
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
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>
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>
On-line resizing has been broken in the 1.42 series for two reasons:
(a) the call to the new EXT4_IOC_RESIZE_FS ioctl checked for ENOTTY to
indicate that the ioctl does not exist, when in fact EINVAL is what is
returned if the ioctl doesn't exist. (b) resize2fs was passing in a
pointer to a 64-bit value, when the ioctl expected a 32-bit value.
This was OK on little-endian systems, but it wouldn't work at all on
big-endian systems.
Fix both problems.
Addresses-Debian-Bug: #451388
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>
Code to count the number of blocks in the last partial
group is cut and pasted around the e2fsprogs codebase
a few times.
Making this a helper function should improve matters.
Signed-off-by: Eric Sandeen <sandeen@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>
This is needed to support online resizing for > 32-bit file systems
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The write_journal_inode() code is only setting the low 32-bit i_size
for the journal size, even though it is possible to specify a journal
up to 10M blocks in size. Trying to create a journal larger than 2GB
will succeed, but an immediate e2fsck would fail. Store i_size_high
for the journal inode when creating it, and load it upon access.
Use s_jnl_blocks[15] to store the journal i_size_high backup. This
field is currently unused, as EXT2_N_BLOCKS is 15, so it is using
s_jnl_blocks[0..14], and i_size is in s_jnl_blocks[16].
Rename the "size" argument "num_blocks" for the journal creation functions
to clarify this parameter is in units of filesystem blocks and not bytes.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
I ran into odd behavior where mkfs.ext4 of a 16T filesystem would
create a resize inode with 0 reserved blocks, and mark the resize_inode
feature.
A subsequent slight downward resize of the filesystem would remove
the resize inode, making any further offline resizing impossible.
This is especially odd in light of the fact that a large downward
resize (say, to 8T) will actually add blocks to the resize inode -
so a small resize removes it, a large resize expands it ...
commit 8ade268cf2 had added this:
If the filesystem is grown to the point where the resize_inode is no
longer needed, clean it up properly so e2fsck doesn't have to.
but, it seems e2fsck does not care about this situation, either.
So, simply leave the resize_inode intact in this case, and everything
seems to be happy.
Note, this is for the 1.41.xx branch.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Before we go whole-hog on 64-bit e2fsprogs, I wonder if this
is worth considering as a last-minute addition to the 1.41
stream. Currently, mke2fs will shave a block off an exactly-16T
device to fit*, but resize2fs does not do the same, leading
to some asymmetry. This patch fixes that up, and allows 16T
devices to be handled more gracefully in offline resize.
(in fact resize2fs will not even open a 16T device, today).
*commit 37d17a65ec
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Requiring an immediate pre-fsck before printing a minimum
resize size seems a bit draconian; if the fs isn't clean or marked
with error, then certainly, but for an informational minimum
size, I don't think we need to require a fsck since last mount.
I had simply copied the checks from the actual resize path,
previously.
Installers use this option (-P) to gather minimum resize info,
and requiring an actual fsck before use just seems to go too far.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Commit 641b66b fixed a floating point precision error which can result
in a search algorithm looping forever. It can also result in an array
index being out of bounds and causing a segfault. Here are two more
cases in e2fsck and resize2fs that need to be fixed. I've just used
the same fix from the that commit.
