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Author SHA1 Message Date
Theodore Ts'o bb1158b92e mke2fs: account for physical as well as logical sector size 
Some devices, notably 4k sector drives, may have a 512 logical
sector size, mapped onto a 4k physical sector size.

When mke2fs is ratcheting down the blocksize for small filesystems,
or when a blocksize is specified on the commandline, we should not
willingly go below the physical sector size of the device.

When a blocksize is specified, we -must- not go below
the logical sector size of the device.

Add a new library function, ext2fs_get_device_phys_sectsize()
to get the physical sector size if possible, and adjust the
logic in mke2fs to enforce the above rules.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2010-05-17 23:04:40 -04:00
Theodore Ts'o 543547a52a libe2p, libext2fs: Update file copyright permission states to match COPYING 
The top-level COPYING file states that the e2p and ext2fs libraries
are available under the LGPLv2.  The files were incorrectly labelled.
Alex Thomas/Luster has been consulted wrt to the ext3_extents.h file;
the rest of the files were primarily authored by Theodore Ts'o.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2010-05-17 23:04:39 -04:00
Theodore Ts'o efc6f628e1 Remove trailing whitespace for the entire source tree 
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2008-08-27 23:07:54 -04:00
Theodore Ts'o e37fbf1c19 getsectsize.c (BLKSSZGET): Clean up test for when to manually 
define the BLKSSZGET ioctl.
 2005-06-19 23:11:09 -04:00
Theodore Ts'o 93d5c38791 mke2fs.c (PRS, set_fs_defaults): If the sector size of the 
device is larger than the default block size, then use the
	sector size of the device as the default block size.

getsectsize.c (ext2fs_get_device_sectsize): New function which
   	returns the hardware sector size (if it is available).
 2003-05-21 17:28:29 -04:00