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Il est possible de diminuer la taille d'un système de fichiers LInux en utilisant la commande 'resize2fs'  et dans la mesure où l'unité concernée est démontée.



La syntaxe de cette commande est donnée avec la documentation du MAN ci-dessous :


       resize2fs - ext2/ext3/ext4 file system resizer


       resize2fs  [  -fFpPM  ]  [ -d debug-flags ] [ -S RAID-stride ] device [

       size ]


       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 and ext4.).

       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 giga-

       bytes, 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 oper-

       ation 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!


       -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


                   2    - Debug block relocations

                   4    - Debug inode relocations

                   8    - Debug moving the inode table

       -f     Forces  resize2fs  to  proceed with the filesystem resize opera-

              tion, overriding some safety  checks  which  resize2fs  normally


       -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 oper-

              ation,  so  that  the user can keep track of what the program is


       -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  set-

              ting to be used by resize2fs instead.


       The  minimum  size  of  the filesystem as estimated by resize2fs may be

       incorrect, especially for filesystems with 1k and 2k blocksizes.


       resize2fs was written by Theodore Ts’o <Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.;.


       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.


       fdisk(8), e2fsck(8), mke2fs(8), lvm(8), lvextend(8)