--- name: "resize_reiserfs" section: "8" platform: "linux" package: "reiserfsprogs" version: "1:3.6.27-9" release: "Debian 13 (Trixie)" platforms: ["linux"] url: "https://new.carta.tech/resize_reiserfs" --- # resize\_reiserfs(8) resizer tool for the ReiserFS filesystem ## 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)](/cfdisk/8.md) 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)](/cfdisk/8.md) 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 \. ## BUGS Please report bugs to the ReiserFS developers \, 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)](/cfdisk/8.md), [**reiserfsck**(8)](/reiserfsck/8.md), [**debugreiserfs**(8)](/debugreiserfs/8.md)