mirror of https://github.com/vitalif/e2fsprogs
![]() In practice, it is **extremely** rare for users to try to use more than the first backup superblock located at the beginning of block group #1. (i.e., at block number 32768 for file systems with a 4k block size). This new compat feature restricts the backup superblock to block group #1 and the last block group in the file system. Aside from reducing the overhead of the file system by a small number of blocks, by eliminating the rest of the backup superblocks, it allows us to have a much more flexible metadata layout. For example, we can force all of the allocation bitmaps and inode table blocks to the beginning of the disk, which allows most of the disk to be exclusively used for contiguous data blocks. This simplifies taking advantage of certain HDD specific features, such as Shingled Magnetic Recording (aka Shingled Drives), and the TCG's OPAL Storage Specification where having a simple mapping between LBA block ranges and the data blocks used by the file system can make life much simpler. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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config | ||
contrib | ||
debian | ||
debugfs | ||
doc | ||
e2fsck | ||
ext2ed | ||
include/nonunix | ||
install-utils | ||
intl | ||
lib | ||
misc | ||
po | ||
resize | ||
tests | ||
util | ||
.gitignore | ||
.hgignore | ||
.missing-copyright | ||
.release-checklist | ||
ABOUT-NLS | ||
COPYING | ||
INSTALL | ||
INSTALL.elfbin | ||
MCONFIG.in | ||
Makefile.in | ||
README | ||
README.subset | ||
RELEASE-NOTES | ||
SHLIBS | ||
SUBMITTING-PATCHES | ||
TODO | ||
aclocal.m4 | ||
configure | ||
configure.in | ||
depfix.sed | ||
e2fsprogs.lsm | ||
e2fsprogs.spec.in | ||
version.h | ||
wordwrap.pl |
README
This is the new version (1.42.9) of the second extended file system management programs. From time to time, I release new versions of e2fsprogs, to fix bugs and to make the utilities more robust. You can always find information about the latest version at the the e2fsprogs web page, which is: http://e2fsprogs.sourceforge.net The INSTALL file has instructions on building and installing e2fsprogs. Provisions for building Red Hat RPMs and Debian dpkg files are supplied as well. In case of bugs in these programs, please contact Ted Ts'o at tytso@mit.edu or tytso@alum.mit.edu. See the e2fsck man page for suggestions of what sort of information to include when submitting bug reports for these programs.