mirror of https://github.com/vitalif/e2fsprogs
388 lines
16 KiB
Plaintext
388 lines
16 KiB
Plaintext
E2fsprogs 1.07 (March 9, 1997)
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==============================
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E2fsck is now uses much less memory when checking really large
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filesystems (or rather, filesystems with a large number of inodes).
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Previously a filesystem with 1 million inodes required 4 megabytes of
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memory to store inode count statistics; that storage requirement has
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now been reduced to roughly half a megabyte.
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E2fsck can now properly deal with bad blocks appearing inside the
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inode table. Instead of trying to relocate the inode table (which
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often failed because there wasn't enough space), the inodes in the bad
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block are marked as in use.
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E2fsck will automatically try to use the backup superblocks if the
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primary superblocks have a bad magic number or have missing meta-data
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blocks (or meta-data blocks which are out of range).
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E2fsck's pass 3 has been made more efficient; most noticeable on
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filesystems with a very large number of directories.
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Completely revamped e2fsck's system of printing problem reports. It
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is now table driven, to make them more easily customizeable and
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extendable. Error messages which can be printed out during preen mode
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are now one line long.
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Fixed e2fsck's filesystem swapping code so that it won't try to swap
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fast symbolic links or deleted files.
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Fixed e2fsck core dumping when fixing a filesystem which has no
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directories (not even a root directory).
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Added a check to e2fsck to make sure that the length of every
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directory entry is a multiple of 4 (since the kernel complains if it
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isn't).
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Added a check to e2fsck to make sure that a directory entry isn't a
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link to the root directory, since that isn't allowed.
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Added a check to e2fsk to now make sure the '.' and '..' directory
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entries are null terminated, since the 2.0 kernel requires it.
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Added check to write_bitmaps() to make sure the superblock doesn't get
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trashed if the inode or block bitmap is marked as being block zero.
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Added checking of the new feature set fields in the superblock, to
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avoid dealing with new filesystem features that this package wasn't
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set up to handle.
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Fixed a fencepost error in ext2fs_new_block() which would occasionally
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try to allocate a block beyond the end of a filesystem.
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When the UUID library picks a random IEEE 802 address (because it
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can't find one from a network card), it sets the multicast bit, to
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avoid conflicting with a legitimate IEEE 802 address.
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Mke2fs now sets the root directory's owner to be the real uid of the
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user running mke2fs. If the real uid is non-zero, it also sets
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the group ownership of the root directory to be the real group-id of
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the user running mke2fs.
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Mke2fs now has more intelligent error checking when it is given a
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non-existent device.
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When badblocks is given the -vv option, it now updates the block that
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it is currently testing on every block.
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Fixed a bug in fsck where it wouldn't modify the PATH envirnoment
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currently correctly if PATH wasn't already set.
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Shared libraries now built with dependencies. This allows the shared
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library files to be used with dlopen(); it also makes the transition
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to libc 6 easier, since ld.so can tell which libc a particular shared
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library expects to use.
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Programmer's notes:
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-------------------
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Added new abstraction (defined in dblist.c) for maintaining a list of
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blocks which belongs to directories. This is used in e2fsck and other
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programs which need to iterate over all directories.
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Added new functions which test to see if a contiguous range of blocks
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(or inodes) are available. (ext2fs_*_bitmap_range).
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Added new function (ext2_inode_has_valid_blocks) which returns true if
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an inode has valid blocks. (moved from e2fsck code).
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Added new function (ext2fs_allocate_tables) which allocates the
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meta-data blocks as part of initializing a filesystem. (moved from
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mke2fs code).
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Added a new I/O manager for testing purposes. It will either allow a
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program to intercept I/O requests, or print debugging messages to
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trace the activity of a program using the I/O manager.
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The badblocks_list functions now store the bad blocks in a sorted
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order, and use a binary search to speed up badblocks_list_test.
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The inode scan function ext2fs_get_next_inode() may now return a soft
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error returns: MISSING_INODE_TABLE and BAD_BLOCK_IN_INODE_TABLE in
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those cases where part of an inode table is missing or there is a bad
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block in the inode table.
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Added a new function (ext2fs_block_iterate2) which adds new arguments to
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the callback function to return a pointer (block and offset) to the
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reference of the block.
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Added new function (ext2fs_inode_scan_goto_blockgroup) which allows an
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application to jump to a particular block group while doing an inode
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scan.
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The badblocks list functions were renamed from badblocks_* to
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ext2fs_badblocks_*. Backwards compatibility functions are available
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for now, but programs should be modified to use the new interface.
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Some of the library functions were reorganized into separate files to
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reduce the size of some programs which statically link against the
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ext2 library.
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Put in some miscellaneous fixes for the Alpha platform.
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E2fsprogs 1.06 (October 7, 1996)
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================================
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Fixed serious bug in e2fsck: if the block descriptors are bad, don't
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smash the backup copies in ext2fs_close(). (The problem was that when
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e2fsck -p discovered the problem, while it was closing the filesystem
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and exiting, it was also blowing away the backup superblocks on the
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disk, which was less than friendly.) We now make it the case that we
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only write out the backup superblock and the back block descriptors if
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the filesystem is completely free from problems.
