Linux Certif

Toute la documentation sur la certification Linux LPI

archfs

NAME

archfs - filesystem for rdiff-backup repositories

SYNOPSIS

archfs mountpoint repository..

archfs -r repository.. -m mountpoint

DESCRIPTION

archfs

is a filesystem that allows to browse through the rdiff-backup repositories. It is created in user space and besides the requirement of FUSE kernel module it can be set without the need of root privileges. It may present data in different layouts - as a default it simply presents all revisions with contents at the time when certain backup had been made.

LAYOUTS

Files stored in the rdiff-backup archive can be presented in one of two layouts. As a default filesystem displays all increments with precise image of a stored directory. If -l option is used, however, then files from the last increment will be displayed as directories, each holding all versions of this file.

OPTIONS

This programs follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below.

-m --mount path

Specify path mount point.

-r --repositories repository..

Specify paths to repositories. If you use this option you have to specify mount point by option.

-s --simple

This option forces filesystem to use simple list as a data structure and as a result program require a little less memory.

-t --tree

This option explicitly forces filesystem to use directory tree as a data structure. This makes all operations faster, but requires a bit more memory. This data structure is chosen as a default.

-c --caching limit

Through this option user can use file caching, which increases efficiency on multiple accesses to one file. Without this function limit is set to 0 and there is no caching (this uses in fact simpler, better tested code). Limit does not define how many cached files can be stored on disk; instead it defines how many files can be cached if there are no open files. If there are open files, then the limit is decreased by their number. In certain cases, when multiple files are open at the same time, no caching will be done, so the disk usage can stay as low, as user wants.

-d --directory path

As a default archfs creates temporary directory to store cache and other files in /tmp. Using this option, we can define some other directory, where temporary files directory is created.

-l --last

This option changes way of presenting files in the filesystem. When invoked files from the most recent increment will be presented as directories, each holding every version certain file.

-v --version

Displays version of archfs.

SEE ALSO

rdiff-backup(1), fusermount(1).

AUTHOR

This manual page is maintained by Jon Dowland jmtd@debian.org. It was originally adapted for Debian by Adam Sloboda ja@disorder.sk from the m[blue]online manual pagem[][1] by Filip Gruszczyński. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.

On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

AUTHORS

Adam Sloboda, Jon Dowland.

COPYRIGHT

Copyright © 2008 Filip Gruszczyński, Adam Sloboda
Copyright © 2009 Jon Dowland

NOTES

1.

online manual page

http://code.google.com/p/archfs/wiki/Manual