When an extent-mapped directory is compacted by "e2fsck -fD" and
frees enough leaf blocks that it loses an extent tree index block,
the old e2fsck_rehash_dir->ext2fs_block_iterate3->write_dir_block()
code would not free the extent block, which would result in the
extent tree becoming corrupted when it is written out.
Pass 1: Checking inodes, blocks, and sizes
Inode 17825800, end of extent exceeds allowed value
(logical block 710, physical block 570459684, len 1019)
This results in loss of a whole index block of directory leaf blocks
and maybe thousands or millions of files in lost+found.
Fix e2fsck_rehash_dir() to call ext2fs_punch() to free the blocks
at the end of the directory instead of trying to handle this itself
while writing out the directory. That properly handles all of the
cases of updating the extent tree as well as accounting for blocks
that are released (both leaf blocks and index blocks).
Add a test case for compacting the directory to be smaller than the
index block that originally caused the corruption.
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Change the e2fsck/mke2fs/tune2fs/e2image/debugfs regression tests to
be driven by Makefile rules instead of by a script loop. This allows
the tests to be run in parallel like a build and reduces testing time
significantly.
One major change to the tests themselves is to printing the test name,
description, and status together after the test has passed or failed,
to avoid mixing lines from the tests. The other major change is to
use unique temporary filenames for each test, which was mostly handled
already via b4db1e4c74, but in some
cases temporary files are changed to use $test_name.tmp to avoid any
collision between running tests.
On my old 2-CPU system it reduced the testing time from 160s to 40s.
Much of the savings is from the MMP test delays running in parallel.
It still takes the time of the slowest test, f_mmp_garbage, though
there will be ongoing benefit in the future as more tests are added
since the wallclock time will not increase linearly for each test.
Tests were run with various combinations of "make -j", and "make -j2"
through "make -j44" repeatedly without any test failures.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Non-expert users get confused when they see messages like this:
Illegal block #-1 (2291965952) in inode 176. CLEARED.
So change it to be something a little bit more understandable:
Illegal indirect block (2291965952) in inode 176. CLEARED.
Addresses-SourceForge-Bug: #2871782
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the directory is packed with no slack space, as soon as any new
directory entries are added, leaf nodes end up getting split and
directory ends up getting very inefficient.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fix error message to print the depth of a corrupt htree directory.
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Kalpak Shah <kalpak.shah@sun.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Change the prompt so it is clear to the user that e2fsck will be
clearing the htree information, not the directory inode itself, when
the htree information has proven to be corrupt.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The e2fsprogs and kernel implementation of directory hash tree has a
bug which causes the implementation to be dependent on whether
characters are signed or unsigned. Platforms such as the PowerPC,
Arm, and S/390 have signed characters by default, which means that
hash directories on those systems are incompatible with hash
directories on other systems, such as the x86.
To fix this we add a new flags field to the superblock, and define two
new bits in that field to indicate whether or not the directory should
be signed or unsigned. If the bits are not set, e2fsck and fixed
kernels will set them to the signed/unsigned value of the currently
running platform, and then respect those bits when calculating the
directory hash. This allows compatibility with current filesystems,
as well as allowing cross-architectural compatibility.
Addresses Debian Bug: #389772
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
easier to understand (sorry, translators).
Add new @m (multiply-claimed) and @n (invalid) expansions for e2fsck
problem descriptions.
Add Dutch translation, and update French translation.
Add an explanation of how the @-expansion and %-exapansion works in
e2fsck/problem.c to make life easier for the translators.
Synchronize and update po files.
Add additional checks to HTREE directories. We now check the count
and limit fields in the htree header, as well as assuring that the
hash table in each interior node is in ascending order. We also
check to make sure all leaf nodes are have the expected depth in
the tree.
Updated test cases to deal with all of the above.
Andreas Dilger