Man page for resize_reiserfs
June 3, 2007 – 7:44 amRESIZE_REISERFS
Section: Maintenance Commands (8)
Updated: January 2004
Index
Return to Main Contents
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 partitions, 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 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 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–dev@namesys.com>, 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),