resize_reiserfs

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

NAME
       resize_reiserfs - resizer tool for the ReiserFS filesystem

SYNOPSIS
       resize_reiserfs [ -s [+|-]size[K|M|G] ] [ -j dev ] [ -fqv ] device

DESCRIPTION
       The resize_reiserfs tool resizes an unmounted reiserfs file system.  It
       enlarges or shrinks an reiserfs file system located on a device so that
       it  will have size bytes or size=old_size +(-) size bytes if the + or -
       prefix is used.  If the -s option is not specified, the filesystem will
       be  resized  to fill the given device.  The size parameter may have one
       of the optional modifiers K, M, G, which means the  size  parameter  is
       given in kilo-, mega-, gigabytes respectively.

       The resize_reiserfs program does not manipulate the size of the device.
       If you wish to enlarge a filesystem, you must make sure you expand  the
       underlying  device  first.  This can be done using cfdisk(8) for parti-
       tions, by deleting the partition and recreating it with a  larger  size
       (assuming  there  is free space after the partition in question).  Make
       sure you re-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.

       The resize_reiserfs program allows to grow a reiserfs on-line if  there
       is a free space on block device.

       If  you  wish to shrink a reiserfs partition, first use resize_reiserfs
       to shrink the file system. You may then use cfdisk(8) to shrink the de-
       vice.  When shrinking the size of the device, make sure you do not make
       it smaller than the reduced size of the reiserfs filesystem.

OPTIONS
       -s [+|-]size
              Set the new size in bytes.

       -j dev Set the journal device name.

       -f     Force, do not perform checks.

       -q     Do not print anything but error messages.

       -v     Turn on extra progress status messages (default).

RETURN VALUES
       0    Resizing successful.

       -1   Resizing not successful.

EXAMPLES
       The following example shows how to test resize_reiserfs.   Suppose  2Gb
       reiserfs  filesystem  is created on the device /dev/hda8 and is mounted
       on /mnt.  For shrinking the device we need to unmount  it  first,  then
       run resize_reiserfs with a size  parameter (in this case -1Gb):

            df
            umount /mnt
            resize_reiserfs -s -1G /dev/hda8
            mount /dev/hda8 /mnt
            df /mnt

AUTHOR
       This   version   of  resize_reiserfs  has  been  written  by  Alexander
       Zarochentcev <zam@namesys.com>.

BUGS
       Please report bugs to the ReiserFS developers <reiserfs-devel@vger.ker-
       nel.org>,  providing  as  much  information as possible--your hardware,
       kernel, patches, settings, all printed messages; check the syslog  file
       for any related information.

SEE ALSO
       cfdisk(8), reiserfsck(8), debugreiserfs(8)

Reiserfsprogs-3.6.27             January 2009               RESIZE_REISERFS(8)