*nix File System Choices? Post: 302209401

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LEARN ABOUT SUSE

resize2fs

RESIZE2FS(8)						      System Manager's Manual						      RESIZE2FS(8)

NAME

       resize2fs - ext2/ext3/ext4 file system resizer

SYNOPSIS

       resize2fs [ -fFpPM ] [ -d debug-flags ] [ -S RAID-stride ] device [ size ]

DESCRIPTION

       The  resize2fs  program will resize ext2, ext3, or ext4 file systems.  It can be used to enlarge or shrink an unmounted file system located
       on device.  If the filesystem is mounted, it can be used to expand the size of the mounted filesystem, assuming the kernel supports on-line
       resizing.  (As of this writing, the Linux 2.6 kernel supports on-line resize for filesystems mounted using ext3 only.).

       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 gigabytes, 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 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
       or using lvextend(8), if you're using the logical volume manager lvm(8).  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:
		   2	- Debug block relocations
		   4	- Debug inode relocations
		   8	- Debug moving the inode table

       -f     Forces resize2fs to proceed with the filesystem resize operation, 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.

       -M     Shrink the filesystem to the minimum size.

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

       -P     Print the minimum size of the filesystem and exit.

       -S RAID-stride
	      The  resize2fs program will heuristically determine the RAID stride that was specified when the filesystem was created.  This option
	      allows the user to explicitly specify a RAID stride setting to be used by resize2fs instead.

KNOWN BUGS

       The minimum size of the filesystem as estimated by resize2fs may be incorrect, especially for filesystems with 1k and 2k blocksizes.

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.

SEE ALSO

       fdisk(8), e2fsck(8), mke2fs(8), lvm(8), lvextend(8)

E2fsprogs version 1.41.11					    March 2010							      RESIZE2FS(8)