resize_reiserfs

RESIZE_REISERFS(8)                                          RESIZE_REISERFS(8)



NAME
       resize_reiserfs - Reiserfs filesystem resizer

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 an reiserfs partition, first use resize_reiserfs
       to shrink the file system. You may then use  cfdisk(8)  to  shrink  the
       device.  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   In another case.


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


WARNING
       Note that this is a BETA program and may corrupt filesystems.

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

BUGS
       Please,   report   about   the   bugs   to    Alexander    Zarochentcev
       <zam@namesys.com> or to Hans Reiser <reiser@namesys.com>.

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



Reiserfsprogs-3.6.4              January 2002               RESIZE_REISERFS(8)