BackupPC-users

[BackupPC-users] Another BackupPC Fuse filesystem

2009-06-02 12:00:39
Subject: [BackupPC-users] Another BackupPC Fuse filesystem
From: Pieter Wuille <sipa AT users.sourceforge DOT net>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Tue, 2 Jun 2009 17:57:06 +0200
Hello,

because of a need to restore files from backuppc in a more flexible way than
through the web-interface (a particular directory in a whole bunch of hosts
at the same time) and some googling, i stumbled upon Stephen Day's fuse system
for backuppc.

It had a few shortcomings, such as not supporting share-names with "/"
characters, and being very slow, so i started rewriting parts and adding
some features. 

If anyone's interested at trying/looking at it:
https://svn.ulyssis.org/repos/sipa/backuppc-fuse/backuppcfs.pl

Some features:
- caches the directory structure to improve efficiency
- supports chardevs and blockdevs (and files/dirs/symlinks)
- correct linkcounts for directories
- merges all shares of a host into one directory tree structure,
  supporting '/' and '\' as separators in sharenames
- open()ed filehandles are kept and reused to prevent seeking for each and
  every read operation - even supports efficient (sequential) reading when
  files are opened more than once at the same time.
- incremental backups are shown correctly
- some command-line options

It is only tested on one 3.1 backuppc pool on a Ubuntu 8.04 system, and not
very extensively. It only opens files/directories in read-only mode, thus
shouldn't be able to damage a working backuppc pool if something goes wrong.

I'd like to get some feedback; ideas, bugreports, ... are very welcome.

-- 
Pieter

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