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Fixed a bug in block_interate in the lib/ext2fs library which caused
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e2fsck to fail on GNU Hurd-created filesystems.
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Add support for Linux/FT's bootloader, which actually uses
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EXT2_BOOT_LOADER, and sets its mode bits which caused e2fsck to want
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to clear the inode.
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Add support for the "A" (no atime update) attribute. (Note: this
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attribute is not yet in production kernels.)
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The test suite is not automatically run when doing a "make all" from
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the top level directory. Users should manually run "make check" if
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they wish to run the test suite.
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Upon a preenhalt(), make the printed message more explicit that
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running e2fsck "MANAULLY" means without the -p or -a options.
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In e2fsck, if a disconnected inode is zero-length, offer to clear it
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instead of offering to connect it to lost+found.
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In e2fsck, if a filesystem was just unmounted uncleanly, and needs
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e2fsck to be run over it, change e2fsck to explicitly display this
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fact.
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For dumpe2fs and e2fsck, cause the -V option to print out which
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version of the ext2fs library is actually getting used. (This will
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help detect mismatches of using a 1.06 utility with a 1.05 library,
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etc.)
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Programmers' notes:
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-------------------
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EXT2_SWAP_BYTES was changed to EXT2_FLAG_SWAP_BYTES, which better fits
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the naming convention.
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In ext2fs_initialize(), make sure the description for the inode bitmap
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is correctly initialize.
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Fixed minor type typo in ext2fs_allocate_generic_bitmap();
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E2fsprogs 1.05 (September 7, 1996)
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==================================
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Add support for new fields in the ext2 superblock --- volume name,
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volume UUID, and last mounted field. Dumpe2fs displays these fields,
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tune2fs and mke2fs allows you to set them. E2fsck will automatically
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generate a UUID for those volumes that don't have them.
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Put in support for e2fsck to recognize HURD specific ext2 features ---
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most notably, the translator block. The e2fsprogs tools will now use
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the creator_os field in the superblock to correctly handle different
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OS-specific variants of the ext2 filesystem.
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E2fsck now fixes inodes which have a the deletion time set, but which
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have a non-zero i_link_count field by offering to clear the deletion
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time. Previously e2fsck assumed that the inode was deleted (per 0.3c
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ext2 kernel behavior) and offered to unlink the file.
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If e2fsck sets the clean bit, but nothing else, set the exit code
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FSCK_NONDESTRUCT. After all, e2fsck did fix a filesystem error --- it
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set the filesystem valid bit when it was previously cleared. :-) This
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was needed to make the HURD fsck driver happy.
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If the user refuses to attach an unattached inode, e2fsck will no
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longer set the inode's link count. Otherwise, the inode would end up
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getting marked as unused, which might cause loss of data later.
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Make the message issued by e2fsck when the superblock is corrupt less
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confusing for users. It now mentions that another reason for the
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"corrupt superblock" message might be that the partition might not be
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an ext2 filesystem at all (it might swap, msdos filesystem, ufs, etc.)
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Make the libext2 library more robuest so that e2fsck won't coredump on
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an illegal superblock where the blocksize is zero. (f_crashdisk is
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the test case).
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By default, create filesystems where the default checkinterval is 6
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months (180 days). Linux servers can be robust enough that 20 reboots
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can be a long, long time.
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Added configure flag --enable-old-bitops, which forces the bitops to
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use the old (native) bitmask operations. By default on the sparc
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platform, the standard ext2 bit ordering is now used.
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Added a new feature to e2fsck to byte-swap filesystems; this can be
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used to convert old m68k filesystems to use the standard byte-order
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storage for the superblock, inodes, and directory blocks. This
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function is invoked by using the '-s' option to e2fsck.
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Debugfs's "dump" command has been enhanced so that it writes out the
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exact size of the file so that the nulls at the end of the file are
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eliminated. The command also accept a new "-p" option which will
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attempt preserve to preserve the ownernship, permissions, and
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file modification/access times.
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Debugfs has two new options, -f and -R. The -R option allows the user
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to execute a single debugfs command from the command line. The -f
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option allows the user to specify a "command file" containing debugfs
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commands which will get executed.
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Dumpe2fs now pretty prints the check interval, instead of just
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printing the check interval as a number of seconds.
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Fix bugs in debugfs: the params command when no filesystem is opened
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no longer causes a core dump. It is now possible to unlink a file
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when a pathame containing a '/' is specified.
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Tune2fs has a new -C option which sets the number of times the
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filesystem has been mounted.
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Fix the chattr '-v' option so that it actually works. Chattr was
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being buggy about the -v option parsing.
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Programmers' notes:
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-------------------
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The directory lib/uuid contains a set of library routines to generate
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DCE compatible UUIDs.