Signed-off-by: Lachlan McIlroy <lmcilroy@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Right now, resize2fs -P on a dirty filesystem will give you a number;
however, it's probably wrong if the fs is not clean:
# resize2fs -P myimage.img
resize2fs 1.41.9 (22-Aug-2009)
Estimated minimum size of the filesystem: 75623
# e2fsck -fy myimage.img
e2fsck 1.41.9 (22-Aug-2009)
myimage.img: recovering journal
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
myimage.img: ***** FILE SYSTEM WAS MODIFIED *****
myimage.img: 9530/53760 files (0.1% non-contiguous), 24737/98304 blocks
# resize2fs -P myimage.img
resize2fs 1.41.9 (22-Aug-2009)
Estimated minimum size of the filesystem: 32165
We should issue the same "Please run e2fsck ..." message for
-P as we do for an actual resize request.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Commit 74128f8 added tests for uninit groups, but it could access past
the end of the group_desc[] array after processing the last group:
==19668== Invalid read of size 2
==19668== at 0x40518C: resize_fs (resize2fs.c:1824)
==19668== by 0x405A46: main (main.c:451)
==19668== Address 0x5a0d002 is not stack'd, malloc'd or (recently) free'd
==19668==
==19668== Invalid read of size 2
==19668== at 0x405391: resize_fs (resize2fs.c:1864)
==19668== by 0x405A46: main (main.c:451)
==19668== Address 0x5a0d002 is not stack'd, malloc'd or (recently) free'd
==19668==
It was found by Eric Sandeen running the regression suite through
valgrind.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Resizing a filesystem with an external journal fails when it tries
to read inode 0:
# touch testfs
# truncate testfs 1342177280
# touch testjournal
# truncate testjournal 134217728
# mke2fs -O journal_dev testjournal
# losetup /dev/loop0 testjournal
# mkfs.ext4 -J device=/dev/loop0 testfs 127680
# resize2fs testfs
resize2fs 1.41.9 (22-Aug-2009)
Resizing the filesystem on testfs to 327680 (4k) blocks.
resize2fs: Illegal inode number while trying to resize testfs
Please run 'e2fsck -fy testfs' to fix the filesystem
after the aborted resize operation.
I think the right, simple thing to do is just bail out early
for an external journal here, as there are no backup blocks
to update.
Reported-by: mjevans1983@gmail.com
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
After cleaning up ext2fs_bg_flag_set() and ext2fs_bg_flag_clear(),
we're left with ext2fs_bg_flag_test(). Convert it to
ext2fs_bg_flags_test().
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The ext2fs_bg_flag* functions were confusing.
Currently we have this:
void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group,__u16 bg_flags);
(_set (unused) sets exactly bg_flags; _clear clears all and ignores bg_flags)
and these, which can twiddle individual bits in bg_flags:
void ext2fs_bg_flag_set(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
void ext2fs_bg_flag_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
A better interface, after the patch below, is just:
ext2fs_bg_flags_zap(fs, group) /* zeros bg_flags */
ext2fs_bg_flags_set(fs, group, flags) /* adds flags to bg_flags */
ext2fs_bg_flags_clear(fs, group, flags) /* clears flags in bg_flags */
and remove the original ext2fs_bg_flags_set / ext2fs_bg_flags_clear.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit forces the use of the system-provided blkid or uuid header
files if we are using the system-provided blkid or uuid libraries.
This avoids using the in-tree header files with the system libraries.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When flex_bg is on, calculate_minimum_resize_size() should add more meta
blocks for newly added flex_bg.
Addresses-RedHat-Bugzilla: #519131
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When running resize2fs -M, no need to recalculate the minimal fs size.
Signed-off-by: "Peng Tao" <bergwolf@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If the resize operation fails in the middle of the operation, mark the
filesystem as needing to be checked, and tell the user that they
should run e2fsck -fy on the device.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The resize2fs program was freeing the mountpoint information too
early, so garbage was getting printed instead of the correct
information in an error message.
Addresses-Debian-Bug: #535452
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>
This was reported in Fedora, since the livecd creator does
a lot of resizing.
If we've moved the journal blocks during resize (more likely now,
due to the journal being in the middle) the backup blocks in the
superblock don't get updated, and a subsequent e2fsck will find
issues:
e2fsck 1.41.6 (30-May-2009)
Backing up journal inode block information.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/mnt/test/img: ***** FILE SYSTEM WAS MODIFIED *****
/mnt/test/img: 11/16000 files (0.0% non-contiguous), 17789/38400 blocks
This can be shown in a simple test:
# dd if=/dev/zero of=img bs=1 count=0 seek=3000M
# mke2fs -t ext4 -F img
# resize2fs img 150M
# e2fsck -f img
(thanks to the Fedora reporter Mads Kiilerich for the testcase!
https://bugzilla.redhat.com/show_bug.cgi?id=506105#c2)
So, update the backup journal in the superblock before resize2fs exits.
Addresses-RedHat-Bugzilla: #505339
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
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>
Without a force flag, don't allow resize2fs to even start resizing
below what it thinks the minimum safe value is.
