resize2fs


RESIZE2FS(8)                                                      RESIZE2FS(8)

NAME

       resize2fs - ext2/ext3 file system resizer

SYNOPSIS

       resize2fs [ -d debug-flags ] [ -f ] [ -F ] [ -p ] device [ size ]

DESCRIPTION

The resize2fs program will resize ext2 file systems. It can be used to
enlarge or shrink an ext2 file system located on device. The size
parameter specifies the requested new size of the filesystem. If no
units are specified, the units of the size parameter shall be the
filesystem blocksize of the filesystem. Optionally, the size parameter
may be suffixed by one of the following the units designators: ’s’,
’K’, ’M’, or ’G’, for 512 byte sectors, kilobytes, megabytes, or giga-
bytes, respectively. The size of the filesystem may never be larger
than the size of the partition. If size parameter is not specified, it
will default to the size of the partition.

The resize2fs program does not manipulate the size of partitions. If
you wish to enlarge a filesystem, you must first make sure you can
expand the size of the underlying partition first. This can be done
using fdisk(8) by deleting the partition and recreating it with a
larger size. When recreating the partition, make sure you create it
with the same starting disk cylinder as before! Otherwise, the resize
operation will certainly not work, and you may lose your entire
filesystem. After running fdisk(8), run resize2fs to resize the ext2
filesystem to use all of the space in the newly enlarged partition.

If you wish to shrink an ext2 partition, first use resize2fs to shrink
the size of filesystem. Then you may use fdisk(8) to shrink the size
of the partition. When shrinking the size of the partition, make sure
you do not make it smaller than the new size of the ext2 filesystem!

OPTIONS

       -d debug-flags
              Turns on various resize2fs debugging features, if they have been
              compiled into the binary.  debug-flags  should  be  computed  by
              adding  the  numbers  of the desired features from the following
              list:
                   1    - Print out all disk I/O
                   2    - Debug block relocations
                   8    - Debug inode relocations
                   16   - Debug moving the inode table

       -p     Prints out a percentage completion bars for each resize2fs oper-
              ation,  so  that  the user can keep track of what the program is
              doing.

       -f     Forces resize2fs to proceed with the  filesystem  resize  opera-
              tion,  overriding  some  safety  checks which resize2fs normally
              enforces.

       -F     Flush the filesystem device’s buffer  caches  before  beginning.
              Only really useful for doing resize2fs time trials.

AUTHOR

       resize2fs was written by Theodore Ts’o <tytso@mit.edu>.

COPYRIGHT

       Resize2fs  is Copyright 1998 by Theodore Ts’o and PowerQuest, Inc.  All
       rights reserved.  As of April,  2000  Resize2fs  may  be  redistributed
       under the terms of the GPL.