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resize_lfs(8) [netbsd man page]

RESIZE_LFS(8)						    BSD System Manager's Manual 					     RESIZE_LFS(8)

resize_lfs -- resize a mounted log-structured filesystem SYNOPSIS
resize_lfs [-v] [-s new-size] mounted-file-system DESCRIPTION
resize_lfs grows or shrinks a mounted log-structured filesystem to the specified size. mounted-file-system is the name of the filesystem to be resized, and new-size is the desired new filesystem size, in sectors. If new-size is not specified, resize_lfs will default to the cur- rent size of the partition containing the filesystem in question. When growing, the partition must be large enough to contain a filesystem of the specified size; when shrinking, resize_lfs must first ``clean'' the segments that will be invalid when the filesystem is shrunk. If this cleaning process results in these segments becoming redirtied, this indicates that the given new size is not large enough to contain the existing filesystem data, and resize_lfs will return an error. EXAMPLES
To resize the file system mounted at /home to 32576 sectors: resize_lfs -s 32576 /home SEE ALSO
fsck_lfs(8), lfs_cleanerd(8), newfs_lfs(8) HISTORY
The resize_lfs command first appeared in NetBSD 3.0. AUTHORS
Konrad Schroder <> BUGS
resize_lfs should be able to resize an unmounted filesystem as well. BSD
September 4, 2006 BSD

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

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 <>. 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)
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