This may stop resizes which could otherwise proceed with a bit
of space still left, but seems like a reasonably safe thing to do.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The extra padding added to the minimum size calculations:
/*
* We need to reserve a few extra blocks if extents are
* enabled, in case we need to grow the extent tree. The more
* we shrink the file system, the more space we need.
*/
if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)
blks_needed += (fs->super->s_blocks_count - blks_needed)/500;
can go quite wrong if we've already added up more "blks_needed"
than our current size, and the above subtraction wraps. This can
easily happen for a filesystem which is almost completely full.
In this case, just return the current fs size as the minimum and
be done with it.
With this fix we could probably call calculate_minimum_resize_size()
for each resize2fs invocation and refuse to resize smaller than that?
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Resize2fs will attempt to truncate an image file of a filesystem down
to size for the convenience of the system administrator. If the
truncate operation fails, print a warning message. This also avoids a
gcc warning message.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Due to a fencepost bug, when skipping a block group whose block bitmap
was uninitialized (and hence could not contain any blocks eligible for
relaocation), the block immediately following the block group wasn't
checked as well. If it was in use and required relocation, it
wouldn't get properly relocated, with the result that an inode using
such a block would end up, post resize, with a pointer to a block now
outside the bounds of the filesystem.
This commit fixes this fencepost error.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If we need to shrink the inode table, we need to make sure the inodes
contained in the part of the inode table we are vacating don't get
reused as part of the filesystem shrink operation. This wasn't a
problem with ext3 filesystems, since the inode table was located in
the block group that was going away, so that location was not eligible
for reallocation.
However with ext4 filesystems with flex_bg enabled, it's possible for
a portion of the inode table in the last flex_bg group to be
deallocated, but in a part of the filesystem which could be used as
data blocks. So we must mark those blocks as reserved to prevent
their reuse, and adjust the minimum filesystem size calculation to
assure that we don't shrink a filesystem too small for the resize
operation to succeed.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When allocating a new set of block group metadata as part of growing
the filesystem, the resize2fs code assumes that the bitmap and inode
table blocks are in their own block group; an assumption which is
changed by the flex_bg feature. This commit works around the problem
by temporarily turning off flex_bg while allocating the new block
group metadata, to avoid potentially overwriting previously allocated
data blocks.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Some extra blocks may be needed to expand some extent allocation trees
while we are shrinking the filesystem. We don't know exactly how
much, so we use a hueristic.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Previously resize2fs assumed that bitmap and inode table blocks were
always located in their respective block group. However, this is no
longer true with flex_bg. So it is necessary to check all of the
block groups which will be truncated to see if they have metadata
blocks that need to be marked as no longer being in use in the new,
shrunk filesystem.
This bug fixes resize2fs -M, which would otherwise fail because
without the released blocks, there would not be enough space in the
filesystem. This bug also avoids (mostly harmless) filesystem
corruptions reported by e2fsck regarding blocks marked in use but not
actually used (these being the bitmap and inode table blocks
associated with the truncated block groups).
Note: in theory it is possible to have block group N utilize bitmap
and inode table blocks in block group N+X with flex_bg. At the moment
neither mke2fs nor e2fsck will create filesystems like this, which is
good, because resize2fs doesn't handle this case correctly.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In the function blocks_to_move(), when checking to see if a block
group's block bitmap is initialized, we need to check the old_fs's
block group descriptors, not the new file system's (already truncated)
group descriptor data structures. Otherwise we will end up
derferencing past the end of the array boundary, and the resulting
garbage value may indicate that the bitmap is uninitialized, and so
all of the blocks in that block group will be skipped, resulting in
some blocks not getting marked as needing relocation.
This showed up in the following test case:
mke2fs -t ext4 -b 1024 test.img 1048576
resize2fs test.img 80000
The journal inode after the resize operation looked like this:
debugfs: stat <8>
Inode: 8 Type: regular Mode: 0600 Flags: 0x80000
...
BLOCKS:
(IND):35385, (0-5836):2356-8192, (5837-21959):8454-24576, (21960-32506):24838-35
384, (32507-32767):434177-434437
TOTAL: 32769
The blocks 434177-434437 were not moved because block group 53 was
wrongly thought to have an unitialized block group.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Some of these could affect filesystems between 2^31 and 2^32-1 blocks.
