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VFS_PREALLOC(8)                                                                              VFS_PREALLOC(8)



NAME
       vfs_prealloc - preallocate matching files to a predetermined size

SYNOPSIS
       vfs objects = prealloc

DESCRIPTION
       This VFS module is part of the samba(7) suite.

       The  vfs_prealloc  VFS module preallocates files to a specified size each time a new file is created.
       This is useful in environments where files are of a predetermined size will be written to a disk sub-system subsystem
       system where extending file allocations is expensive.

       This module is stackable.

OPTIONS
       prealloc:EXT = BYTES
          Preallocate all files with the extension EXT to the size specified by BYTES.

          The following suffixes may be applied to BYTES:

               K - BYTES is a number of kilobytes

               M - BYTES is a number of megabytes

               G - BYTES is a number of gigabytes

EXAMPLES
       A  process  writes  TIFF  files  to a Samba share, and the is known these files will almost always be
       around 4 megabytes (4194304 bytes):


               [frames]
            path = /data/frames
            vfs objects = prealloc
            prealloc:tiff = 4M


CAVEATS
       vfs_prealloc is not supported on all platforms and filesystems. Currently  only  XFS  filesystems  on
       Linux and IRIX are supported.

VERSION
       This man page is correct for version 3.0.25 of the Samba suite.

AUTHOR
       The  original  Samba  software  and  related  utilities were created by Andrew Tridgell. Samba is now
       developed by the Samba Team as an Open Source project similar to the way the Linux kernel  is  devel-oped. developed.
       oped.




                                                                                             VFS_PREALLOC(8)