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Extended ext2fs_namei() to handle symbolic links. Added new function
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ext2fs_nami_follow() which will follow last symbolic link in the case
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where the pathname points to a sym link.
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The ext2fs_block_iterate function will now return the HURD translator
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block, if present. The new flag BLOCK_FLAG_DATA_ONLY will cause the
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iterator to return data blocks only. The ext2fs.h file now defines
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constants BLOCK_COUNT_IND, BLOCK_COUNT_DIND, BLOCK_COUNT_TIND, and
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BLOCK_COUNT_TRANSLATOR, which are the magic values passed in the block
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count field of the iterator callback function.
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The test script driver now takes an optional second argument, which is
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the test case to be run. This allows you to run a test case without
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needing to run the entire test suite.
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On Linux ELF systems, install the .so files in the correct places
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(/usr/lib). The .so files must be stored in the same directory as the
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.a files.
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Fixed miscellaneous HURD compilation issues with header file being
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included in the right order.
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Fixed debugfs so that it resets optind to zero, not one, since setting
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optind to zero is more correct.
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E2fsprogs 1.04 (May 16, 1996)
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=============================
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First "official" (1.03 was a limited release only) to support building
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e2fsprogs under Linux 2.0 kernels (as well as late model 1.3 and 1.99
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kernels).
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This package includes a RPM specs file, that it can be built using the
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RedHat Package Manager.
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E2fsck now prints a hint that if there are lots of incorrectly located
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inode bitmaps, block bitmaps, and inode table blocks, the user might
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want to try using e2fsck -b 8193 first, to see if that fares any
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better.
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For ext2 filesystem written with the hurd, debugfs will now print out
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the translator field when printing an inode structure.
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Lots of miscellaneous linking/installation cleanups:
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Libraries are now linked using a relative pathname, instead of
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relying on -L working correct. It doesn't, in many cases, including
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current versions of GNU ld. This guarantees that the build tree is
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linking with the right libraries, instead of the ones installed in
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/usr/lib.
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Header files, man pages, and the et/ss shell scripts are now
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generated using a custom substitution script, instead of relying on
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the configure script. This prevents needless recompilation of
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files; in addition, the custom substitution script is much faster.
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e2fsck may now be linked dynamically, by using the
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--enable-dynamic-e2fsck flag to configure. This is not recommended,
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since it increases e2fsck's dependence on other files, but some
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people need to save disk space, and other critical programs on their
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systems were being linked dynamically anyway.
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Programs such as fsck which didn't need to be linked against
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libext2fs (or mke2fs which didn't need to be linked against libe2p)
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only link against libraries they actually need. Otherwise, those
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programs would require the presense of libraries that otherwise
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could be removed from a rescuse diskette.
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The ss include files are now installed correctly so they can
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actually be used by another package.
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If the profiling libraries are built, they are now installed on a
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"make install-libs".
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E2fsprogs 1.03 (March 27, 1996)
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===============================
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Change the m68k bit numbering for bitmasks to match the bit numbering
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used by all other ext2 implementations. (This change was requested by
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the m68k kernel development team.)
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Support (in-development) filesystem format revision which supports
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(among other things) dynamically sized inodes.
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Fixed a bug in the ext2 library so that an intelligent error is
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returned if mke2fs is run with a ridiculously small number of blocks
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for a partition.
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Fixed a bug in the ext2 library which required that the device be
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openable in read/write mode in order to determine its size. This
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caused e2fsck -n to require read/write access when it was not
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previously necessary.
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Fixed a bug in e2fsck which casued it to occasionally fail the test
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suite depending on which version of the floating point library it was
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using.
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Fixed a bug in e2fsck so that it now halts with a fatal error when
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certain superblock consistency checks fail. Previously it continued
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running e2fsck, with some potential confusing/damaging consequences.
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Added new flag to fsck which allows the root to be checked in parallel
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with other filesytems. This is not the safest thing in the world to
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do, but some system administrators really wanted it.
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Fixed -Wall flames in lib/ss.
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E2fsprogs 1.02 (January 16, 1996)
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=================================
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Fix to allow e2fsprogs to be compiled on recent 1.3 (pl45+) kernels.
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Change e2fsck to print statistics of how many non-contiguous files are
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on the system. Note that a file which is larger than 8k blocks, it is
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guaranteed to be non-contiguous.
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In mke2fs, print a warning message if a user tries to format a whole
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disk (/dev/hda versus /dev/hda1). If a user really wants to format a
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whole disk, the -F (force) option forces mke2fs to format a whole disk
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as a filesytem.
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Fix a bug in fsck where in some cases it might start checking
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partitions in the next pass before it finishes checking partitions in
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the current pass. This still won't cause two partitions on the same
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disk will be checked, so it's rarely a problem in real life.
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Patch lsattr so that it won't hang when checking a named pipe.
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Minor compilation fixes:
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* Fix the order of libraries that were linked in debugfs.
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* Allow the sources to be compiled with -ansi turned on.
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