Thanks to Valerie Aurora Henson for pointing out the problems in
lib/ext2fs/alloc_tables.c, which led me to do a "make gcc-wall" scan
over the source tree.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If we don't check for new_size == 0, bogus values send resize2fs into
a tailspin:
resize2fs 1.41.0 (10-Jul-2008)
Illegal block number passed to ext2fs_test_block_bitmap #1 for block bitmap for
/tmp/tmp.lntZtMFvz8/fake-disk
...the same message repeated zillion times...
Probably should see where that loop is, but at any rate we should
error-check parse_num_blocks.
Thanks to Petr Muller for reporting this.
Addresses-Red-Hat-Bugzilla: #465984
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Check the return value of ext2fs_get_mem, since prog isn't initialized
so checking may miss a failed memory allocation.
Signed-off-by: Manish Katiyar <mkatiyar@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In order to make it possible for the test_io manager to be compiled in
by default, make all of the programs that might try to use it to only
do so if the environment variables TEST_IO_FLAGS and TEST_IO_DEBUG are
set.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The current method of adding one block group at a time to a mounted
filesystem means it is impossible to accomodate the flex_bg allocation
method of placing the metadata together in a single block group. For
now we "fix" this issue by using the traditional layout for new block
groups, where each block group is self-contained and contains its own
bitmap blocks and inode tables. This means we don't get the layout
advantages of flex_bg in the new block groups, but at least it allows
on-line resizing to function.
Long term, we will need to create a new ioctl which does much more of
the resizing work in the kernel.
We also fix a bug in the ext3/ext4 ioctl fallback code so we stop
trying the ext3 ioctl for every single block group when resizing an
ext4 filesystem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This fixes a cosemtic issue where we don't complete the progress bar
and issue a newline before printing the final resize successful
message.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In the rare case where new blocks are needed while mutating an extent
tree, supply a specialized block allocator so that extent_node_split()
allocates valid blocks for the interior nodes of the extent tree.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the filesystem has the uninit_bg feature, then parts of the block
and inode bitmap may not be initialized. Teach resize2fs how to deal
with these case appropriately. (Most of these fixes were fortunately
not necessary for the common case where the resize_inode is present to
reserve space, and where the filesystem is being expanded instead of
being shrunk.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When moving directories into new block groups (which would only happen
when shrinking a filesystem), resize2fs would increase the directory
in-use count by 2 times the necessary value, due to a change in
ext2fs_inode_alloc_stats() made in e2fsprogs 1.26. This is largely
harmless, but it does result in a filesystem corruption for e2fsck to
fix.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
These were caused by multi-line strings missing a space at the line
break. Thanks to translator Phillipp Thomas for noticing these typo's.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the filesystem is grown to the point where the resize_inode is no
longer needed, clean it up properly so e2fsck doesn't have to.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When calculating the number reserved blocks, use floating point for
better accuracy, since for big filesystems it really makes a
difference. In addition, mke2fs and tune2fs accepts a floating point
number from the user, so they should provide that level of accuracy.
Addresses-Debian-Bug: #452639
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Allow the old name of uninit_groups when converting feature names for
backwards compatibility for scripts running mke2fs and tune2fs.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add the -P option to print the minimum filesystem size and exit.
Add the -M option to force resizing the filesystem to the minimum
filesystem size.
Signed-off-by: Josef Back <jbacik@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Use ext2fs_get_next_inode_full() in resize2fs and clean up large inode
handling; previous attempt was not properly handling all cases, and
was incorrectly setting i_extra_isize. This caused some extended
attributes to get removed or randomly assigned to other inodes as a
result of the resize, which can be unfortunate on systems using
SELinux.
The previous commit didn't fix things completely on big-endian systems
like PowerPC.
Addresses-Red-Hat-Bugzilla: #434893
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
inode_scan_and_fix() in resize2fs needs to do read/write of the full
inode to be sure it gets all data from larger (>128 byte) inodes.
Addresses-Red-Hat-Bugzilla: #434893
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Apparently Mac OS 10.5 defines fstat64(), but not ftruncate64(),
causing resize2fs to fail to build. So check explicitly for
ftruncate64(), and fall back to ftruncate() if necessary.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If we can't use ftruncate64(), and have to use ftruncate() instead,
make sure that we don't accidentally truncate the size when we chop it
down to an off_t before calling ftruncate(), lest we severely damage a
filesystem image file.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add some additional checks, primarily in resize2fs and in the rarely
used (and soon to-be-deprecated) e2fsck byte-swap filesystem function.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add macros to support variable-length group descriptors for ext4.
Signed-off-by: Valerie Clement <valerie.clement@bull.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This patch changes ext2fs_open() to set EXT2_FLAG_MASTER_SB_ONLY by
default. This avoids some problems in e2fsck (reported by Jim Garlick)
where a corrupt journal can end up writing the bad superblock to the
backups. In general, only e2fsck (after the filesystem is clean),
tune2fs, and resize2fs should change the backup superblocks by default.
Most callers of ext2fs_open() should not be touching anything where the
backups should be touched. So let's change the defaults to avoid
potential problems.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Store the RAID stride value when a filesystem is created with a requested
RAID stride, and then use it automatically in resize2fs.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Found 2 of the three places where a return code for ext2fs_write_inode() was
not being checked.
The second fix in e2fsck/emptydir.c is basically just to shut coverity up even
though it really is unnecessary.
Coverity ID: 1: Checked Return
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change all of the e2fsprogs programs to use the newer add_error_table()
and remove_error_table() interfaces instead of the much older
initialize_*_error_table() function.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Check to make sure the filesystem has a resize inode if it is needed to
grow the filesystem. Print the correct error message if the kernel
returns an ENOTTY error to the group extend ioctl
Addresses Debian Bug: #380548
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
There were still some %d's lurking when we print blocks & inodes; also
many of the counters in the e2fsck_struct were signed, and probably
need to be unsigned to avoid overflows.
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
Add a new functiom, e2p_percent(), which correct calculates the percentage
of a number based on a given percentage, without worrying about overflow
issues. This is used where we calculate the number of reserved blocks using
a percentage of the total number of blocks in a filesystem.
Based on patches from Eric Sandeen, but generalized to use this new function.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
For loops such as:
for (i=1; i <= fs->super->s_blocks_count; i++) {
<do_stuff>
}
if i is an int and s_blocks_count is (2^32-1), the condition is never false.
Change these loops to:
for (i=1; i <= fs->super->s_blocks_count && i > 0; i++) {
<do_stuff>
}
to stop the loop when we overflow i
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add a new function, ext2fs_div_ceil(), which correctly calculates a division
of two unsigned integer where the result is always rounded up the next
largest integer. This is used everywhere where we might have
previously caused an overflow when the number of blocks
or inodes is too close to 2**32-1.
Based on patches from Eric Sandeen, but generalized to use this new function
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
Resize2fs will now automatically determine the RAID stride parameter that
had been used to create the filesystem, and use that for newly created
block groups. The RAID stride parameter may also be manually specified
on the command line using the new -S option to resize2fs.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the format string(%d, %ld) for a block number and inode number
to %u or %lu.
Signed-off-by: Takashi Sato <sho@tnes.nec.co.jp>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the filesystem is mounted, open it in read-only mode since the userspace
program should not try to modify it directly. If the filesystem is not mounted,
open it in exclusive mode to avoid potential problems (such as someone
trying to mount the filesystem while it is being resized).
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
There was a off-by-one fencepost error in the logic used to check if
we avoid copying zero-filled blocks when moving an inode table down by
a block or two. Thanks to valgrind for catching it. As far as I know
this fencepost error wasn't causing any actual problems, but it was
definitely a bug.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
correctly.
Update Makefile dependencies.
Update "make depend" production so that it filters out comments
inserted by newer gcc compilers.
Remove sync from e2fsck's "make all" target.
example, /tmp/test.img?offset=1024. Multiple options can separated using
the & character, although at the moment the only option implemented is
the offset option in the unix_io layer.
some generated files, by having subst update the modtime on these
files even when the generated file hasn't changed. We do this with
generated files that do not have any downstream dependencies.
Theodore Ts'o